Gelatin-modified polyurethane and polyester film base

Details Gelatin-modified polyurethane and polyester film base Gelatin-modified polyurethane and polyester film base

1998-06-04

1999-06-08

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430531, 430539, 430537, 430527, 430510, 4284237, G03C 193, B32B 2700, B32B 2440

Patent

active

059104015

ABSTRACT:
The present invention is an imaging base which includes a polyester film support and an adhesion promoting layer directly adhered to a surface of the support. The adhesion promoting layer is formed by the coating and subsequent drying of a coating composition comprising a gelatin-grafted-polyurethane. The gelatin-grafted polyurethane is covalently bound to the polyurethane through a grafting agent wherein the ratio of gelatin to polyurethane is from 1:10 to 2:1. In one embodiment of the invention the imaging support is coated with at least one silver halide emulsion layer to form a photographic element.

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