Patent ID: 6767882
Filing Date: 2004-07-27
Classification: C11D

Abstract:
A process for preparing a coated granular detergent composition comprising the steps of:i) providing a granular detergent composition having granules containing detergent active materials; ii) passing said detergent granules to a coating mixer; iii) providing a coating solution of a water soluble coating material, wherein the water soluble coating material is a mixture of an anionic surfactant and a hydrotrope, wherein a) the anionic surfactant is selected from the group consisting of sodium linear alkyl benzene sulfonate, hydrophobic secondary alkyl sulfate mixture thereof; b) the hydrotrope is selected from the group consisting of sodium xylene sulfonate, alkyldiphenyloxide disulfonate having alkyl group chain length of from C1-C10, and mixture thereof; and c) the ratio of surfactant to hydrotrope is from about 70:30 to about 95:5; and iv) at least partially coating said granules in said coating mixer to form a coated detergent granular composition; wherein said coated detergent composition has a geometric mean particle diameter of from about 400 microns to about 1500 micorons with a geometric standard deviation of from about 1 to about 2.