Imidazole azo dyes
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United States of America Patent
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May 10, 1988
Issued Date -
N/A
app pub date -
Dec 3, 1986
filing date -
Jul 27, 1984
priority date (Note) -
Expired
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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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