Claims
- 1. A granular detergent composition comprising:
(a) from about 0.01% to about 50% by weight of an anionic sulphonate surfactant; (b) from about 0.01% to about 45% by weight of a hydrotrope; and (c) from about 0.5% to about 5% by weight of a cationic surfactant, wherein the granular detergent composition is substantially free of anionic sulphate surfactants.
- 2. The granular detergent composition according to claim 1, wherein the detergent composition comprises from about 20% to about 50% by weight of an anionic sulphonate surfactant.
- 3. The granular detergent composition according to claim 1, wherein the anionic sulphonate surfactant is selected from the group consisting of sodium linear alkyl benzene sulphonate, MLAS, PS, MES, AOS (please describe the full names) and mixtures thereof.
- 4. The granular detergent composition according to claim 1, wherein the detergent composition is coated with a water soluble coating material selected from the group consisting of anionic sulphonate surfactants, hydrotropes, and mixtures thereof.
- 5. The granular detergent composition according to claim 4, wherein the water soluble coating material comprises a hydrotrope selected from the group consisting of polyethylene glycols, polypropylene glycols, sulphonate salts and mixtures thereof.
- 6. The granular detergent composition according to claim 4, wherein the hydrotrope is selected from the group consisting of sodium xylene sulphonate, sodium toluene sulphonate, sodium cumene sulphonate, alkyldiphenyloxide disulphonate having an alkyl group chain length of from C1 to C10, and mixtures thereof
- 7. The granular detergent composition according to claim 4, wherein the water soluble coating material is a mixture of an anionic sulphonate surfactant and a hydrotrope in a ratio of anionic sulphonate surfactant to hydrotrope of from about 95:5 to about 5:95.
- 8. The granular detergent composition according to claim 4, wherein the detergent composition has a geometric mean particle diameter of from about 400 microns to about 1500 microns with a geometric standard deviation of from about 1 to about 2.
- 9. A process for preparing the granular detergent composition according to claim 1, comprising the steps of:
(a) mixing the anionic sulphonate surfactant, the hydrotrope and the cationic surfactant; (b) adding other detergent ingredients; and (c) drying the detergent mixture from step (b).
- 10. The process according to claim 9, further comprising the step of:
(d) passing the detergent granules to a coating mixer; (e) providing the water soluble coating material to the coating mixer; and (f) at least partially coating the granules in the coating mixer to form the coated detergent granular composition.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority under 35 U.S.C. §120 to International Application Serial No. PCT/US00/19136, filed Jul. 13, 2000 (Attorney Docket No. AA-486F).