Water-insoluble azo colorants

Details Water-insoluble azo colorants Water-insoluble azo colorants

C - Chemistry, Metallurgy

09

B

C09B 35/035 (2006.01) C09B 33/153 (2006.01) C09B 67/10 (2006.01) C09D 11/02 (2006.01) C09D 17/00 (2006.01) D06P 1/04 (2006.01) D21H 17/09 (2006.01) D21H 21/28 (2006.01)

Patent

CA 2101681

Abstract of the disclosure: Water-insoluble azo colorants Novel disazo compounds of the formula (I) Image (I) in which R1 and R2 are identical or different and are a hydrogen or halogen atom or a C1-C4-alkyl, C1-C4-alkoxy, C1-C5-alkoxycarbonyl, nitro, cyano or trifluoromethyl group and the rings A, B, C and D independently of one another are unsubstituted or contain one or more substituents from the group comprising C1-C4-alkyl, C1-C4-alkoxy, carboxyl, C1-C5-carbalkoxy, C2-C5-alkanoyl, benzoyl, acyloxy, acyl- amino, unsubstituted or N-mono- or N,N-disubstituted carbamoyl or unsubstituted or N-mono- or N,N-disubstitut- ed sulfamoyl, possible substituents being C1-C4-alkyl or mono- to trisubstituted phenyl; C1-C4-alkylamino or phenylamino; C1-C4-alkylsulfonyl or phenylsulfonyl; phenylsulfonylamino; cyano; halogen, nitro and trifluoromethyl, are suitable for coloring naturally occurring and synthetic materials, for formulating enamels, emulsion paints and printing inks, for spin coloring artificial silk and for coloring paper.

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