Title of Invention

A BIODEGRADABLE LUBRICANT COMPOSITION FOR TWO-STROKE ENGINE

Abstract

The present invention relates to a biodegradable lubricants composition for two-stroke engine, comprises simple or trans mono-esters such as alkyl ester or epoxy alkyl ester or aryl alkyl ester or mixture thereof, based on non-edible vegetable oils, such as Karanja (Pongamia Glabra), Neem (Mellia Azadirachta), Ricebran (Oryza Sativa), Mahua (Madhuca Indica), Castor (Ricinus Communis), Linseed (Flax-Linium Usitatissimum.), other similar oils or mixture thereof. In addition to mono-esters, the composition also contains an antioxidant, a metal deactivator, an extreme pressure additive, an antifoaming agent, a pour point depressant, a anti-icing agent, a corrosion inhibitor, a detergent-dispersant, a combustion improver, according to which it produce lower amounts of observable smoke in the exhaust-emission as a result of combustion in a two-stroke gasoline engine, needs lower concentrations, produce lower amounts of observable smoke in the exhaust-emission, require no miscibility-enhancing solvents, needs lower concentrations, and are significantly biodegradable. The lubricant compositions of the present invention would be particularly suited for water and air cooled 2T engines such as operating outboard motors, snow mobiles, motor boats, motorcycles, scooters, mopeds, gen-sets and a variety of landscaping equipment, e.g., lawn mowers, chain saws, string trimmers and blowers, etc.

