C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/153, 8/21
C09B 50/00 (2006.01) C09B 62/503 (2006.01) D06P 1/10 (2006.01)
Patent
CA 1249264
Abstract of the disclosure: Copper formazan compounds, process for their preparation and their use as dyes Water-soluble copper formazan compounds of the general formula Image ( 1 ) in which: Y is vinyl or ethyl which is substituted by hydroxy or a substituent eliminatable under alkaline condi- tions; the benzene nucleus A can be substituted by further substituents; M is hydrogen or a metal; B is phenylene or naphthylene each of which can be substituted by further substituents or is an optio- nally substituted furan, thiophene, pyrrole, imidazole, pyrazole, pyridine, pyrimidine, quinoline or benz- imidazole radical or an optionally phenyl-substituted alkylene or alkenylene; Z1 is hydrogen or a water-solubilizing group, or -B-Z1 together denote hydrogen, carboxy , cyano or nitro; D is an optionally substituted benzene or naphthalene radical; R is hydrogen or a group of the formula Image in which R* is hydrogen or lower alkyl which can be substituted by hydroxy , sulfato, sulfo or carboxy , n denotes the number zero or 1 and Y2 possesses one of the denotations of Y. These copper formazan compounds can be synthesized ana- logously to known procedures for preparing copper formazan compounds; they possess fiber-reactive dye properties and dye in particular cellulose fiber materials in deep reddish blue to greenish blue fast shades.
494478
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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