Abstract: In an optical recording disk wherein a resin layer cured with ultraviolet radiation is provided on a surface of a transparent substrate, the present invention consists in that a material having a heat distortion temperature of at least 65.degree. C. is employed for the ultraviolet-cured resin layer. The appearance of wrinkles on a UV-cured resin surface is suppressed, whereby an optical recording disk of high carrier-to-noise ratio and long lifetime can be provided.

Abstract: Disclosed is an unsaturated polyester resin composition which comprises an unsaturated polyester having a molecular weight per one unsaturated group of 1000 to 8000 and (1) a polymerizable monomer, a low-temperature hardener and a high-temperature hardener or (2) styrene and/or a derivative thereof and an unsaturated compound having a refractive index of 1.5 or less. This composition can be molded in a short time and forms no strain on hardening and is suitable as an adhesive for production of cathode ray tubes.

Abstract: An optical disc wherein a transparent base plate is made from a special light-curable resin composition comprising at least one compound of the formula: ##STR1## wherein R.sub.1 =H or methyl and n=0-5, and a photopolymerization initiator, is excellent in heat resistance, mechanical strength, moisture resistance, etc.

Abstract: The invention discloses an optical disc base plate obtained by curing with irradiation of light a light- or radiation-curable resin composition in which a photopolymerization initiator is contained in an amount of 0.5 to 5 parts by weight per 100 parts by weight of a resin composition comprising the compounds (1), (2) and (3) mixed in amounts falling in the area defined by lines A-B-C-D-E-A in the triangular diagram of FIG.

Abstract: An optical disc obtained by placing in parallel two optical disc base plates comprising a transparent substrate, a primer layer formed thereon, and a recording film formed thereon, or the transparent substrate and the primer layer being integrated into one body, wherein the primer layer is made from a special resin composition, is excellent in properties, particularly in moisture resistance.

Abstract: Optical discs obtained by using as a primer layer formed on a transparent substrate and under a metal-made recording film a cured ultraviolet-curable resin composition comprising (a) a reaction product of isophorone diisocyanate or the like and an acrylate or methacrylate, (b) a diacrylate or dimethacrylate and (c) a photopolymerization initiator are excellent in recording sensitivity, moisture resistance, heat resistance, adhesive properties, reliability, etc.

Abstract: A liquid crystal display device comprising two substrates being provided in parallel to each other at a given distance and each having a Nesa film on the counterposed surface, at least one of the substrates being transparent, and a liquid crystal being filled between the substrates, the counterposed surfaces of the substrates each being coated with polymer of organosilicone compound having groups reacting with the substrates to a thickness of 300-1,500 .ANG. as an alignment film. The device has thick alignment films and good electrooptical characteristics.

Abstract: This invention relates to a substrate for optical disc recording media which contains a UV-curable resin film between a transparent film and a thermally-decomposing high molecular film, the UV-curable resin film being formed with a UV-curable resin composition comprising given quantities of:(a) a polybutadiene having acrylic or methacrylic group at one or both ends of the molecule,(b) a hydroxyalkyl acrylate or methacrylate,(c) an acrylic- or methacrylic-group-containing diluent, and(d) a photo-polymerization initiator.

Abstract: A novel alignment film for liquid crystal is prepared by depositing an organic solvent solution of an alkylalkoxy silane and an alkoxymetallic compound of Ti, Zr, Ge onto an electrode-side surface of substrate, and curing the solution on the substrate by heating.The alignment film shows good alignment for various types of liquid crystals and has long life.

Abstract: A transparent conducting film is prepared from a composition comprising an indium compound, a tin compound, and a solvent as essential components, the tin compound being a compound represented by the following general formula:(R).sub.a Sn(NO.sub.3).sub.b (X).sub.4-a-b (1)wherein R is an alkyl group having 1 to 4 carbon atoms, X is a hydroxyl group, a halogen atom, or a carboxyl group, and a and b are integers of 1.about.3, and a+b.ltoreq.4 by coating a substrate with the said composition, subjecting the coated substrate to ultraviolet irradiation at a substrate temperature of 200.degree. C. or higher, and heating the substrate at 400.degree. C. or higher. The composition has a long pot life and the film has a low resistance and distinguished mechanical strength, chemical resistance and etching susceptibility.

Abstract: A transparent electroconductive film of lower resistance with a smaller content of remaining organic components and less pinholes than those of the conventional transparent electroconductive film is produced by applying a coating solution selected from (a) a coating solution comprising an inorganic indium compound free from a photosensitive group in the molecule or an inorganic tin compound free from a photosensitive group in the molecule, an organic ligand, and an organic solvent, (b) a coating solution comprising an organic indium compound free from a photosensitive group in the molecule, or an organic tin compound free from a photosensitive group in the molecule, and an organic solvent, and (c) the coating solution (a) or (b) further containing a dopant to the surface of a substrate, thereby forming a film thereon, and then irradiating the substrate with radiation capable of exciting organic groups, for example, ultraviolet rays in a state where the substrate is kept at a high temperature (100.degree.-600.

Abstract: Transparent electroconductive film having no cracks and whitening is obtained by coating on a substrate a composition comprising an inorganic indium salt, a polybasic carboxylic acid or polybasic carboxylic acid anhydride and a solvent, and calcining the coated composition at a temperature of 300.degree. to 700.degree. C. under an atmosphere containing oxygen. When a tin compound is added to the composition, sheet resistance of the transparent electroconductive film can be adjusted favorably.

Abstract: A liquid crystal display device using an alignment film of ladder-type organosilicone polymer or cross-linking product of cross-linkable ladder-type organosilicone polymer makes a homogeneous liquid crystal orientation, irrespectively of the kind of the liquid crystal used, never lowers its orientation ability even when fusion-sealing or sealing of the liquid crystal device is made with glass or thermosetting resin, and makes a clear display owing to the alignment film being colorless. The alignment film is insoluble in the liquid crystal used.

Abstract: Flame-retardant epoxy resin compositions comprising a polyepoxide, an acid anhydride curing agent, an imidazole curing accelerator, aluminum trihydrate powder and red phosphorus powder or red phosphorus powder coated by a thermo-setting resin have a lower viscosity and therefore show a longer pot life and better workability on casting as compared with prior art resin compositions. Also, a fly-back transformer coil produced by casting of said flame-retardant epoxy resin compositions is flame-retardant. Even if it burns slightly, no toxic gas is produced. Therefore, the coil has advantages in that a magnet wire is not corroded and voids are difficult to be formed and thereby partial discharge is difficult to occur, resulting in a long life and a stable output voltage.