Acylacetanilide coupler with heterocyclic diacyl amino coupling-

Details Acylacetanilide coupler with heterocyclic diacyl amino coupling- Acylacetanilide coupler with heterocyclic diacyl amino coupling-

1973-07-16

1977-11-08

Klein, David

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

96100N, G03C 700, G03C 140

Patent

active

040574326

ABSTRACT:
A process for forming yellow image in a light-sensitive silver halide photographic material which uses as a yellow image-forming a coupler a compound of the formula ##STR1## wherein A is a yellow image-forming coupler residue having an active methylene group; ##STR2## is a group which has been substituted for one hydrogen atom of the active methylene group in said coupler residue A; and Z is a group selected from alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridine-diyl groups.

REFERENCES:
patent: 2992920 (1961-07-01), De Cat et al.
patent: 3458315 (1969-07-01), Loria
patent: 3516831 (1970-06-01), Wolf et al.
patent: 3730722 (1973-05-01), Inoue et al.

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