Copolymers of allyliminodiacetic acid with unsaturated carboxylic acids and their use as complexing agents, peroxide stabilizers, builders in washing and cleaning products and dispersing agents

US5548049A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Helmut Brehm · Krefeld, DE
• Kurt Dahmen · Rheydt, DE
• Richard Mertens · Krefeld, DE

Key dates

• Filing date: Dec 29, 1994
• Grant date: Aug 20, 1996
• Expiry date: Dec 29, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3773
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymers consisting of (a) 1-50% weight of N-allyliminodiacetic acid and its salts; (b) 50-99% weight of one or several unsaturated, polymerisable carboxylic acids having the formula (I), in which R.sup.1 stands for hydrogen, C.sub.1-C.sub.4 alkyl or COOM, R.sup.2 stands for hydrogen or C.sub.1-C.sub.4 alkyl, R.sup.3 stands for hydrogen, C.sub.1-C.sub.4 alkyl or CH.sub.2 COOM and M stands for hydrogen, ammonium, an alkali metal or an alkaline earth metal; and (c) 0-40% by weight water soluble monomers copolymerisable with (a) and (b). These polymers preferably contain acrylic acid, methacrylic acid and maleic acid as unsaturated polymerisable carboxylic acids. Also disclosed are the use of these polymers as complexing agents, as peroxide stabilizers and builders in washing products, as dispersing agents and hardness stabilizers.