Patent ID: 6274545
Filing Date: 2001-08-14
Classification: C11D

Abstract:
A powder laundry detergent composition with improved cold water residue properties, which is a granulated blend of ingredients consisting essentially of (1) between about 40-90 weight percent of a water-soluble detergent builder ingredient wherein at least about 74 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.10 -C.sub.15 alkyl group, n is an average number of ethoxylate groups between about 1-9, and M is an alkali metal or ammonium cation, (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.10 -C.sub.15 alkyl group, and n is an average number of ethoxylate groups between about 1-9; and (c) between about 5-30 weight percent, based on the surfactant weight, of a polyethylene glycol constituent corresponding to the formula:H--(OCH.sub.2 CH.sub.2).sub.n --OHwhere n is an average number of ethoxylate groups between about 20-240; (3) between about 0.5-10 weight percent of water-soluble inorganic potassium salt; and (4) less than about 2 weight percent of phosphate salt.