Method of preventing the formation of contact spots on...

Details Method of preventing the formation of contact spots on... Method of preventing the formation of contact spots on...

G - Physics

03

C

96/180

G03C 1/00 (2006.01) G03C 1/76 (2006.01)

Patent

CA 1093886

ABSTRACT OF THE DISCLOSURE In a process for preventing the contact spots formed by contact of the back coating of photographic materials with the emulsion side an aqueous polymer dispersion obtained by polymerisation of halogen-free vinyl compounds and polyvinyl alcohol or partially acetylated polyvinyl alcohol in the presence of an anionic emulsifier are added to the casting composition applied as outermost back coating and/or as uppermost layer.

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