Magenta dye-forming coupler

Details Magenta dye-forming coupler Magenta dye-forming coupler

1990-08-02

1992-05-26

Schofer, Joseph L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548158, 544333, 546266, 546268, 546271, 430558, C07D40300

Patent

active

051169908

ABSTRACT:
There are provided 1H-pyrazolo[1,5-b]-1,2,4-triazole magenta couplers or 1H-pyrazolo[5,1-c]-1,2,4-triazole magenta couplers characterized by having at the 6-position a phenoxy group, on the ortho-position of which is an alkoxy group or an aryloxy group. A photographic material comprising the magenta coupler is excellent in color reproducibility and exhibits superior photographic characteristics in any of sensitivity, gradation, and color density.

REFERENCES:
patent: 3725067 (1973-03-01), Bailey
patent: 4500630 (1985-02-01), Sato et al.
patent: 4540654 (1985-09-01), Sato et al.
patent: 4621046 (1986-11-01), Sato et al.
patent: 4622287 (1986-11-01), Umemoto et al.
patent: 4822730 (1989-04-01), Furutachi et al.

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