Photographic elements having oxonol dyes

Details Photographic elements having oxonol dyes Photographic elements having oxonol dyes

1987-07-13

1989-08-08

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430512, 430517, 430522, G03C 184

Patent

active

048552216

ABSTRACT:
Photographic elements having oxonol dyes of the formula: ##STR1## R.sup.1 and R.sup.2 each independently represent alkyl of from 1 to 5 carbon atoms are disclosed. The dyes are particularly useful as filter dyes in the form of solid particle microcrystalline dispersions.

REFERENCES:
patent: 3795519 (1974-03-01), Miyazako et al.
patent: 4092168 (1978-05-01), Lemahieu et al.
Weast Handbook of Chemistry and Physics C169 and C174 and C74, (1971).

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