Detergent compositions with copolymers of 1,2-dialkoxyethylenes and monoethylenically unsaturated dicarboxylic anhydrides

US4980088A · kind A · utility

Assignee

• BASF SE

Inventors

• Dieter Boeckh · Schifferstadt, DE
• Hans-Peter Seelmann-Eggebert · Schifferstadt, DE
• Heinrich Hartmann · Schifferstadt, DE
• Dieter Koeffer · Weinheim, DE
• Wolfgang Trieselt · Ludwigshafen, DE
• Alexander Kud · Eppelsheim, DE
• Richard Baur · Mutterstadt, DE

Key dates

• Filing date: Dec 7, 1989
• Grant date: Dec 25, 1990
• Expiry date: Dec 7, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F222/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Pulverulent and liquid detergents contain (1) one or more anionic surfactants, one or more nonionic surfactants or mixtures thereof and (2) copolymers in amounts of from 0.1 to 15% by weight preparable by copolymerization of PA1 (a) from 10 to 55 mol % of a 1,2-di-C.sub.1 -C.sub.4 -alkoxyethylene, PA1 (b) from 10 to 60 mol % of a monoethylenically unsaturated dicarboxylic anhydride of from 4 to 8 carbon atoms, PA1 (c) from 0 to 60 mol % of a monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid and PA1 (d) from 0 to 20 mol % of another monoethylenically unsaturated monomer and subsequent hydrolysis of the anhydride groups of the copolymerized monomer (b) or reaction of these groups with an alcohol or an amine. Preferred copolymers contain 1,2 dimethoxyethylene as the (a) monomer, maleic acid as the (b) monomer, and acrylic acid as the (c) monomer.