Process for dyeing synthetic polyamide fibre materials

US4121898A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Helmut Kirschnek · Leverkusen, DE
• Karlhans Jakobs · Bensberg, DE

Key dates

• Filing date: Jul 25, 1977
• Grant date: Oct 24, 1978
• Expiry date: Jul 25, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/924
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In a process for dyeing synthetic polyamide fibre materials with metal-free acid dyestuffs a dye liquor is used which contains compounds of the formula ##STR1## wherein R.sub.1 represents an alkyl and/or alkenyl radical with 12-22 carbon atoms, PA1 R.sub.2 represents hydrogen and/or methyl, PA1 m represents 0 or 1, PA1 n represents 2 or 3 and PA1 The sum of x + y + z represents a number from 10-30, and compounds of the formula EQU R.sub.3 -- B -- X wherein PA1 R.sub.3 represents an alkyl radical with 12-22 carbon atoms and/or a phenyl or/and naphthyl radical which contains a total of 12-22 carbon atoms and is substituted by one or more alkyl radicals, PA1 B represents --O--SO.sub.2 -- and/or --SO.sub.3 and PA1 X represents hydrogen or an ammonium, alkali metal, alkaline earth metal, mono-, di- or tri-alkyl-ammonium or hydroxyalkylammonium ion with, in each case, 1-4 carbon atoms in the alkyl radical, or represents a cyclohexyl-ammonium ion.