Acrylonitrile copolymers and protective overcoats for...

C - Chemistry – Metallurgy – 08 – F

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96/204, 402/407,

C08F 220/44 (2006.01) G03C 1/76 (2006.01) G03C 11/08 (2006.01)

Patent

CA 1236646

-i- NOVEL ACRYLONITRILE COPOLYMERS AND PROTECTIVE OVERCOATS FOR PHOTOGRAPHIC ELEMENTS Abstract of the Disclosure Novel polymers having the structure Image and Image ; wherein A represents a polymerized acrylonitrile monomer; B represents a polymerized hydrophobic ethyleni- cally unsaturated monomer; C represents a polymerized cationically charged vinylidene monomer; x is from 10 to 90 weight percent; y is from 5 to 40 weight percent except that when B is a vinylidene halide monomer, y is 10 to 89.9 weight percent; and z is from 0.1 to 10 weight percent The polymers are useful in forming protective over- coats for photographic elements.

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