Tdk Corporation

Tdk Electronics Company, Limited

Showa Denko Materials Co., Ltd.

Resonac Corporation

Hitachi Chemical Company, Ltd.

Sae Magnetics (h.k.) Limited

Keio University

Mitsubishi Pharma Corporation

Kazumasa Fukuda

Naoki Maruyama

Yoshitaka Takezawa

Tomoko Higashiuchi

Masanori Sakai

Yuka Yoshida

Mikio Matsuzaki

Joichiro Ezaki

Yoshitaka Sasaki

Atsushi Iijima

Yuki Nakamura

Haruyuki Morita

Hideyuki Katagi

Monjiro Momoi

Noboru Yamanaka

Yasumichi Tokuoka

Yuzuru Iwai

Yoshimi Kitahara

Makoto Yoshida

Jiro Yoshinari

Katsumichi Tagami

Toshiaki Izumi

Seitoku Saito

Takamitsu Tsuna

Shingo Tanaka

Keiichiro Nishimura

Lin Tian

Tomohiro Ikeda

Tetsuya Roppongi

Yuichi Kubota

Naoto Matono

Masatoshi Nakayama

Susumu Aoki

Hiroshi Kiyono

Keiji Koga

Akihiko Hosaka

Shunji Saruki

Tatsuya Harada

Tetsuya Kuwashima

Kenji Inage

Atsushi Kuwano

Hiroki Matsukuma

Takayoshi Kobuke

Tomoo Nishiyama

Akinori Nishizawa

Tsuneo Kagotani

Fumio Maruta

Fusao Hojo

Naoki Hara

Masahide Kohno

Jun Shouji

Seima Itami

Saiko Hosokawa

Masahiko Aoki

Yoko Hirakawa

Hiroe Umeki

Shigemitsu Yoshie

Yoshiro Saikawa

Yasuo Miyazaki

Koichiro Kumai

Kei Tougasaki

An epoxy resin includes a reaction product between: an epoxy compound having a mesogenic structure; and at least one selected from the group consisting of an aromatic hydroxycarboxylic acid having a carboxy group and a hydroxy group bonded to an aromatic ring and an aromatic dicarboxylic acid having two carboxy groups bonded to an aromatic group.

Epoxy resin, epoxy resin composition, epoxy resin cured product and composite material

(1) An epoxy resin, which is configured to form, in a cured product of the epoxy resin, a phase-separated structure that is formed from at least two phases, wherein at least one phase of the at least two phases includes a liquid crystal structure and (2) An epoxy resin, which is configured to form a phase-separated structure in a cured product, the cured product being obtained by curing the epoxy resin by increasing a temperature of the epoxy resin from an ambient temperature to a curing temperature at a rate of not greater than 20° C./minute.

Epoxy resin, epoxy resin composition, epoxy resin cured product and method of producing epoxy resin cured product, composite material, insulating member, electronic appliance, structural material, and vehicle

An epoxy resin includes an epoxy compound having a mesogenic structure, a cured product of the epoxy resin having a flexural modulus of 3.0 GPa or more at 23° C., a fracture toughness of 1.0 MPa·mor more, and a glass transition temperature of 150° C. or higher.

An epoxy resin, comprising an epoxy compound having two or more mesogenic structures, and having a loss tangent of 1 or more at 35° C. before curing.

Epoxy resin, epoxy resin composition, epoxy resin cured product, and composite material

A cured epoxy resin, which is a cured product of an epoxy compound having a mesogenic structure and a curing agent having a molecular chain or a flexible backbone with a molecular weight of 100 or more, the cured epoxy resin having a smectic structure; a cured epoxy resin, which is a cured product of an epoxy compound having a mesogenic structure and a curing agent having a molecular chain or a flexible backbone with a molecular weight of 100 or more, the cured epoxy resin not having a smectic structure; an epoxy resin composition, comprising an epoxy compound having a mesogenic structure and a curing agent having a molecular chain with a molecular weight of 100 or more; and an epoxy resin composition, comprising an epoxy compound having a mesogenic structure and a curing agent having a flexible backbone with a molecular weight of 100 or more.

Cured epoxy resin material, epoxy resin composition, molded article, and composite material

An epoxy resin includes a reaction product between an epoxy compound and a compound having a naphthalene structure and a functional group that is reactive with an epoxy group.

An epoxy resin, comprising an epoxy compound A that has at least two mesogenic structures and at least one phenylene group, and an epoxy compound B that has at least two mesogenic structures and at least one divalent biphenyl group.

An epoxy resin, comprising an epoxy compound having a mesogenic structure, the epoxy compound comprising a first epoxy compound having one biphenyl structure in a molecule and a second epoxy compound that is different from the first epoxy compound, at a mass ratio of the first epoxy compound to the second epoxy compound (first epoxy compound:second epoxy compound) of from 10:100 to 50:100.

An epoxy resin, comprising an epoxy compound having at least two mesogenic structures and at least one divalent biphenyl group.

An epoxy resin, comprising an epoxy compound having a mesogenic structure, and having a value of &#x3b7;'2/&#x3b7;&#x2032;1 equal to 3 or less, wherein &#x3b7;&#x2032;1 is an initial dynamic shear viscosity (Pa&#xb7;s) and &#x3b7;&#x2032;2 is a maximum value of dynamic shear viscosity (Pa&#xb7;s), in a measurement of dynamic shear viscosity.

An epoxy resin composition that comprises an epoxy resin and a curing agent, the epoxy resin comprising an epoxy compound that has, in one molecule, two or more structural units represented by the following Formula (I) and two or more epoxy groups, and the curing agent comprising a compound having two or more amino groups that are directly bound to an aromatic ring. 

Epoxy resin composition, cured product and composite material

An epoxy resin, comprising an epoxy compound, the epoxy compound comprising two or more structures represented by the following Formula (I) and at least one divalent biphenyl group: 

An epoxy resin, comprising a first epoxy compound having a mesogenic structure and a second epoxy compound having two or more mesogenic structures that are the same as the mesogenic structure of the first epoxy compound,

An epoxy resin, comprising an epoxy compound having a mesogen structure,

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

Growing community of inventors

Tokyo, Japan

Kazumasa Fukuda