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

US4247457A · kind A · utility

Assignee

• Sandoz AG · CH

Inventor

• Beat Henzi · Basel, CH

Key dates

• Filing date: Nov 7, 1977
• Grant date: Jan 27, 1981
• Expiry date: Nov 7, 1997

Classification

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

Abstract

Basic dyes, e.g., azo dyes and anthraquinone dyes, free from sulphonic acid groups which contain, 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 and the other is 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 --S--, --O--, ##STR3## where R.sub.8 is C.sub.1-4 alkyl, and A.crclbar. 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.