US 5,760,150 AGranted

Copolymerizates of unsaturated carboxylic acids, process for the preparation thereof and use thereof

AssigneesTh. Goldschmidt AG, CHT R. Beitlich GmbH

InventorHerbert Bachus

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Abstract

The present invention relates to copolymerizates (A) of unsaturated carboxylic acids, selected from carboxylic acids containing sulfonic acid groups, comonomer mixtures of carboxylic acids containing sulfonic acid groups with dicarboxylic acids, and comonomer mixtures of carboxylic acids containing sulfonic acid groups and/or dicarboxylic acids and their anhydrides, with other unsaturated compounds, in particular monoethylenically unsaturated monocarboxylic acids containing from 3 to 10 carbon atoms. Another embodiment of the invention comprises a process for the preparation of said copolymerizates (A), a mixture of copolymerizates (A) with analogous copolymerizates (B), as well as the use of the above copolymerizates and their mixtures as sequestering agents, complexing agents and co-builders in detergent and cleaning agent industry and as textile treatment aids.

Claims34

Dependent claims

A copolymerproduced by free-radical initiated copolymerization of monomers comprising

(a) enolate-forming monomers selected from the group consisting of enolate-forming monosaccharides and enolate-forming disaccharides;
and
(b) unsaturated carboxylic acid monomers selected from the group consisting of
(i) carboxylic acids containing sulfonic acid groups;
(ii) a mixture of carboxylic acids containing sulfonic acid groups and dicarboxylic acids;
(iii) a mixture of carboxylic acids containing sulfonic acid groups with monoethylenically unsaturated monocarboxylic acids containing from 3 to 10 carbon atoms;
(iv) a mixture of dicarboxylic acids and their anhydrides with monoethylenically unsaturated monocarboxylic acids containing from 3 to 10 carbon atoms;
and
(v) a mixture of carboxylic acids containing sulfonic acid groups and dicarboxylic acids and their anhydrides with monoethylenically unsaturated monocarboxylic acids containing from 3 to 10 carbon atoms.

6 more elements

Dependencies are inferred from the claim text.