Toray Industries, Inc.

Sadayuki Kobayashi

Shinichiro Ochiai

Keiichiro Nomura

Nobuhiro Morioka

Akiyoshi Tamai

Shota Suzuki

Hiroshi Takahashi

Sadanori Kumazawa

Noriyuki Hirano

Koji Yamauchi

Makiko Saito

Minoru Yoshida

Daisuke Sato

Hiroyuki Ohme

Jiro Kumaki

Masaru Akita

Akiko Tanaka

Tatsuya Takamoto

Kentaro Sano

Hideo Matsuoka

Motoyuki Suzuki

Akira Hirai

Kei Saitoh

Shin Hirata

Atsushi Ishio

Kohei Yamashita

Toru Nishimura

Yoshikazu Sato

Akinori Kanomata

Hiroshi Jinnai

Takashi Inoue

Takeshi Kanzawa

Fumie Sakida

Eri Takao

Kohei Koyanagi

Takumi Wakabayashi

A hollow molded article having a joining site where two or more split objects are welded by plastic welding and comes into contact with pressurized hydrogen, wherein an average spherulite size in a portion which is 500 &#x3bc;m deep inside from a surface of the hollow molded article is 20 &#x3bc;m or less, and a tensile strength of a test piece containing the joining site of the hollow molded article is 80% or more based on a tensile strength of a test piece not containing the joining site of the hollow molded article.

Hollow molded article and method of producing the same

There are provided a fiber reinforced thermoplastic resin molded article including a thermoplastic resin [A], carbon fibers [B] and a polyrotaxane [C], the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C] being included in amounts of 40 to 98 parts by weight, 1 to 40 parts by weight and 1 to 20 parts by weight, respectively, based on 100 parts by weight of the total content of the thermoplastic resin [A], the carbon fibers [B] and the polyrotaxane [C], wherein the carbon fibers [B] included in the molded article have a weight-average fiber length [Lw] in a range of 0.5 to 20 mm, and a ratio ([C]/[B]) of the content of the polyrotaxane [C] to that of the carbon fibers [B] is 0.04 or more and 0.5 or less; and a thermoplastic resin molded article which has excellent impact strength and also has excellent conductivity.

Fiber reinforced thermoplastic resin molded article and fiber reinforced thermoplastic resin molding material

A polyamide resin composition for an extrusion-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260&#xb0; C. and a take-up speed at strand break of 30 m/min or more when measured at 260&#xb0; C.

Polyamide resin composition for extrusion molded products exposed to high-pressure hydrogen, and extrusion molded product

A polyamide resin composition for a blow-molded article exposed to high-pressure hydrogen gas contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260&#xb0; C. and a take-up speed at strand break of 50 m/min or more when measured at 260&#xb0; C.

Polyamide resin composition for blow-molded products exposed to high-pressure hydrogen, and blow-molded product

There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.

Epoxy resin composition, resin cured product, fiber-reinforced composite material, and prepreg

Disclosed is a resin composition including a thermoplastic resin (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain having a reactive functional group at the end, which are mixed together, the resin composition containing a fibrous filler (C) in the amount of 1 to 200 parts by weight relative to 100 parts by weight of the total amount of the thermoplastic resin (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.

Resin composition and molded article thereof

The present invention aims to provide an inorganic substance-laminated sheet that can be used suitably for applications that require high gas barrier properties. The inorganic substance-laminated sheet includes a sheet having a dispersed structure with a structural period of 0.001 &#x3bc;m to 100 &#x3bc;m on at least one surface and an inorganic substance layer covering the surface having the dispersed structure.

Sheet, inorganic-substance-laminated sheet and electronic device using same

Disclosed is a resin composition including at least a polyamide (A) and a polyrotaxane (B) whose cyclic molecule is modified with a graft chain, which are mixed together, wherein 80 parts by weight or more and 99.9 parts by weight or less of the polyamide (A) and 0.1 part by weight or more and 20 parts by weight or less of the polyrotaxane (B) are mixed together relative to 100 parts by weight of the total amount of the polyamide (A) and the polyrotaxane (B). To provide a resin composition capable of affording a molded article having excellent balance between rigidity and toughness.

