Method for spectrally sensitizing photographic light-sensitive e

Details Method for spectrally sensitizing photographic light-sensitive e Method for spectrally sensitizing photographic light-sensitive e

1974-11-15

1976-05-11

Brown, J. Travis

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

96130, 96131, 96132, 96133, 96137, G03C 124, G03C 116

Patent

active

039559963

ABSTRACT:
A method for spectrally sensitizing a photographic light-sensitive emulsion, which comprises dissolving a photographic spectrally sensitizing dye having an amidinium ion auxochrome in an organic solvent containing a substantially water-free acid having a pKa not exceeding about 5, and adding this dye-containing acid-organic solvent solution to a light-sensitive emulsion.

REFERENCES:
patent: 3482981 (1969-12-01), Van Lare
patent: 3485634 (1969-12-01), Owen et al.
patent: 3822135 (1974-07-01), Sakai et al.

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