Leather dyes, their manufacture and use

Details Leather dyes, their manufacture and use Leather dyes, their manufacture and use

C - Chemistry, Metallurgy

09

B

260/161.3, 260/1

C09B 45/20 (2006.01) C09B 45/00 (2006.01) C09B 45/30 (2006.01) D06P 3/32 (2006.01)

Patent

CA 1058167

NEW LEATHER DYES, THEIR MANUFACTURE AND USE Abstract of the Disclosure 1:2 cobalt complex dyes of azo compounds of the formula Image (1) wherein D is a phenyl or naphthyl radical which is substituted by sulphonic acid groups, halogen atoms, alkyl, alkoxy, nitro, cyano, acylamino or arylazo groups or is unsubstituted, and R is a hydrogen atom, a sulpho group, a halogen atom or a methyl group, and wherein the total number of sulpho groups present is 1 to 3.

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