Denki Kagaku Kogyo Kabushiki Kaisha

Denka Company Limited

Nec Corporation

Oki Electric Industry Co., Ltd.

Tohoku University

Toru Arai

Toshiaki Otsu

Shigeru Suzuki

Masataka Nakajima

Akio Okamoto

Hitoshi Kaneko

Akira Miyama

Ayumu Tsukamoto

Akihiko Nakamura

Shota Yamamoto

Takeshi Oda

Yoko Horikoshi

Azusa Yagi

Hiroaki Nishimura

Masaru Hasegawa

Tometomo Uchida

Yukiko Nishitoba

Takashi Sasaki

Jun Watanabe

Jun Yoshida

Tatsuya Nagai

Takashi Domoto

Hideki Toya

Yoshihiko Tsujimura

Tomoo Saito

Kunihiko Konishi

Eri Sasaki

Takako Tanigawa

Atsushi Masamune

Masaya Umeyama

Suguru Onuki

Hosaku Sato

Ayusawa Kazutoshi

Yoko Tamura

Megumi Sudo

Takeshi Kanno

Yularo Arata

Shingo Hanazato

Takanori Naoe

A composition for temporary bonding, includes: (A) a (meth)acrylate having the following (A-1) and (A-2): (A-1) a monofunctional (meth)acrylate whose side chain is an alkyl group having 18 or more carbon atoms and homopolymer has a Tg of −100° C. to 60° C., and (A-2) a polyfunctional (meth)acrylate; (B) a polyisobutene homopolymer and/or a polyisobutene copolymer; and (C) a photo radical polymerization initiator.

Composition

A composition comprises: a resin component including an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying all the following conditions (1) to (4): (1) a number average molecular weight of the copolymer is 500 or more and 100000 or less; (2) the aromatic vinyl compound monomer is an aromatic vinyl compound having 8 or more and 20 or less carbon atoms, and a content of a unit of the aromatic vinyl compound monomer is 0 mass % or more and 70 mass % or less; (3) the aromatic polyene is one or more selected from polyenes having 5 or more and 20 or less carbon atoms and having a plurality of vinyl groups and/or vinylene groups in the molecule, and a content of the vinyl groups and/or the vinylene groups derived from the unit of the aromatic polyene is 1.5 pieces or more and less than 20 pieces per number average molecular weight; and (4) the olefin is one or more selected from olefins having 2 or more and 20 or less carbon atoms, and a total of units of the olefin monomer, the aromatic vinyl compound monomer, and the aromatic polyene monomer is 100 mass %; and a surface-treated silica. The volume ratio between the resin component and the silica is in the range of 98 to 15:2 to 85. A cured product of the composition has a value of the dielectric tangent obtained by resonator method at a measurement frequency of 10 GHz and/or a measurement frequency range of 25 GHz to 40 GHz of 1.2×10or less and a storage elastic modulus at 250° C. in the range of 10 MPa or more and 10 GPa or less.

Composition and cured product thereof

A method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials, provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 μm or less, and/or a median diameter D50 by volume of 1 μm or less.

Method for producing carbon nanofiber composite and carbon nanofiber composite

A curable composition includes an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1) to (4) and an additive resin, which is at least one of a hydrocarbon-based elastomer, polyphenylene ether, olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer, and aromatic polyene-based resin. (1) The number average molecular weight of the copolymer is 5000 to 100000. (2) The aromatic vinyl compound monomer has 8 to 20 carbon atoms, and the content of the unit of the monomer is 0 to 70 mass %. (3) The aromatic polyene is selected from polyenes having 5 to 20 carbon atoms and a plurality of vinyl and/or vinylene groups in the molecule, and the content of the groups is 1.5 to 20 pieces per number average molecular weight. (4) The olefin is selected from olefins having 2 to 20 carbon atoms, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.

Curable composition and cured product thereof

A laminate has an olefin-aromatic vinyl compound-aromatic polyene copolymer and a metal foil. The number average molecular copolymer weight is between 5000 and 100000; the aromatic vinyl compound monomer is aromatic vinyl compound having between 8 and 20 carbon atoms, and the aromatic vinyl compound monomer unit content is between 10 and 60 mass %; the aromatic polyene is selected having between 5 and 20 carbon atoms and vinyl and/or vinylene groups in the molecule, the content derived from the aromatic polyene unit is between 1.5 and 20 pieces per number average molecular weight; and the olefin is selected having between 2 and 20 carbon atoms, being ethylene alone, or having a mass ratio of α-olefin monomer components other than ethylene to an ethylene monomer component contained in the olefin, of 1/7 or less, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.

Copolymer and laminate containing same

Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.

Ulcer model used to practice procedure including hemorrhage arrest

[Problem] To provide a softer resin material that can be highly filled with an oil and that has almost no seepage (bleed-out) of oil. Additionally, to provide a biological model that is easy to handle and that has a softness and mechanical properties closer to those of organs and a texture close to that of organs. [Solution] A resin composition containing 100 parts by mass of component (A), a hydrogenated block copolymer having an MFR (measured at a temperature of 230&#xb0; C. and with a load of 2.16 kg) of 1 g/10 min or less; more than 1000 parts by mass and at most 2000 parts by mass of component (B), an oil; and at least 10 parts by mass and at most 120 parts by mass of component (C), a polyolefin resin having a specific surface area of 0.01 to 30 m/g.

