Title of Invention	A PROCESS FOR PREPARTION OF A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION
Abstract	The present invention is mainly relates to a single component liquid epoxy polyester paint composition containing epoxy. polyester reins, benzoin. and caster oil, polyacrylate polymer with silica, PTFE modified polyethylene wax and base pigment like barium sulphate, with the other paint carriers such as setting agents, thickening agents, wetting and stabilizing agent, adhesion promoters, corrosion inhibitors pigments organic solvents like polar and non polar solvents. The present invention also describes the process for the preparation of the thin film coating composition for the protection of substrates like wood/metals/concrete etc.

Title of Invention

A PROCESS FOR PREPARTION OF A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION

Abstract

The present invention is mainly relates to a single component liquid epoxy polyester paint composition containing epoxy. polyester reins, benzoin. and caster oil, polyacrylate polymer with silica, PTFE modified polyethylene wax and base pigment like barium sulphate, with the other paint carriers such as setting agents, thickening agents, wetting and stabilizing agent, adhesion promoters, corrosion inhibitors pigments organic solvents like polar and non polar solvents. The present invention also describes the process for the preparation of the thin film coating composition for the protection of substrates like wood/metals/concrete etc.

Full Text	E O R M 2 THE PATENTS ACT. 1970 (39of1970) COMPLETE SPECIFICATION (See section 10 and rule 13) 1. TITLE OF THE INVENTION A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION 2. APPLICANT(S) 1. NAME Natwarlal .1. Mehta 2 NATIONALITY Indian 1 ADDRESS A -7 . Giriraj Industrial Estate. Mahakali Caves Rd. Andheri Estate Mumbai 400 003 Preamble of the invention; The following specification particulariv describes the invention and the manner in which it is to be performed A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION FIELD OF INVENTION; The present invention relates to novel a single component liquid epoxy polyester paint composition excelling in coating 01m performance such as curability and storage stability, and electrostatic coal ability, and also to coating film-forming methods using the compositions. More particularly, present invention relates to novel coating liquid epoxy polyester paint composition for the substrates like metals, wood, bare concrete that leads to form protective film on the surface of substrate upon which it is applied. Most particularly, the preseni invention relates to the epoxy resin, polyester resin based film forming novel liquid epoxy polyester paint composition. Yet, most particularly invention relates to single component liquid epoxy based paint resin liquid epoxy polyester paint composition. BACKGROUND OF THE INVENTION; Corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen. Weakening of metals is due to oxidation of the iron atoms is a well-known example of electrochemical corrosion. This is commonly known as rust. This type of damage usually affects metallic materials, and typically produces oxide and/or salt of the original metal. Corrosion also includes the dissolution of ceramic materials and can refer to discoloration and weakening of polymers by the sun's ultraviolet light. Sun's ukraviolte light, heat air, moitsure, acidic climetic condtions can also affects of the state of the organic and inroganic building materials such as wood materials, metals, cement concretes etc. In order to protect building materils form the deteroiration/corrosion it is rccommanded that these are coated with the suitable coating materials in order to protect it form the slow oxidation. Among the coating techniques physical and chemical/electro depostion methods known in the state of the art the most papular is thin film forming. In the thin film forming method the thin film is created on the surface of the substrate. Vareily of the chemicals are used for the said purpose. Litreture survey discloses some of the state of art as discussed below, United States Patent. 3,989,676 discloses compositions useful for the formation of high performance coatings. The compositions of the invention are reaction products of a caprolactone polyol having an average hydroxyl functionality of at least three and a polyepoxide. These compositions are polyepoxide-caprolactone polyol adducts and having desirable characteristics of exterior durability and chemical resistance. U.S. Pat No. 4,217,426 describes melt blends of semi-crystalline polyesters with certain polyethylene to provide material that is readily grindable by cryogenic grinding techniques for use in powder coating compositions. The semi-crystalline polyesters have an inherent viscosity ranging from about 0.4 to 1.2, a melting point of about 80 to 155.degree. C. and an apparent heat of fusion of no more than 10 calories/gram and contain from 100 to 60 mole % terephthalic acid, 0 to 40 mole % isophthalic acid, 100 to 35 mole % 1,6-hexanediol and 0 to 65 mole % 1,4-butanediol. EP-A-322807 describes a thermosetting powder coating composition comprising a co-reactable particulate mixture of: (a) a carboxyl group-containing acrylic or polyester polymer having a Tg in the range 35.degree C to 100.degree. C; (b) a polyepoxide and (c) a beta-hydroxyalkylarhide. The composition can also contain a carboxyl group-containing crystalline polyester with a number average molecular weight of from 300 to 1500 and an acid equivalent weight of from 150 to 750 (acid value 375 to 75}. The crystalline polyester if used is present at 0 to 25 per cent by weight. It is asserted that amounts greater than i j 25 per cent by weight based on total resin solids are undesirable because of powder stability problems United States Patent 6,184,31 I teaches about a thermosetting powder coating composition. This invention further provides a process for the preparation of a semi-crystalline polyester for use in thermosetting powder coatings, by polycondensation between one or more suitable polyols and one or more suitable polycar boxy lic acid components selected from acids, anhydrides, esters and acid halides, United States Patent 5,728,779 teaches The present binder composition for thermosetting powder paints comprises (i) a polymer which has functional groups capable of reacting with epoxy groups, and (ii) a crosslinker which comprises at least one C5 to C 26 branched or linear aliphatic chain carrying epoxy groups. United States Patent 6,479,585 teaches a powder coating composition in particulate form consisting essentially of a mixture of: a), about 10% to 90% by - weight, relative to (a) plus (b), of carboxylic acid functional acrylic resin(s); b). about 10% to 90% by weight, relative to (a) plus (b), of polyepoxy resin(s); c). a catalyst in an amount sufficient to cure the composition at a temperature about 300 " F. or below for about 30 minutes or less; and d) optionally, a fiexibilizing agent. United States Patent Application 20080206471 discloses coating compositions excelling in storage stability and curability, which comprise carboxyl group -and/or cyclic acid anhydride group-containing compound; polyepoxide; and latent curing catalyst composed of tertiary amine and acidic phosphoric acid ester. OBJECTS OF THE INVENTION; An object of the invention is to provide a thin film forming A single component liquid epoxy polyester paint composition for the protection of ihe substrates like wood/m eta Is/con crete etc. 4 Another object of the invention is to formulate thin film coating composition for the protection of substrates like wood/metals/concrete, etc. Yet another object of the invention is to formulate non-aqueous base formulate thin film coating composition for the protection of substrates like wood/metals/concrete etc. Yet another object of the invention is to formulate liquid coating composition containing epoxy, polyester reins, benzoin, caster oil, non-polar solvents. Yet another object of the invention is to develop process for the preparation of the coating composition for the protection of substrates like wood/metals/concrete etc. SUMMARY OF THE INVENTION; The present invention is mainly relates to a single component liquid epoxy polyester paint composition containing epoxy. polyester reins, benzoin. and caster oil, polyacrylatc polymer with silica, PTFE modified polyethylene wax and base pigment like barium sulphate, with the other paint carriers such as setting agents, thickening agents, wetting and stabilizing agent, adhesion promoters, corrosion inhibitors pigments organic solvents like polar and non polar solvents. The present invention also describes the process for the preparation of the thin film coating composition for the protection of substrates like wood/metals/concrete etc DETAILED DESCRIPATION OF THE INVENTION; In preferred embodiment substrate is a term used as in materials science to describe the base material on which processing is conducted to produce new film or layers of material such as deposited coatings. These substrates are of the any materials based on the organic or inroganic in nature. The most common materials of the oraganic in nature are need to be protected form the deteoritation due to oxygen/ moisture is wood and the artcile made thereof; similarly, inorganic materials such as metals like ferrous or non ferrous which are easily corroded due the the conditions in mid around. Aonther group of the inorganic materials that are subject to the protection form the humidity, "salty climatic conditions is concret materials whicn is the medium of the construction;]. In brief the detoriation of the organic and inorganic substances casued due to non protection are summarized below, In preferred embodiment corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen. Weakening of metals is due to oxidation of the metal atoms is a well-known example of electrochemical corrosion. This is commonly known as rust. This type of damage usually affects metallic materials, and typically produces oxide and/or salt of the original metal. Corrosion also includes the dissolution of ceramic materials and can refer to discoloration and weakening of polymersby the sun's ultraviolet light. Most structural alloys corrode merely from exposure to moisture in the air, but the process can be strongly affected by exposure to certain substances. Corrosion can be concentrated locally to form a pit or crack, or it can extend across a wide area to produce general deterioration. While some efforts to reduce corrosion merely redirect the damage into less visible, less predictable forms, controlled corrosion treatments such as passivation and chromate-conversion will increase a material's corrosion resistance. In preferred embodiment concrete is a construction material composed of . cement (commonly Portland cement as well as other cementitious materials such as fly ash and slag cement aggregate (generally a coarse aggregate such as gravel limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures. The word concrete comes from the Latin word "concretus", which means "hardened" or "hard". Fire 6 Due to its low thermal conductivity, a layer of concrete is frequently used for fireproofing of steel structures. Concrete exposed to up to 100 "C is normally considered as healthy. The parts of a concrete structure that is exposed to temperatures above approximately 300 °C (dependent of water/cement ratio) will most likely get a pink color. Over approximately 600 °C the concrete will turn light grey, and over approximately 1000 °C it turns yellow-brown. One rale of thumb is to consider all pink colored concrete as damaged, and to be removed. Fire will expose the concrete to gases and liquids that can be harmful to the concrete, among other salts and acids that occur when gasses produced by fire come into contact with water. Aggregate expansion Various types of aggregate undergo chemical reactions in concrete, leading to damaging expansive phenomena. The most common are those containing reactive silica, that can react (in the presence of water} with the alkalis in concrete (K2O and Na2O, coming principally from cement). Among the more reactive mineral components of some aggregates are Opal, chalcedony, flint and strained quartz. Following the reaction (Alkali Silica Reactionor ASR), an expansive gel forms, that creates extensive cracks and damage on structural members. On the surface of concrete pavements the ASR can cause pop-outs, i.e. the expulsion of small cones (up-to 3 cm about in diameter) in correspondence of aggregate particles. When some aggregates containing dolomite are used, a dedolomitization reaction occurs where the magnesium carbonate compound reacts with hydroxyl ions and yields magnesium hydroxide and a carbonate ion. The resulting expansion.may cause destruction of the material. Far less common are pop-outs caused by the presence of pyrite, an iron sulfide that generates expansion by forming iron oxide and ettringite. Other reactions and recrysiallizations, e.g. hydration of clayminerals in some aggregates, may lead to destructive expansion as well. Sea water effects 7 Concrete exposed to sea water is susceptible to its corrosive effects. The effects are more pronounced above the tidal zone than where the concrete is permanently submerged. In the submerged zone, magnesium and hydrogen carbonate ions precipitate a layer of brucite, about 30 micrometers thick, on which a slower deposition of calcium carbonate as aragonite occurs. These layers somewhat protect the concrete from other processes, which include attack by magnesium, chloride and sulfate ions and carbonation. Above the water surface, mechanical damage may occur by erosion by waves themselves or sand.and gravel they carry, and by crystallization of salts from water soaking into the concrete pores and then drying up. Pozzolanic cements and cements using more than 60% of slag as aggregate are more resistant to sea water than pure Portland cement. Bacterial corrosion Bacteria themselves do not have noticeable effect on concrete. However, anaerobic bacteria Thiobacillus in untreated sewage tend to produce hydrogen sulfide, which is then oxidized by aerobic bacteria present in biofilm on the concrete surface above the water level to sulfuric acid which dissolves the carbonates in the cured cement and causes strength loss. Concrete floors lying on ground that contains pyrite are also at risk. Using limestone as the aggregate makes the concrete more resistant to acids, and the sewage may be pretreated by ways increasing pH or oxidizing or precipitating the sulfides in order to inhibit the activity of sulfide utilizing bacteria. Chemical damage Carbonation Carbonation-initiated deterioration of concrete Carbon dioxide from air can react with the calcium hydroxide in concrete to form calcium carbonate. This process is called carbonation, which is essentially the-reversal of-the chemical process of calcination of lime taking place in a cement kiln, Carbonation of concrete is a slow and continuous process progressing from the outer surface inward, but slows down with increasing diffusion depth. Carbonation has two 8 effects: it increases mechanical strength of concrete, hut it also decreases alkalinity, which is essential for corrosion prevention of the reinforcement steel. Below a pH of 10. the steel's thin layer of surface passivation dissolves and corrosion is promoted. For the latter reason, carbon;-lion is ;tn unwanted process in concrete chemistry. Carbonation can !