| 摘要 |
Azo compounds of the formula: <IMAGE> wherein D is a radical of the formula: <IMAGE> where Y1 is acylamino, hydrogen, chlorine, bromine, nitro, cyano, carboxylic acid or ester, trifluoromethyl, alkoxy, methylsulfonyl, and substituted or substituted carbamyl or sulfamyl, phenylcarbonyl, naphthylcarbonyl, pyridylcarbonyl, oxodiazolyl, quinazolonyl phthalazinonyl, phenylazo, naphthylazo, or pyridylazo, Y2 is hydrogen, chlorine or bromine, Y4 is hydrogen or chlorine, and wherein D is free from complex forming hydroxy or carboxy; R is hydrogen, phenyl, naphthyl or pyridyl and X is alkyl or a carboxylic acid alkyl ester, or is phenyl, naphthyl or pyridyl, or acylamino, can be used as pigments for coloring surface coatings, printing inks or plastics.
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