Abstract: In an apparatus producing hydrogen gas by the decomposition reaction of water using photocatalyst, its miniaturization is achieved while suppressing the decrease of production efficiency of hydrogen gas as low as possible or improving the efficiency. The apparatus 1 comprises a container portion 2 receiving water W; a photocatalyst member 3 immersed in the water, having photocatalyst which generates excited electrons and positive holes when irradiated with light, causes a decomposition reaction of the water and generates hydrogen gas; a light source 4 emitting the light irradiated to the photocatalyst member; and a heat exchange device 7 conducting waste heat of the light source to the water in the container portion; wherein the water to be decomposed on the photocatalyst member in the container portion is warmed by the waste heat of the light source by the heat exchange device.

Abstract: A vehicle interior lighting device includes a light source which is installed at an end of an instrument panel of a vehicle. Light emitted from the light source propagates from the instrument panel toward a door panel, and is projected on a surface of a door trim of the door panel. A decorative pattern element is installed on a light emitting side of the light source. As light from the light source passes through the decorative pattern element, the light can create a pattern on a surface of the door trim. Because the light source is installed on the instrument panel spaced from the door trim rather than on the door trim itself, light can be projected on a large area of the door trim. Furthermore, an impressive feature of a decorative pattern which changes in accordance with a door opening angle can be achieved.

Abstract: A polyvinyl chloride composition comprising polyvinyl chloride having dispersed therein platelet aluminum powders, characterized in that the aluminum powders have a diameter of at least 10.mu. and are used in an amount of 0.2-10 parts by weight per 100 parts by weight of the polyvinyl chloride. This composition affords by molding a weather-resisting resinous molded article of metallic luster in appearance.

Abstract: A colored resinous article having a lurking or underlying tone of metallic luster which comprises (a) a resinous molded article having been overlaid on the surface thereof successively with (b) a highly weather-resistant two-component polyurethane paint or UV-curable paint as a base coat, (c) a filmy layer of a metal of 20-300.ANG. in thickness and (d) a highly weather-resistant and abrasion-resistant two-component polyurethane paint or UV-curable paint as a top coat, either of said (a) and said (b) having incorporated thereinto a material of a desired color tint. The colored resinous articles with a concealed tone of metallic luster are manufactured by applying onto the surface of (a) a resinous molded article (b) a highly weather-resistant two-component polyurethane paint or UV-curable paint as base coat, either of said (a) and said (b) having incorporated thereinto a material of a desired color tint, applying (c) a filmy layer of a metal of 20-300.ANG.

Abstract: A sealing boot of elastomeric material for hermetically enclosing an annular opening between a support member and a movable member axially reciprocable on the support member, the sealing boot including a tubular bellows which is integrally formed at one end thereof with a first cylindrical sealing sleeve portion coupled over the support member and at the other end thereof with a second cylindrical sealing sleeve portion coupled within the movable member, the sealing boot being characterized in that the first cylindrical sealing sleeve portion being connected substantially at its center to the one end of the tubular bellows and being formed at its inner end shoulder with an annular thick wall tapering radially toward the inner wall surface of the tubular bellows.

Abstract: A weather-resisting extruded rubbery article based on carbon black-incorporated EPDM rubber substrate having on the surface thereof a thin layer of a colored rubbery material of a smooth or suede-like appearance integrally formed on the substrate by extrusion molding, characterized in that the colored rubbery material has been derived from 75-0% by weight of EPDM and 25-100% by weight of a graft copolymer of EPDM and vinyl chloride together with one or more coloring fillers.

Abstract: A flexible lustrously metallized resinous article which comprises a molded article made of a thermoplastic polyurethane or a polyblend of a thermoplastic polyurethane and a thermoplastic synthetic resin, the molded article having been coated on the surface thereof with a flexible polyurethane paint as a base coat, a metal film applied by means of sputtering and a flexible polyurethane paint as top coat. The flexible lustrously metallized resinous article is manufactured by applying a flexible polyurethane paint as a base coat onto a molded article made of a thermoplastic polyurethane or a polyblend of a thermoplastic polyurethane and a thermoplastic synthetic resin, applying a metal film by means of sputtering onto the base coat after its curing, and thereafter applying a flexible polyurethane paint as a top coat onto the metal film.

Abstract: Molded plastic articles having on the surface thereof a thin metal film coated in any order of succession with protective layers of (a) a coat derived from 100 parts by weight of an acrylic copolymer having a hydroxyl number of 10-150, 10-150 parts by weight of an anti-yellowing polyisocyanate and 2-10 parts by weight of an ultraviolet rays-absorbing agent and (b) a coat cured by the action of ultraviolet rays.

Abstract: Molded plastic articles having on the surface thereof a thin metal film coated in any order of succession with protective layers of (a) a coat derived from 100 parts by weight of an acrylic copolymer having a hydroxyl number of 10-150, 10-150 parts by weight of an anti-yellowing polyisocyanate and 2-10 parts by weight of an ultraviolet rays-absorbing agent and (b) a coat cured by the action of ultraviolet rays.

Abstract: A new graft copolymer composed of an ethylene/propylene/non-conjugated diene terpolymer backbone and a homopolymerized or copolymerized methacrylic ester graft moiety. The graft copolymer is produced by grafting a lower alkyl methacrylate alone or in mixture with other ethylenically unsaturated monomer or monomers copolymerizable therewith to an ethylene/propylene/non-conjugated diene terpolymer in the presence of a radical polymerization initiator. The graft copolymer is useful as resinous or rubbery component in a coating or binding composition for treating various inorganic and organic materials including glass and fibers.