Abstract: The present invention relates to a tank for holding a cryogenic liquid. According to the present invention, there is provided a light and durable tank which is airtight even at cryogenic temperatures without generating cracks. The tank includes: a pressure-resistant layer having an inner shell and an outer shell; and an airtight resin layer on an inner surface of the inner shell, wherein the inner shell is comprised of a fiber-reinforced resin composite which can withstand temperatures above the melting point of the airtight resin layer, and the outer shell is comprised of another fiber-reinforced resin composite which can be cured at a temperature below the melting point of the airtight resin layer.

Abstract: A resin composition formed by mixing 99 to 70 weight % of specific whole aromatic polyesteramide liquid crystal resin (A) with 1 to 30 weight % of epoxy modified polyolefin-base resin (B) and by melting and kneading both of the resins, wherein the resin composition having a melt viscosity of 60 to 4000 Pa·s at a shear rate of 1000/second at a temperature which is 20° C. higher than the melting point and having a melt tension of 20 mN or more at a take-over speed of 14.8 m/minute, is melt within a temperature range of a melting point to the melting point +40° C., a parison (P) is formed by extruding it with an extrusion speed equal to or higher than 0.3 kg/minute and lower than 5 kg/minute, a pair of moldings placed so as to sandwich the parison (P) are closed at a predetermined mold closing pressure, and air is blown into the parison (P).

Abstract: A pressure-resistant container has a peripheral part of an inner shell opening attached to a mouth ring end surface inside of the container to cover the mouth ring. The pressure-resistant container has a cylindrical pressing member screwed into an inner peripheral surface of the mouth ring, an inner peripheral surface of the mouth ring extends between the inner shell and the pressing member, a first seal peripherally contacts the inner shell and the pressing member, a valve having a screw part screws into the mouth ring more outside of the container than the pressing member and an inner end part which is inserted in the hole part of the pressing member and a second seal to seal between an outer peripheral surface of the inner end part and an inner peripheral surface of the pressing member. A third seal is also provided.

Abstract: A resin composition formed by blending 10 to 25 weight parts of the epoxy modified polystyrene resin (B) to 100 weight parts of the liquid crystal polyester and/or the liquid crystal polyester amide (A) and by melt-kneading the two materials, wherein the resin composition having a melt viscosity of 60 to 4000 Pa·s at a shear rate of 1000/second at a temperature which is 20° C. higher than the melting point and having a melt tension of 20 mN or more at a take-over speed of 15 m/minute, is melt within a temperature range of a melting point to the melting point +40° C., a parison P is formed by extruding it with an extrusion speed equal to or higher than 0.3 kg/minute and lower than 5 kg/minute, a pair of moldings placed so as to sandwich the parison P are closed at a predetermined mold closing pressure, and air is blown into the parison P.

Abstract: In a pressure-resistant container 1, a peripheral part 3a of an opening 3d of an inner shell 3 is attached to an end surface of a mouth ring 4 at an inside of the container so as to cover thereof. Further, the pressure-resistant container 1 comprises a cylindrical pressing member 5 which is screwed into an inner peripheral surface 4b of the mount ring 4, an inner peripheral surface b (FIG. 3) of the mouth ring 4 which exposes between the inner shell 3 and the pressing member 5, a first seal (an O-ring 10 and an liquid sealant 11a) which peripherally contacts with the inner shell and the pressing member, a valve 6 having a screw part 6b which screws into an inner periphery 4c of the mouth ring at outside of the container than the pressing member and an inner end part 6c which is inserted in the hole part of the pressing member and a second seal (an O-ring 12) to seal between an outer peripheral surface of the inner end part 6c and an inner peripheral surface of the pressing member.

Abstract: The present invention relates to a tank for holding a cryogenic liquid. According to the present invention, there is provided a light and durable tank which is airtight even at cryogenic temperatures without generating cracks. The tank includes: a pressure-resistant layer having an inner shell and an outer shell; and an airtight resin layer on an inner surface of the inner shell, wherein the inner shell is comprised of a fiber-reinforced resin composite which can withstand temperatures above the melting point of the airtight resin layer, and the outer shell is comprised of another fiber-reinforced resin composite which can be cured at a temperature below the melting point of the airtight resin layer.

Abstract: The present invention relates to a tank for holding a cryogenic liquid. According to the present invention, there is provided a light and durable tank which is airtight even at cryogenic temperatures without generating cracks. The tank includes: a pressure-resistant layer having an inner shell and an outer shell; and an airtight resin layer on an inner surface of the inner shell, wherein the inner shell is comprised of a fiber-reinforced resin composite which can withstand temperatures above the melting point of the airtight resin layer, and the outer shell is comprised of another fiber-reinforced resin composite which can be cured at a temperature below the melting point of the airtight resin layer.

Abstract: A resin composition formed by mixing 99 to 70 weight % of specific whole aromatic polyesteramide liquid crystal resin (A) with 1 to 30 weight % of epoxy modified polyolefin-base resin (B) and by melting and kneading both of the resins, wherein the resin composition having a melt viscosity of 60 to 4000 Pa·s at a shear rate of 1000/second at a temperature which is 20° C. higher than the melting point and having a melt tension of 20 mN or more at a take-over speed of 14.8 m/minute, is melt within a temperature range of a melting point to the melting point +40° C., a parison (P) is formed by extruding it with an extrusion speed equal to or higher than 0.3 kg/minute and lower than 5 kg/minute, a pair of moldings placed so as to sandwich the parison (P) are closed at a predetermined mold closing pressure, and air is blown into the parison (P).

