Silver halide emulsions containing yellow-dye-forming couplers

Details Silver halide emulsions containing yellow-dye-forming couplers Silver halide emulsions containing yellow-dye-forming couplers

1978-03-31

1979-06-12

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

G03C 140

Patent

active

041579194

ABSTRACT:
Novel bis yellow-dye-forming couplers are incorporated in photographic emulsions and elements. The couplers are represented by the structural formula ##STR1## where: R is an aryl group of 6 to 12 carbon atoms, an aryloxyalkylene or arylthioalkylene group having 6 to 12 carbon atoms in the aryl portion of the group and 1 to 4 carbon atoms in the alkylene portion of the group, or an alkyl group of 1 to 8 carbon atoms;

REFERENCES:
patent: 3408194 (1968-10-01), Loria
patent: 3447928 (1969-06-01), Loria
patent: 3476563 (1969-11-01), Loria
patent: 3542840 (1970-11-01), Porter
patent: 3617291 (1971-11-01), Sawdey
patent: 3894875 (1975-07-01), Cameron et al.
patent: 3933501 (1976-01-01), Cameron et al.

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