Copolymers, their preparation and their use as assistants in detergents and cleansing agents

US4559159A · kind A · utility

Assignee

• BASF SE

Inventors

• Walter Denzinger · Speyer, DE
• Heinrich Hartmann · Schifferstadt, DE
• Wolfgang Trieselt · Ludwigshafen, DE
• Richard W. Mueller · Bad Dürkheim, DE
• Paul Diessel · Mutterstadt, DE
• Albert Hettche · Heßheim, DE

Key dates

• Filing date: Feb 16, 1984
• Grant date: Dec 17, 1985
• Expiry date: Feb 16, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3773
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Water-soluble copolymers which consist of from 40 to 90% by weight of one or more ethylenically unsaturated monocarboxylic acids of 3 to 5 carbon atoms, from 60 to 10% by weight of one or more ethylenically unsaturated dicarboxylic acids of 4 to 8 carbon atoms and/or of the corresponding dicarboxylic acid anhydride and, if required, not more than 15% by weight, based on the total weight of the carboxyl-containing monomers, of one or more carboxyl-free monomers, and which are esterified with from 2 to 60% by weight, based on the total weight of the carboxyl-containing monomers, of one or more compounds which contain a terminal hydroxyl group and one or more alkylene oxide groups of 2 to 4 carbon atoms, the preparation of such water-soluble copolymers and their use as assistants in detergents, cleansing and dishwashing agents.