Photographic silver halide materials containing yellow coupler

Details Photographic silver halide materials containing yellow coupler Photographic silver halide materials containing yellow coupler

1980-11-24

1982-02-02

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430472, 430475, 430476, 430557, 430558, G03C 700, G03C 140

Patent

active

043140238

ABSTRACT:
A photographic yellow coupler having a general formula selected from the group consisting of (I), (II) and (III) ##STR1## wherein A is a yellow coupler residue defined by removing one hydrogen atom of a active methylene group from a yellow coupler having the active methylene group; Q is a group having a formula selected from the group consisting of ##STR2## and ##STR3## (where X and Y are individually a hydrogen atom or an alkyl, acyl, aryl or aralkyl group; Z is a hydrogen atom or an alkyl, aryl or aralkyl group; and R.sub.1 and R.sub.2 are individually a hydrogen atom or an alkyl, aryl or aralkyl group or both of R.sub.1 and R.sub.2 together may form a benzylidene group or a cycloalkyl group); and Q' is a group of the formula --CH.sub.2 --CH.sub.2 -- or ##STR4## (wherein R.sub.3 is a hydrogen or halogen atom or an alkoxy group; R.sub.4 is a hydrogen or halogen atom, an amino, acylamino, ureido, lower alkyl, alkoxy or hydroxy group; and R.sub.4 and R.sub.5 are individually a lower alkyl group).

REFERENCES:
patent: 3730722 (1973-05-01), Inoue et al.

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