Benzoxanthene and benzothioxanthene dicarboxylic acid imide dyestuffs and process for their manufacture

US3947450A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Otto Fuchs · Frankfurt am Main, DE
• Helmut Troster · Königstein, DE

Key dates

• Filing date: Jun 18, 1974
• Grant date: Mar 30, 1976
• Expiry date: Jun 18, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B57/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Benzoxanthene- and benzothioxanthene-dicarboxylic acid imide dyestuffs of the general formula ##SPC1## Wherein PA1 X is oxygen or sulfur, PA1 R is amino which is substituted by one or two members of the group of alkyl, cyclohexyl, benzyl, acyl, phenyl, .beta.-cyanoethyl, .beta.-hydroxyethyl, sulfamidophenyl, benzoyl, dichlorobenzoyl, sulfamidobenzoyl, carboxamidophenyl, phenylsulfonyl sulfamidodichlorobenzoyl, chlorophenyl, phenoxyacetyl lower alkylsulfamidobenzoyl and benzimidazdyl, PA1 R.sub.1 and R.sub.2 are hydrogen chlorine, bromine, cyano, lower carbalkoxy, lower alkyl, lower alkoxy and phenyl, PA1 R.sub.3 and R.sub.4 are hydrogen, lower alkoxy and lower hydroxy alkoxy.