Resin composition and biological model

An object of the present invention is to provide a method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials. The present invention also provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 &#x3bc;m or less, and/or a median diameter D50 by volume of 1 &#x3bc;m or less.

[Problem] To provide a thermoplastic resin composition for use in an organ model, wherein said composition has a softness closer to that of an organ, a high mechanical strength, and a texture close to an organ, exhibits excellent durability, and can be handled easily. [Solution] A resin composition for an organ model, said composition containing, as component (A), 100 parts by mass of a hydrogenated block copolymer having an MFR (measured at a temperature of 230&#xb0; C. and a load of 2.16 kg) of 1 g/10 min. or less, and an oil as component (B). Moreover, the composition may also contain a cross copolymer as component (C), a polypropylene resin as component (D), and a filler as component (E).

Resin composition for organ models

A conductive composition for electrode is provided that is excellent in conductivity and dispersibility. Further, an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics are provided that use this conductive composition. A conductive composition for electrode, including: carbon nanofiber with a median diameter D50 value by volume from 0.1 to 8 pm; an active material; and a binder enables production of an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics.

Conductive composition for electrode, electrode using same, and lithium ion secondary battery

By using CNF excellent in dispersibility, conductivity, and crystallinity, a conductive polymer material having high conductivity even with a low CNF content and a shaped article thereof and a conductive polymer material with a less CNF content for same conductivity and a shaped article thereof are provided. A conductive polymer material with high conductivity is produced by using carbon nanofiber with a median diameter D50 value from 0.1 to 8 &#x3bc;m, powder resistivity of 0.03 &#x3a9;cm or less measured under a load of 9.8 MPa, and D/G from 0.5 to 1.3.

Conductive polymer material and molded article using same

The present invention addresses the problem of providing a cross-copolymer having excellent flexibility, heat resistance, cold resistance and mechanical properties. The present invention also addresses the problem of providing a resin composition which is prepared using the cross-copolymer, has excellent compatibility with polyolefin resins and aromatic resins, and has excellent flexibility, heat resistance and cold resistance. The problem can be solved by a cross-copolymer produced by a polymerization process comprising a coordination polymerization step and a crossing step, wherein the coordination polymerization step comprises copolymerizing an ethylene monomer, a specific olefin monomer and an aromatic polyene together using a single site coordination polymerization catalyst to synthesize an ethylene-olefin-aromatic polyene copolymer that meets a specific requirement, and the crossing step comprises carrying out a polymerization in the co-presence of the ethylene-olefin-aromatic polyene copolymer and an aromatic vinyl compound monomer using an anionic polymerization initiator or a radical polymerization initiator.

Cross-copolymer, and resin composition

Provided is a method for producing carbon nanofibers having excellent conductivity, crystallinity and dispersibility. A method for producing carbon nanofibers, which uses an activated species mainly composed of cobalt as a catalyst, while using carbon monoxide as a carbon source. The catalyst is obtained by having a carrier, which is composed of an oxide having a specific surface area of 0.01-5 m/g and containing magnesium, support 3-90% by mass of the activated species. By controlling the reaction temperature, the carbon monoxide partial pressure and the gas flow rate of the carbon monoxide, CNF having more excellent conductivity, crystallinity and dispersibility can be produced, thereby obtaining carbon nanofibers having excellent conductivity, crystallinity and dispersibility.

Method for producing carbon nanofibers

A manufacturing method of carbon nanofibers at a high activity is provided. Further, carbon nanofibers produced by the manufacturing method and being excellent in electric conductivity, crystallinity and dispersibility is provided. By a manufacturing method of carbon nanofibers in which an active species including cobalt as a chief component is employed as a catalyst and carbon monoxide is used as a carbon source, wherein said catalyst has 3 to 150 mass % of said active species carried on a carrier composed of a magnesium-containing oxide having a specific surface area of 0.01 to 5 m/g, and a reaction temperature, partial pressure of carbon monoxide and a flow rate of raw material gas is controlled, CNFs that are excellent in electric conductivity, crystallinity and dispersibility can be manufactured at high activity, so that carbon nanofibers that is excellent in electric conductivity, crystallinity and dispersibility is obtained.

Production method for carbon nanofibers, and carbon nanofibers

Provided are a multilayer sheet superior in weather resistance, heat resistance, and moisture proofness and also favorable in interlayer adhesiveness, and a back sheet for solar cells and a solar cell module prepared by using the same. The multilayer sheetis prepared by laminating a polyolefin-based resin layerhaving a melt flow rate, as determined by the method A specified in JIS K7210, of 0.5 to 25 g/10 minutes at 230&#xb0; C. under a load of 2.16 kg and a polyvinylidene fluoride-based resin layerhaving a melt flow rate, as determined by the method A specified in JIS K7210, of 0.5 to 25 g/10 minutes at 230&#xb0; C. under a load of 2.16 kg, via an adhesion resin layerof a conjugated diene-based polymer, a conjugated diene-based copolymer, or the hydride thereof having a melt flow rate, as determined by the method A specified in JIS K7210, of 0.1 to 50 g/10 minutes at 230&#xb0; C. under a load of 2.16 kg. A back sheet prepared by using the multilayer sheetis layered on a sealing material of a solar cell, to give a solar cell module.

Growing community of inventors

Machida, Japan

Toru Arai