Polymeric couplers prepared in the presence of a coupler solvent

Details Polymeric couplers prepared in the presence of a coupler solvent Polymeric couplers prepared in the presence of a coupler solvent

1990-03-02

1993-08-17

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526193, 526210, 526213, 526217, C08F12054, C08F 200

Patent

active

052370305

ABSTRACT:
Photographic elements are described containing a polymeric dye-forming coupler that has been formed by emulsion polymerization of ethylenically unsaturated monomers in the presence of a high-boiling organic coupler solvent. Couplers of high activity are obtained.

REFERENCES:
patent: 3370952 (1968-02-01), Dawson
patent: 3451820 (1969-06-01), Umberger
patent: 4080211 (1978-03-01), Van Paesschen
patent: 4511647 (1985-04-01), Hirano et al.
patent: 4518687 (1985-04-01), Hirano et al.
patent: 4612278 (1986-09-01), Lau et al.

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