Full Text

FIELD OF THE INVENTION The present invention relates to a biodegradable lubricants composition for two-stroke engine. This invention particularly relates to biodegradable lubricating oil composition for two-stroke gasoline engine that mainly contains chemically modified non-edible vegetable oils such as mono-esters. In addition to mono-esters, the composition also contains an antioxidant, a metal deactivator, an extreme pressure additive, an antifoaming agent, a pour point depressant, a anti-icing agent, a corrosion inhibitor, a detergent-dispersant and a combustion improver. The product of this invention has utility to produce lower amounts of observable smoke in the exhaust-emission as a result of combustion in a two-stroke gasoline engine, at lower oil-fuel ratio and significantly biodegradable. BACKGROUND AND PRIOR ART OF THE INVENTION The two-stroke gasoline engine is a well known power source for outboard motors, snow mobiles, motor boats, motorcycles, scooters, mopeds, gen-sets and a variety of landscaping equipment, e.g., lawn mowers, chain saws, string trimmers and blowers. The widespread use of two stroke gasoline engines is primarily due to their simple design and lightweight construction, their ability to provide high power output with quick starts at low temperature and their relatively low cost. Two-stroke gasoline engines are operated using a mixture of gasoline and a lubricant in prescribed proportions. Because the fuel contains a gasoline • lubricant mixture, large amounts of smoke are generated and emitted in the exhaust. The lubricant must provide satisfactory performance characteristics under severe operating conditions. Lubricants for two-stroke gasoline engines are traditionally composed of a mineral oil or synthetic base fluid, performance additive(s) and a solvent, ordinarily a relatively low boiling petroleum distillate, to enhance gasoline/lubricant miscibility. The technologies developed to date for reducing exhaust emissions from four-stroke car and truck gasoline engines have not been successfully adapted to two-stroke gasoline engines. Hence, there is growing public concern over the high levels of hydrocarbon emissions from these small gasoline engines, as hydrocarbons do not readily biodegrade. The hydrocarbon emissions are a consequence of the basic design of the gasoline engine. Specifically, in the power stroke of a typical two-stroke gasoline engine, air, oil and fuel are drawn into the crankcase as the combined charge is compressed in the space above the piston. In the exhaust stroke, the burnt gases are discharged through exhaust ports, and a fresh combustible charge is transferred from the crankcase to the space above the piston. Because the exhaust ports open before and close after transfer of the fresh combustible charge occurs, as much as 18 % of the fresh charge will 'be discharged unburned with the exhaust. Consequently, hydrocarbon emissions far exceed the level of emissions from a comparable four-cycle engine. Water-cooled outboard motors exhaust directly into the water, giving rise to water pollution, whereas the other devices mentioned above, which are equipped with air-cooled two-stroke gasoline engines, produce emissions that pose a serious air pollution problem. For example, many two-stroke gasoline engines produce up to fifty times the pollution of truck engines per horsepower hour. Visible smoke emissions in the exhaust from two-stroke gasoline engines have also recently come under increased scrutiny and regulation. In addition, smoky emissions from two-cycle gasoline engines are also becoming a problem from an aesthetic standpoint. The petroleum based lubricating oils are hydrocarbons consisting of naphthenes,. paraffins, aromatics, polynuclear aromatics and unsaturates. Various additives, which are primarily chemicals of defined composition or structure, are added to the lube oils to improve the physico-chemical properties and performance. Petroleum based lube oils, generally suffer from many disadvantages such as high toxicity to the environment, poor biodegradability and inconsistent characteristics with change in crude oil composition. The other types of lubricants known as synthetic lubricants are deigned for use in extreme conditions of temperature pressure, radiation or chemical and have excellent lubricity and thermal stability. The synthetic lubricants are relatively costly, also toxic to environment and are may not be readily biodegradable. Commonly used synthetic compounds for lubricants are (a) Poly-glycols, (b) polybutenes, (c) dibasic acid esters, (d) fluoropolymers, (e) polyal esters, (f) phosphate esters, (g) silicones, (h) poly-alpha olefins (i) other similar fluids. The above-noted pollution and smoke problems are exacerbated by the presence of volatile organic solvents in the lubricant. Moreover, some of the solvents used as miscibility enhancers have relatively