Protective overcoat for photographic elements

Details Protective overcoat for photographic elements Protective overcoat for photographic elements

1986-06-18

1988-04-05

Phillips, Delbert R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08L 120, G03C 178

Patent

active

047359765

ABSTRACT:
A polymer blend comprising cellulose nitrate and a polymer characterized in that (a) the polymer comprises at least 70 weight percent of polymerized recurring units derived from a hydrophobic monomer selected from the group consisting of styrene, alkyl acrylates and alkyl methacrylates and 10 to 24 weight percent of polymerized recurring units derived from an acid monomer selected from the group consisting of methacrylic acid and acrylic acid; and (b) the blend comprises from 20 to 70 weight percent of cellulose nitrate and from 8 to 15 weight percent of the polymerized recurring acid monomer and is useful as a protective layer in radiation-sensitive elements.

REFERENCES:
patent: 4025338 (1977-05-01), Miyatuka et al.
patent: 4431727 (1984-02-01), Steklenski
patent: 4473676 (1984-09-01), Steklenski

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