Azo dyestuffs

Details Azo dyestuffs Azo dyestuffs

C - Chemistry, Metallurgy

09

B

260/172.1, 260/1

C09B 29/06 (2006.01) C09B 29/00 (2006.01) D06P 1/04 (2006.01)

Patent

CA 1066272

Abstract of the Disclosure Disclosed are disperse dyes of formula I, Image I in which R1 is an unsubstituted or substituted C1-4alkyl, phenyl or aminocarbonyl radical or an unsubstituted C1-4- alkoxy or alkoxy-(C1-4)-carbonyl radical, R2 is an unsubstituted alkoxy-(C1-4)- carbonyl radical or cyano, with the proviso that it is cyano only when at least one of R1 and R3 is other than methyl, R3 is hydrogen or an optionally substi- tuted C1-4alkyl,cycloalkyl or phenyl radical, and K is the radical of a coupling component selected from the amino- benzene, amino-naphthalene, pyrazo- lone-5, 5-aminopyrazole, pyridone, pyrimidone, tetrahydroquinoline, coumarine or pyrrole series or of the activated methylene group- containing aliphatic series, their production and use.

243335

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