low flash points, thus creating a potential fire risk, which is of particular concern in connection with the storage and transportation of such products. Certain types of mono-esters from non-edible vegetable oils are useful to generate reduced amounts of observable smoke as a result of combustion in a two-cycle gasoline engine, completely biodegradable, can be used on lower concentration, economical than synthetic esters, compatible to mineral gasoline, are capable' of providing the desirable lubricant properties such as good boundary layer lubrication, high viscosity index, high flash point and low volatility. Low thermo-oxidative stability of vegetable oils can be improved with the help of a suitable chemical modification and additive. Vegetable oil that is long chain fatty acid triester of glycerol possesses most of the desirable lubricant properties such as high viscosity index, high flash point, low volatility and good boundary lubrication. As per fatty acid typical composition of vegetable oils, it contains unsaturated acids such as oleic C18:1 as a major component. This reflects the fact that some of the carboxylic acids and/or esters are derived from naturally occurring materials and therefore contain a mixture of compounds the major component of which is the stated compound. Non-edible vegetable oil, which are found in abundance in India and have the potential are, Neem - Mellia Azadirachta, Karanja - Pongamia glabra, Ricebran - Oryza sativa, Mahua- Madhuca Indica, Castor - Ricinus communis, Linseed -Flax oil plant Linium usitatissimum (Linacae), Other similar vegetable oil sources. Reference may be made to US Patent 6,197,731, Zehler, et al., March 6, 2001, Henkel Corporation (Gulph Mills, PA) Smokeless two-cycle engine lubricants Ester base stocks for two-cycle gasoline engine lubricant compositions are disclosed which produce lower amounts of observable smoke in the exhaust emitted as a result of combustion in a two-cycle gasoline engine, require no miscibility-enhancing solvents, have a viscosity of 3.0 cSt to 20.0 cSt at lOO.degree. C. and a smoke index of at least 75. Some of the esters are biodegradable. (Here, synthetic esters of polyol type were used). Reference may be made to US Patent 5,498,353, Lin , et al., March 12, 1996, Chinese Petroleum Corp. (TW) Semi-synthetic two-stroke engine oil formulation. A semi-synthetic two-stroke engine oil formulation which comprises a base oil consisting of a high-viscosity mineral oil, a medium-viscosity mineral oil, a solvent and a mixture of three polyisobutylenes with different molecular weights, and appropriate detergents and dispersants. This semi-synthetic two-stroke engine .has both high lubricity and high detergency, and also meets the requirements of low smoke and low exhaust system blocking. (Here, blend of mineral oil and synthetic oil were used) Reference may be made to US Patent 5,475,171, McMahon, et al., December 12, 1995 BP Chemicals Limited (London, GB2) Two-stroke engine oils. This invention relates to a two-stroke engine oil which comprises polybutene base oils which are either very low in or are substantially free of n-butenes in the polymer backbone. The absence of n-butenes in the polybutenes significantly reduces smoke emission in exhaust gases generated by the use of the engine oil. Polybutenes such as ULTRAVIS.RTM. which are substantially free of chlorine and have a high degree of terminal unsaturation are particularly preferred. (Here, blend of mineral oil and synthetic oil are used) Reference may be made to US Patent 5,378,249, Morrison, January 3, 1995 Pennzoil Products Company (Houston, TX) Biodegradable lubricant. A biodegradable two-cycle engine oil composition comprises about (a) 20 to 85 wt. % of a heavy ester or a mixture of heavy ester oils characterized by a kinematic viscosity of at least about 7.0 cSt at lOO.degree. C., (b) 10 to 85 wt. % of a light ester oil or a mixture of light ester oils characterized by a kinematic viscosity of less than about 6.0 cSt at lOO.degree. C., and optionally an additive, wherein the composition has a biodegradability of at least about 66% as measured by the CEC L-33:T-82 method. (Here, blend of mineral oil and synthetic oil are used) Reference may be made to US Patent 6,573,224, McNeil , et al., June 3, 2003, Bardahl Manufacturing Corporation (Seattle, WA) Two-cycle engine lubricant composition comprising an ester copolymer and a diester. Improved performance of two-cycle and four-cycle engines is achieved by adding to the oil or fuel of such engines a composition that contains a copolymer of an alpha-olefin and a dialkyi fumarate or maleate and/or a synthetic diester compound that has about 30 carbon atoms. For two-cycle engines, the composition preferably contains both chemicals, in addition to an octane booster such as methylcyclopentadienyl manganese tricarbonyl. For four-cycle engines, the composition contains at