Levelling agent and process for the even dyeing of materials made of synthetic fibers

US4250296A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Gerhard Weckler
• Hans J. Hauss · Frankfurt am Main, DE
• Karl Hintermeier · Frankfurt am Main, DE
• Friedrich Engelhardt · Frankfurt, DE

Key dates

• Filing date: Aug 15, 1978
• Grant date: Feb 10, 1981
• Expiry date: Aug 15, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P1/613
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed is a polycondensate of (a) water soluble or dispersible polyester having a molecular weight of 600-5000 prepared by reacting a carboxylic acid and a diol or polyol wherein 5-40 moles percent of the acid or hydroxy compounds contain sulfo substituents and (b) a compound of the formula EQU R--O--(CH.sub.2 CH.sub.2 O).sub.m --CH.sub.2 CH.sub.2 OH wherein m is a number from 5 to 50 and R is selected from the group consisting of alkyl of 6-22 carbon atoms, alkenyl of 6-22 carbon atoms, alkanoyl of 6-22 carbon atoms, aryl of 6-22 carbon atoms, aralkyl of 6-22 carbon atoms, castor oil radical and ##STR1## wherein R' is alkyl or alkenyl each having 6-22 carbon atoms. The polycondensate is useful as a modifier for aminoplast resins and as a leveller in dyeing.