Teijin Limited

Teijin Techno Products Limited

Tokyo Institute of Technology

Masayuki Chokai

Hiroaki Kuwahara

Shunichi Matsumura

Takuya Murakami

Anton Peter De Weijer

Susumu Honda

Hiroshi Sakurai

Seizo Miyata

Yuki Suzuki

Nobuaki Kido

Takeshi Naito

Yoshinori Ikeda

Toyoaki Ishiwata

Dennis Wilbers

Satoru Ohmori

Masa-aki Kakimoto

Kazuhiko Sato

Masanori Maeda

Yuta Nabae

Bunsow Nagasaka

An object of the present invention is to provide an insulation sheet having high thermal conductivity in the in-plane direction. The present invention provides an insulation sheet comprising insulating particles and a binder resin, wherein, for the entire cross-section of the sheet perpendicular to the in-plane direction, the insulation sheet contains 75 to 97% by area of the insulating particles, 3 to 25% by area of the binder resin, and 10% by area or less of the voids.

Insulation sheet

An object of the present invention is to provide a sizing agent composition that gives a carbon fiber from which a carbon fiber-reinforced composite material having excellent adhesion between a resin and the carbon fiber and having excellent mechanical properties can be formed. The sizing agent composition of the invention is a sizing agent composition comprising (A) a blocked isocyanate, and (B) a compound containing at least one polar group and at least one unsaturated group per molecule. In the invention, the mixing ratio (mass ratio) of the blocked isocyanate (A) and the compound (B) containing at least one polar group and at least one unsaturated group per molecule (A/B) is preferably 95/5 to 5/95. In the invention, the blocked isocyanate (A) is preferably a compound having an aliphatic skeleton.

Sizing agent composition, method for producing carbon fibers, and carbon fibers each having sizing agent applied thereonto

A particulate carbon catalyst in which particles having a particle diameter of 20 nm-1 &#x3bc;m account for a volume fraction of at least 45%, and the content of nitrogen atoms is 0.1-10 atomic % relative to the amount of carbon atoms.

Particulate carbon catalyst including nitrogen and metal and method for producing the same

This invention is to provide a dope that has excellent formability and can be formed into a fiber, a film, pulp-shaped particles and the like by a wet method. This invention is also to provide a process for the production of a fiber excellent in heat resistance, strength and elastic modulus. This invention provides a dope and a process for the production of a fiber from the dope, the dope including a polyamide and a basic solvent, the polyamide containing a recurring unit of the following formula (I), wherein Arrepresents at least one substituent selected from the group consisting of and having an inherent viscosity of 1.0 or more, the dope has a polyamide concentration of over 10% by weight but not more than 25% by weight and exhibits optical anisotropy at 50&#xb0; C.

Dope and process for the production of fiber from the dope

An object of this invention is to provide an electrolytic membrane excellent in ion conductivity and oxidation resistance, and this invention is directed to an electrolytic membrane formed of a polymer comprising at least one recurring unit selected from the group consisting of a recurring unit of the following formula (A), and a recurring unit of the following formula (B), and having a reduced viscosity, measured in a methanesulfonic acid solution having a concentration of 0.5 g/100 ml at 25&#xb0; C., of 0.05 to 200 dl/g, and a process for the production thereof.

Electrolytic membrane

Coated carbon nanotubes coated with 0.01-100 parts by weight of at least one type of aromatic condensation polymer selected from the group consisting of wholly aromatic polyamides, wholly aromatic polyesters, aromatic polyester carbonates, aromatic polycarbonates, semi-aromatic polyesters and wholly aromatic azoles, with respect to 100 parts by weight of the carbon nanotubes, as well as a process for their production. Aromatic condensation polymer compositions comprising 0.01-100 parts by weight of the coated carbon nanotubes and 100 parts by weight of an aromatic condensation polymer, and molded articles formed using them.

Carbon nanotube coated with aromatic condensation polymer

There are provided a rigid heterocyclic polymer comprising rigid recurring units such as units represented by the following formulae (a) and (b): wherein X is O, S or NH,a production process thereof, and fibers comprising the polymer.

Rigid heterocyclic polymer, production process thereof, and fibers comprising the polymer

The present invention relates to a wholly aromatic polyester carbonate and a process for its production. An aromatic dicarboxylic acid, an aromatic diol, and a diaryl carbonate are used as starting materials in specific molar ratios, a prepolymerization step, a crystallization step, and a solid-phase polymerization step are essential steps, and a compression molding step is an optional step. This makes it possible to produce with good productivity a wholly aromatic polyester carbonate that has low coloration and a high degree of polymerization.

Growing community of inventors

Iwakuni, Japan

Masayuki Chokai