Vinyl formate copolymers, preparation thereof, and use thereof in detergents and cleaners

US5739241A · kind A · utility

Assignee

• BASF SE

Inventors

• Dieter Boeckh · Schifferstadt, DE
• Axel Kistenmacher · Ludwigshafen, DE
• Walter Denzinger · Speyer, DE
• Thomas Ruhl · Bischofswerda, DE
• Angelika Funhoff · Schriesheim, DE
• Richard Baur · Mutterstadt, DE
• Alexander Kud · Eppelsheim, DE
• Volker Schwendemann · Neustadt, DE

Key dates

• Filing date: Dec 16, 1996
• Grant date: Apr 14, 1998
• Expiry date: Dec 16, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Copolymers containing (a) from 5 to 90 mol % of vinyl formate units, (b) from 10 to 95 mol % of units of monoethylenically unsaturated carboxylic acids, (c) from 0 to 70 mol % of units of monoethylenically unsaturated dicarboxylic acids, and (d) from 0 to 30 mol % of units of other monoethylenically unsaturated monomers in copolymerized form and having K values of at least 8 (determined by the method of H. Fikentscher in 1% strength by weight aqueous solution on the sodium salt of the copolymers at pH 7 and 25.degree. C.), processes for their preparation by copolymerizing monomer mixtures of (a) from 5 to 90 mol % of vinyl formate, (b) from 10 to 95 mol % of monoethylenically unsaturated carboxylic acids, (c) from 0 to 70 mol % of monoethylenically unsaturated dicarboxylic acids, and (d) from 0 to 30 mol % of other monoethylenically unsaturated monomers in an aqueous medium or in an organic solvent in the presence of free-radical polymerization initiators and use of the vinyl formate copolymers and of the vinyl alcohol copolymers obtainable therefrom by hydrolysis and/or oxidation as detergent and cleaner additives.