>e tested by applying Phenolphthalein solution, a pH indicator, over a fresh fracture surface, which indicates non-carbonated and thus alkaline areas with a violet color. Chlorides Chlorides, particularly calcium chloride, have been used to shorten the setting time of concrete. However, calcium chloride and (to a lesser extent) sodium chloride have been shown to leach calcium hydroxide and cause chemical changes in Portland cement, leading to loss of strength, as well as attacking the steel reinforcement present in most concrete. Sulphates Sulphates in solution in contact with concrete can cause chemical changes to the cement, which can cause significant microstructural effects leading to the weakening of the cement binder. Leaching Leaching is a self healing of cracks with chemical process in concrete. Physical damage Damage can occur during the castinr and de-shuttcring processes. The corners of beams for instance, can be damaged during the removal of shuttering because they are less effectively compacted by means of vibration (improved by using form-vibrators). Other physical damage can be caused by the use of steel shuttering without "base plates. The steel shuttering pinches the top surface of a concrete slab due to the weight of the next slab being constructed. Decaying of woods 9 Damage to wood frame buildings by mildew, mold, staining, and decay is easily preventable. It is usually caused by design flaws, poor workmanship, and or neglected maintenance. Microorganisms cause mildew, mold, staining, and decay, they belong to a huge group of primitive plants called fungi. Fungi have four growth requirements similar to our basic human needs: food, water, air, and a satisfactory temperature. Decay will be prevented if any one of the four requirements is removed. The most effective way to prevent fungal deterioration is to keep the area drv. SYMPTOMS OF WATER INFILTRATION Mildew Exterior mildews often appear on unheated projecting parts of buildings such as eaves that cool quickly after sunset causing dew to form. North facing walls and walls shaded by trees and other obstructions that restrict sunlight and airflow are also candidates. While mildew won't grow where siding crosses stiids and other thermal bridges, mildew may thrive over the cooler, insulated bays between studs, where dew persists to provide the needed moisture. These mildews are easily removed with a chlorine and detergent, solution. Mold Molds need a surface moisture content of about 20% to get started. Molds tend to be a discoloration on the surface of wood. Discoloration aside, molds generally have little effect on wood's integrity. Prevention lies wholly in controlling air moisture levels and condensation through proper site drainage and ventilation. Staining Fungi Staining fungi is found almost exclusively in freshly sawn lumber. If not treated, or if the moisture content is not reduced to an intolerable level, this fungi can destroy certain wood cells leaving the wood susceptible to decay. Decay Fungi (Dry Rot) While discoloration by mildew, mold, and staining fungi is only an appearance problem, deear-fungus threatens the structural integrity of wood"."Suitably termed the "slow fire", these fungi eat the very cellulose of which wood cells are made. Decay fungi are what we commonly call dry rot, even though it is caused by water. Moisture content is the critical factor that makes wood susceptible to decay. It must exceed 28%, and liquid water must be present in cell cavities before decay fungi can gain a toehold. Once established, some fungi can carry on their destruction at a moisture content as low as 20%. When moisture content falls below this level, all fungal activity stops. Thai's one reason why framing lumber is dried to 19% moisture content or less. It doesn't take a trained eye to recognize decay in its advanced stages. Wood is visibly discolored, spongy, and musty. Surfaces may be stringy, shrunken, or split across the grain. Decay extends deep into the wood and strength loss is significant. Before repainting the exterior or interior of your house, look for evidence of mildew or mold on the wall surfaces. Remove mildew or mold with an application of a bleach and water mixture. When you purchase your house - paint, have a mildicide added to the the paint or purchase the mildicide at your local paint store and add it to the paint. Hence, in order to avoid the loss due the to the corrosion of the metals and detonation of the wood the coating composition of the present invention are designed. Epoxy resin based formulations are marked by the drawback of the powdery in nature which are at the time of application need to be dissolved in suitable ' vehicle. For the application of the epoxy resins are need to be mixed with the polyacrylate material, and the composition formed such is need to fully utilized - at the one stretch, which is not possible to store, it becomes it becomes hard after mixing, such property of the epoxy resins is limiting factor for. the preparation of the coating compositions or adhesion compositions. Due to its powdery in nature it make it very difficult to achieve results with the consistenc3', film formed due to such deposition also non continuous, due to such reasons epoxy resins arc less popular, The common ingredients of the present coating composition is as discussed below, 11 Epoxy or polyepoxide is a thermosetting epoxide polymer that cures (polymerizes and crosslinks) when mixed wiih a catalyzing agent or hardener. In Preferred embodiment epoxy resins are selected from between epichlorohydrin and bisphenol-A or other known epoxy resins either sysnethic or natural in origen. The coating dries quickly providing a tough, UV resistant, protective coating wiih excellent ultimate hardness, and good mar and abrasion resistance. They arc designed for rapid dry protective coating applications. Ambient cure epoxy coatings provide excellent physical properties in exterior applications. These products have excellent adhesion to various metal substrates. Their low VOC and water clean up makes them a natural choice for factory cast iron, cast steel, cast aluminum applications and reduces exposure and flammability issues associated with solventborne coatings. They are usually used for industrial and automotive uses as they are high heat resistant (as latex-based and alkyd-based paints usually burn, thus peel, with slight high heat temperatures). Polyester Epoxies are used as powder coatings for washers, driers and other "white goods". Fusion Bonded Epoxy Powder Coatings (FBE) are extensively used for corrosion protection of steel pipes and fittings used in the oil and gas industry, potable water transmission pipelines (steel), concrete reinforcing rebar et cetera. Epoxy coatings arc also widely used as primers to improve the adhesion of automotive and marine paints especially on metal surfaces where corrosion (rusting) resistance is important. Metal cans and containers are often coated with epoxy to prevent rusting, especially for foods like tomatoes that are acidic. Epoxy resins are also used for high performance and decorative flooring applications especially terrazzo flooring, chip flooring and colored aggregate flooring. In preferred embodiment-polyester Resin refers to unsaturated resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Among other uses, it is the basic component of SMC/BMC. Unsaturated polyesters are condensation polymers formed by the reaction of polyols (also known as polyhydric alcohols, organic compounds with multiple alcohol or hydroxy functional groups) and polycarboxylic that contain double bonds. Typical polyols used are glycols such as ethylene glycol. The usual polycarboxylic acids used are phthalic acid and malcie acid. Unsaturated polyesters differ from saturated polyesters such as polyethylene lerephthalate which constitutes the polyester films and fibers of commerce in that acids or glycols having double bond unsaturation are included in the formula to provide reactive olefinic unsaturation in the unsaturated polyester alkyd. Polyester resins are thermosetting; "thermosetting" means the plastic softens when initially heated, but sets permanently rigid once it has cooled (as opposed to "thermoplastics", which re-soften with heat). Polyester resin is often purchased in liquid form for the production of glass-reinforced plastic. In this case, a catalyst (typically methyl ethyl ketone peroxide (MEKP) (also known as butanone peroxide) is used to initiate the polymerization reaction; benzoyl peroxide is a somewhat less hazardous alternative suitable for some purposes. Epoxy matting Hardener D68 is the salts of polycarboxylic acid with cyclic amidine. The hardener, applied in suitable formulations can produce epoxy or Hybrid coatings for matt or semi-matt gloss with very good flowing and properties. Variation between matt and semi-matt surface can be obtained by-means of suitable adjustment of formulation. Hybrid coating with matt or semi-matt gloss may be achieved by replacing some of the polyester in the formulation with an equivalent quantity of D68.The following gives the formulations of hardeners for matt epoxy coatings Hybrid coating with matt or semi-matt gloss may be achieved by replacing some of the polyester in the formulation with an equivalent quantity of D68.The following gives the formulations of hardeners for matt epoxy coatings. Item 604(epoxy,0.12-0.13) ■ PE (AV.20-35 D68hardener,Dongyuan MA-100(Carbon Black,Misushi) DY-88Leveling agent,Dongyuan Carb-1 (filler, Omiya) Gloss60 D68 is a leveling agent with silica carrier available from. It's noted that the achievement of matt effect and relevant puppetries of .the film is connected with full cured of coatings. Benzoin or 2-Hydroxy-2-phenylacetophenone or 2-Hydroxy-l ,2-Diphenyle than one or desyl alcohol or bitter almond oil camphor is an organic compound consisting of an ethylene bridge flanked by phenyl groups and with a hydroxyl and a ketone functional group. It comes as off-white crystals, with a light camphor odor. Benzoin is used as photoinitiotor in the paint compositions. Hydrogenated Castor Oil Based Rheology Modifiers it is used in the paint composition mainly for the purpose, • Sedimentation: During storage, the coating must develop a very high viscosity in order to effectively suppress settling of pigments and extenders. • Coating Application: The coating viscosity must be sufficiently low for ease of application by conventional methods e.g. brushes, roller and spray. • Levelling: Once applied, the coating must exhibit the correct rheological characteristic so that sag resistance is maximised without detriment to the surface levelling process. The coating film is now subjected to the low shear conditions of gravity. Here it is desirable that the film remains in place during the drying process and also that a high degree of surface levelling be obtained. In order to effectively address sag resistance and surface levelling at the same time, the coating system must exhibit a time dependent viscosity recovery, a process known as thixotropic recovery. This is where the viscosity of the coating film increases in a time dependent manner back towards its low shear value. The increase in viscosity suppresses sagging while the time dependent aspect allows sufficient time for effective levelling. If this time dependent viscosity recovery is too rapid, the coating will essentially behave in a pseudoplastic manner. While this will result in excellent sag resistance, the result will be poor surface levelling with any application textures such as brush marks permanently frozen in as a feature of the dried film. Consequently, shear thinning rheology combined with time dependent thixotropic viscosity recovery is a feature highly sought after for most coatings. There is a wide range of rheology modifiers available to the formulator e.g. silicas, organo-clays, organo-waxes, polyethylene waxes and various surfactants. Unfortunately, most of these exhibit very little time dependence following application i.e. they tend more towards a pseudoplastic rather than the well balanced thixotropic rheology. Hydrogenated castor oil based rheology modifiers are one particular group of rheology. in pi cferred embodiment polyacrylate polymer with silica is used to improve the UV-shielding and water-resistance properties of many emulsion-type latexes, poly (styrene-butylacrylate-acrylic acid) (PSBA)-grafted-silica (PSBA-g-silica) hybrid nanoparticles.The influence of PSBA-g-silica hybrid nanoparticles on the interfacial adhesion.