least one of the copolymer and diester, in addition to a molybdenum or bismuth salt, dimercapto 1,3,4-thiadiazole and sulfur-phosphorous EP and/or chlorinated paraffin. The composition can also act to improve gear and grease lubrication and provide improved lubricity to fuels. (Here, synthetic oil are used) In the prior art for producing two-stroke gasoline engine lube oils, generally, mineral oils or synthetic fluids or complex ester of fatty acids were used to enhance the performance. Biodegradability, smoke reduction and eco-friendliness were not the main criteria. There is a need for biodegradable lubricating oil for two-stroke engine, which are derived from renewable resources, work on lower concentration, reduce emission, readily biodegradable, perform better or at least at par with the mineral lube oil and be cost effective. OBJECTIVES OF THE INVENTION The main object of the present invention is to provide a composition of biodegradable lube oil for two-stroke engine based on mono-esters of non-edible vegetable oils to reduce visible smoke and emission. Another object of the present invention is to keep the lubricant compositions of the invention significantly biodegradable and not to use conventional miscibility enhancer solvents, thereby substantially reducing not only the pollution potential of two-cycle gasoline engines lubricated therewith, but the hazard risk inherent in solvent-containing formulations. Yet another object of the present invention is to provide excellent miscibility of formulated lubricating oil for two stroke gasoline engine with mineral and synthetic oil in all proportions. SUMMARY OF THE INVENTION Accordingly the present invention provides a biodegradable lubricant composition for two-stroke engine comprising: i. mono-esters of non-edible vegetable oil fatty acid in the range of 95.6-99.862 by weight, ii. anti-oxidant in the range of 0.006-0.05% by weight, iii. metal deactivator in the range of 0.006-0.05% by weight, iv. extreme pressure additives in the range of 0.006-0.05% by weight, v. anti-foaming agent in the range of 0.01 to 1.0% by weight, vi. pour point depressant in the range of 0.01 to 1.0% by weight, vii. anti icing agent in the range of 0.01 to 1.0% by weight, viii. corrosion inhibitor in the range of 0.03 to 0.1% by weight, ix. detergent -dispersant in the range of 0.05-0.15 % by weight, x. combustion improver in the range of 0.01 to 1.0% by weight. In an embodiment of the present invention the biodegradable lubricant composition is further comprising: i. mono-esters of non-edible vegetable oil fatty acid used is selected from the group consisting of 2ethyl-1-hexyl(10-epoxy)9 octadecenoic ester of formula [C8H17(>O) CH=CHC7Hi4COOCHCH2(C2H5)C5Hio], 2ethyl-1-hexyl (10-toluene) 9 octa decenoic ester of formula [C8Hi7(C6H4CH3-)CH=CHC7Hi4COOCHCH2 (C2H5)C5Hio], 2ethyl-1- hexyl-(10-o-xylene)-9-octadecenoic ester of formula- [C8Hi7(C6H4C2H6-)CH=CH C7Hi4COOCHCH2 (C2H5) C5Hi0] and a mixture thereof is in the range of: 95.6-99.862 by weight, ii. anti-oxidant in the range of 0.006-0.05%by weight, iii. metal deactivator in the range of 0.006-0.05% by weight, iv. extreme pressure additives in the range of 0.006-0.05% by weight, v. anti-foaming agent in the range of : 0.01 to 1.0% by weight, vi. pour point depressant in the range of 0.01 to 1.0% by weight, vii. anti icing agent in the range of 0.01 to 1.0% by weight, viii. corrosion inhibitor in the range of 0.03 to 0.1% by weight, ix. detergent -dispersant in the range of 0.05-0.15 % by weight, x. combustion improver in the range of 0.01 to 1.0% by weight. In an embodiment of the present invention, the composition as claimed in claim 1, wherein the monoester of non-edible vegetable oil fatty acid used is a monoester of fatty acid with C1 to C16 preferably C7 to C12 primary alcohol. In another embodiment of the present invention, the mono-ester of vegetable oil fatty acid used is selected from the group consisting of simple ester, partially hydrogenated ester, epoxy ester, aryl alkyl ester of fatty acids and a mixture thereof. In still another embodiment of the present invention, the non-edible vegetable oil triglyceride fatty acid used for making ester is selected from the group consisting of C18:1, C18:2, C18:3, having the mono-unsaturation character in the range of about 50 to 70 weight percent. In still another embodiment of the present invention, the non-edible vegetable oil used is selected from the group consisting of karanja (Pongamia glabra) oil, neem (Mellia azadirachta) oil, ricebran (Oryza sativa) oil, mahua (Madhuca indica) oil, castor (Ricinus communis) oil, acetylated castor, linseed (flax-L/n/wm usitatissimum) oil and a mixture thereof. In yet another embodiment of the present invention, the anti-oxidant is selected from the group consisting of hindered phenol, alkyl amine, amino phenol and tetrazole. In yet .another embodiment of the present