Patent ID: 6020297
Filing Date: 2000-02-01
Classification: C11D

Abstract:
A cleaning composition comprising at least one surfactant and from about 0.1 to about 50 weight percent, based on the weight of the cleaning composition, of a low color or colorless polymaleate as determined by a Gardner color number of 8 or less, said polymaleate is prepared by aqueous solution polymerization comprising:(a) 70 to 99.9 weight percent of maleic acid;(b) 0.1 to 30 weight percent of an allylic sulfonate monomer having the formula ##STR5## wherein R.sub.1 is selected from the group consisting of H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.6 -C.sub.10 aryl, ester, and COOH; R.sub.2 is O--R.sub.3 wherein R.sub.3 is selected from the group consisting of C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkoxy, and C.sub.6 -C.sub.10 aryl; n is from 0 to 1; and M.sup.+ is a cation selected from the group consisting of H.sup.+, NH.sub.4.sup.+, alkali metals, alkaline earth metals, and quaternary organic amines; and(c) 0.5 to 50 .mu.m, based on the moles of monomer, of a polyvalent transition metal ion selected from group consisting of Group IVA, VA, VIA, VIIA, VIIIA, IB, IIB, and combinations thereof;wherein the weight percents are based on the total weight of monomer, provided that 10 to 60 mole percent of the carboxylic acid groups on the maleic acid are neutralized prior to polymerization.