Photographic silver halide materials and process comprising a py

Details Photographic silver halide materials and process comprising a py Photographic silver halide materials and process comprising a py

1989-06-12

1991-02-12

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430386, 430387, G03C 738

Patent

active

049923617

ABSTRACT:
Novel 1H-pyrazolo[3,2-c]-s-triazole dye-forming couplers containing in the 3-position a tertiary carbon group enable more extensive development of silver halide images in photographic silver halide materials and enable preparation of improved dispersions in photographic silver halide materials because of reduced tendency to form crystals. These couplers are useful in photographic silver halide materials and processes.

REFERENCES:
patent: 4443536 (1984-04-01), Lestina
patent: 4548899 (1985-10-01), Nakayama et al.
patent: 4607002 (1986-08-01), Nakayama et al.
patent: 4623617 (1986-11-01), Kaneko
patent: 4639413 (1987-01-01), Kawagishi et al.
Research Disclosure No. 12443, Research Discousre, vol. 124, 1974, Kenneth Mason Publications Ltd., Hampshire, England.
Research Disclosure No. 17643, Research Disclosure, vol. 176, 1978, Kenneth Mason Publications Ltd., Hampshire, England.

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