-film morphology,-thermodynamics properties, UV-shielding, water-re si stance and mechanical performance of PSBA films were investigated systematically. Ployqacrylate polymer with silica is significant improvement in interfacial adhesion properties, UV-shieldirig, water-resistance and mechanical properties. Fabricating the silica-based latex nanocomposite is an effective approach to develop the new emulsion-type paints and adhesives. PTFE Powder Polyethylene Wax PTFE Powder Polyethylene Wax Coil Coatings, Powder Coatings, Industrial Paints, Overprinting Coatings and Printing Inks Smooth PTFE and solid polyethylene have excellent characteristics: it can help to scatter, prevent cohesiveness, promote flowability, enhance anti-abrasion and smoothness, resist to stain in powder coatings. And adding 0.8%~2% into paint and inks will have excellent anti-friction and smoothness grip. Barium sulfate is a white.crystalline solid with the chemical formula BaSO4 Barium sulfate mixtures are used as white pigment for paints. The combination of barium sulfate and zinc sulfide (ZnS) is called lithopone. Barium sulfate itself is called blancfixe. It replaced white lead due to the latter's toxicity. This is used as a base pigments . ■ In preferred embodiment in addition to active paint ingredients other paint additives like dispersing agents, wetting agents, coating additives, paint chemicals, coating chemicals, oil based additives, water based additives, solvent based additives, silicone defoamer, silicone emulsion defoamer, powder derfoamer, specialty chemicals, emulsifier free additive, Antisetting agents, thickening agents, adhesion promoters, corrosion inhibitors, epoxy resin, pigments etc In preferred embodiment antisetting agnets such as Antil - 310, an til 312 ™ NILSET - 117 or soya lecithin, thickining agnets like antil 312 ™ , polyurea resin, N-methyl pyrrolidone, these are used thickining agnets, antisetting agents, anti-sagging agnets for solvent based paints, inks, coatings. - In preferred embodiment wetting agents and stabilizing agents like these are polyuretnane modified high mol wt polymeric hyper dispersants. These are used mainly for setting and wetting of pigments. These agents used to improve gloss levels, stability, anti-setting, anti-floating properties. W &D 1070 is the common. trade name of are polyurethane modified high mol wt polymeric hyper dispersants. In preferred embodiment stabilizer is a chemical which tends to inhibit the reaction between two or more other chemicals. It can be thought of as the antonym to a catalyst. It can be also a chemical that inhibits separation of suspensions, emulsions, and foams, paints etc. The paint stabilizing agnets arc stabilizing agent is Zn salt of hydroxypyridine, zinc benzoate. 2-hydroxypyridine, or a mixture thereof. Adhesion promoter such as ANCHOR lM 250 Spl, these are titanate modified prepration in isopropanol. In preferred embodiment corrosion inhibitor is a chemical compound that, when added to a fluid or gas, decreases the corrosion rate of a metal or an alloy. The effectiveness, or corrosion inhibition efficiency, of a corrosion inhibitor is a function of many factors like: fluid composition, quantity of water, flow regime.... If the correct inhibitor and quantity is selected then is possible to achieve high, 90-99%, efficiency. Some of the mechanisms of its effect are formation of a passivation layer (a thin film on the surface of the material that stops access of the corrosive substance to the metal), inhibiting either the oxidation or reduction part of the redox corrosion system" (anodic and cathodic inhibitors}, or scavenging the dissolved oxygen. Some corrosion inhibitors are hexamine, phenylenediamine, dimethyiethanolamine, sodium nitrite, cinnamaidehyde, condensation products of aldehydes and amines (imines), chromates, nitrites, phosphates, hydrazine, ascorbic acid, and others. The suitability of any given chemical for a task in hand depends on many factors, from the material of the system they have to act in, to the nature of the substances they are added into and their operating temperature. Nitrite is another anodic inhibitor. If anodic inhibitors are used at too low concentration, they can actually aggravate pitting corrosion, as they form a nonuniform layer with local anodes, corrosion inhibitor agent is K-C or 463 In preferred embodiment pigment is selected from the group consisting of china clay, barite, calcite. zinc oxide, zinc chromate. talc silicon powder, titanium dioxide, carbon block or any other conventional pigments of the desired color from the colouerd complexes of the transition metis or natural colors. In preferred embodimenl of the invention, the resin is selected from the group consisting of amino aJkyd, aminopolyesters or amino fatty acid akyds, thcrcmosetting acrylic, acrylic and melamine (amino acrylics), modified cpoxys. cpoxyesters, acrylated alkyd, thermoplastic acrylic, silicone or modified silicone, urea formaldehyde, petrasc resin, nitrocelluose, melamine formaldehyde, In preffered embodiment of the invention, the solvent is selected from the group consisting of toluene, orthoxylene, renine. C-9/GR-150 solvents, paraxylene. n-butanol, methanol, isopropyl alcohol, diaccrone alcohol, isobutyl alcohol, mosstanol, butyl acetate, ethyl acetate, cellosolve acetate, butyl cellosolve, ethyl cellosolve. methyl isobutyl ketone, cyclohexanol, methyl ethyl ketone, dipentcne, xylene mixture, butyi carbitol, or 1 -4 dioxane any mixture thereof. In preffered embodimenl of the present invention raw matenals are mixed at the definatc ratio to obtain the mixture desiganted as group 'A additives are in group 'B' and polar and nonpolar solvents in group 'CIn preffered embodiment group 'A' active paint ingridents are pre mixed in a particular ratio. The premixed formed group 'A' of raw matenals is passed through heated extrude at the 80-120 "C which results to semi polymerization of the active materials in the form of pellets. The pehets are pulvarised in to uniform powder form. The materials of the group 'A' arc epoxy resin 25-40"/) w/w, polyester resin 15-25%w/w matting agents 0.1-2.0% w/w, benzoin 0. ] -0'.5%w/ w t hydrogenated caster oil 0. 1-0,3%w/w, polycarbonate polymer with silica carrier 0.3-1.0% w/w, PTFE modified polyethylene wax 0.1 -0.5 % w/w basic pigment/s such as barium sulphate 35-50 % w/w. These materials in the preffered ratio are mixed 18 in the % w/w portion and extrude at 80-120 ° C to form the semi polymerised mass which upon pulverization results in to unform powder. In preffered embodiment group B' powder form of thre group 'A' as prepared in earlier step is mixed with the paint additives like antisetting agents, thickning agents, wetting and stabilizing agnets, adhesion promoters, corrosion inhibitors, epoxy resins, and desired pigments having preffered color , to form the materials of the group 'B'. In preffered embodiment group B' is prepared form the combination of the group 'A' 85-95% w/w. anti setting agnets .1-1.0 % w/w, thickining agent 0.1- 1.0 % w/w, wetting and stabilizing agents 0.2-1.2 % w/w, adhesion promoter O.l-l.o % w/w, corrosion inhibitor 0.1-0.5% w/w, epoxy resin 2.0-6.0% w/w and desired pigment 1.0-2.0% w/w. These materials are properly mixed to form group TB' In preffered embodiment group 'C non polar solvents like toluene, 1-4 dioxane and rnethyl ethyl ketone are mixed to form the solvents as the group 'C' In preffered embodiment group "C' are mixed toluene 70-90 % w/w, 1-4 dioxane 5.0-15.0 % w/w and methyl ethyl ketone 5.0-15.0 % w/w.are mixed to form the solvents of the group 'C In the most preffered embodiment tne materials formed as group US' and group 'C are mixed properly to form the desired paint composition. In the most preffered embodiment group 'B and group C' are mixed at the ratio of 45-55 % w/w and group 'C are mixed at the 45-55 % w/w to form the paint composition. Paint composition can be applied on the substarte of the by any conventional means such as by brush, spray, towel or any other method known in the art. The paint applied on the substrate is polymerized on drying leaving thin film on the substarte surface on which-it is applied. 19 The paint formed subjected for the following pre and post application tests Pre-application test Sr. No Name of the test Stantdard unit 1 Test results i 1 Density (wt per lit) 1.137 kg/lit 2 Mass solid 53.69% 3 Volume Solids 50.00% 4 Drying property at 30 °C (a)Surface dry-time (a) Hard dry 15-20 min 60 min 5 Apperence and application Smooth/homogeneous unsettled liquid and appliocable by brush and spray Post-application test Sr. No Name of the test Stantdard unit i Test results 1 . Gloss i 40-52 @ 60 'c' 2 Film thickness (DFT) j 40-60 microns 3 Flexibility ( bending 1 test) ! Bending at 180 C ] ASTM D 522 conicAL % elongnation Mandril test Passed till smallest dia passes 80-100% 4 Impact test , 30 joules passes direct and indirect. 5 Cross hatch section \| ■ i Passes 4 B 6 Holiday/pinhole test No any pin holes except edges 7 Shore hardness Shore D on metal sample j ! 88 Shore A on film i sample \| i 82 i 8 Scrach hardness j 2.2 kg Passes 9 % Elongation of film 80-100% 10 Water absorption 24 1.16/% Mrs 11 Taber Abrasion test (CS-17 10000 C/S) 178.3 mg wt loss 12 Pull off adhesion on 10.2 mg wt loss metal 13 Pull off adhesion on coneret 3.0 mpa 14 Bond strength.( pull on test) Against concret (a) Bond stress of uncoated rebar 4.28 Mpa (b) Bond stress of caoted rebar (c) % efficency 4.48 Mpa increse around 5 % more i than uncoated Long term Performance test Sr. No Name of the test Stantdard unit Test results 1 Salt spary test ASTM B 117 200 hrs passes 2 Condesnation test 500 Hrs passes 3 Weathering artifical test 100 hrs passes with brightness in color Immersion service test Sr. No Name of the test Stantdard unit Test results 1 10% HC1 i I i I — — . i No effect on surface 10% H2SO4 No effect on surface 10%HNO3 No effect on surface L 10 NaOH Drop test of MEK No effect on surface No effect on surface Example 1 Preparation of group A Epoxy resin prefreably epichlorhydrin bis-phenol A at 34 % w/w mixed with polyester resin 20 % w/w,.mating agent 1.0% w/w, benzoin 0.39 % w/w , hydrogenated caster oil 0.2% w/w, p.olyacrylate polymer with silica carrier 0.7 % w/w, PTFE modified polyethylene wax 0.2 % w/w, barium sulphate 43-51%. w/w are extrduded at the 100 °C. Prepration of group B 92.2 % w/w of group A mixed with paint additives viz 0.5 % w/w thickning agent, 0.5 % w/w wetting and stabilising agent, 0.7 % w/w adhesion promoter, 0.4% w/w corrosion inhibitor, 0.2 % w/w of epoxy resin 0.2 %w/w and pigment 1.5 %. Prepration of group C Non polar solvents like toluene 81 % w/w and 1-4 dioxane 9 % are mixed with MEK 10 % w/w to form solvent mixture. Prepartion oi paint Paint composition is formed by mixing 48 % w/w of the group B' and 52 % w/w group 'C'to form paint composition. Claims; 1. A single component liquid epoxy polyester paint composition consisting (a) group 'A' material components, (b) group 'B'material components, (c) group'C solvent mixture, 2. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' materia) components are about 25 to 40 parts by weight of a epoxy resin, about 15.0 to 25 parts by weight of a polyester resin, matting agents by weight 0.1 to 2.0 benzoin by weight 0.1 to 0.5 hydrogentaed caster oil by weight 0.1 to 0.3, polycarbonate with silica carrier by weight 0.3 to .1.0, polyetheylene wax by weight 0.1 to 0.5, base pigment by weight 35 to 50 3. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 13' material components are about about 85 to 95 parts by weight group 'A' and paint additives. 4. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'C solvent mixture compositon of polar and non polar solvents. 5. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' material component is about 45-55 parts by weight and group 'C solvent mixture is about parts by weight 45-55 are mixed to form liquid epoxy polyester paint composition. 6. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component epoxy resin is epichlorohydrin or bispbenol-A or mixture thereof, 7. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component polyester resin is unsaturated resins formed by basic dibasic organic acids and polyhydric alcohols preferably methyl ethyl ketone peroxide, benzoyl peroxide. 8. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component matting hardener is D68 which [s salt of polycarboxylic acid and amidine. 9. A single component liquid epoxy polyester paint composition according to claim 1 wherein group "A' material component base pigment is barium sulphate, zinc sulphide, lithophone. 10. A single component liquid epoxy polyester paint composition according to claim 1 wherein group (B' paint additives antiseUing agnets. wetting agents, stabilizing agents, corrosion inhibitors, resins, pigments. 11. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' antisettling agents are Antil -310, Antil 312, NILSET-117, soya lecithin, polyurea resin. N-methyl pyrrolidone. 12.A A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' stabilizing agnets are W&D 1070. ANCHOR 250, 13. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' corrosion inhibitors are hexamine, phenylenediamine, dimethylethanolamine, sodium nitrite, cinnamaldehyde, condensation products of aldehydes and amines (imines), chromates, nitrites, phosphates, hydrazine, ascorbic acid. 14. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' resins are amino alkyd, aminopolyesters or amino fatty acid akyds, theremosetting acrylic, acrylic and melamine (amino acrylics), modified epoxys, epoxyesters, acrylated alkyd, thermoplastic acrylic, silicone or modified silicone, urea formaldehyde, petrase resin, nitrocelluose, melamine formaldehyde 15. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'S'pigments are pigment is selected from the group consisting of china clay, barite, calcite, zinc oxide, zinc chromate, talc, silicon powder, titanium dioxide, carbon black, coloured transition metal complexes. 16. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'C solvents are of toluene, orthoxylene, renine, C-9/GR-150 solvents, paraxylene, n- butanol, methanol, isopropyl alcohol, diacetone alcohol, isobutyl alcohol, mosstanol, butyl acetate, ethyl acetate, cellosolve ■ acetate, butyl cellosolve, ethyl cellosolve, methyl-isobutyl ketone, cyclohexano!, methyl ethyl ketone, dipentene, xylene mixture, butyl carbitol, or 1-4 dioxane any mixture thereof. 24 18. A process for preparation of a single component liquid cpoxy polyester paint coin posit ion comprising: (a) exlrudtion of components which arc about 25 to 40 pans by weight of a cpoxy resm, about 1 5.0 to 25 parts by weight of a polyester resm, matting agents by weight. 0.1 to 2.0 benzoin by weight 0.1 to 0.5 hydrogeniacd caster oil by weight 0.1 to 0.3. polycarbonate with silica carrier by weight 0.3 to 1.0, polvelheylene wax by weight 0.1 to 0.5, base pigment by weight 35 to 50 at the 18-120 °C to form polymerised pcllates. (b) pulverization of the step (a) polymerised peliates in lo powder form. (c) mixing of 85-95 parts by weight of setp(b) powder with the painl additvives, (d) preparation of the solvent mixture of polar and non polar solvents. (e) mixing of step ( C) and step (c) solvents at 45-55 parts by weight to form liquid cpoxy polyester paint composition. 19. A single component liquid epoxy polyester paint composition as descibed herein with reference to example and description. Signature of applicant f

