Hitachi Chemical Company, Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Showa Denko Materials Co., Ltd.

Fusao Hojo

Yoshitaka Takezawa

Shingo Tanaka

Naoki Maruyama

Kazumasa Fukuda

Toshiaki Ishii

Nobutake Tsuyuno

Akira Matsushita

Junpei Kusukawa

Tomoko Higashiuchi

Hiroyuki Kagawa

A production method for a glassy liquid-crystalline epoxy resin, comprising a process of cooling a liquid-crystalline epoxy resin to cause transition into a glassy state.

Production methods for glassy liquid-crystalline epoxy resin and glassy liquid-crystalline epoxy resin composition, storage methods for liquid-crystalline epoxy resin and liquid-crystalline epoxy resin composition, glassy liquid-crystalline epoxy resin and glassy liquid-crystalline epoxy resin composition, liquid-crystalline epoxy resin and liquid-crystalline epoxy resin composition, and production method for cured epoxy resin

Provided are an epoxy resin composition including hexagonal boron nitride particles having an aspect ratio of 2 or more, a liquid crystalline epoxy monomer, and a curing agent, and the epoxy resin composition being capable of forming a resin matrix having a smectic domain by reacting the liquid crystalline epoxy monomer with the curing agent, and a thermally-conductive material precursor, a B-stage sheet, a prepreg, a heat dissipation material, a laminate, a metal substrate, and a printed circuit board, which use the epoxy resin composition.

Epoxy resin composition, thermally-conductive material precursor, B-stage sheet, prepreg, heat dissipation material, laminate, metal substrate, and printed circuit board

An object of the present invention is to provide a power module capable of realizing a superior heat radiation property while satisfying a high insulation property. A power module according to the present invention includes: a conductor plate to which a switching element is connected; a heat radiation plate which is disposed to face the conductor plate; an insulating member which is disposed between the conductor plate and the heat radiation plate; and a conductive intermediate conductor which is disposed in the insulating member in a state of being electrically insulated from the conductor plate and the heat radiation plate, wherein the intermediate conductor has a communication region which communicates between the insulating member disposed on the side of the conductor plate with respect to the intermediate conductor and the insulating member disposed on the side of the heat radiation plate with respect to the intermediate conductor.

Power module

A composite particle is constituted to include: an aluminum nitride particle; a first coating layer that contains &#x3b1;-alumina and coats at least a part of a region of a surface of the aluminum nitride particle; and a second coating layer that contains organic matter and coats a region other than the first coating layer of the surface of the aluminum nitride particle.

Composite particle, method for producing the same, and resin composition

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Tokyo, Japan

Fusao Hojo