Azo dyestuffs, their preparation and their use

专利名称：Azo dyestuffs, their preparation and their

use

发明人：WALTER, HARALD, DR.申请号：EP90810940.8申请日：19901203公开号：EP0434611A2公开日：19910626

摘要：Azo dyes of the formula where R1 and R2 are independently of one anothersubstituted or unsubstituted C1-C8-alkyl, C1-C8-alkoxy, phenyl, naphthyl, phenoxy,naphthoxy or -N(R6)R7, where R6 and R7 are independently of one another hydrogen,substituted or unsubstituted C1-C8-alkyl, phenyl or naphthyl, R3 is hydrogen, C2-C4-alkanoylamino or substituted or unsubstituted C1-C8-alkyl or C1-C8-alkoxy, R4 issubstituted or unsubstituted C1-C8-alkyl or benzyl, R5 is hydrogen or substituted orunsubstituted C1-C8-alkyl, X is -O- or -CHR8-, R8 is substituted or unsubstituted C1-C8-alkyl, and the dye of the formula (1) contains at least one sulpho, sulphato or

thiosulphato group, dye nitrogen- containing or hydroxyl-containing fibre materials inshades having good fastness properties.

申请人：CIBA-GEIGY AG

地址：KLYBECKSTRASSE 141; CH-4002 BASEL,Klybeckstrasse 141 CH-4002 Basel CH

国籍：CH

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