Heterocyclic compounds useful as color photographic material

Details Heterocyclic compounds useful as color photographic material Heterocyclic compounds useful as color photographic material

1979-08-30

1982-04-13

Rizzo, Nicholas S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

26032685, 548266, 548222, 548341, 548185, 430557, 430558, C07D27704

Patent

active

043248985

ABSTRACT:
Color photographic material is provided which comprises at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## in which G represents a yellow coupler radical bonded via the active methine group to the heterocyclic ring, Z represents --CO-- or --SO.sub.2 -- and M represents a substituent and A represents the non-metallic atoms necessary to complete a five-membered saturated heterocyclic ring.
The new two-equivalent yellow couplers lead due to their improved reactivity (high maximum density), minimal fog and high fastness to light and outstanding spectral properties of the dyestuffs formed therefrom to a color photographic material of advantageous properties.

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