Abstract: According to the present invention, a sealing material for a high-pressure hydrogen container, which mainly comprises a silicone rubber composed of a dimethyl siloxane segment, a methyl vinyl siloxane segment, and a diphenyl siloxane segment, and a high-pressure hydrogen container using the sealing material are provided. In order to seal a high-pressure hydrogen container (CHG tank) system for fuel cell vehicles with an elastomer, the elastomer has (1): excellent durability in a variable pressure environment of high-pressure hydrogen; and (2): excellent sag resistance in low-temperature to high-temperature environments, and thus the significant technical objectives (1) and (2) have been achieved.

Abstract: A molded article located in the beam path of a radar device has only a slight amount of radio transmission loss and has a metallic color. The molded article comprises a substrate and a layer of ceramic material with which the external surface of the substrate is coated. The ceramic material includes nitride ceramics, oxide ceramics, carbide ceramics, and mixtures thereof. The ceramic material includes titanium nitride and/or aluminum nitride.

Abstract: According to the present invention, a sealing material for a high-pressure hydrogen container, which mainly comprises a silicone rubber composed of a dimethyl siloxane segment, a methyl vinyl siloxane segment, and a diphenyl siloxane segment, and a high-pressure hydrogen container using the sealing material are provided. In order to seal a high-pressure hydrogen container (CHG tank) system for fuel cell vehicles with an elastomer, the elastomer has (1): excellent durability in a variable pressure environment of high-pressure hydrogen; and (2): excellent sag resistance in low-temperature to high-temperature environments, and thus the significant technical objectives (1) and (2) have been achieved.

Abstract: There is provided a cylindrical fixing flange structure for a high-pressure gas container filled with high-pressure gas. The cylindrical fixing flange structure includes a high-pressure side primary seal zone provided with a metal touch seal and an atmosphere-side secondary seal zone provided with an elastomer seal. The high-pressure side primary seal zone and the atmosphere-side secondary seal zone are arranged adjacently to each other in the cylinder direction of the high-pressure gas container. The cylindrical fixing flange structure is a sealing structure which has a high degree of freedom of design and is suitable for a high-pressure hydrogen gas container for a fuel cell, in which the durability and reliability against pressurization/depressurization stress, which poses a problem with the sealing structure using elastomer seal only, are ensured, the gastightness is high, and the volume, especially the transverse width, of sealing structure is restrained.

Abstract: A metallically gross layer decorative molded article for use in the beam path of a radar device has a luxurious metallic design similar to the color tone of a chrome plating and the like that does not hinder the transmission of radio wave. The metallically gross layer decorative molded article includes a substrate comprised of a transparent resin layer, a tin and/or tin alloy layer provided on a back surface of the substrate, and a decorative paint layer provided on a back surface of the tin and/or tin alloy layer.

Abstract: According to the present invention, a high-pressure hydrogen container that is filled with hydrogen at high pressures, in which at least one elastomer is used as a sealing material, such elastomer having a hydrogen gas permeability coefficient or helium gas permeability coefficient of 5.0×10?10 to 5.0×10?9 cm3 (STP)·cm/cm2·sec·cmHg, is provided. The following main technical objectives for realizing sealing with an elastomer material for a high-pressure hydrogen container (CHG tank) system for fuel-cell vehicles are achieved: (1) good durability in variable pressure environments of high-pressure hydrogen is imparted to such elastomer material; and (2) good anti-permanent deformation properties in low-temperature and high-temperature environments are imparted to such elastomer material.

Abstract: A molded component for the beam path of a radar apparatus with low radio transmission loss and improved hardness and abrasion resistance is provided. The molded component for the beam path of the radar apparatus comprises a base body 1 composed of a resin layer, and a bright decoration layer 2 disposed on the surface of the base body, the bright decoration layer being composed of tin and/or a tin alloy.

Abstract: A molded component for the beam path of a radar apparatus with a low radio transmission loss and improved hardness and abrasion resistance is provided. The molded component for the beam path of a radar apparatus comprises a base body 21 composed of a cyclic polyolefin resin layer, and a bright decoration layer 24 disposed on the surface of the base body. Preferably, by disposing a modified layer 22 treated by plasma ion etching and/or highly concentrated ozone water especially on the surface of the cyclic polyolefin resin, wettability on the surface is improved, thereby substantially improving the adhesion to the bright decoration layer.

