Polyester which is soluble or dispersible in water, a process for its preparation and its use as a levelling auxiliary, levelling auxiliaries and processes for uniform dyeing

US4314052A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Friedrich Engelhardt · Frankfurt, DE
• Karl Hintermeier · Frankfurt am Main, DE
• Joachim Ribka · Offenbach am Main, DE
• Walter Dursch · Königstein, DE
• Walter Rupp

Key dates

• Filing date: Jan 7, 1980
• Grant date: Feb 2, 1982
• Expiry date: Jan 7, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P1/5271
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Improved polyesters soluble or dispersible in water having an apparent average molecular weight of 800 to 5,000 and containing phosphonic ester moieties are useful as levelling auxiliaries for uniform dyeing and are produced by esterifying dibasic acids and dihydric alcohols, either or both of which contain phosphonic acid moieties, phosphonic acid ester moieties or both.