Color photographic materials

Details Color photographic materials Color photographic materials

1980-09-10

1981-07-21

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430372, 430564, G03C 140

Patent

active

042799902

ABSTRACT:
Discoloring and fading of silver halide color photographic materials are effectively prevented by incorporating a compound of the formula (I) or (II) in a silver halide photographic layer thereof ##STR1## wherein A represents an aryl group; R.sub.1, R.sub.2 and R.sub.3 each represents hydrogen, a halogen atom, an alkyl group, or an aryl group, except that R.sub.1, R.sub.2 and R.sub.3 cannot all be hydrogen atoms; R.sub.4 and R.sub.5 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acyl group, an aryloxy group, a carboxy group, a sulfo group or a hydroxy group; and R.sub.6 and R.sub.7 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, or a hydroxy group; or R.sub.6 and R.sub.7 together form an ##STR2## group or a 5-membered or 6-membered carbocyclic or heterocyclic ring.

REFERENCES:
patent: 2515121 (1950-07-01), Harsh et al.
patent: 2647057 (1953-07-01), Seary et al.
patent: 2726955 (1955-12-01), Parnell
patent: 3930866 (1976-01-01), Oishi et al.
patent: 4015990 (1977-04-01), Ishida et al.

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