Abstract: A pressure container manufacturing method for manufacturing a pressure container by forming an outer shell made of a fiber reinforced composite material on a periphery of a liner, by: preparing a first fiber bundle which has a large diameter fiber bundle unimpregnated with a resin, and a second fiber bundle which has a small diameter fiber bundle and a thermoplastic resin covering the small diameter fiber bundle; forming a body on the periphery of the liner by braiding the first fiber bundle and the second fiber bundle with a braider; impregnating the first fiber bundle with the thermoplastic resin in the second fiber bundle which is heated and melted; and curing the thermoplastic resin to form the outer shell, wherein tension applied to the first fiber bundle is larger than tension applied to the second fiber bundle when forming the body and/or impregnating the thermoplastic resin.

Abstract: A resin composition formed by blending 10 to 25 weight parts of the epoxy modified polystyrene resin (B) to 100 weight parts of the liquid crystal polyester and/or the liquid crystal polyester amide (A) and by melt-kneading the two materials, wherein the resin composition having a melt viscosity of 60 to 4000 Pa·s at a shear rate of 1000/second at a temperature which is 20° C. higher than the melting point and having a melt tension of 20 mN or more at a take-over speed of 15 m/minute, is melt within a temperature range of a melting point to the melting point +40° C., a parison P is formed by extruding it with an extrusion speed equal to or higher than 0.3 kg/minute and lower than 5 kg/minute, a pair of moldings placed so as to sandwich the parison P are closed at a predetermined mold closing pressure, and air is blown into the parison P.

Abstract: The present invention relates to a tank for holding a cryogenic liquid. According to the present invention, there is provided a light and durable tank which is airtight even at cryogenic temperatures without generating cracks. The tank includes: a pressure-resistant layer having an inner shell and an outer shell; and an airtight resin layer on an inner surface of the inner shell, wherein the inner shell is comprised of a fiber-reinforced resin composite which can withstand temperatures above the melting point of the airtight resin layer, and the outer shell is comprised of another fiber-reinforced resin composite which can be cured at a temperature below the melting point of the airtight resin layer.

Abstract: A wholly aromatic polyester amide liquid crystal resin including repeating units of: (I) a 6-hydroxy-2-naphthoic acid residue: 1 to 15 mol %, (II) a 4-hydroxybenzoic acid residue: 40 to 70 mol %, (III) an aromatic diol residue: 5 to 28.5 mol %, (IV) a 4-aminophenol residue: 1 to 20 mol %, and (V) an aromatic dicarboxylic acid residue: 6 to 29.5 mol %, and having a melting point of 270° C. to 370° C., and having a melt viscosity of 60 Pa.s to 200 Pa.s at a shear rate of 1000/sec at a temperature higher by 10° C. to 20° C. than this melting point is molten at a temperature of the melting point +40° C., and extruded at a rate of 0.3 kg/min or more and less than 5 kg/min to form a parison. A pair of molds arranged with the parison interposed there between are closed under a prescribed mold closing pressure, so that air is blown into the interior of the parison.

Abstract: A pressure container manufacturing method for manufacturing a pressure container by forming an outer shell made of a fiber reinforced composite material on a periphery of a liner, has: preparing a first fiber bundle which has a large diameter fiber bundle unimpregnated with a resin, and a second fiber bundle which has a small diameter resin bundle and a thermoplastic resin covering the small diameter resin bundle; forming a body on the periphery of the liner by braiding the first fiber bundle and the second fiber bundle with a braider; impregnating the first fiber bundle with the thermoplastic resin in the second fiber bundle which is heated and melted; and curing the thermoplastic resin to form the outer shell, wherein a tension applied to the first fiber bundle is larger than a tension applied to the second fiber bundle when forming the body and/or impregnating the thermoplastic resin.

Abstract: The present invention relates to a process for the manufacture of hydrogen sulfide by reacting sulfur and hydrogen which comprises two hydrogenation reactions. The first hydrogenation reaction of the present invention comprises the steps of supplying hydrogen gas in a reactor containing sulfur at least a part of which is in a liquid phase at a temperature of not lower than 250.degree. C., and reacting the liquid sulfur and the hydrogen gas to produce a crude hydrogen sulfide effluent gas in the reactor. The sulfur vapor contained in the effluent gas is further reacted with fleshly added hydrogen gas in the second hydrogenation reaction to further concentrate the resulting hydrogen sulfide.

Abstract: A catalyst for the synthesis of methane by the hydrogenation of carbon monoxide and/or carbon dioxide, comprising alumina, nickel and barium or sodium; and a process for the preparation of said catalyst, comprising firstly having barium or sodium carried on alumina and secondly having nickel carried thereon.

Abstract: A process for converting solid wastes to gases suitable for use as a town gas comprising the steps of (1) pyrolyzing solid wastes at 550.degree. C. or higher in a pyrolyzing furnace to produce pyrolysis gases containing hydrogen, carbon monoxide and dioxide, methane and other hydrocarbons as well as chlorine-containing compounds, sulphur-containing compounds and other impurities, (2) washing the pyrolysis gases with an aqueous alkaline solution or the like, (3) refining the washed pyrolysis gases with the hydrogen contained in the pyrolysis gases, (4) reforming the refined pyrolysis gases by steam reforming, CO conversion and/or methanation and (5) separating the excess steam and carbonic acid gas from the reformed gases. In one embodiment, the washing (2) and refining (3) may be substituted by the high-temperature steam reforming of the pyrolysis gases in hot state supplied directly from the pyrolyzing furnace.