invention, the anti-oxidant is selected from the group consisting of 2,4,6-tri-tert-butylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-t-butyl-4-methylphenol, bicyclic hindered amines, diphenylamines, dinaphthylamines, 4-methyl-2,6-di-(t-butyl) phenol, Methyl hydroxy hydro cinnamide, alkylated 5-amino tetrazole and di-ter. Butyl p-amino phenol. In yet another embodiment of the present invention, the metal deactivator is selected from the group consisting of NN'-disalicylidene 1,2-ethylene diamine, NN'-disalicylidene 1,2-propylene diamine, NN'-disalicylidene 1,2- diamino propane, salicylaldoxime, N-salicylidene-o-aminophenol, 2,2',4'- trihydroxyazobenzene, NN'N"N'"-tetrasalicylidene tetra(amino methyl)-methane, and a mixture thereof. In yet another embodiment of the present invention, the extreme pressure additive is selected from the group consisting of sulfurized neem oil, sulfurized mahua oil, dibenzyl disulphide, suphurized pentadecyl phenol, thiophosphoro luryl oleate, molybdenum salt of thiophosphoro luryl oleate, zinc dialkyl dithio phosphate, dibenzyl diselenate, selenophosphoro luryl oleate, selenophosphoro pentadecyl phenol, molybdenum thiophosphoro pentadecyl phenol, and a mixture thereof. In yet another embodiment of the present invention, wherein the anti-foaming agent is selected from the group consisting of silicone oil, polyvinyl alcohol, polyethers, and a mixture thereof. In yet another embodiment of the present invention, the pour point depressants is selected from the group consisting of diethylhexyl adipate, polymethacrylate, polyvinylacrylate, and a mixture thereof. In yet another embodiment of the present invention, the anti icing agent is selected from the group consisting of dimethyl formamide, ethyl alcohol, hexylene glycol, dipropylene glycol, glycerol, methyl cellosolve, and a mixture thereof. In yet another embodiment of the present invention, the anti-rust or anti-corrosion additive is selected from the group consisting of octyl 1H benzotriazole, ditertiary butylated 1H-Benzotriazole, propyl gallate, polyoxyalkylene polyols, octadecyl amines, nonyl phenol ethoxylates, calcium phenolates of hydrogenated pentadecyl phenol, magnesium alkyl benzene sulfonates, and a mixture thereof. In yet another embodiment of the present invention, the detergent-dispersant is selected from the group consisting of amino alkyl benzene sulfonate, calcium alkyl benzene sulfonate, sodium alkyl benzene sulfonate, propylene teramer succinimide of pentaethylene hexamine, octyl phosphonates, and a mixture thereof. In yet another embodiment of the present invention, the combustion improver is selected from the group consisting of tri crecyl phosphate, hexyl nitrite, ferrocene, cereum oleate, zirconium oleate, magnesium sulfonate, and a mixture thereof. In still another embodiment the biodegradable lubricant composition for two-stroke engine obtained having the following characteristics: i) kinematic viscosity at 100°C is in the range of 7-16 cst, ii) viscosity index is between 100-150, iii) oxidation stability is Pass (IP 48/97) (1 % increase in viscosity & TAN) iv) rotary bomb oxidation test (ROBOT) at 95°C is between 80-190 min., v) flash point is between 200-260°C, vi) pour point is between (-)25 - (-)35°C, vii) ash sulfated % is viii)copper Strip corrosion test 1A, ix) foam test ASTM D892 Pass, x) density at 20°C is between 0.878-0.883. xi) smoke Index is between 200 - 250 xii) detergency Index is between 190-210 xiii)panel cocking test (20 mg max) Pass xiv) biodegradability is between 90-100%. DETAILED DESCRIPTION OF THE INVENTION The composition is significantly biodegradable and ecofriendly from a renewable source exhibit excellent miscibility with mineral and synthetic oil in all proportions. The main advantages of the present invention are, reduces use of petroleum, green house gases & emissions, having higher smoke index 150 to 250, beneficial to farmers, require no miscibility-enhancing solvents, needs lower concentrations such as fuel-lube ratio 100:0.2 to 100:2 and safer to handle due to higher flash point of 200-260°C. The present lubricant would be particularly suited for water cooled or air cooled 2T engine such as operating outboard motors, snow mobiles, motor boats, motorcycles, scooters, mopeds, gensets and a variety of landscaping equipment, e.g., lawn mowers, chain saws, string trimmers and blowers, etc. The temperature used for blending all the components to make the homogenous composition at the moderate temperature of 60°C at which no chemical reaction occur, but all constituents get blended to obtain the desired composition having the synergistic effect reflecting a different characteristics as the individual constituents as described in the examples. The present invention provides a 2T oil which is superior in performance, particularly in smoke reduction, as compared below, (Table Removed)The following examples are