Photographic elements containing amino-substituted hydroxy-pyrid

Details Photographic elements containing amino-substituted hydroxy-pyrid Photographic elements containing amino-substituted hydroxy-pyrid

1979-05-08

1980-11-11

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430376, 430467, 430513, 430517, 430518, 430522, 430558, G03C 184

Patent

active

042333997

ABSTRACT:
Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group,

REFERENCES:
patent: 2203659 (1940-06-01), Sheppard et al.
patent: 3018177 (1962-01-01), Geiger et al.
patent: 3314794 (1967-04-01), Sawdey
patent: 3469985 (1969-09-01), Bailey et al.
patent: 4127413 (1978-11-01), Ishihara et al.

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