Photographic silver halide emulsion containing 2-equivalent cyan

Details Photographic silver halide emulsion containing 2-equivalent cyan Photographic silver halide emulsion containing 2-equivalent cyan

1975-02-05

1977-10-04

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

96 55, 96100R, G03C 700

Patent

active

040522121

ABSTRACT:
Cyan couplers of the 2-equivalent type, useful in photography are described. These compounds are characterized in that they have at least one divalent group of the formula, --OCH.sub.2 CO--, in the molecule with a split-off group at the methoxy site of said divalent radical. Photographic materials and color developers incorporating these couplers are also described.

REFERENCES:
patent: 2772161 (1956-11-01), Loria et al.
patent: 3432521 (1969-03-01), Loria
patent: 3516831 (1970-06-01), Wolf et al.

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