given by way of illustration and therefore should not be constructed to limit the scope of the invention. EXAMPLE 1 PURIFICATION OF EPOXY ESTER: Epoxy ester of neem oil fatty acid and ethyl hexanol [major portion is of 2ethyl-1-hexyl-(10-epoxy)-9-octadecenoic ester formula- [C8H17(>O)CH=CHC7Hi4COOCHCH2(C2H5) C5H10] was purified by known method by dissolving it in a mixed solvent containing heptane and ethanol. The mixture of oil and solvent was cooled to 12-15°C and the temperature maintained for 5 to 7 h. The upper layer containing oil and solvent was passed through clay coulmn. Solvent was recovered to get purified oil. EXAMPLE 2 PURIFICATION OF ALKYL ESTER: Alkyl (Toluene substituted) ester of Mahua oil fatty acid and ethyl hexanol [major portion is of 2ethyl-1-hexyl-(10-toluene)-9-octadecenoic ester, formula- [C8Hi7(C6H4CH3-)CH=CH CyHuCOOCHCHaHs) CsHio] was purified by known method by dissolving it in a mixed solvent containing heptane and ethanol. The mixture of oil and solvent was cooled to 12-15°C and the temperature maintained for 5 to 7 h. The upper layer containing oil and solvent was passed through clay coulmn. Solvent was recovered to get purified oil. EXAMPLE 3 PURIFICATION OF ALKYL ESTER: Alkyl (Xylene substituted) ester of acetylated castor oil fatty acid and ethyl hexanol [major portion is of 2ethyl-1-hexyl-(10-o-xylene)-9-octadecenoic ester, formula- [CsHCeHHe-JChCH CyHuCOOCHChh (C2H5) C5H10] was purified by known method by dissolving it in a mixed solvent containing heptane and ethanol. The mixture of oil and solvent was cooled to 12-15°C and the temperature maintained for 5 to 7 h. The upper layer containing oil and solvent was passed through clay coulmn. Solvent was recovered to get purified oil. EXAMPLE 4 PREPARATION OF BASE STOCK (A): Purified toluene ethyl hexyl trans-ester of mahua oil fatty acid 100 % (w/w). The fluid has Kinematic Viscosity at 100°C -7.33 cst, Viscosity index- 104, Oxidation stability - 0.88 % increase in K.Vis (IP 48/97 ), Flash point-228°C, Pour point - (-)15°C, Acid number- EXAMPLE 5 PREPARATION OF BASE STOCK (B): 50 % (w/w) of purified toluene ethyl hexyl trans-ester of mahua oil fatty acid and 50 % (w/w) of purified epoxy ethyl hexyl trans-ester of neem oil fatty acid to achieve kinematic viscosity above 7 cst at 100°C and mixed. The fluid has Kinematic Viscosity at 100°C -8.5 cst , Viscosity index- 100, Oxidation stability - 0.89 % increase in K.Vis (IP 48/97 ), Flash point-208°C, Pour point - (-)12°C, Acid number- EXAMPLE 6 PREPARATION OF BASE STOCK (C): 45 % (w/w) of purified xylene ethyl hexyl trans-ester of acetylated castor oil fatty acid and 55 % (w/w) of purified epoxy ethyl hexyl trans-ester of neem oil fatty acid to achieve kinematic viscosity above 7 cst at 100°C and mixed. The fluid has Kinematic Viscosity at 100°C -9.92 cst, Viscosity index- 105, Oxidation stability - 0.87 % increase in K.Vis (IP 48/97 ), Flash point-218°C, Pour point - (-)12°C, Acid number- EXAMPLE 7 PREPARATION OF BASE STOCK (D): 100 % (w/w) purified alkylated (xylene substituted) ethyl hexyl ester of acetylated castor oil to achieve kinematic viscosity above 7 cst at 100°C and mixed. The fluid has Kinematic Viscosity at 100°C -13.3 cst , Viscosity index- 141, Oxidation stability - 0.96 % increase in K.Vis (IP 48/97 ), Flash point-225°C, Pour point - (-)12°C, Acid number- EXAMPLE 8 PREPARATION OF LUBE OIL FROM BASE STOCK: The base stock- A was blended with additive octyl Samino tetrazole 0.02 % (w/w), NN'-disalicylidene 1,2-ethylene diamine 0.01 % (w/w), dibezyl disulphide 0.02 % (w/w), sulfurized neem oil 0.02 % (w/w), Methyl Hydroxy Hydro Cinnamate 0.008 % (w/w), pentaethylene hexamine dodecyl succinimide 0.01 % (w/w), Silicone polymer oil 0.02 % (w/w), dipropylene glycol 0.01 % (w/w), hexyl nitrite 0.01 % (w/w), calcium and HAB sulfonate having base number 500 in 0.015 % (w/w) concentration. The doping was done at 60°C with stirring for 2 hours. The fluid has Kinematic Viscosity at 100°C -7.62 cst , Viscosity index- 114, Flash point-226°C, Pour point - (-)27°C, Copper strip corrosion(3hrs at 100°C )- 1A EXAMPLE 9 PREPARATION OF LUBE OIL FROM BASE STOCK: The base stock-B was blended with additive p-p-dioctyl diphenyl amine 0.01 % (w/w), NN'-disalicylidene 1,2-ethylene diamine 0.01 % (w/w), dibezyl diselenide 0.02 % (w/w), sulfurized ricebran oil 0.02 % (w/w), zinc dialkyl dithio phosphate 0.005 % (w/w), octyl phosphonate 0.01 % (w/w), hexyl nitrite 0.01 % (w/w), dipropylene glycol 0.01 % (w/w), poly vinyl acrylate 0.02 % (w/w) and alkyl benzotriazole 0.005 % (w/w) concentration. The doping was done at 60°C with stirring for 2 hours. The fluid has Kinematic Viscosity at 100°C -8.10 cst , Viscosity index- 106, Flash point-206°C, Pour point- (-)21°C, Copper strip corrosion(3hrs at 100°C )- 1A. EXAMPLE 10 PREPARATION OF LUBE OIL FROM BASE STOCK: The base stock-C was blended with additive di-t-butyl 4-methyl phenol 0.01 % (w/w), NN'-disalicylidene 1,2-ethylene diamine 0.01 % (w/w), Molybdenum thiophosphoro pentadecyl phenol 0.02 % (w/w), sulfurized hydrogenated karanja oil 0.02 % (w/w), Methyl Hydroxy Hydro Cinnamate 0.015 % (w/w), pentaethylene hexamine propylene tetramer succinimide 0.01 % (w/w), hexyl nitrite 0.01 % (w/w), polymethacrylate 0.02 % (w/w), glycerol 0.01 % (w/w) and octyl phosphonate 0.015 % (w/w) concentration. The doping was done at 60°C with stirring for 2 hours. The fluid has Kinematic Viscosity at 100°C -10.58 cst, Viscosity index- 116, Flash point-215°C, Pour point - (-)27°C, Copper strip corrosion(3hrs at 100°C )- 1A. EXAMPLE 11 PREPARATION OF LUBE OIL FROM BASE STOCK: The base stock-D was blended with additive n-naphthyl 2-phenylamine 0.02 % (w/w), NN'-disalicylidene 1,2-ethylene diamine 0.01 % (w/w), molybdenum thiophosphoro luryl oleate 0.02 % (w/w), dibenzyl diselenide 0.02 % (w/w), zinc dialkyl dithiophosphate 0.025 % (w/w), pentaethylene hexamine propylene tetramer succinimide 0.02 % (w/w), hexyl nitrite 0.01 % (w/w), Silicone polymer oil 0.01 % (w/w), dipropylene glycol 0.01 % (w/w) and alkyl 1H benzotriazole 0.015 % (w/w) concentration. The doping was done at 60°C with stirring for 2 hours. The fluid has Kinematic Viscosity at 100°C -15.64 cst , Viscosity index- 150, Flash point-223°C, Pour point -(-)21°C, Copper strip corrosion(3hrs at 100°C )- 1A. EXAMPLE 12 CHARACTERIZATION AND EVALUATION OF LUBE OIL: The formulations were analyzed and evaluated as per ASTM or BIS methods such as ASTM D445/BIS-14234, P25/56 -K.Viscosity & Viscosity index, ASTM D 92/BIS-P21/69- Flash point, ASTM D1217/BIS-P16 - Rel.Density, ASTM D130/BIS-P15-Copper corrosion, ASTM D97/BIS-P10- Pour point, ASTM D874/BIS-P4- Ash sulphated, ASTM D 664/BIS-P1- TAN, ASTM D4377/BIS-P40- Water, IP 280, 306, 307-Oxidation Test, ASTM D3711- Cocking test, ASTM D4857, 4858, 4859, 4863- Two cycle oil engine test for lubricity-smoke-detergency-varnish-ignition, ASTM D5533- varnish, ASTM D 2157- smoke. (Table Removed) ADVANTAGES OF THE INVENTION The main advantages of the present invention are: b) The lubricant would be particularly suited for operating outboard motors, snow mobiles, motor boats, motorcycles, scooters, mopeds, gensets and a variety of landscaping equipment, e.g., lawn mowers, chain saws, string trimmers, blowers, etc. c) It reduces use of petroleum, biodegradable from renewable source, non- edible vegetable oils. d) Reduce green house gases & emissions, having higher smoke index 150 to 250, and provides better or equivalent performance as mineral oil. We Claim 95.6-99.862 by weight, 0.006-0.05% by weight, 0.006-0.05% by weight, 0.006-0.05% by weight, 0.01 to 1.0% by weight, 0.01 to 1.0% by weight, 0.01 to 1.0% by weight, 0.03 to 0.1% by weight, 0.05-0.15% by weight, 0.01 to 1.0% by weight. 1. A biodegradable lubricant composition for two-stroke engine comprising: i. mono-esters of non-edible vegetable oil fatty acid in the range of ii. anti-oxidant in the range of iii. metal deactivator in the range of iv. extreme pressure additives in the range of v. anti-foaming agent in the range of vi. pour point depressant in the range of vii. anti icing agent in the range of viii. corrosion inhibitor in the range of ix. detergent -dispersant in the range of x. combustion improver in the range of 2. A biodegradable lubricant composition as claimed in claim 1 comprising: i. mono-esters of non-edible vegetable oil fatty acid used is selected from the group consisting of 2ethyl-1-hexyl(10-epoxy)9 octadecenoic ester of formula [CsHi7(>O) CH=CHC7Hi4COOCHCH2(C2H5)C5Hio], 2ethyl-1-hexyl (10-toluene) 9 octa decenoic ester of formula hexyl-(10-o-xylene)-9-octadecenoic ester of formula- mixture thereof is in the range of: anti-pxidant in the range of metal deactivator in the range of extreme pressure additives in the range of anti-foaming agent in the range of : pour point depressant in the range of anti icing agent in the range of corrosion inhibitor in the range of detergent -dispersant in the range of combustion improver in the range of iii. iv. v. vi. vii. viii. ix. x. C7Hi4COOCHCH2 (C2H5) C5Hi0] and a 95.6-99.862 by weight, 0.006-0.05%by weight, 0.006-0.05% by weight, 0.006-0.05% by weight, 0.01 to 1.0% by weight, 0.01 to 1.0% by weight, 0.01 to 1.0% by weight, 0.03 to 0.1% by weight, 0.05-0.15% by weight, 0.01 to 1.0% by weight. 3. The composition as claimed in claim 1, wherein the monoester of non-edible vegetable oil fatty acid used is a monoester of fatty acid with C1 to C16 preferably C7 to C12 primary alcohol. 4. The composition as claimed in claim 1, wherein the mono-ester of vegetable oil fatty acid used is selected from the group consisting of simple ester, partially hydrogenated ester, epoxy ester, aryl alkyl ester of fatty acids and a mixture thereof. 