Abstract: A gradient coating is comprised of a basecoat derived from a polysiloxane prepolymer obtained from a mixture of one to three alkoxysilane monomers and at least one diepoxide monomer, and a lubricious reactant. The basecoat is applied to a substrate and dried. The lubricious reactant is then applied and allowed to permeate into the basecoat. The basecoat and lubricious reactant are then co-cured, resulting in a gradient coating composition. In addition to providing enhanced scratch and mar resistance, the gradient coating composition is solvent resistant and provides a durable hydrophobic and oleophobic surface, which makes it useful as a corrosion protectant and as a release agent.

Abstract: A substantially optically transparent article such as a lens having a wear-resistant surface comprises a substantially optically transparent polymeric substrate (e.g., a polycarbonate or polymethyl methacrylate substrate), and having a surface portion. A hard antiabrasive interconnecting layer is formed on the surface portion (typically by vacuum deposition and preferably by plasma-enhanced chemical vapor deposition), and a lubricious hydrophobic coating layer is bonded to the interconnecting layer. The lubricious hydrophobic coating layer, together with the hard antiabrasive interconnecting layer, form a wear-resistant surface on the substrate. The lubricious coating layer is formed from a hydrophobic organic lubricant such as a perfluoropolyether, a fatty acid, or a fatty acid esters. Methods of making such articles are also disclosed.

Abstract: A liquid crystal cell comprising a pair of opposed plates spaced apart a predetermined distance and containing a liquid crystal material confined therebetween by a fluoroelastomeric terpolymer sealant comprising repeating units of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene.

Abstract: A process for preparing polymeric oximes and photographic processing compositions containing polymeric oximes are described. The polymeric oximes are prepared by a process which comprises: introducing into an aqueous polymerization medium a portion of a polymerizable monomer to be polymerized, said polymerizable monomer having the formula ##STR1## wherein R is hydrogen or methyl, R.sup.1 is hydrogen, alkyl of from 1 to 4 carbon atoms, benzyl or phenyl, R.sup.2 is alkyl of from 1 to 4 carbon atoms, benzyl or phenyl, alkylene is a divalent alkylene radical having 1 or 2 carbon atoms, and R.sup.

Abstract: Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and an optical filter agent, and the image-receiving layer carries over it a layer of unhardened gelatin adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said decolorizing layer.

Abstract: A laminar triplex structure for use in the manufacture of electrical cells and batteries, cells and batteries made therefrom, and methods of making the same. The laminate comprises a thin flat sheet of separator material, a layer of metallic particles on one surface of the separator sheet and adhered thereto with a binder, and a layer of conductive plastic adhered to the layer of metal particles. The laminate is made by the process of coating a dispersion of metal particles in a solution of a polymeric binder in an organic solvent over the separator, drying to remove the solvent, coating over the dried metal layer with a dispersion of conductive particles in a solution of a polymer in an organic solvent, and drying to remove the solvent.

Abstract: Electrically conductive compositions comprising conductive particles dispersed in a matrix of a radial teleblock copolymer of styrene and butadiene, and coating compositions for making the same in sheet form and comprising dispersions of conductive particles in a solution of a radial teleblock copolymer of styrene and butadiene in an organic solvent.

Abstract: A laminar triplex structure for use in the manufacture of electrical cells and batteries, cells and batteries made therefrom, and methods of making the same. The laminate comprises a thin flat sheet of separator material, a layer of metallic particles on one surface of the separator sheet and adhered thereto with a binder, and a layer of conductive plastic adhered to the layer of metal particles. The laminate is made by the process of coating a dispersion of metal particles in a solution of a polymeric binder in an organic solvent over the separator, drying to remove the solvent, coating over the dried metal layer with a dispersion of conductive particles in a solution of a polymer in an organic solvent, and drying to remove the solvent.

Abstract: Transparent elements useful as supports for photographic image-carrying and/or image-recording layers are provided comprising a polyester film base having an anti-reflection coating on one surface. Image-carrying and/or image-recording layers may be coated on the opposed surface.The polyester film base of the transparent element has an index of refraction of at least 1.6, and the anti-reflection coating comprises a fluorinated polymer and has an optical thickness of a quarter wave. An isocyanate in the anti-reflection coating or between said coating and the polyester film base increases the abrasion resistance of the fluorinated polymer anti-reflection coating.