COPOLYMERS CONTAINING CARBONIC ACID GROUPS, SULFONIC ACID GROUPS AND POLYALKYLENEOXIDE GROUPS AS ADDITIVE FOR INHIBITING PLAQUE FORMATION IN DETERGENTS

摘要

The invention relates to copolymers which comprise, in copolymerized form, a1) 30 to 90% by weight of at least one monoethylenically unsaturated C3-C8-carboxylic acid or of an anhydride or water-soluble salt thereof, a2) 3 to 60% by weight of at least one monomer comprising sulpho groups, a3) 3 to 60% by weight of at least one nonionic monomer of the formula (I) H2C=C(R1)COO-[R2-O]0 -R3 (I), in which R1 is hydrogen or methyl, R2 are identical or different, linear or branched C2-C6-alkylene radicals which may be arranged in blocks or randomly, and R3 is hydrogen or a straight-chain or branched C1-C4-alkyl radical and o is a natural number from 3 to 50, a4) 0 to 30% by weight of one or more further ethylenically unsaturated monomers which are polymerizable with a1), a2) and a3), where the sum of a1), a2), a3) and a4) adds up to 100% by weight.