PHOTOGRAPHIC DIFFUSION TRANSFER FILMS, PROCESSES AND COMPOSITION

Details PHOTOGRAPHIC DIFFUSION TRANSFER FILMS, PROCESSES AND COMPOSITION PHOTOGRAPHIC DIFFUSION TRANSFER FILMS, PROCESSES AND COMPOSITION

1973-04-16

1978-02-28

Torchin, Norman G.

Gas separation: apparatus

Magnetic separating means

And electric field separation apparatus

96 29D, 96 566, 96 77, 96 99, 96100, G03c 700, G03c 554, G03c 140, G03c 110

Patent

active

040765296

ABSTRACT:
Color photographic elements, compositions, diffusion transfer film units and processes are described which employ a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol which is preferably alkali-cleavable upon oxidation to release a diffusible color-providing moiety.

REFERENCES:
patent: 2543338 (1951-02-01), Schmidt et al.
patent: 3245789 (1966-04-01), Rogers
patent: 3255001 (1966-06-01), Blout et al.
patent: 3443940 (1969-05-01), Bloom et al.
patent: 3734726 (1973-05-01), Figueras et al.
patent: 3751406 (1973-08-01), Bloom

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