Polymeric dye-forming couplers

Details Polymeric dye-forming couplers Polymeric dye-forming couplers

1990-05-07

1992-08-25

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430364, 430549, 430553, 430554, 430557, 430565, G03C 7327

Patent

active

051418444

ABSTRACT:
Photographic elements are described containing polymeric dye-forming couplers in which the polymer contains coupler moieties that upon reaction with oxidized color developing agent yield dyes of a least two different hues. In one embodiment a neutral dye is formed. In another embodiment a minor proportion of one coupler moiety is used to modify or current the spectral absorption characteristics of another coupler moiety.

REFERENCES:
patent: 2592514 (1952-04-01), Harsh
patent: 4126461 (1978-11-01), Pupo et al.
patent: 4128427 (1978-12-01), Manbaliu et al.
patent: 4612278 (1986-09-01), Lau et al.
patent: 5017667 (1991-05-01), Cawse et al.

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