Toray Industries, Inc.

Natureworks LLC

Mitsushige Hamaguchi

Hideo Matsuoka

Masato Honma

Kazuhiko Kobayashi

Hideyuki Umetsu

Akira Todo

Kohei Miyamoto

Takafumi Suzuki

Taku Koda

Naokichi Imai

Takashi Fujioka

Tomohiro Takehara

Yuichiro Sento

Makiko Saito

Toru Yamanaka

Makito Yokoe

Hiroyuki Ome

Shin Hirata

Toru Nishimura

Nobuhiro Morioka

Toru Takahashi

Yoshitake Takahashi

Kazuki Yoshihiro

Koji Tachikawa

Takuma Naotsuka

Akito Konishi

A fiber-reinforced polyamide resin composition molded article is characterized by 5 to 50 parts by weight of reinforcing fibers, 40 to 94.9 parts by weight of a polyamide resin composition, and 0.1 to 10 parts by weight of an ammonium salt composed of ammonia and an aliphatic dicarboxylic acid having 6 to 12 carbon atoms, and which is also characterized in that: a weight average fiber length of the reinforcing fibers is 0.4 to 7 mm; the polyamide resin composition comprises a polyamide resin, a second resin having a reactive functional group, and a compound produced by a reaction of the resin and the second resin; and the second resin is dispersed in a form of particles with a number average particle diameter of 10 to 1,000 nm.

Fiber-reinforced polyamide resin composition molded article

The invention aims to provide an electronic device housing that can maintain the antenna performance without deteriorating the radio communication performance, ensures uniform characteristics as one molded electronic device housing in spite of consisting of a plurality of members, and show excellent features in terms of the degree of warpage and dimensional accuracy as well as small deformation in high temperature environments and high mass productivity. The electronic device housing consists mainly of a fiber reinforcing member (a) and a fiber reinforcing member (b), the fiber reinforcing member (a) containing a resin (a1) and a fiber (a2), the fiber reinforcing member (b) containing a resin (b1) and a fiber (b2), the fiber reinforcing member (a) and the fiber reinforcing member (b) being joined directly without the existence of another layer at the joining face between the fiber reinforcing member (a) and the fiber reinforcing member (b), and the fiber reinforcing member (a) and the fiber reinforcing member (b) fulfilling a specific relation in terms of linear expansion coefficient and/or bending elastic modulus.

Electronic device housing

The present invention aims to provide an electronic device housing that is able to maintain the antenna performance without deteriorating the radio communication performance, excellent in terms of the degree of warpage and dimensional accuracy, and mass productivity. The electronic device housing includes a fiber reinforcing member (a) and a fiber reinforcing member (b), wherein the fiber reinforcing member (a) contains a resin (a1) and a fiber (a2), the fiber (a2) being in the form of discontinuous fibers; the fiber reinforcing member (b) contains a resin (b1) and a fiber (b2), the fiber (b2) being in the form of continuous fibers; the projected area of the fiber reinforcing member (a) accounts for 60% or more of the total projected area, which accounts for 100%, of the housing projected onto the plane of the top face; and requirements (i) and/or (ii) given below are met: (i) the resin (a1) is a thermoplastic resin having a melting point of more than 265&#xb0; C., and (ii) the resin (a1) is a thermoplastic resin having a water absorption rate of 0.4% or less.

Electronic device housing and method for producing same

The following configuration is adopted for the purpose of solving reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enabling free design such as thin wall molding or complex shape molding of the injection molding body. That is, there is provided

Integrally molded body

An imaging table to be supported in a cantilever state on an X-ray imaging apparatus, includes a planar body including an opening portion in a surface to be connected to the apparatus, and a coupling member to be connected to the apparatus. The planar body includes a first member forming a top surface including an X-ray irradiation surface, and a second member forming a bottom surface opposed to the X-ray irradiation surface and a standing wall portion erectly provided on an outer circumference of the bottom surface. The second member is bonded to the first member in the standing wall portion. The first member and the coupling member are bonded to each other. The first member has an aluminum-equivalent X-ray transmission dose of 0.5 mmAL or less at any point in the X-ray irradiation surface.

Imaging table and manufacturing method therefor, mammography apparatus imaging table and manufacturing method therefor, and mammography apparatus

An imaging table for a mammography apparatus is formed by a planar body and is to be supported in a cantilever state on a body of the mammography apparatus. At least an X-ray irradiation surface in the planar body has at least one of the following configurations (1) and (2): (1) the X-ray irradiation surface is formed by a carbon fiber composite material including a unidirectional carbon fiber composite material containing carbon fibers and a matrix resin, the carbon fibers being aligned in one direction; and (2) the X-ray irradiation surface is formed by a skin material and a resin sheet, the skin material including a carbon fiber composite material containing continuous fibers and a matrix resin, the resin sheet being disposed on an inner layer side from the skin material.

