Patent ID: 6200944
Filing Date: 2001-03-13
Classification: C11D

Abstract:
A solid bleach precursor composition comprising:(a) a bleach precursor selected from the group consisting of nonanoyl oxy benzene sulfonate, (6-octanamido-caproyl)oxybenzenesulfonate, (6-nonanamidocaproyl)oxy benzene sulfonate, (6-decanamido-caproyl)oxybenzenesulfonate, and mixtures thereof;(b) a surfactant system comprising a non-ethoxylated anionic surfactant component and a nonionic surfactant component; and(c) from 0.1% to 20% by weight of the composition of a hydrotrope selected from the group consisting of salts of cumene sulfonate, xylene sulfonate, toluene sulfonate and mixtures thereof;wherein the physical form of said composition is selected from the group consisting of forms wherein:(i) a bleach precursor particulate is coated with one or more layers wherein at least one layer contains one of said surfactant system components and the other of said surfactant system components is in intimate admixture with said bleach precursor;(ii) a bleach precursor particulate comprises one of the surfactant system components, and is coated with one or more layers wherein at least one layer contains said bleach precursor in intimate admixture with the other surfactant system component;(iii) a bleach precursor particulate is coated with either one or more layers, wherein at least one layer contains both components of said surfactant system, or with at least two layers wherein at least one layer contains one of said surfactant system components and at least another layer contains the other said surfactant system components; and(iv) both of said surfactant system components are coated with one or more layers wherein at least one layer contains said bleach precursor;said solid bleach precursor composition being further dusted with zeolite.