Dyestuffs and their use in photographic material

Details Dyestuffs and their use in photographic material Dyestuffs and their use in photographic material

1982-09-20

1984-05-01

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430364, 430517, 430559, G03C 184

Patent

active

044462271

ABSTRACT:
The new compounds of the general formula ##STR1## where R.sub.1 is hydrogen, alkyl or cyclic alkyl, R.sub.2 and R.sub.3 are each hydrogen, alkyl, a carboxylic acid, ester or amide group or cyano, and R.sub.4, R.sub.5 and R.sub.6 are each alkyl or aryl, are useful as antihalation dyes and as image dyes in photographic materials for dye-bleaching processes.

REFERENCES:
patent: 4233399 (1980-11-01), Kitzing et al.
patent: 4234677 (1980-11-01), Postle
patent: 4353974 (1982-10-01), Webb et al.

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