Imaging table, mammography apparatus imaging table and manufacturing method therefor, and mammography apparatus

In order to solve reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enable free design such as thin wall molding or complex shape molding of the injection molding body, there is provided an integrally molded body in which a substrate for reinforcement (a) having a discontinuous fiber (a1) and a resin (a2) and an injection molding body (b) having a discontinuous fiber (b1) and a resin (b2) are integrated, in which the substrate for reinforcement (a) has a difference in an orientation angle of the discontinuous fiber (a1) in each of regions obtained by dividing a major axis direction of the substrate for reinforcement (a) into 10 equal parts of within 10&#xb0;, and the substrate for reinforcement (a) covers a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b).

Integrally molded body and method for producing the same

The present invention is a method for producing a liquid crystalline polyester, which comprises reacting an aromatic hydroxycarboxylic acid, a diol containing 70 mol % or more of an aromatic diol having a structural unit (I) as shown below and an aromatic dicarboxylic acid with one another in the presence of an acylating agent and an aliphatic sulfonic acid represented by formula (A) shown below. (wherein Ar represents a bivalent aromatic group which is an aromatic hydrocarbon group and has a molecular weight of less than 200) Formula (A) R&#x2014;SOH (wherein R represents an alkyl group having 1 to 12 carbon atoms) According to the present invention, a liquid crystalline polyester, which can be molded into an article having excellent tensile strength and excellent creep properties and from which a gas is generated in a reduced amount, can be produced with high efficiency.

Method for producing liquid crystalline polyester, and liquid crystalline polyester

A thermoplastic resin composition includes 100 parts by weight of a thermoplastic resin (a) that is a liquid crystalline polyester and/or a polyphenylene sulfide; and 0.001 to 10 parts by weight of a metal complex (b) having a monodentate or a bidentate ligand; and at least one metal and/or its salt selected from the group consisting of copper, zinc, nickel, manganese, cobalt, chromium and tin.

Thermoplastic resin composition and its molded product

A liquid crystalline polyester having structural units (I), (II), (III), (IV) and (V), wherein 

Liquid crystalline polyester and production method of the same

A method for producing a crystallized polyester comprises the crystallization step of applying a shear and/or a pressure to a polyester selected from an aliphatic polyester and a polyalkylene terephthalate at a temperature of (Tm&#x2212;70&#xb0; C.) to (Tm+20&#xb0; C.), where Tm is a melting point of the polyester, thereby converting the polyester into a state having a crystallinity of 10% or more and fluidity.

Method for producing crystallized polyester

A wholly aromatic liquid crystalline polyester contains 2.0 to 15.0 mole percent of a hydroquinone-derived structural unit relative to a total amount of structural units. The wholly aromatic liquid crystalline polyester has sum of an amount (a) of terminal hydroxyl group and an amount (b) of terminal acetyl group in a range of 50 to 350 equivalents/(g&#xb7;10), and has a ratio [(a)+(b)]/(c) of the sum of the amount (a) of terminal hydroxyl group and the amount (b) of terminal acetyl group to an amount (c) of terminal carboxyl group in a range of 1.05 to 2.00.

Wholly aromatic liquid crystalline polyester and method of producing the same

The present invention is directed to a hyperbranched-polyester comprising at least one kind of a structural unit selected from an aromatic oxycarbonyl unit (P), aromatic and/or aliphatic dioxy units (Q), and an aromatic dicarboxy unit (R), and a trifunctional or higher polyfunctional organic residue (B), wherein the content of B is within a range from 7.5 to 50 mol % based on entire monomers constituting the hyperbranched-polyester. The present invention provides a hyperbranched-polyester which can remarkably improve thin-wall flowability, stiffness and gas barrier property by blending with a thermoplastic resin, and a thermoplastic resin composition blended with the same.

Dendritic polymer, method for producing the same, and thermoplastic resin composition

This invention is a polyester resin composition comprising 100 parts by weight of a resin composition consisting of 60 to 95 wt % of (a) a polyester resin and 5 to 40 wt % of (b) an olefin-based resin, and 0.5 to 30 parts by weight of (c) one or more resins selected from polyphenylene sulfide resins and liquid crystal resins, wherein said olefin-based resin (b) is composed of (b-1) a functional group-containing olefin copolymer having at least one kind of functional groups selected from carboxylic acid groups, carboxylic anhydride groups, carboxylic ester groups, metal carboxylate groups and epoxy groups and (b-2) an ethylene/&#x3b1;-olefin copolymer obtained by copolymerizing ethylene and an a-olefin with 3 to 20 carbon atoms; and the polyester resin (a) forms a continuous phase, while the olefin-based resin (b) is dispersed as particles with an average particle size of 0.01 to 2 &#x3bc;m in the composition. This invention provides a polyester resin composition having excellent flexibility and impact resistance in a low-temperature atmosphere, also having excellent flowability and chemicals resistance, and suitable for injection molding.

Polyester resin composition

Provided is a thermoplastic resin structure formed of a resin composition that comprises substantially (a) from 5 to 80% by volume of a polyamide resin and (b) from 20 to 95% by volume of a polyphenylene sulfide resin, which is characterized in that, in morphology therein seen through electronic microscopy, the polyphenylene sulfide resin (b) forms a matrix phase (continuous phase) and the polyamide resin (a) forms a disperse phase. The gives plastic containers, tubes and their Attached parts having good barrier properties, strength, durability and workability.

Growing community of inventors

Nagoya, Japan

Mitsushige Hamaguchi