Imidazole azo dyes

Details Imidazole azo dyes Imidazole azo dyes

1986-12-03

1988-05-10

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534581, 534582, 534650, 534787, 534788, 534791, 534792, 534794, 534795, 534887, C07C10700, C09B 29036, C09B 2909, C09B 2924

Patent

active

047436832

ABSTRACT:
A photographic recording material which contains at least one dye of the formula ##STR1## wherein D is the group of atoms necessary to complete a 5-membered ring that contains at least one nitrogen atom, A is hydrogen, alkyl, alkoxy, phenyl, alkylthio, cyano, nitro or halogen, n is 0 to 3, R.sub.1 is hydrogen, alkyl, hydroxyl, acylamino, R.sub.6 is hydrogen or unsubstituted or substituted amino, and R.sub.4 is hydrogen or alkoxy. The material is distinguished by good color reproduction, brilliant colors and excellent lightfastness.

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