Full Text

E O R M 2
THE PATENTS ACT. 1970
(39of1970)
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION
A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION
2. APPLICANT(S)
1. NAME Natwarlal .1. Mehta
2 NATIONALITY Indian
1 ADDRESS A -7 . Giriraj Industrial Estate. Mahakali Caves Rd. Andheri Estate Mumbai 400 003

Preamble of the invention;
The following specification particulariv describes the invention and the manner in which it is to be performed

A SINGLE COMPONENT LIQUID EPOXY POLYESTER PAINT COMPOSITION FIELD OF INVENTION;
The present invention relates to novel a single component liquid epoxy polyester
paint composition excelling in coating 01m performance such as curability and
storage stability, and electrostatic coal ability, and also to coating film-forming
methods using the compositions.
More particularly, present invention relates to novel coating liquid epoxy
polyester paint composition for the substrates like metals, wood, bare concrete
that leads to form protective film on the surface of substrate upon which it is
applied.
Most particularly, the preseni invention relates to the epoxy resin, polyester
resin based film forming novel liquid epoxy polyester paint composition.
Yet, most particularly invention relates to single component liquid epoxy based
paint resin liquid epoxy polyester paint composition.
BACKGROUND OF THE INVENTION;
Corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen.
Weakening of metals is due to oxidation of the iron atoms is a well-known example of electrochemical corrosion. This is commonly known as rust. This type of damage usually affects metallic materials, and typically produces oxide and/or salt of the original metal.
Corrosion also includes the dissolution of ceramic materials and can refer to discoloration and weakening of polymers by the sun's ultraviolet light.
Sun's ukraviolte light, heat air, moitsure, acidic climetic condtions can also affects of the state of the organic and inroganic building materials such as
wood materials, metals, cement concretes etc.

