Photographic compositions and elements spectrally sensitized wit

Details Photographic compositions and elements spectrally sensitized wit Photographic compositions and elements spectrally sensitized wit

1981-10-15

1983-03-01

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430570, 430580, 430581, 430582, 430585, 430586, 430587, 430592, G03C 118

Patent

active

043755089

ABSTRACT:
Photographic silver halide compositions and elements are provided which are spectrally sensitized with new methine dyes. The dyes are prepared from new intermediate compounds which have an acetylenically unsaturated hydrocarbon chain terminated with a nucleophilic group, the acetylenically unsaturated hydrocarbon chain being bonded to a nitrogen atom in a heterocyclic ring system of the type used in cyanine dyes. The new intermediates also provide alternative synthetic routes to known dyes.

REFERENCES:
patent: 3414568 (1968-12-01), Collet et al.
patent: 3660103 (1972-05-01), Kampfer et al.
patent: 3705809 (1972-12-01), Nakazawa et al.
patent: 3706566 (1972-12-01), Shiba et al.
patent: 3745015 (1973-07-01), VanPee et al.
patent: 3765901 (1973-10-01), Schellekens et al.
patent: 3846137 (1974-11-01), Riester et al.
patent: 4026884 (1977-05-01), Mee
patent: 4028112 (1977-06-01), Sato et al.

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