Process of making a photographic elements comprising protective

Details Process of making a photographic elements comprising protective Process of making a photographic elements comprising protective

1985-10-22

1987-06-02

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

427154, 430631, 430961, G03C 182

Patent

active

046703764

ABSTRACT:
Photographic elements comprising at least one protective hydrophilic colloid layer comprising at least one urethane of polyethylene oxide compounds as antistatic agent in the form of dispersed droplets having an average diameter ranging from 1500 to 12000 nm and method of covering such photographic elements with at least one such protective hydrophilic colloid layer obtained by the steps of dissolving such urethane in a water-immiscible solvent medium, emulsifying the resulting solution in aqueous hydrophilic colloid, removing said water-immiscible solvent medium by evaporation to form the dispersed droplets in the aqueous hydrophilic colloid, and coating the latter as such or after having been mixed with additional hydrophilic colloid to form the protective hydrophilic colloid layer.

REFERENCES:
patent: 3551152 (1970-12-01), Mackey et al.
patent: 3552972 (1971-01-01), Meyer et al.
patent: 4542035 (1985-09-01), Steklenski et al.
patent: 4582781 (1986-04-01), Chen et al.

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