O-sulfonamidonaphthol diffusible dye image providing compounds

Details O-sulfonamidonaphthol diffusible dye image providing compounds O-sulfonamidonaphthol diffusible dye image providing compounds

1974-09-04

1977-10-11

Klein, David

Gas separation: apparatus

Magnetic separating means

And electric field separation apparatus

96290, 96 73, 96 74, 96 77, 96 99, 96100R, G03C 700, G03C 554, G03C 140, G03C 176

Patent

active

040533123

ABSTRACT:
Color photographic elements, diffusion transfer film units and processes are described which employ nondiffusible o-sulfonamidonaphthols which are alkali-cleavable upon oxidation to release a diffusible color-providing moiety.

REFERENCES:
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patent: 2774668 (1956-12-01), Rogers
patent: 3443939 (1969-05-01), Bloom et al.
patent: 3443940 (1969-05-01), Bloom et al.
patent: 3443941 (1969-05-01), Rogers
patent: 3443943 (1969-05-01), Rogers et al.
patent: 3698897 (1972-10-01), Gompf et al.
patent: 3734726 (1973-05-01), Figueras et al.
patent: 3751406 (1973-08-01), Bloom
patent: 3960569 (1976-06-01), Ono

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