Photographic compositions and elements containing benzo[a]quinol

Details Photographic compositions and elements containing benzo[a]quinol Photographic compositions and elements containing benzo[a]quinol

1976-09-16

1978-08-22

Brown, J. Travis

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

96135, 96136, 96137, 96138, 96140, 96141, 542471, 542454, 542465, G03C 116

Patent

active

041086678

ABSTRACT:
The invention relates to methine dyes and photographic silver halide compositions and film elements comprising methine dyes which contain 9,9a-dihydropyrido-[1,2-a]indolium nuclei, benzo[a]quinolizinium nuclei or 6,7-dihydrobenzo[a]quinolizinium nuclei.

REFERENCES:
patent: 3408195 (1968-10-01), Oliver
patent: 3772034 (1973-11-01), Fumia
patent: 3880844 (1975-04-01), Fumia
patent: 4003750 (1977-01-01), Haseltine et al.
Research Disclosure 11213, Aug., 1973.

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