Process for the manufacture of phthalocyanine azo dyestuffs

Details Process for the manufacture of phthalocyanine azo dyestuffs Process for the manufacture of phthalocyanine azo dyestuffs

C - Chemistry, Metallurgy

09

B

8/25, 260/155.1

C09B 47/04 (2006.01) C09B 29/50 (2006.01) C09B 43/00 (2006.01) C09B 47/26 (2006.01) C09B 56/14 (2006.01) C09B 62/503 (2006.01) D06P 1/14 (2006.01)

Patent

CA 1098516

Abstract of the Disclosure Fiber reactive phthalocyanine azo dyes having at least one group of the formula Image wherein ar denotes a divalent aromatic or araliphatic radical, R3 and R4 denote hydrogen or optionally substituted alkyl radicals, A = the group -NH-, -CO-NH-, -S02-NH- or -S02-, B = the radical of an optionally substituted, mononuclear or dinuclear, aromatic hydrocarbon X = the vinyl group, the .beta.-hydroxyethyl group or an ethyl group which is substituted in the .beta.-position by a group which can be split off by means of alkalis, n = 0 or 1 and p = 0.1 or 2 are prepared by diazotizing phthalocyanine amines having at least one group of the formula S02-? -ar-NH2 wherein the amino group is linked to an aromatic C atom of the radical ar, coupling the diazonium compound with a succinic acid derivative of the formula V Image (V) wherein Z denotes hydrogen or an optionally substituted hydrocarbon radical, treating the hydrazone interme- diate with alkali to obtain a phthalocyanine pyrazolone having at least one group of the formula Image and coupling this product with a diazotized amine of the formula Image wherein the group Image is linked to an aromatic carbon atom of the radical B.

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