Thickened aqueous detergent liquid

Abstract

A thickened aqueous detergent liquid composition comprising: (i) at least 5 wt % (more preferably at least 10%, more preferably at least 15% and most preferably at least 20% wt.) of a surfactant system comprising anionic surfactant, (ii) a thickening system comprising a copolymer formed by the addition polymerisation of: (A) 0 to 5 wt % of a first monomer consisting of an ethylenically unsaturated diacid of formula (I): or an unsaturated cyclic anhydride precursor of such an ethylenically unsaturated diacid, the anhydride having formula (II) where Rand Rare individually selected from H, C-Calkyl, phenyl, chlorine and bromine; (B) 15 to 60 wt % of a second ethylenically unsaturated monoacidic monomer consisting of (meth)acrylic acid; (C) 30 to 70 wt % of a third ethylenically unsaturated monomer consisting of C-Calkyl ester(s) of (meth)acrylic acid; (D) 1 to 25 wt %, of a fourth ethylenically unsaturated monomer, consisting of surfmer of formula (III): wherein each Rand Rare each independently selected from H, Calkyl, —C(═O)OH, or —C(═O)OR; Ris a C-Calkyl; T is —CHC(═O)O—, —C(═O)O—, —O—, —CHO—, —NHC(═O)NH—, —C(═O)NH—, —Ar—(CE)-NHC(═O)O—, —Ar—(CE)-NHC(═O)NH—, or —CHCHNHC(═O)—Ar is divalent aryl; E is H or methyl; z is 0 or 1; k is an integer in the range of 0 to 30; and q is 0 or 1; with the proviso that when k is 0, q is 0, and when k is in the range of 1 to 30; q is 1; (RO)is polyoxyalkylene, which is a homopolymer, a random copolymer, or a block copolymer of C-C-oxyalkylene units, wherein Ris CH, CH, CH, or a mixture thereof, and m is an integer in the range of 5 to 250; Y is —RO—, —RH—, —C(═O)—, —C(═O)NH—, ═RNHC(═O)NH—, or —C(═O)NHC(═O)—; and R7 is substituted or unsubstituted alkyl selected from the group consisting of C-Clinear alkyl, C-Cbranched alkyl, C-Ccarbocyclic alkyl, C-Calkyl-substituted, phenyl, aryl-substituted C-Calkyl, and C-Ccomplex ester; wherein the Ralkyl group optionally comprises one or more substituents selected from the group consisting of hydroxy, alkoxy, and halogen and (E) 0 to 5 wt %, of a cross linking agent, for introducing branching and controlling molecular weight, the cross linking monomer comprising polyfunctional units carrying multiple reactive functionalisation groups selected from the group consisting of vinyl, allyl and functional mixtures thereof, and (iii) from 0.01 to 5% wt of the composition ethoxylated polyamine; wherein (C) comprises from 40 to 100% C4-C8 acrylate and from 0 to 60% ethyl acrylate.