PARTIALLY ESTERIFIED COPOLYMERS OF MONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACID ANHYDRIDES, VINYLAROMATIC COMPOUNDS AND OTHER MONOETHYLENICALLY UNSATURATED MONOMERS CONTAINING HETEROATOMS

摘要

Copolymers obtainable by free-radical polymerization of (A) at least one monoethylenically unsaturated C4-C8-dicarboxylic anhydride, (B) at least one vinylaromatic compound from the group consisting of styrene and substituted styrenes and (C) at least one monoethylenically unsaturated monomer which contains at least one heteroatom and is different from (A), and partial esterification of the resulting copolymers with (D) alcohol alkoxylates of the formula I (see formula I) in which the variables have the following meanings: R is C2-C6-alkylene radicals, which, when n is > 1, may be identical or different; R1 is C1-C30-alkyl; n is 1 to 200, and if desired hydrolysis of the anhydride groups still present in the copolymers to give carboxyl groups, and use of the copolymers as additive for detergents and cleaners.