In order to protect building materils form the deteroiration/corrosion it is rccommanded that these are coated with the suitable coating materials in order to protect it form the slow oxidation.
Among the coating techniques physical and chemical/electro depostion methods known in the state of the art the most papular is thin film forming.
In the thin film forming method the thin film is created on the surface of the substrate. Vareily of the chemicals are used for the said purpose. Litreture survey discloses some of the state of art as discussed below,
United States Patent. 3,989,676 discloses compositions useful for the formation of high performance coatings. The compositions of the invention are reaction products of a caprolactone polyol having an average hydroxyl functionality of at least three and a polyepoxide. These compositions are polyepoxide-caprolactone polyol adducts and having desirable characteristics of exterior durability and chemical resistance.
U.S. Pat No. 4,217,426 describes melt blends of semi-crystalline polyesters with certain polyethylene to provide material that is readily grindable by cryogenic grinding techniques for use in powder coating compositions. The semi-crystalline polyesters have an inherent viscosity ranging from about 0.4 to 1.2, a melting point of about 80 to 155.degree. C. and an apparent heat of fusion of no more than 10 calories/gram and contain from 100 to 60 mole % terephthalic acid, 0 to 40 mole % isophthalic acid, 100 to 35 mole % 1,6-hexanediol and 0 to 65 mole % 1,4-butanediol.
EP-A-322807 describes a thermosetting powder coating composition comprising a co-reactable particulate mixture of: (a) a carboxyl group-containing acrylic or polyester polymer having a Tg in the range 35.degree C to 100.degree. C; (b) a polyepoxide and (c) a beta-hydroxyalkylarhide. The composition can also contain a carboxyl group-containing crystalline polyester with a number average molecular weight of from 300 to 1500 and an acid equivalent weight of from 150 to 750 (acid value 375 to 75}. The crystalline polyester if used is present at 0 to 25 per cent by weight. It is asserted that amounts greater than
i j

25 per cent by weight based on total resin solids are undesirable because of powder stability problems
United States Patent 6,184,31 I teaches about a thermosetting powder coating composition. This invention further provides a process for the preparation of a semi-crystalline polyester for use in thermosetting powder coatings, by polycondensation between one or more suitable polyols and one or more suitable polycar boxy lic acid components selected from acids, anhydrides, esters and acid halides,
United States Patent 5,728,779 teaches The present binder composition for thermosetting powder paints comprises (i) a polymer which has functional groups capable of reacting with epoxy groups, and (ii) a crosslinker which comprises at least one C5 to C 26 branched or linear aliphatic chain carrying epoxy groups.
United States Patent 6,479,585 teaches a powder coating composition in particulate form consisting essentially of a mixture of: a), about 10% to 90% by - weight, relative to (a) plus (b), of carboxylic acid functional acrylic resin(s); b). about 10% to 90% by weight, relative to (a) plus (b), of polyepoxy resin(s); c). a catalyst in an amount sufficient to cure the composition at a temperature about 300 " F. or below for about 30 minutes or less; and d) optionally, a fiexibilizing agent.
United States Patent Application 20080206471 discloses coating compositions excelling in storage stability and curability, which comprise carboxyl group -and/or cyclic acid anhydride group-containing compound; polyepoxide; and latent curing catalyst composed of tertiary amine and acidic phosphoric acid ester.
OBJECTS OF THE INVENTION;
An object of the invention is to provide a thin film forming A single component liquid epoxy polyester paint composition for the protection of ihe substrates like wood/m eta Is/con crete etc.
4

Another object of the invention is to formulate thin film coating composition for the protection of substrates like wood/metals/concrete, etc.
Yet another object of the invention is to formulate non-aqueous base formulate thin film coating composition for the protection of substrates like wood/metals/concrete etc.
Yet another object of the invention is to formulate liquid coating composition containing epoxy, polyester reins, benzoin, caster oil, non-polar solvents.
Yet another object of the invention is to develop process for the preparation of the coating composition for the protection of substrates like wood/metals/concrete etc.
SUMMARY OF THE INVENTION;
The present invention is mainly relates to a single component liquid epoxy polyester paint composition containing epoxy. polyester reins, benzoin. and caster oil, polyacrylatc polymer with silica, PTFE modified polyethylene wax and base pigment like barium sulphate, with the other paint carriers such as setting agents, thickening agents, wetting and stabilizing agent, adhesion promoters, corrosion inhibitors pigments organic solvents like polar and non polar solvents.
The present invention also describes the process for the preparation of the thin film coating composition for the protection of substrates like wood/metals/concrete etc
DETAILED DESCRIPATION OF THE INVENTION;
In preferred embodiment substrate is a term used as in materials science to describe the base material on which processing is conducted to produce new film or layers of material such as deposited coatings. These substrates are of the any materials based on the organic or inroganic in nature. The most common materials of the oraganic in nature are need to be protected form the deteoritation due to oxygen/ moisture is wood and the artcile made thereof;

similarly, inorganic materials such as metals like ferrous or non ferrous which are easily corroded due the the conditions in mid around. Aonther group of the inorganic materials that are subject to the protection form the humidity, "salty climatic conditions is concret materials whicn is the medium of the construction;].
In brief the detoriation of the organic and inorganic substances casued due to non protection are summarized below,
In preferred embodiment corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen. Weakening of metals is due to oxidation of the metal atoms is a well-known example of electrochemical corrosion. This is commonly known as rust. This type of damage usually affects metallic materials, and typically produces oxide and/or salt of the original metal. Corrosion also includes the dissolution of ceramic materials and can refer to discoloration and weakening of polymersby the sun's ultraviolet light.
Most structural alloys corrode merely from exposure to moisture in the air, but the process can be strongly affected by exposure to certain substances. Corrosion can be concentrated locally to form a pit or crack, or it can extend across a wide area to produce general deterioration. While some efforts to reduce corrosion merely redirect the damage into less visible, less predictable forms, controlled corrosion treatments such as passivation and chromate-conversion will increase a material's corrosion resistance.
In preferred embodiment concrete is a construction material composed of . cement (commonly Portland cement as well as other cementitious materials such as fly ash and slag cement aggregate (generally a coarse aggregate such as gravel limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures. The word concrete comes from the Latin word "concretus", which means "hardened" or "hard". Fire
6

Due to its low thermal conductivity, a layer of concrete is frequently used for fireproofing of steel structures.
Concrete exposed to up to 100 "C is normally considered as healthy. The parts of a concrete structure that is exposed to temperatures above approximately 300 °C (dependent of water/cement ratio) will most likely get a pink color. Over approximately 600 °C the concrete will turn light grey, and over approximately 1000 °C it turns yellow-brown. One rale of thumb is to consider all pink colored concrete as damaged, and to be removed.
Fire will expose the concrete to gases and liquids that can be harmful to the concrete, among other salts and acids that occur when gasses produced by fire come into contact with water.
Aggregate expansion
Various types of aggregate undergo chemical reactions in concrete, leading to damaging expansive phenomena. The most common are those containing reactive silica, that can react (in the presence of water} with the alkalis in concrete (K2O and Na2O, coming principally from cement). Among the more reactive mineral components of some aggregates are Opal, chalcedony, flint and strained quartz. Following the reaction (Alkali Silica Reactionor ASR), an expansive gel forms, that creates extensive cracks and damage on structural members. On the surface of concrete pavements the ASR can cause pop-outs, i.e. the expulsion of small cones (up-to 3 cm about in diameter) in correspondence of aggregate particles. When some aggregates containing dolomite are used, a dedolomitization reaction occurs where the magnesium carbonate compound reacts with hydroxyl ions and yields magnesium hydroxide and a carbonate ion. The resulting expansion.may cause destruction of the material. Far less common are pop-outs caused by the presence of pyrite, an iron sulfide that generates expansion by forming iron oxide and ettringite. Other reactions and recrysiallizations, e.g. hydration of clayminerals in some aggregates, may lead to destructive expansion as well.
Sea water effects

