Antistatic coating composition containing an...

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G - Physics

03

C

96/188, 117/60,

G03C 1/795 (2006.01) B29C 55/02 (2006.01) C08J 7/04 (2006.01) G03C 1/85 (2006.01) G03C 1/91 (2006.01)

Patent

CA 1054463

Abstract of the Disclosure A process is provided for adhering an antistatic layer to a dimensionally stable polyester film support, e.g. a film of polyethylene terephthalate. To an unstretched or only monoaxially stretched polyester film is applied an anti- static layer from an aqueous coating composition. After drying of the antistatic layer it is stretched biaxially or in a direction perpendicular to the first stretching ope- ration, together with the polyester film support and there- after the polyester film is heat-setted. The aqueous coating composition comprises 30 to 80% by weight of an electroconductive product, 10 to 40 % by weight of a stretch improving agent and 10 to 40 % by weight of an inert filler material. The polyester film support may be provided on its opposite side with a subbing layer and one or more light- sensitive gelatin silver halide emulsion layers.

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