POLYMERS OF ORGANIC ACIDS, PROCESS FOR THEIR PREPARATION AND THEIR USE IN WASHING AND CLEANING COMPOSITIONS

摘要

1. A process for the preparation of polymeric organic acids by copolymerizing monoolefinically unsaturated monofunctional acids and monoolefinically unsaturated monomers, copolymerizable therewith and devoid of acid groups, with or without monoolefinically unsaturated dicarboxylic acids and/or anhydrides which are copolymerizable with the preceding monomers, in the presence of a free radical initiator at elevated temperatures and superatmospheric pressures, wherein the copolymerization is carried out as a continuous mass polymerization using, based on the sum of the monomers, a) from 50 to 95% by weight of one or more of the unsaturated monofunctional acids of 3 to 10 carbon atoms, b) from 0.5 to 5% by weight of one or more of the monomers copolymerizable with a) and devoid of acid groups, and c) from 0 to 49% by weight of one or more of the unsaturated dicarboxylic acids or their anhydrides of 4 to 6 carbon atoms, with the proviso that the percentages of a, b and c add up to 100, in the presence of 0.1 to 5% by weight, based on the sum of a, b and c, of the free radical initiator, at from 200 to 400 degrees C, and the copolymers obtained may, if desired, be completely or partially neutralized.