7

Concrete exposed to sea water is susceptible to its corrosive effects. The effects are more pronounced above the tidal zone than where the concrete is permanently submerged. In the submerged zone, magnesium and hydrogen carbonate ions precipitate a layer of brucite, about 30 micrometers thick, on which a slower deposition of calcium carbonate as aragonite occurs. These layers somewhat protect the concrete from other processes, which include attack by magnesium, chloride and sulfate ions and carbonation. Above the water surface, mechanical damage may occur by erosion by waves themselves or sand.and gravel they carry, and by crystallization of salts from water soaking into the concrete pores and then drying up. Pozzolanic cements and cements using more than 60% of slag as aggregate are more resistant to sea water than pure Portland cement.
Bacterial corrosion
Bacteria themselves do not have noticeable effect on concrete. However, anaerobic bacteria Thiobacillus in untreated sewage tend to produce hydrogen sulfide, which is then oxidized by aerobic bacteria present in biofilm on the concrete surface above the water level to sulfuric acid which dissolves the carbonates in the cured cement and causes strength loss. Concrete floors lying on ground that contains pyrite are also at risk. Using limestone as the aggregate makes the concrete more resistant to acids, and the sewage may be pretreated by ways increasing pH or oxidizing or precipitating the sulfides in order to inhibit the activity of sulfide utilizing bacteria.
Chemical damage
Carbonation
Carbonation-initiated deterioration of concrete Carbon dioxide from air can react with the calcium hydroxide in concrete to form calcium carbonate. This process is called carbonation, which is essentially the-reversal of-the chemical process of calcination of lime taking place in a cement kiln, Carbonation of concrete is a slow and continuous process progressing from the outer surface inward, but slows down with increasing diffusion depth. Carbonation has two
8

effects: it increases mechanical strength of concrete, hut it also decreases alkalinity, which is essential for corrosion prevention of the reinforcement steel. Below a pH of 10. the steel's thin layer of surface passivation dissolves and corrosion is promoted. For the latter reason, carbon;-*lion is ;tn unwanted process in concrete chemistry. Carbonation can !>e tested by applying Phenolphthalein solution, a pH indicator, over a fresh fracture surface, which indicates non-carbonated and thus alkaline areas with a violet color.
Chlorides
Chlorides, particularly calcium chloride, have been used to shorten the setting time of concrete. However, calcium chloride and (to a lesser extent) sodium chloride have been shown to leach calcium hydroxide and cause chemical changes in Portland cement, leading to loss of strength, as well as attacking the
steel reinforcement present in most concrete.
Sulphates
Sulphates in solution in contact with concrete can cause chemical changes to the cement, which can cause significant microstructural effects leading to the weakening of the cement binder.
Leaching
Leaching is a self healing of cracks with chemical process in concrete.
Physical damage
Damage can occur during the castinr and de-shuttcring processes. The corners of beams for instance, can be damaged during the removal of shuttering because they are less effectively compacted by means of vibration (improved by using form-vibrators). Other physical damage can be caused by the use of steel shuttering without "base plates. The steel shuttering pinches the top surface of a concrete slab due to the weight of the next slab being constructed.
Decaying of woods
9

Damage to wood frame buildings by mildew, mold, staining, and decay is easily
preventable. It is usually caused by design flaws, poor workmanship, and or
neglected maintenance.
Microorganisms cause mildew, mold, staining, and decay, they belong to a huge
group of primitive plants called fungi. Fungi have four growth requirements
similar to our basic human needs: food, water, air, and a satisfactory
temperature. Decay will be prevented if any one of the four requirements is
removed. The most effective way to prevent fungal deterioration is to keep the
area drv.
SYMPTOMS OF WATER INFILTRATION
Mildew
Exterior mildews often appear on unheated projecting parts of buildings such
as eaves that cool quickly after sunset causing dew to form. North facing walls
and walls shaded by trees and other obstructions that restrict sunlight and
airflow are also candidates. While mildew won't grow where siding crosses stiids
and other thermal bridges, mildew may thrive over the cooler, insulated bays
between studs, where dew persists to provide the needed moisture. These
mildews are easily removed with a chlorine and detergent, solution.
Mold
Molds need a surface moisture content of about 20% to get started. Molds tend
to be a discoloration on the surface of wood. Discoloration aside, molds
generally have little effect on wood's integrity. Prevention lies wholly in
controlling air moisture levels and condensation through proper site drainage
and ventilation.
Staining Fungi
Staining fungi is found almost exclusively in freshly sawn lumber. If not
treated, or if the moisture content is not reduced to an intolerable level, this
fungi can destroy certain wood cells leaving the wood susceptible to decay.
Decay Fungi (Dry Rot)
While discoloration by mildew, mold, and staining fungi is only an appearance
problem, deear-fungus threatens the structural integrity of wood"."Suitably
termed the "slow fire", these fungi eat the very cellulose of which wood cells are
made. Decay fungi are what we commonly call dry rot, even though it is caused

by water. Moisture content is the critical factor that makes wood susceptible to decay. It must exceed 28%, and liquid water must be present in cell cavities before decay fungi can gain a toehold. Once established, some fungi can carry on their destruction at a moisture content as low as 20%. When moisture content falls below this level, all fungal activity stops. Thai's one reason why framing lumber is dried to 19% moisture content or less.
It doesn't take a trained eye to recognize decay in its advanced stages. Wood is visibly discolored, spongy, and musty. Surfaces may be stringy, shrunken, or split across the grain. Decay extends deep into the wood and strength loss is significant. Before repainting the exterior or interior of your house, look for evidence of mildew or mold on the wall surfaces. Remove mildew or mold with an application of a bleach and water mixture. When you purchase your house - paint, have a mildicide added to the the paint or purchase the mildicide at your local paint store and add it to the paint.
Hence, in order to avoid the loss due the to the corrosion of the metals and detonation of the wood the coating composition of the present invention are designed.
Epoxy resin based formulations are marked by the drawback of the powdery in nature which are at the time of application need to be dissolved in suitable ' vehicle.
For the application of the epoxy resins are need to be mixed with the polyacrylate material, and the composition formed such is need to fully utilized - at the one stretch, which is not possible to store, it becomes it becomes hard after mixing, such property of the epoxy resins is limiting factor for. the preparation of the coating compositions or adhesion compositions.
Due to its powdery in nature it make it very difficult to achieve results with the consistenc3', film formed due to such deposition also non continuous, due to such reasons epoxy resins arc less popular,
The common ingredients of the present coating composition is as discussed below,

11

Epoxy or polyepoxide is a thermosetting epoxide polymer that cures (polymerizes and crosslinks) when mixed wiih a catalyzing agent or hardener. In Preferred embodiment epoxy resins are selected from between epichlorohydrin and bisphenol-A or other known epoxy resins either sysnethic or natural in origen.
The coating dries quickly providing a tough, UV resistant, protective coating wiih excellent ultimate hardness, and good mar and abrasion resistance. They arc designed for rapid dry protective coating applications. Ambient cure epoxy coatings provide excellent physical properties in exterior applications. These products have excellent adhesion to various metal substrates. Their low VOC and water clean up makes them a natural choice for factory cast iron, cast steel, cast aluminum applications and reduces exposure and flammability issues associated with solventborne coatings. They are usually used for industrial and automotive uses as they are high heat resistant (as latex-based and alkyd-based paints usually burn, thus peel, with slight high heat temperatures).
Polyester Epoxies are used as powder coatings for washers, driers and other "white goods". Fusion Bonded Epoxy Powder Coatings (FBE) are extensively used for corrosion protection of steel pipes and fittings used in the oil and gas industry, potable water transmission pipelines (steel), concrete reinforcing rebar et cetera. Epoxy coatings arc also widely used as primers to improve the adhesion of automotive and marine paints especially on metal surfaces where corrosion (rusting) resistance is important. Metal cans and containers are often coated with epoxy to prevent rusting, especially for foods like tomatoes that are acidic. Epoxy resins are also used for high performance and decorative flooring applications especially terrazzo flooring, chip flooring and colored aggregate flooring.
In preferred embodiment-polyester Resin refers to unsaturated resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Among other uses, it is the basic component of SMC/BMC.

Unsaturated polyesters are condensation polymers formed by the reaction of polyols (also known as polyhydric alcohols, organic compounds with multiple alcohol or hydroxy functional groups) and polycarboxylic that contain double bonds. Typical polyols used are glycols such as ethylene glycol. The usual polycarboxylic acids used are phthalic acid and malcie acid.
Unsaturated polyesters differ from saturated polyesters such as polyethylene lerephthalate which constitutes the polyester films and fibers of commerce in that acids or glycols having double bond unsaturation are included in the formula to provide reactive olefinic unsaturation in the unsaturated polyester alkyd.
Polyester resins are thermosetting; "thermosetting" means the plastic softens when initially heated, but sets permanently rigid once it has cooled (as opposed to "thermoplastics", which re-soften with heat). Polyester resin is often purchased in liquid form for the production of glass-reinforced plastic. In this case, a catalyst (typically methyl ethyl ketone peroxide (MEKP) (also known as butanone peroxide) is used to initiate the polymerization reaction; benzoyl peroxide is a somewhat less hazardous alternative suitable for some purposes.
Epoxy matting Hardener D68 is the salts of polycarboxylic acid with cyclic amidine. The hardener, applied in suitable formulations can produce epoxy or Hybrid coatings for matt or semi-matt gloss with very good flowing and properties. Variation between matt and semi-matt surface can be obtained by-means of suitable adjustment of formulation.
Hybrid coating with matt or semi-matt gloss may be achieved by replacing some of the polyester in the formulation with an equivalent quantity of D68.The following gives the formulations of hardeners for matt epoxy coatings
Hybrid coating with matt or semi-matt gloss may be achieved by replacing some of the polyester in the formulation with an equivalent quantity of D68.The following gives the formulations of hardeners for matt epoxy coatings.