Abstract: This invention provides a bright decorative molded article exhibiting a bright color, and particularly a gold color tone. Also, this invention provides a molded article located in the beam path of a radar device that allows only a small radio transmission loss. This bright decorative molded article comprises: an opaque resin substrate; a light-emitting device provided thereon; a transparent resin layer covering the substrate and the light-emitting device; a bright decorative layer (upper surface layer) covering the light-emitting device on the transparent resin layer; and a bright decorative layer (lower surface layer) provided on the surface of the substrate at a portion covered by the bright decorative layer (upper surface layer).

Abstract: A liner for a high pressure gas container includes a resin composition containing a polyphenylene sulfide resin and an olefin based resin. The resin composition has a methane gas permeability coefficient of 1.7×10?16 mol·m/m2·s·Pa or smaller at 40° C., and tensile elongation of 50% or greater after fracture at 23° C. A high pressure gas container having such a liner is also provided.

Abstract: A metallically gross layer decorative molded article for use in the beam path of a radar device has a luxurious metallic design similar to the color tone of a chrome plating and the like, does not hinder the transmission of radio wave, and has excellent adhesion with a substrate. The metallically gross layer decorative molded article includes a substrate comprised of a transparent resin layer, a tin and/or tin alloy layer provided on a back surface of the substrate, and a design paint layer provided on a back surface of the tin and/or tin alloy layer.

Abstract: A metallically gross layer decorative molded article for use in the beam path of a radar device has a luxurious metallic design similar to the color tone of a chrome plating and the like that does not hinder the transmission of radio wave. The metallically gross layer decorative molded article includes a substrate comprised of a transparent resin layer, a tin and/or tin alloy layer provided on a back surface of the substrate, and a decorative paint layer provided on a back surface of the tin and/or tin alloy layer.

Abstract: This invention provides a bright decorative molded article exhibiting a bright color, and particularly a gold color tone. Also, this invention provides a molded article located in the beam path of a radar device that allows only a small radio transmission loss. This bright decorative molded article comprises: an opaque resin substrate; a light-emitting device provided thereon; a transparent resin layer covering the substrate and the light-emitting device; a bright decorative layer (upper surface layer) covering the light-emitting device on the transparent resin layer; and a bright decorative layer (lower surface layer) provided on the surface of the substrate at a portion covered by the bright decorative layer (upper surface layer).

Abstract: A molded component for the beam path of a radar apparatus with a low radio transmission loss and improved hardness and abrasion resistance is provided. The molded component for the beam path of a radar apparatus comprises a base body 21 composed of a cyclic polyolefin resin layer, and a bright decoration layer 23 disposed on the surface of the base body. Preferably, by disposing a modified layer 22 treated by plasma ion etching and/or highly concentrated ozone water especially on the surface of the cyclic polyolefin resin, wettability on the surface is improved, thereby substantially improving the adhesion to the bright decoration layer.

Abstract: A molded component for the beam path of a radar apparatus with low radio transmission loss and improved hardness and abrasion resistance is provided. The molded component for the beam path of the radar apparatus comprises a base body 1 composed of a resin layer, and a bright decoration layer 2 disposed on the surface of the base body, the bright decoration layer being composed of tin and/or a tin alloy.

Abstract: A molded article located in the beam path of a radar device has only a slight amount of radio transmission loss and has a metallic color. The molded article comprises a substrate and a layer of ceramic material with which the external surface of the substrate is coated. The ceramic material includes nitride ceramics, oxide ceramics, carbide ceramics, and mixtures thereof. The ceramic material includes titanium nitride and/or aluminum nitride.

Abstract: A liner for a high pressure gas container includes a resin composition containing a polyphenylene sulfide resin and an olefin based resin. The resin composition has a methane gas permeability coefficient of 1.7×10−16 mol·m/m2·s·Pa or smaller at 40° C., and tensile elongation of 50% or greater after fracture at 23° C. A high pressure gas container having such a liner is also provided.