Process for the dyeing of synthetic fiber materials from organic solvents

US3930793A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Birke · Frankfurt am Main, DE
• Rudolf Schickfluss
• Franz Schon · Frankfurt am Main, DE
• Willi Steckelberg · Hofheim, DE

Key dates

• Filing date: Oct 19, 1973
• Grant date: Jan 6, 1976
• Expiry date: Oct 19, 1993

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/928
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the continuous dyeing of textile material containing or consisting of synthetic fibers from organic solvents, which comprises impregnating the said textile materials with an organic dyebath containing at least one dyestuff of the formula EQU R.sub.2 O -- A.sub.1 -- N = N -- Y -- N -- A.sub.2 -- OR.sub.1 in which A.sub.1 and A.sub.2 each represent, independently of each other, phenylene, lower alkyl-phenylene, lower alkoxy-phenylene, chlorophenylene, bromophenylene or naphthylene, Y represents phenylene, lower alkyl-phenylene, lower alkoxy-phenylene, di(lower alkyl)-phenylene, di(lower alkoxy)-phenylene, lower alkyl-lower alkoxy-phenylene, chlorophenylene, bromophenylene, biphenylene, di(lower alkyl)-biphenylene, di(lower alkoxy)-bi-phenylene, di(chloro)-biphenylene or di(bromo)-biphenylene, R.sub.1 represents a straight chain or branched alkylcarbonyl of at most 18 carbon atoms, benzoyl, lower alkyl-benzoyl, chlorobenzoyl or bromobenzoyl, and R.sub.2 represents a straight chain or branched alkylcarbonyl of at most 18 carbon atoms, benzoyl, lower alkyl-benzoyl, chlorobenzoyl, bromobenzoyl or lower alkyl ##EQU1## (of 2 to 4 carbon atoms, and an organic solvent and subse…