Tri-nuclear dyes for photographic compositions and method of pre

Details Tri-nuclear dyes for photographic compositions and method of pre Tri-nuclear dyes for photographic compositions and method of pre

1988-10-05

1990-10-23

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430573, G03C 126

Patent

active

049651838

ABSTRACT:
Compounds of the formulaa: ##STR1## where Z.sub.1, Z.sub.2, L.sub.1 -L.sub.5, R.sub.1, R.sub.2, R.sub.3, m, and n are as defined herein are disclosed. A method of making the componds is also disclosed. the compounds are useful as sensitizing dyes in photographic elements.

REFERENCES:
patent: 3539349 (1970-11-01), Brooker et al.
patent: 3565630 (1971-02-01), Millikan et al.
patent: 3822135 (1974-07-01), Sakai et al.
patent: 4725532 (1988-02-01), Kameoka et al.
patent: 4751175 (1988-06-01), Aotsuka et al.
Chemical Abstracts 82382m, vol. 75, 1971.

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