Backside protective overcoat compositions for silver halide phot

Details Backside protective overcoat compositions for silver halide phot Backside protective overcoat compositions for silver halide phot

1999-11-01

2000-11-28

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430529, 430536, 430961, G03C 189, G03C 193, G03C 176

Patent

active

061533688

ABSTRACT:
A photographic element which includes a support having a frontside and a backside, at least one silver halide emulsion layer superposed on the frontside of the support; and a protective overcoat layer superposed on the backside of the support. The protective overcoat layer is formed from a coating solution comprising a continuous liquid organic medium having therein a mixture of dispersed core/shell polymer particles and a soluble polymer. The core/shell polymer particles comprise a core portion, which is insoluble in the organic medium, and a shell portion which has an affinity for both the core portion and the organic medium and has an acid number of from 25 to 200. The soluble polymer has an acid number of from 70 to 500 and the acid number of the soluble polymer is greater than the acid number of the shell of the core/shell polymer particles.

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