Photographic products and processes employing nondiffusible azo

Details Photographic products and processes employing nondiffusible azo Photographic products and processes employing nondiffusible azo

1977-08-05

1979-03-06

Schilling, Richard L.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 3, 96 73, 96 77, 96 99, G03C 700, G03C 554, G03C 140, G03C 110

Patent

active

041428919

ABSTRACT:
Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable azo dye moiety such as an arylazo-pyrazolotriazole or arylazo-pyridinol. The compound contains:

REFERENCES:
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patent: 2495244 (1950-01-01), Felix et al.
patent: 2830042 (1958-04-01), Pittmar et al.
patent: 2938895 (1960-05-01), Oesterlein
patent: 3081167 (1963-02-01), Goulston et al.
patent: 3097196 (1963-07-01), Straley et al.
patent: 3196014 (1965-07-01), Rogers
patent: 3563739 (1971-02-01), Idelson
patent: 3931144 (1976-01-01), Eldredge et al.
patent: 3980479 (1976-09-01), Fields et al.
patent: 4013635 (1977-02-01), Landholm et al.

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