5. The composition as claimed in claim 2, wherein the non-edible vegetable oil triglyceride fatty acid used for making ester is selected from the group consisting of C18:1, C18:2, C18:3, having the mono-unsaturation character in the range of about 50 to 70 weight percent. 6. The composition as claimed in claim 1, wherein the non-edible vegetable oil used is selected from the group consisting of karanja (Pongamia glabra) oil, neem (Mellia azadirachta) oil, ricebran (O/yza sativa) oil, mahua (Madhuca indica) oil, castor (Ricinus communis) oil, acetylated castor, linseed (flax- Linium usitatissimum) oil and a mixture thereof. 7. The composition as claimed in claim 1, the anti-oxidant is selected from the group consisting of hindered phenol, alkyl amine, amino phenol and tetrazole. 8. The composition as claimed in claim 1, the anti-oxidant is preferably selected from the group consisting of 2,4,6-tri-tert-butylphenol, 2,6-di-tert-butyl-4-n- butylphenol, 2,6-di-t-butyl-4-methylphenol, bicyclic hindered amines, diphenylamines, dinaphthylamines, 4-methyl-2,6-di-(t-butyl) phenol, Methyl hydroxy hydro cinnamide, alkylated 5-amino tetrazole and di-ter. Butyl p- amino phenol. 9. The composition as claimed in claim 1, wherein the metal deactivator used is selected from the group consisting of NN'-disalicylidene 1,2-ethylene diamine, NN'-disalicylidene 1,2-propylene diamine, NN'-disalicylidene 1,2- diamino propane, salicylaldoxime, N-salicylidene-o-aminophenol, 2,2',4'- trihydroxyazobenzene, NN'N"N'"-tetrasalicylidene tetra(amino methyl)- methane, and a mixture thereof. 10.The composition as claimed in claim 1, wherein the extreme pressure additive used is selected from the group consisting of sulfurized neem oil, sulfurized mahua oil, dibenzyl disulphide, suphurized pentadecyl phenol, thiophosphoro luryl oleate, molybdenum salt of thiophosphoro luryl oleate, zinc dialkyl dithio phosphate, dibenzyl diselenate, selenophosphoro luryl oleate, selenophosphoro pentadecyl phenol, molybdenum thiophosphoro pentadecyl phenol, and a mixture thereof. 11.The composition as claimed in claim 1, wherein the anti-foaming agent used is selected from the group consisting of silicone oil, polyvinyl alcohol, polyethers, and a mixture thereof. 12.The composition as claimed in claim 1, wherein the pour point depressants used is selected from the group consisting of diethylhexyl adipate, polymethacrylate, polyvinylacrylate, and a mixture thereof. 13. The composition as claimed in claim 1, wherein the anti icing agent is selected from the group consisting of dimethyl formamide, ethyl alcohol, hexylene glycol, dipropylene glycol, glycerol, methyl cellosolve, and a mixture thereof. 14. The composition as claimed in claim 1, wherein the anti-rust or anti-corrosion additive is selected from the group consisting of octyl 1H benzotriazole, ditertiary butylated 1H-Benzotriazole, propyl gallate, polyoxyalkylene polyols, octadecyl amines, nonyl phenol ethoxylates, calcium phenolates of hydrogenated pentadecyl phenol, magnesium alkyl benzene sulfonates, and a mixture thereof. 15. The composition as claimed in claim 1, wherein the detergent-dispersant is selected from the group consisting of amino alkyl benzene sulfonate, calcium alkyl benzene sulfonate, sodium alkyl benzene sulfonate, propylene teramer succinimide of pentaethylene hexamine, octyl phosphonates, and a mixture thereof. 16. The composition as claimed in claim 1, wherein the combustion improver is selected from the group consisting of tri crecyl phosphate, hexyl nitrite, ferrocene, cereum oleate, zirconium oleate, magnesium sulfonate, and a mixture thereof. 17. The composition as claimed in claim 1 having the following characteristics: i) kinematic viscosity at 100°C is in the range of 7-16 cst, ii) viscosity index is between 100-150, iii) oxidation stability is Pass (IP 48/97) (1 % increase in viscosity & TAN) iv) rotary bomb oxidation test (ROBOT) at 95°C is between 80-190 min., v) flash point is between 200-260°C, vi) pour point is between (-)25 - (-)35°C, vii) ash sulfated % is viii)copper Strip corrosion test 1A, ix) foam test ASTM D892 Pass, x) density at 20°C is between 0.878-0.883. xi) smoke Index is between 200 - 250 xii) detergency Index is between 190-210 xiii)panel cocking test (20 mg max) Pass xiv) biodegradability is between 90-100%. 18. A biodegradable lubricants composition for two-stroke engine substantially as described with reference to the examples.

Documents:

779-del-2006-Abstract-(21-01-2014).pdf

779-del-2006-abstract.pdf

779-del-2006-Claims-(21-01-2014).pdf

779-del-2006-claims.pdf

779-del-2006-Correspondence Others-(21-01-2014).pdf

779-del-2006-correspondence-others-1.pdf

779-del-2006-correspondence-others.pdf

779-del-2006-Description (Complete)-(21-01-2014).pdf

779-del-2006-description (complete).pdf

779-del-2006-description (provisional).pdf

779-del-2006-form-1.pdf

779-del-2006-form-18.pdf

779-del-2006-form-2.pdf

779-del-2006-Form-3-(21-01-2014).pdf

779-del-2006-form-3.pdf

779-del-2006-form-5.pdf