Dis-azo pigments deriving from bis-diazotized diamino-2-phenyl-b

Details Dis-azo pigments deriving from bis-diazotized diamino-2-phenyl-b Dis-azo pigments deriving from bis-diazotized diamino-2-phenyl-b

1975-10-29

1977-05-17

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260158, 260160, 260304R, 260307D, 2603092, C09B 3534

Patent

active

040241254

ABSTRACT:
Pigments of the general formula ##STR1## wherein x is sulfur, oxygen or --NR--, R is hydrogen or alkyl of 1 to 4 carbon atoms, A is ##STR2## Y.sub.1, Y.sub.2, Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, Z.sub.5, Z.sub.6 and Z.sub.7 are hydrogen, chlorine, bromine, methyl, ethyl, methoxy or ethoxy. These new disazo pigments can be used in all fields of dyeing where pigments are typically used. They are distinguished by improved fastness properties and tinctorial strength.

REFERENCES:
patent: 2195011 (1940-03-01), Petitcolas et al.

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