Perinone dyestuffs

US4007180A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventor

• Helmut Troster · Königstein, DE

Key dates

• Filing date: Mar 27, 1975
• Grant date: Feb 8, 1977
• Expiry date: Mar 27, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B57/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuffs consisting of the mixture of isomers of the formulae ##STR1## wherein R.sub.1 is hydrogen, alkyl with 1 to 20 carbon atoms, alkoxyalkyl or alkoxycarbonyl each with up to 4 carbon atoms, benzyl, alkoxycarbonyl with up to 20 carbon atoms or phenyl, R.sub.2 is alkoxycarbonyl with up to 20 carbon atoms, cyano, alcanoyl, alkoxyalkoxycarbonyl each with up to 4 carbon atoms, carbonamido, phenylcarbonamido, mono- or dialkylcarbonamido with up to 8 carbon atoms or cyclohexylcarbonamido, R.sub.3 and R.sub.4 are identical and are hydrogen or alkoxy with 1 to 4 carbon atom atoms or R.sub.3 is alkoxy with 1 to 4 carbon atoms and R.sub.4 is hydrogen and R is phenylthio which may be substituted by one or two chlorine or bromine atoms, alkyl, alkoxy, carbalkoxy, alkylsulfonyl groups and with up to 4 carbon atoms or a cyano, trifluoromethyl or nitro group; naphthylthio, pyridinethio, benzimidazolyl-2-thio, benzoxazolyl-2-thio, benzthiazolyl-2-thio or an amino group of the formula ##STR2## wherein R.sub.5 and R.sub.6 are hydrogen, alkyl or hydroxyalkyl with 1 to 4 carbon atoms or phenyl, or together are piperidine, morpholine or piperazine. The new dyestuffs are very suitable for the dyein…