Abstract: Polymers of high oxygen permeability and a low modulus of elasticity and ophthalmic lenses and contact lenses using the same are provided. The polymers are characterized in that they are obtained by copolymerizing 5 to 90 parts by weight of a monomer (SiMAA) represented by the formula below, 5 to 90 parts by weight of 3-tris (trimethylsiloxy) silyl propyl methacrylate (TRIS), 5 to 70 parts by weight of N,N-dimethyl acrylamide (DMAA) and 0.1 to 3 parts by weight of monomer having two or more copolymerizable carbon-carbon unsaturated bonds in 1 molecule (provided that the total quantity of SiMAA, TRIS and DMAA is 100 parts by weight and that the total quantity of SiMAA and TRIS is 30 to 95 parts by weight), and which are used for ophthalmic lenses.

Abstract: This invention provides an ophthalmic lens of high tensile elongation (i.e., that does not break easily).

Abstract: A monomer as represented by general formula (a) or (a′) below, with which a polymer having high oxygen permeability and transparency and suited to an ophthalmic lens is obtained, is provided.

Abstract: The present invention relates to a surface-treated plastic article including a thin layer composed of a polymer complex on the surface. The surface-treated plastic article can be produced by a treatment with at least one kind of aqueous solutions of polymers having a weight average molecular weight of 200 or more. According to the present invention, the plastic articles, such as contact lenses, having superior transparency, wettability, oxygen permeability, and mechanical properties can be provided.

Abstract: A monomer as represented by general formula (a) or (a′) below, with which a polymer having high oxygen permeability and transparency and suited to an ophthalmic lens is obtained, is provided.

Abstract: The present invention relates to a surface-treated plastic article including a thin layer composed of a polymer complex on the surface. The surface-treated plastic article can be produced by a treatment with at least one kind of aqueous solutions of polymers having a weight average molecular weight of 200 or more. According to the present invention, the plastic articles, such as contact lenses, having superior transparency, wettability, oxygen permeability, and mechanical properties can be provided.

Abstract: Polymers of high oxygen permeability and a low modulus of elasticity and ophthalmic lenses and contact lenses using the same are provided. The polymers are characterized in that they are obtained by copolymerizing 5 to 90 parts by weight of a monomer (SiMAA) represented by the formula below, 5 to 90 parts by weight of 3-tris (trimethylsiloxy) silyl propyl methacrylate (TRIS), 5 to 70 parts by weight of N,N-dimethyl acrylamide (DMAA) and 0.1 to 3 parts by weight of monomer having two or more copolymerizable carbon-carbon unsaturated bonds in 1 molecule (provided that the total quantity of SiMAA, TRIS and DMAA is 100 parts by weight and that the total quantity of SiMAA and TRIS is 30 to 95 parts by weight), and which are used for ophthalmic lenses.

Abstract: The present invention relates to a surface-treated plastic article including a thin layer composed of a polymer complex on the surface. The surface-treated plastic article can be produced by a treatment with at least one kind of aqueous solutions of polymers having a weight average molecular weight of 200 or more. According to the present invention, the plastic articles, such as contact lenses, having superior transparency, wettability, oxygen permeability, and mechanical properties can be provided.

Abstract: An amorphous carbon material, especially for an electrode of a lithium ion secondary battery, is characterized by an interlayer spacing d(002), obtained from the X-ray diffraction line assigned to the (002) plane of the carbon, of 0.345 nm to 0.365 nm, a ratio (Ps) os the number of carbon atoms involved in the layer structure to the total number of carbon atoms of from 0.54 to 0.85, and a ratio of the total nitrogen:total carbon atoms in the amorphous carbon of 0.005:1 to 0.055:1. The amorphous carbon material is prepared by applying a heat treatment to an amorphous carbon under under vacuum or inert gas atmosphere for at least 30 minutes to provide the desired crystalline structure. The carbon material may take the form of carbon fiber material, especially short carbon fibers obtained by pulverizing larger carbon fibers. A lithium ion secondary battery containing an electrode comprising such an amorphous carbon material has a large discharge capacity and high charge-discharge cycle characteristics.

Abstract: An electrode substrate for liquid crystal display devices is constructed with a resin substrate 4, a cured coating 3, a cured coating 2 and an ITO film 6 laminated in that order. The resin substrate 4 comprises a transparent resin which is a copolymer containing not less than 20% by weight of maleimide type monomer units, having a crosslinked structure and having a glass transition temperature of not lower than 160.degree. C. and not higher than 200.degree. C., and has a thickness of 0.1 to 0.8 mm. The cured coating 3 is a cured coating comprising a polyvinyl alcohol crosslinked with an epoxysilane represented by the formula R.sup.1 SiX.sub.3 wherein R.sup.1 is an organic group of 1 to 10 carbon atoms having a glycidyl group and X is a hydrolyzable group. The cured coating 2 is a siloxane type cured coating containing fine silica particles. The ITO film 6 is an ITO film having a grainy surface with grains of a diameter of not larger than 500 nm, formed at a substrate temperature of not higher than 100.degree.

Abstract: A plastic optical article wherein a transparent coating film is applied on a transparent three-dimensional cross-linked resin having a glass transition temperature of at least 130.degree. C. The article has excellent heat resistance, solvent resistance, chemical resistance, abrasion resistance and transparency, and is used as optical materials for optical lenses and substrate materials for various display devices. Also when an inorganic thin film is deposited on a surface such as a transparent electro-conductive film, a thin film having a high heat resistance can be obtained.

Abstract: A transparent article comprising on the surface of a transparent substrate a cured transparent coating film composed of a composition comprising 100 parts by weight of an organic silicon compound represented by the following general formula (I) and/or a hydrolysis product thereof:R.sup.1.sub.a R.sup.2.sub.b Si(OR.sup.3).sub.4-a-b (I)wherein R.sup.1 and R.sup.2 each stand for an alkyl group, an alkenyl group, an aryl group or a hydrocarbon group having a halogen group, an epoxy group, a glycidoxy group, an amino group, a mercapto group, a methacryloxy group or a cyano group, R.sup.3 stands for an alkyl group having 1 to 8 carbon atoms, an alkoxyalkyl group, an acyl group or a phenyl group, and a and b are 0 or 1,10 to 300 parts by weight of a polyfunctional epoxy resin having an aromatic ring and/or an aliphatic ring and 25 to 800 parts by weight of antimony oxide fine particles having an average particle size of 1 to 200 m.mu..