Photographic films
light-sensitive photographic emulsion layers of photographic films are bonded directly, i.e. without an intermediate gelatin subbing layer, to a polymeric subbing layer containing adhesion-promoting particles of an inorganic oxide such as silica having a nominal particle size of 0.001 to 10 .mu.m and present in an amount 5 to 80% by weight. The polymeric subbing layer may be corona discharge treated before the application of the photographic emulsion layer. The subbing polymer may comprise a homopolymer or copolymer of styrene; a copolymer of butadiene; a copolymer of a vinyl ester; a polyester or copolyester; a polyurethane; a copolymer comprising an acrylic acid ester and/or a methacrylic acid ester; a copolymer of vinyl chloride; or a copolymer of vinylidene chloride. The preferred film support is a polyethylene terephthalate film.
Latest Bexford Limited Patents:
Type: Grant
Filed: Dec 20, 1978
Date of Patent: Sep 4, 1979
Assignee: Bexford Limited (London)
Inventor: Alan H. Cook (Manningtree)
Application Number: 5/971,217
International Classification: G03C 178;
