Monoazo reactive dyestuffs

US4036825A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hermann Fuchs
• Fritz Meininger

Key dates

• Filing date: Oct 7, 1976
• Grant date: Jul 19, 1977
• Expiry date: Oct 7, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/51
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Fiber-reactive monoazo dyestuffs which, in form of free acids, correspond to the general formula ##STR1## in which Z represents one of the groupings EQU --CH.sub.2 --CH.sub.2 --OSO.sub.3 H or EQU --CH=CH.sub.2 a stands for benzene, naphthalene or pyrazole unsubstituted or substituted by alkyl, alkoxy or by a phenyl group which is unsubstituted or may be substituted by alkyl, alkoxy, hydroxy, cyano, nitro, sulfonic acid, sulfonic acid amide, carboxylic acid amide, chlorine, bromine, carboxylic acid, acetylamino, benzoylamino, trifluoromethyl, carbalkoxy, B-sulfatoethylsulfonyl or vinylsulfonyl, and wherein, if A represents a benzene or naphthalene radical the azo group and the amino group of the formula --NR.sub.1 R.sub.2 standing in ortho or para position to each other, and if A is pyrazole, the group --NR.sub.1 R.sub.2 is standing in 5-position and the azo group in 4-position of the pyrazole, R.sub.1 and R.sub.2 are different or the same and each stand for hydrogen or alkyl which may be substituted by chlorine, hydroxy, cyano, alkanoyloxy, benzoyloxy, nitrobenzoyloxy, chlorobenzoyloxy, phenyl or phenyl substituted by alkyl, alkoxy, alkyl-sulfone, sulfonic acid, sulfonic acid amide…