Patent ID: 6265369
Filing Date: 2001-07-24
Classification: C11D

Abstract:
A powder laundry detergent composition with improved cold water residue properties, which is a granulated blend of ingredients comprising (1) between about 40-90 weight percent of a water-soluble detergent builder ingredient wherein at least 72 weight percent of the detergent builder ingredient is sodium carbonate; and (2) between about 5-40 weight percent of a detergent active ingredient which is a surfactant blend comprising (a) between about 40-80 weight percent, based on the surfactant weight, of an anionic salt compound corresponding to the formula:R--O--(CH.sub.2 CH.sub.2 O).sub.n --SO.sub.3 Mwhere R is a C.sub.12 -C.sub.13 alkyl group, n is an average number of ethoxylate groups between about 1-9, and M is an alkali metal or ammonium cation, and (b) between about 20-60 weight percent, based on surfactant weight, of a nonionic compound corresponding to the formula:R--O--(CH.sub.2 CH.sub.2 O).sub.n --Hwhere R is a C.sub.12 -C.sub.13 alkyl group, and n is an average number of ethoxylate groups between about 1-9; (3) between about 0-12 weight percent of water-soluble inorganic potassium salt; and (4) less than about 4, 5 weight percent of phosphate.