Process for the dyeing and printing of synthetic polyamides

US4046501A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Joachim W. Otten, deceased · Offenbach am Main, DE
• Helmut Troster · Königstein, DE

Key dates

• Filing date: Sep 30, 1975
• Grant date: Sep 6, 1977
• Expiry date: Sep 30, 1995

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/924
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

It has been found that dyestuffs of the formula ##STR1## in which p stands for an integer of from 1 to 6, and W represents, as a water-solubilizing group, the sulfo group, the sulfato group (--OSO.sub.3 H), the thiosulfato group (--S--SO.sub.3 H), the carboxyl group, the phosphato group (--OPO.sub.3 H.sub.2), the phosphonic acid group (--PO(OH).sub.2) or the phosphonic acid-semi-ester group of the formula --PO(OR)OH, wherein R represents an alkyl radical of from 1 to 5 carbon atoms, preferably the methyl or ethyl radical, are very suitable in dyeing and printing processes of synthetic polyamide fiber materials and yield brilliant and very fast dyeings and prints on these materials, especially even dyeings of textured polyamide fibers which have differences in stretching.