Abstract An opaque film element suitable for photographic inverse transfer elements comprising a dimensionally stable hydrophobic macromolecular organic film base containing a sufficient amount of a dispersed black pigment to provide an optical density of at least 8.0 and bearing on one surface a non-tacky anchoring layer of a vinylidene chloride/alkyl acrylate/itaconic acid terpolymer, said layer being coated with an antistatic composition comprising an aqueous dispersion containing a coalescible ternary copolymer of methyl methacrylate/ethyl acrylate/methacrylic acid, finely divided, highly conductive, carbon black and optionally, particles of a polyfluoroethylene resin, the resulting layer having a resistivity of <107 ohms per square. The opposite surface may have an anchoring layer as described above or may be otherwise treated to receive a colloid receptive layer for diffusion inverse transfer processes or a colloid-silver halide emulsion layer.
A film according to claim 1 wherein the polymer of which the film is made is a polyester and has an optical density of at least 8.
Claim 2
Dependent Claim
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29 to 45 percent by weight of ethyl acrylate
Claim 3
Dependent Claim
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about 5 percent by weight of methacrylic acid b. a coalescing amount of a coalescing agent and c. from 0.25 to 0.50 part by weight of carbon black per part of binder.
Claim 4
Dependent Claim
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A film according to claim 2 having an anchor layer containing a copolymer comprised of at least 21 percent by weight of vinylidene chloride, said layer of antistatic composition being adhered to said anchor layer.
Claim 5
Dependent Claim
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A film according to claim 3 wherein the copolymer of the anchor layer is comprised of at least 35 percent by weight of vinylidene chloride.
Claim 6
Dependent Claim
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A film according to claim 4 wherein the copolymer of the anchor layer is a sequentially polymerized mixture of a. 90 to 60 percent by weight of a vinylidene chloride/-alkyl acrylate/itaconic acid terpolymer wherein the alkyl group contains one-four carbon atmos and wherein the components are present in respective amounts by weight of 35-96 percent, 3.5-64.5 percent and 0.5-25 percent and b. 10 to 40 percent by weight of a polymer of an alkyl acrylate or alkyl methacrylate wherein the alkyl group contains 1-10 carbon atoms, formed by addition polymerization in the presence of said terpolymer.
Claim 7
Dependent Claim
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A film according to claim 5 wherein said layer of antistatic composition has a coating weight of 7-20 mg/dm2 and a resistivity of less than 107 ohms per square.
Claim 8
Dependent Claim
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A film according to claim 6 wherein said coalescing agent is a glycol ether.
Claim 9
Dependent Claim
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A film according to claim 7 wherein said glycol ether coalescing agent is ethylene glycol monoethyl ether or diethylene glycol monoethyl ether.
Claim 10
Dependent Claim
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A film according to claim 8 wherein said terpolymer binder has a softening point of from 70* C. to 80* C.
Claim 11
Dependent Claim
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A film according to claim 1 wherein said dispersion additionally contains up to 1 percent by weight, based on said terpolymer, of polyfluoroethylene resin particles selected from trifluoroethylene and tetrafluoroethylene polymers.