Polymers containing hydroxylic and carboxylic groups

US3956380A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus Henning · Usingen, DE
• Karl Merkenich
• Joachim Kandler · Lechenich, DE

Key dates

• Filing date: Mar 12, 1973
• Grant date: May 11, 1976
• Expiry date: Mar 12, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/50
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides builders for detergent and cleaning compositions. The builders comprise oligomers and/or polymers containing carboxylic and hydroxylic groups -- the latter groups being partially lactonized, if desired -- and a predominant proportion of C--C bonds in their principal chain. The oligomers and/or polymers are produced by hydrolyzing halogenated copolymers which have substantially between 5 and 60 weight % of halogen therein and a principal chain based on structural units, in any desirable sequential arrangement, of the following general formulae I and II or I and III ##EQU1## in which X, Y and Z stand for a hydrogen and/or halogen atom with the proviso that at least one of the X, Y and Z substituents stands for a halogen atom, R stands for a carboxy-halide radical, a carboxylic group, ester group, nitrile group or anhydride group, and the mole fraction m stands for a number greater than zero and smaller than 1.