Backing layer for motion picture film

Details Backing layer for motion picture film Backing layer for motion picture film

1998-06-04

1999-06-08

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430510, 430522, 430527, 430531, 430539, 430934, 430961, 430642, G03C 185, G03C 1825, G03C 176

Patent

active

059103990

ABSTRACT:
The present invention is a motion picture film which includes a support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective overcoat. The protective overcoat includes a polyurethane binder having a tensile elongation to break of at least 50% and a Young's modulus measured at a 2% elongation of at least 50000 lb/in.sup.2, and a topcoat farthest from the support. The topcoat is formed by the coating and subsequent drying of a coating composition comprising gelatin-grafted polyurethane comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein the ratio of gelatin to polyurethane is from 1:10 to 2:1.

REFERENCES:
patent: 5066572 (1991-11-01), O'Connor et al.
patent: 5679505 (1997-10-01), Tingler et al.
patent: 5786134 (1998-07-01), Nair et al.
patent: 5804360 (1998-09-01), Schell et al.
Copending, commonly assigned US Patent Application Serial No. 08/856,711, filed May 15, 1997.

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