Color developer compositions containing improved yellow dye-form

Details Color developer compositions containing improved yellow dye-form Color developer compositions containing improved yellow dye-form

1975-06-02

1976-11-30

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260471R, 260471H, C07C10172

Patent

active

039949672

ABSTRACT:
Color developer compositions are described which contain, dissolved therein, both (a) an organic aromatic primary amino developing agent and (b) a yellow-dye-forming coupler having the structure: ##SPC1##
Wherein R is a branched alkyl group containing 3 to 6 carbon atoms; X is Cl or Br; Y is X, hydrogen or alkyl (1 to 8 carbon atoms); and A and B differ and are either H or --COOM, wherein M is a photographically inactive cation or a metyl or ethyl group. Use of such compositions results in more efficient coupler usage and color products having yellow dyes with improved aging characteristics. The invention encompasses such liquid developer compositions, blends of (a) and (b), and the yellow dye-forming couplers, per se.

REFERENCES:
patent: 3277155 (1966-10-01), Loria et al.
patent: 3384657 (1968-05-01), Weissberger et al.
patent: 3408194 (1968-10-01), Loria
patent: 3644498 (1972-02-01), Loria

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