Azo dyes from 2-amino-5-alkylthio-1,3,4-thiadiazoles and N-acylo

Details Azo dyes from 2-amino-5-alkylthio-1,3,4-thiadiazoles and N-acylo Azo dyes from 2-amino-5-alkylthio-1,3,4-thiadiazoles and N-acylo

1983-07-11

1984-06-26

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

548141, C09B 29039, C09B 2909, D06P 118, D06P 354

Patent

active

044565518

ABSTRACT:
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: ##STR1## wherein R is alkyl; X is hydrogen, or alkyl; R.sub.1 is hydrogen, alkyl, aralkyl or ##STR2## R.sub.2 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 R.sub.2 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.

REFERENCES:
patent: 3657187 (1972-04-01), Weaver et al.
patent: 3770370 (1973-11-01), Weaver et al.
patent: 3775049 (1973-11-01), Wolfrum et al.

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