Process for dyeing synthetic fiber materials

US3951591A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: Oct 23, 1973
• Grant date: Apr 20, 1976
• Expiry date: Oct 23, 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 synthetic fibrous materials from organic solvents, which comprises impregnating the said fibrous materials with organic dyebaths containing at least one dyestuff of the formula (1) ##SPC1## In which R represents a secondary or tertiary amino group of the formula (2) ##EQU1## in which R.sub.4, R.sub.5 each represents, straight chain or branched alkyl, hydroxyalkyl, lower alkyl --COO-- lower alkylene, and R.sub.4 additionally represents hydrogen lower alkyl --o-- lower alkylene, or R.sub.4 and R.sub.5 represent together with the nitrogen atom the heterocyclic ring ##EQU2## R.sub.1 and R.sub.1 ' each represents hydrogen, chlorine, bromine, lower alkyl, lower alkoxy, nitro or --SO.sub.2 -- lower alkyl, R.sub.2 and R.sub.3 each represents hydrogen, lower alkyl, cyano-lower alkylene, hydroxy- lower alkylene, lower alkylene ##EQU3## lower alkyl, lower alkylene LOWER ALKYL, ##EQU4## lower alkylene-phenyl or phenyl, X represents hydrogen, chlorine, bromine, lower alkyl or lower alkoxy, Y represents hydrogen, chlorine, bromine, lower alkyl, lower alkoxy or acylamino, and subsequently fixing the applied dyestuffs by a heat treatment.