A polyamide resin composition for a molded article exposed to high-pressure hydrogen contains a polyamide 6 resin (A) and a polyamide resin (B) having a melting point, as determined by DSC, that is not higher than a melting point of the polyamide 6 resin (A) +20&#xb0; C. and a cooling crystallization temperature, as determined by DSC, that is higher than a cooling crystallization temperature of the polyamide 6 resin (A), the polyamide resin (B) present in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the polyamide 6 resin (A). The polyamide resin composition can provide a molded article having excellent weld properties and is less likely to suffer failure points despite repeated charging and discharging of high-pressure hydrogen.

Polyamide resin composition for molded article exposed to high-pressure hydrogen and molded article made of the same

An epoxy resin composition according to the present invention comprises an epoxy compound (A), a block copolymer (B) and a curing agent (C), wherein the block copolymer (B) is composed of a polymer block (a) comprising a (meth)acrylic polymer and a polymer block (b) comprising an acrylic polymer that is different from the polymer block (a), said epoxy resin composition having such a property that a cured resin product produced by curing the epoxy resin composition forms a microphase-separated structure. A cured product of the epoxy resin composition forms a highly ordered phase structure, and therefore has excellent toughness and stiffness.

Epoxy resin composition, prepreg, and fiber-reinforced composite material

A process of producing a polymer alloy includes melt-kneading at least two incompatible crystalline resins in a supercooled state by chaotic mixing using a twin-screw extruder. A polymer alloy obtained by melt-kneading at least two incompatible crystalline resins has a dispersed structure that particles dispersed in the polymer alloy have an average particle size of 0.001 to 1 &#x3bc;m, wherein in scattering measurement, (a) a peak half-width in a spectrum obtained by plotting scattering intensity against the wavenumber of scattered light and (b) a maximum wavenumber of the peak satisfy: 0&#x3c;(a)/(b)&#x2266;1.5.

Process for producing polymer alloy, polymer alloy, and molded article

The present invention provides a porous material which has continuous pores and comprises a polymethyl methacrylate as a main component, wherein the continuous pores have a diameter of 0.001 &#x3bc;m to 500 &#x3bc;m and at least one surface of the porous material has a porosity of 10% to 80%; a separation membrane composed of the same; an adsorbent composed of the same; and a method production of the same. A porous material whose surface porosity and pore diameter are each controlled in a specific range can be obtained. The porous material has a fine and uniform porous structure in which the pore diameter can be controlled in the order of nanometers to micrometers; therefore, it can be advantageously used as a separation membrane such as a blood component separation membrane of an artificial kidney or the like or as an adsorbent.

Porous body and production method therefor

A polylactic acid stereocomplex has a crystal melting peak temperature of 215&#xb0; C. or more, wherein the crystal melting peak is a single peak and has a peak half width of 12&#xb0; C. or less, and a crystal melting enthalpy of 60 J/g or more as measured by differential scanning calorimetry. The polylactic acid stereocomplex has a high melting point, good heat resistance, and a high level of mechanical properties and chemical resistance. The method for producing a polylactic acid stereocomplex includes chaotic mixing of 30 to 70 parts by weight of (A) poly-L-lactic acid and 30 to 70 parts by weight of (B) poly-D-lactic acid based on 100 parts by weight of the total of (A) poly-L-lactic acid and (B) poly-D-lactic acid.

Polylactic acid stereocomplex, method for production thereof, and nucleating agent for polylactic acid resin

At least two or more components of thermoplastic resins are compounded by chaotic mixing to form a polymer alloy with a sophisticatedly controlled dispersed phase structure. In the polymer alloy, a dispersed phase having a non-periodic structure with a correlation length of 0.001 &#x3bc;m to 0.5 &#x3bc;m and having a compactness (C) of 0.05&#x2266;(C)&#x2266;0.8, wherein the compactness (C) can form a molded product that also has transparency while maintaining the original good heat resistance or mechanical properties of the resins blended.

Polymer alloy, process for producing same, and molded article

A resin composition is described that is excellent in strength, impact resistance, heat resistance and moldability, while further allowing for a reduction in the amount of COneeded for its production. The resin composition includes a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), wherein the compatibilizer is preferably at least one species selected from: (C-1) a methyl methacrylate polymer; (C-2) a vinyl-based polymer to which an epoxy unit or acid anhydride unit is copolymerized; (C-3) a graft polymer in which a methyl methacrylate unit is grafted to a rubbery polymer; and (C-4) a block copolymer having a polylactide segment and a vinyl-based polymer segment.

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Nagoya, Japan

Sadayuki Kobayashi