Water-soluble polycoesters, process for their preparation, and their use

US4736014A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Friedrich Engelhardt · Frankfurt, DE
• Karl Hintermeier · Frankfurt am Main, DE
• Rolf Kleber · Neu-Isenburg, DE
• Peter Klein · Burns Lake, CA

Key dates

• Filing date: Jan 13, 1987
• Grant date: Apr 5, 1988
• Expiry date: Jan 13, 2007

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2200/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycoester of the formula I EQU E--CO--R--CO--O--R.sup.1 --O--CO--R--CO).sub.n E.sup.1 (I) in which PA1 R is 60 to 85 mol % 1,3-phenylene radicals, 5 to 20 mol % tetramethylene radicals and 10 to 20 mol % for example radicals of the formula IIa ##STR1## R.sup.1 is 60 to 95 mol % ethylene radicals (--CH.sub.2 CH.sub.2 --), 0 to 28 mol % 2,2-dimethyl-1,3-propylene radicals and 5 to 12 mol % polyoxyethylene radicals having an average molecular weight up to 600 and PA1 R.sup.2 denotes for example SO.sub.3 H and PA1 E, E.sup.1 denote for example --OH and PA1 n is a sufficiently large number that the polycoester has an average molecular weight between 15,000 and 40,000, are used in the form of their aqueous solutions as sizing agents.