Item
604(epoxy,0.12-0.13)
■ PE (AV.20-35
D68hardener,Dongyuan
MA-100(Carbon Black,Misushi)
DY-88Leveling agent,Dongyuan
Carb-1 (filler, Omiya)
Gloss60

D68 is a leveling agent with silica carrier available from. It's noted that the achievement of matt effect and relevant puppetries of .the film is connected with full cured of coatings.
Benzoin or 2-Hydroxy-2-phenylacetophenone or 2-Hydroxy-l ,2-Diphenyle than one or desyl alcohol or bitter almond oil camphor is an organic compound consisting of an ethylene bridge flanked by phenyl groups and with a hydroxyl and a ketone functional group. It comes as off-white crystals, with a light camphor odor. Benzoin is used as photoinitiotor in the paint compositions.
Hydrogenated Castor Oil Based Rheology Modifiers it is used in the paint composition mainly for the purpose,
• Sedimentation: During storage, the coating must develop a very high viscosity in order to effectively suppress settling of pigments and extenders.
• Coating Application: The coating viscosity must be sufficiently low for ease of application by conventional methods e.g. brushes, roller and spray.

• Levelling: Once applied, the coating must exhibit the correct rheological characteristic so that sag resistance is maximised without detriment to the surface levelling process.
The coating film is now subjected to the low shear conditions of gravity. Here it is desirable that the film remains in place during the drying process and also that a high degree of surface levelling be obtained. In order to effectively address sag resistance and surface levelling at the same time, the coating system must exhibit a time dependent viscosity recovery, a process known as thixotropic recovery. This is where the viscosity of the coating film increases in a time dependent manner back towards its low shear value. The increase in viscosity suppresses sagging while the time dependent aspect allows sufficient time for effective levelling. If this time dependent viscosity recovery is too rapid, the coating will essentially behave in a pseudoplastic manner. While this will result in excellent sag resistance, the result will be poor surface levelling with any application textures such as brush marks permanently frozen in as a feature of the dried film. Consequently, shear thinning rheology combined with time dependent thixotropic viscosity recovery is a feature highly sought after for most coatings.
There is a wide range of rheology modifiers available to the formulator e.g. silicas, organo-clays, organo-waxes, polyethylene waxes and various surfactants.
Unfortunately, most of these exhibit very little time dependence following application i.e. they tend more towards a pseudoplastic rather than the well balanced thixotropic rheology. Hydrogenated castor oil based rheology modifiers are one particular group of rheology.
in pi cferred embodiment polyacrylate polymer with silica is used to improve the UV-shielding and water-resistance properties of many emulsion-type latexes, poly (styrene-butylacrylate-acrylic acid) (PSBA)-grafted-silica (PSBA-g-silica) hybrid nanoparticles.The influence of PSBA-g-silica hybrid nanoparticles on the interfacial adhesion.-film morphology,-thermodynamics properties, UV-shielding, water-re si stance and mechanical performance of PSBA films were investigated systematically. Ployqacrylate polymer with silica is significant improvement in interfacial adhesion properties, UV-shieldirig, water-resistance

and mechanical properties. Fabricating the silica-based latex nanocomposite is an effective approach to develop the new emulsion-type paints and adhesives.
PTFE Powder Polyethylene Wax PTFE Powder Polyethylene Wax Coil Coatings, Powder Coatings, Industrial Paints, Overprinting Coatings and Printing Inks Smooth PTFE and solid polyethylene have excellent characteristics: it can help to scatter, prevent cohesiveness, promote flowability, enhance anti-abrasion and smoothness, resist to stain in powder coatings. And adding 0.8%~2% into paint and inks will have excellent anti-friction and smoothness grip.
Barium sulfate is a white.crystalline solid with the chemical formula BaSO4
Barium sulfate mixtures are used as white pigment for paints. The combination
of barium sulfate and zinc sulfide (ZnS) is called lithopone. Barium sulfate itself
is called blancfixe. It replaced white lead due to the latter's toxicity. This is
used as a base pigments . ■
In preferred embodiment in addition to active paint ingredients other paint additives like dispersing agents, wetting agents, coating additives, paint chemicals, coating chemicals, oil based additives, water based additives, solvent based additives, silicone defoamer, silicone emulsion defoamer, powder derfoamer, specialty chemicals, emulsifier free additive, Antisetting agents, thickening agents, adhesion promoters, corrosion inhibitors, epoxy resin, pigments etc
In preferred embodiment antisetting agnets such as Antil - 310, an til 312 ™ NILSET - 117 or soya lecithin, thickining agnets like antil 312 ™ , polyurea resin, N-methyl pyrrolidone, these are used thickining agnets, antisetting agents, anti-sagging agnets for solvent based paints, inks, coatings.
- In preferred embodiment wetting agents and stabilizing agents like these are polyuretnane modified high mol wt polymeric hyper dispersants. These are used mainly for setting and wetting of pigments. These agents used to improve gloss levels, stability, anti-setting, anti-floating properties. W &D 1070 is the common.

trade name of are polyurethane modified high mol wt polymeric hyper dispersants.
In preferred embodiment stabilizer is a chemical which tends to inhibit the reaction between two or more other chemicals. It can be thought of as the antonym to a catalyst. It can be also a chemical that inhibits separation of suspensions, emulsions, and foams, paints etc. The paint stabilizing agnets arc stabilizing agent is Zn salt of hydroxypyridine, zinc benzoate. 2-hydroxypyridine, or a mixture thereof. Adhesion promoter such as ANCHOR lM 250 Spl, these are titanate modified prepration in isopropanol.
In preferred embodiment corrosion inhibitor is a chemical compound that, when added to a fluid or gas, decreases the corrosion rate of a metal or an alloy.
The effectiveness, or corrosion inhibition efficiency, of a corrosion inhibitor is a function of many factors like: fluid composition, quantity of water, flow regime.... If the correct inhibitor and quantity is selected then is possible to achieve high, 90-99%, efficiency. Some of the mechanisms of its effect are formation of a passivation layer (a thin film on the surface of the material that stops access of the corrosive substance to the metal), inhibiting either the oxidation or reduction part of the redox corrosion system" (anodic and cathodic inhibitors}, or scavenging the dissolved oxygen.
Some corrosion inhibitors are hexamine, phenylenediamine,
dimethyiethanolamine, sodium nitrite, cinnamaidehyde, condensation products of aldehydes and amines (imines), chromates, nitrites, phosphates, hydrazine, ascorbic acid, and others. The suitability of any given chemical for a task in hand depends on many factors, from the material of the system they have to act in, to the nature of the substances they are added into and their operating temperature.
Nitrite is another anodic inhibitor. If anodic inhibitors are used at too low concentration, they can actually aggravate pitting corrosion, as they form a nonuniform layer with local anodes, corrosion inhibitor agent is K-C or 463

In preferred embodiment pigment is selected from the group consisting of china clay, barite, calcite. zinc oxide, zinc chromate. talc silicon powder, titanium dioxide, carbon block or any other conventional pigments of the desired color from the colouerd complexes of the transition metis or natural colors.
In preferred embodimenl of the invention, the resin is selected from the group consisting of amino aJkyd, aminopolyesters or amino fatty acid akyds, thcrcmosetting acrylic, acrylic and melamine (amino acrylics), modified cpoxys. cpoxyesters, acrylated alkyd, thermoplastic acrylic, silicone or modified silicone, urea formaldehyde, petrasc resin, nitrocelluose, melamine formaldehyde,
In preffered embodiment of the invention, the solvent is selected from the group consisting of toluene, orthoxylene, renine. C-9/GR-150 solvents, paraxylene. n-butanol, methanol, isopropyl alcohol, diaccrone alcohol, isobutyl alcohol, mosstanol, butyl acetate, ethyl acetate, cellosolve acetate, butyl cellosolve, ethyl cellosolve. methyl isobutyl ketone, cyclohexanol, methyl ethyl ketone, dipentcne, xylene mixture, butyi carbitol, or 1 -4 dioxane any mixture thereof.
In preffered embodimenl of the present invention raw matenals are mixed at the definatc ratio to obtain the mixture desiganted as group 'A* additives are in group 'B' and polar and nonpolar solvents in group 'CIn preffered embodiment group 'A' active paint ingridents are pre mixed in a particular ratio. The premixed formed group 'A' of raw matenals is passed through heated extrude at the 80-120 "C which results to semi polymerization of the active materials in the form of pellets. The pehets are pulvarised in to uniform powder form.
The materials of the group 'A' arc epoxy resin 25-40"/) w/w, polyester resin 15-25%w/w matting agents 0.1-2.0% w/w, benzoin 0. ] -0'.5%w/ w t hydrogenated caster oil 0. 1-0,3%w/w, polycarbonate polymer with silica carrier 0.3-1.0% w/w, PTFE modified polyethylene wax 0.1 -0.5 % w/w basic pigment/s such as barium sulphate 35-50 % w/w. These materials in the preffered ratio are mixed
18

in the % w/w portion and extrude at 80-120 ° C to form the semi polymerised
mass which upon pulverization results in to unform powder.
In preffered embodiment group *B' powder form of thre group 'A' as prepared in
earlier step is mixed with the paint additives like antisetting agents, thickning
agents, wetting and stabilizing agnets, adhesion promoters, corrosion
inhibitors, epoxy resins, and desired pigments having preffered color , to form
the materials of the group 'B'.
In preffered embodiment group B' is prepared form the combination of the
group 'A' 85-95% w/w. anti setting agnets .1-1.0 % w/w, thickining agent 0.1-
1.0 % w/w, wetting and stabilizing agents 0.2-1.2 % w/w, adhesion promoter
O.l-l.o % w/w, corrosion inhibitor 0.1-0.5% w/w, epoxy resin 2.0-6.0% w/w
and desired pigment 1.0-2.0% w/w.
These materials are properly mixed to form group TB'
In preffered embodiment group 'C non polar solvents like toluene, 1-4 dioxane
and rnethyl ethyl ketone are mixed to form the solvents as the group 'C'
In preffered embodiment group "C' are mixed toluene 70-90 % w/w, 1-4 dioxane
5.0-15.0 % w/w and methyl ethyl ketone 5.0-15.0 % w/w.are mixed to form the
solvents of the group 'C
In the most preffered embodiment tne materials formed as group US' and group
'C are mixed properly to form the desired paint composition.
In the most preffered embodiment group 'B* and group *C' are mixed at the ratio of 45-55 % w/w and group 'C are mixed at the 45-55 % w/w to form the paint composition.
Paint composition can be applied on the substarte of the by any conventional means such as by brush, spray, towel or any other method known in the art. The paint applied on the substrate is polymerized on drying leaving thin film on the substarte surface on which-it is applied.
19

