Cationic dyes containing an aryloxy group linked through a bridging radical to a quaternized nitrogen atom

US4072672A · kind A · utility

Assignee

• Sandoz AG · CH

Inventor

• Beat Henzi · Basel, CH

Key dates

• Filing date: Nov 28, 1975
• Grant date: Feb 7, 1978
• Expiry date: Nov 28, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B69/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are basic dyes, e.g., azo dyes and anthraquinone dyes free from sulphonic acid groups and which contain, as characteristic group, a group of the formula ##STR1## in which R and R.sub.1, independently, are substituted or unsubstituted C.sub.1-4 alkyl or are linked to form a ring, or PA1 One of R and R.sub.1 is --NH.sub.2 or C.sub.1-4 alkoxy, the other substituted or unsubstituted alkyl, PA1 R.sub.2 and R.sub.3, independently, are hydrogen or C.sub.1-4 alkyl, PA1 Y is a bridging group, PA1 Q is unsubstituted or substituted phenyl, biphenylyl, naphthyl or ##STR2## in which R.sub.7 is ##STR3## where R.sub.8 ic C.sub.1-4 alkyl, and PA1 A.sup.- is an anion. These dyes are useful for the dyeing and printing of polymers and copolymers of acrylonitrile and asymmetrical dicyanoethylene as well as polyesters and polyamides modified to contain acid groups. The dyes build-up well and exhibit good pH stability and stability to boiling. The obtained dyeings are level and possess good fastness to light, wet treatments, solvents, heat treatments and cross-dyeing.