Title of Invention	A BATCH PROCESS FOR THE PREPARATION OF A GRANULAR DETERGENT COMPOSITION.
Abstract	A batch process for the preparation of a granular detergent composition or component having a bulk density of at least 650 g/litre, which process includes the step of neutralising a liquid acid precursor of an anionic surfactant with a solid water-soluble alkaline inorganic material, the process being characterised by the steps of: (i) fluidising a particulate solid water-soluble alkaline inorganic material in an amount in excess of that required for neutralisation, optionally in admixture with one or more other particulate solids such as herein described, in a high-speed mixer/granulator having both a stirring action and a cutting action; (ii) adding the acid precursor to the high-speed mixer/granulator whereby the temperature of the contents of the high-speed mixer/granulator exceeds 55°C and neutralisation of the acid precursor by the water-soluble alkaline inorganic material occurs while the mixture remains in particulate form; (iii) granulating the mixture in the high-speed mixer/granulator, in the presence of a liquid binder, whereby a granular detergent composition or component having a bulk density of at least 650 g/litre is^formed. A process as claimed in claim 1, wherein in step (ii) the acid precursor is added gradually to the high-speed mixer/granulator.

Title of Invention

A BATCH PROCESS FOR THE PREPARATION OF A GRANULAR DETERGENT COMPOSITION.

Abstract

A batch process for the preparation of a granular detergent composition or component having a bulk density of at least 650 g/litre, which process includes the step of neutralising a liquid acid precursor of an anionic surfactant with a solid water-soluble alkaline inorganic material, the process being characterised by the steps of: (i) fluidising a particulate solid water-soluble alkaline inorganic material in an amount in excess of that required for neutralisation, optionally in admixture with one or more other particulate solids such as herein described, in a high-speed mixer/granulator having both a stirring action and a cutting action; (ii) adding the acid precursor to the high-speed mixer/granulator whereby the temperature of the contents of the high-speed mixer/granulator exceeds 55°C and neutralisation of the acid precursor by the water-soluble alkaline inorganic material occurs while the mixture remains in particulate form; (iii) granulating the mixture in the high-speed mixer/granulator, in the presence of a liquid binder, whereby a granular detergent composition or component having a bulk density of at least 650 g/litre is^formed. A process as claimed in claim 1, wherein in step (ii) the acid precursor is added gradually to the high-speed mixer/granulator.

Full Text

Documents:

17-BOM-1991-CANCELLED PAGES.pdf

17-BOM-1991-CORRESPONDENCE(IPO).pdf

17-BOM-1991-CORRESPONDENCE(RECEIVED).pdf

17-BOM-1991-FORM 2(GRANTED).pdf

17-BOM-1991-FORMS.pdf

17-BOM-1991-SPECIFICATION(AMENDED).pdf

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Patent Number

171897

Indian Patent Application Number

17/BOM/1991

PG Journal Number

42/2012

Publication Date

19-Oct-2012

Grant Date

21-Jan-1994

Date of Filing

15-Jan-1991

Name of Patentee

HINDUSTAN LEVER LIMITED

Applicant Address

HINDUSTAN LEVER HOUSE, 165/166 BACKBAY RECLAMATION , MUMBAI.

Inventors:

#	Inventor's Name	Inventor's Address
1	DAVID GRORGE EVANS	14 PICTON CLOSE, OXTON BIRKENHEAD, L43 2NS, ENGLAND.
2	GORDON GEORGE MCLEOD	68 SHAFTESBURY AVENUE, VICARS CROSS, CHESTER,CH3 5LH , ENGLAND.
3	DONALD PETER	74 ETON DRIVE, THORNTON HOUGH WIRRAL, L63,1JF, ENGLAND.
4	KORKUT REMZI YUREGIR,	43 MEADOWCROFT, HESWALL WIRRAL, MERSEYSIDE, L60 1UU, ENGLAND.

PCT International Classification Number

C11D1/12

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	9001285.7	1990-01-19	GB