The paint formed subjected for the following pre and post application tests Pre-application test

Sr. No Name of the test Stantdard unit 1 Test results
i
1 Density (wt per lit) 1.137 kg/lit
2 Mass solid 53.69%
3 Volume Solids 50.00%
4 Drying property at 30 °C (a)Surface dry-time
(a) Hard dry 15-20 min 60 min
5 Apperence and application Smooth/homogeneous
unsettled liquid and
appliocable by brush
and spray
Post-application test

Sr. No Name of the test Stantdard unit
i Test results
1 . Gloss
i 40-52 @ 60 'c'
2 Film thickness (DFT) j 40-60 microns
3 Flexibility ( bending 1 test) ! Bending at 180 C ] ASTM D 522 conicAL % elongnation Mandril test Passed till smallest dia passes 80-100%
4 Impact test , 30 joules passes direct and indirect.
5 Cross hatch section |
■ i Passes 4 B
6 Holiday/pinhole test No any pin holes except edges
7 Shore hardness
Shore D on metal
sample j
! 88

Shore A on film i
sample |
i 82 i
8 Scrach hardness j 2.2 kg Passes
9 % Elongation of film 80-100%
10 Water absorption 24 1.16/%
Mrs
11 Taber Abrasion test (CS-17 10000 C/S) 178.3 mg wt loss
12 Pull off adhesion on 10.2 mg wt loss
metal
13 Pull off adhesion on coneret 3.0 mpa
14 Bond strength.( pull
on test) Against concret (a)
Bond stress of uncoated rebar 4.28 Mpa
(b) Bond stress of caoted rebar (c) % efficency 4.48 Mpa
increse around 5 % more
i than uncoated
Long term Performance test

Sr. No Name of the test Stantdard unit Test results
1 Salt spary test ASTM B 117 200 hrs passes
2 Condesnation test 500 Hrs passes
3 Weathering artifical test 100 hrs passes with brightness in color
Immersion service test

Sr. No Name of the test Stantdard unit Test results
1 10% HC1
i
I i
I
— — . i No effect on surface

10% H2SO4

No effect on surface

10%HNO3

No effect on surface

L

10 NaOH Drop test of MEK

No effect on surface
No effect on surface

Example 1
Preparation of group A
Epoxy resin prefreably epichlorhydrin bis-phenol A at 34 % w/w mixed with polyester resin 20 % w/w,.mating agent 1.0% w/w, benzoin 0.39 % w/w , hydrogenated caster oil 0.2% w/w, p.olyacrylate polymer with silica carrier 0.7 % w/w, PTFE modified polyethylene wax 0.2 % w/w, barium sulphate 43-51%. w/w are extrduded at the 100 °C.
Prepration of group B
92.2 % w/w of group A mixed with paint additives viz 0.5 % w/w thickning agent, 0.5 % w/w wetting and stabilising agent, 0.7 % w/w adhesion promoter, 0.4% w/w corrosion inhibitor, 0.2 % w/w of epoxy resin 0.2 %w/w and
pigment 1.5 %.
Prepration of group C
Non polar solvents like toluene 81 % w/w and 1-4 dioxane 9 % are mixed with MEK 10 % w/w to form solvent mixture.
Prepartion oi paint
Paint composition is formed by mixing 48 % w/w of the group *B' and 52 % w/w group 'C'to form paint composition.

Claims;
1. A single component liquid epoxy polyester paint composition consisting
(a) group 'A' material components,
(b) group 'B'material components,
(c) group'C solvent mixture,

2. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' materia) components are about 25 to 40 parts by weight of a epoxy resin, about 15.0 to 25 parts by weight of a polyester resin, matting agents by weight 0.1 to 2.0 benzoin by weight 0.1 to 0.5 hydrogentaed caster oil by weight 0.1 to 0.3, polycarbonate with silica carrier by weight 0.3 to .1.0, polyetheylene wax by weight 0.1 to 0.5, base pigment by weight 35 to 50
3. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 13' material components are about about 85 to 95 parts by weight group 'A' and paint additives.
4. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'C solvent mixture compositon of polar and non polar solvents.
5. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' material component is about 45-55 parts by weight and group 'C solvent mixture is about parts by weight 45-55 are mixed to form liquid epoxy polyester paint composition.
6. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component epoxy resin is epichlorohydrin or bispbenol-A or mixture thereof,
7. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component polyester resin is unsaturated resins formed by basic dibasic organic acids and polyhydric alcohols preferably methyl ethyl ketone peroxide, benzoyl peroxide.
8. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'A' material component matting hardener is D68 which [s salt of polycarboxylic acid and amidine.
9. A single component liquid epoxy polyester paint composition

according to claim 1 wherein group "A' material component base pigment is barium sulphate, zinc sulphide, lithophone.
10. A single component liquid epoxy polyester paint composition according to claim 1 wherein group (B' paint additives antiseUing agnets. wetting agents, stabilizing agents, corrosion inhibitors, resins, pigments.
11. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' antisettling agents are Antil -310, Antil 312, NILSET-117, soya lecithin, polyurea resin. N-methyl pyrrolidone.
12.A A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' stabilizing agnets are W&D 1070. ANCHOR 250,
13. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' corrosion inhibitors are hexamine, phenylenediamine, dimethylethanolamine, sodium nitrite, cinnamaldehyde, condensation products of aldehydes and amines (imines), chromates, nitrites, phosphates, hydrazine, ascorbic acid.
14. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'B' resins are amino alkyd, aminopolyesters or amino fatty acid akyds, theremosetting acrylic, acrylic and melamine (amino acrylics), modified epoxys, epoxyesters, acrylated alkyd, thermoplastic acrylic, silicone or modified silicone, urea formaldehyde, petrase resin, nitrocelluose, melamine formaldehyde
15. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'S'pigments are pigment is selected from the group consisting of china clay, barite, calcite, zinc oxide, zinc chromate, talc, silicon powder, titanium dioxide, carbon black, coloured transition metal complexes.
16. A single component liquid epoxy polyester paint composition according to claim 1 wherein group 'C solvents are of toluene, orthoxylene, renine, C-9/GR-150 solvents, paraxylene, n- butanol, methanol, isopropyl alcohol, diacetone alcohol, isobutyl alcohol, mosstanol, butyl acetate, ethyl acetate, cellosolve ■ acetate, butyl cellosolve, ethyl cellosolve, methyl-isobutyl ketone, cyclohexano!, methyl ethyl ketone, dipentene, xylene mixture, butyl carbitol, or 1-4 dioxane any mixture thereof.
24

18. A process for preparation of a single component liquid cpoxy polyester paint
coin posit ion comprising:
(a) exlrudtion of components which arc about 25 to 40 pans by weight
of a cpoxy resm, about 1 5.0 to 25 parts by weight of a polyester resm, matting
agents by weight. 0.1 to 2.0 benzoin by weight 0.1 to 0.5 hydrogeniacd caster
oil by weight 0.1 to 0.3. polycarbonate with silica carrier by weight 0.3 to 1.0,
polvelheylene wax by weight 0.1 to 0.5, base pigment by weight 35 to 50 at the
18-120 °C to form polymerised pcllates.
(b) pulverization of the step (a) polymerised peliates in lo powder form.
(c) mixing of 85-95 parts by weight of setp(b) powder with the painl additvives,
(d) preparation of the solvent mixture of polar and non polar solvents.
(e) mixing of step ( C) and step (c) solvents at 45-55 parts by weight to form liquid cpoxy polyester paint composition.
19. A single component liquid epoxy polyester paint composition as descibed
herein with reference to example and description.

Signature of applicant

f

Documents:

285-mum-2009-claims(11-2-2009).pdf

285-MUM-2009-CLAIMS(AMENDED)-(26-11-2012).pdf

285-MUM-2009-CLAIMS(AMENDED)-(30-4-2012).pdf

285-MUM-2009-CORRESPONDENCE(26-11-2012).pdf

285-mum-2009-description(complete)-(11-2-2009).pdf

285-mum-2009-form 1.pdf

285-mum-2009-form 18.pdf

285-mum-2009-form 2(title page).pdf

285-mum-2009-form 2.doc

285-mum-2009-form 2.pdf

285-MUM-2009-FORM 26(26-11-2012).pdf

285-mum-2009-form 3.pdf

285-mum-2009-form 5.pdf

285-mum-2009-form 9(11-2-2009).pdf

285-MUM-2009-REPLY TO EXAMINATION REPORT(30-4-2012).pdf

FORM9.TIF

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Patent Number

254711

Indian Patent Application Number

285/MUM/2009

PG Journal Number

50/2012

Publication Date

14-Dec-2012

Grant Date

10-Dec-2012

Date of Filing

11-Feb-2009

Name of Patentee

NATWARLAL J. MEHTA

Applicant Address

A-7, GIRIRAJ INDUSTRIAL ESTATE, MAHAKALI CAVES ROAD, ANDHERI (EAST), MUMBAI-400093

Inventors:

#	Inventor's Name	Inventor's Address
1	NATWARLAL J. MEHTA	A-7, GIRIRAJ INDUSTRIAL ESTATE, MAHAKALI CAVES ROAD, ANDHERI (EAST), MUMBAI 400 093

PCT International Classification Number

C09D167/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA