Protective overcoat for photographic elements

Details Protective overcoat for photographic elements Protective overcoat for photographic elements

G - Physics

03

C

400/1356, 96/214

G03C 1/76 (2006.01)

Patent

CA 1248255

-i- PROTECTIVE OVERCOAT FOR PHOTOGRAPHIC ELEMENTS Abstract of the Disclosure 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 poly- merized recurring acid monomer and is useful as a protective layer in radiation-sensitive elements.

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