C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
8/1, 260/153
C09B 56/10 (2006.01) C09B 62/503 (2006.01) D06P 1/10 (2006.01)
Patent
CA 1156223
HOECHST AKTIENGESELLSCHAFT Copper formazan compounds, processes for their preparation an their use as dyestuffs ABSTRACT: New copper-complex formazan compounds of the general formula Image in which A is a phenylene or naphthylene radical which can be substituted by halogen, nitro, lower alkyl, lower alkoxy, lower alkylsulfonyl, phenylsulfonyl and option- ally alkylated sulfonamide groups and can also be sub- stituted by the radical Z, defined below, B is a straight- chain or branched-chain alkyl group or alkenyl group, which can be substituted by an optionally substituted phenyl radical, or is a phenyl or naphthyl radical, which can be substituted by halogen, lower alkyl, lower alkoxy and lower carbalkoxy, or is the radical or a furan, thiophene, pyrrole, imidazole, indole, pyrazole, pyri- dine, pyrimidine, quinoline or benzimidazole, it being possible for B likewise to be substituted by the group Z, defined below, Z denotes a group which confers solubility in water, such as the carboxyl group or sulfo group, one to three of which are bonded to A and/or B, Cu is a copper atom, X denotes an oxygen atom or a carbonyloxy group and is bonded to A in the ortho- position relative to the nitrogen atom, Y represents the vinyl or .beta.-thiosulfatoethyl group and M denotes a hydro- gen atom or the equivalent of a metal. The new copper- complex formazan compounds can be prepared in a manner which is in itself customary, for example by reacting an aromatic hydrazone compound of the general formula Image in which A, B, X and Z have the abovementioned meaning, with the diazonium compound of an aromatic amine of the general formula Image in which M and Y have the abovementioned meaning, and with an agent which donates copper. The new copper- complex formazan compounds have valuable dyestuff proper- ties and are particularly suitable as fiber-reactive dye- stuffs for dyeing, for example, cellulose fiber materials, wool and synthetic polyamide fibers, on which they give strong reddish-tinged to greenish-tinged blue or clear blue dyeings with good fastness to light and wet processing.
364251
Hoyer Ernst
Schwaiger Gunther
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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