Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids and their use

US5656646A · kind A · utility

Assignee

• BASF SE

Inventors

• Johannes Perner · Neustadt, DE
• Paul Diessel · Mutterstadt, DE
• Helmut Guembel · Dannenfels, DE
• Walter Denzinger · Speyer, DE
• Heinrich Hartmann · Schifferstadt, DE
• Matthias Kroner · Eisenberg, DE

Key dates

• Filing date: May 22, 1995
• Grant date: Aug 12, 1997
• Expiry date: May 22, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L77/04
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Mixtures of PA0 (I) PA0 polymers of monoethylenically unsaturated dicarboxylic acids having a molecular weight of from 200 to 5,000 and PA0 (II) (1) copolymers having a molecular weight of from 10,000 to 150,000 and comprising PA1 (a) from 10 to 70% by weight of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids or the salts thereof and PA1 (b) from 30 to 90% by weight of monoethylenically unsaturated C.sub.3 -C.sub.10 -monocarboxylic acids and/or the salts thereof, (2) graft polymers having a molecular weight of from 5,000 to 150,000, which are obtainable by free radical graft polymerization of PA1 (A) monoethylenically unsaturated C.sub.3 -C.sub.10 -carboxylic acids or the anhydrides and/or the salts thereof in the presence of PA1 (B) mono-, oligo- or polysaccharides and the derivatives thereof in a weight ratio (A) : (B) of (95 to 20) : (5 to 80), and/or (3) polyaminocarboxylic acids and/or polymers containing aminocarboxylic acid groups contain the components (I) and (II) in a weight ratio of from 10 : 0.5 to 0.5 : 10 and are used as additives for phosphate-free or low-phosphate textile detergents or as dispersants or coating inhibitors in cleaners for hard surf…