| 摘要 |
Disclosed are novel azo dyes from 2-amino-5-alkylthio-1,3,4-thiadiazoles and N-acyloxyalkyl-m-acylamidoanilines. These dyes are useful for dyeing synthetic hydrophobic fibers and particularly polyester. The dyes have the general formula: <IMAGE> wherein R is alkyl; X is hydrogen, or alkyl; R1 is hydrogen, alkyl, aralkyl or <IMAGE> R2 is alkyl, aryl, aralkyl, cycloalkyl, alkylamino, or arylamino; and Ac is formyl or alkanoyl; and wherein R and the alkyl, alkylene, aryl and cycloalkyl moieties of R2 and the alkanoyl moiety of Ac may be substituted with a large variety of groups such as -OH, OOC-alkyl, -COO-alkyl, succinimido, phthalimido, alkoxy, carbamoyl and the like.
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