Mitsubishi Chemical Corporation

Mitsubishi Rayon Company, Limited

Sanae Kita

Manabu Kaneko

Yasuhiro Fukuhara

Kenichi Watanabe

Tomoko Ishimoto

Akihiro Ito

Satoshi Okamoto

Yukihiro Harada

Masayuki Sugiura

Tatsuhiro Kishikawa

Shinya Katou

Kenta Narumori

Tomoo Sano

An epoxy resin composition, the epoxy resin composition including components (A1) to (C1) described below, wherein the content of the component (B1) is 8 to 20 parts by mass relative to 100 parts by mass of the component (A1), and the content of the component (C1) is 12 to 110 parts by mass relative to 100 parts by mass of the component (A1): component (A1): an epoxy resin; component (B1): a boron trihalide-amine complex; and component (C1): rubber particles.

Epoxy resin composition

An epoxy-resin composition of the components (A), (B), (D) and (E), where component (A) is an epoxy resin having an oxazolidone-ring structure, (B) is a bisphenol bifunctional epoxy resin with a number-average molecular weight of at least 600 but no more than 1300, which does not have an oxazolidone-ring structure, (D) is a triblock copolymer, and (E) is a curing agent. A film made of the epoxy-resin composition, a prepreg and a fiber-reinforced plastic is also disclosed. The epoxy resin composition is capable of achieving both a processability of a prepreg at room temperature and a suppression of voids in the molded product. A fiber-reinforced plastic having excellent mechanical properties, especially excellent fracture toughness and heat tolerance, is also obtained by using the epoxy-resin composition.

Epoxy-resin composition and film, prepreg, and fiber-reinforced plastic using same

The present invention relates to an epoxy-resin composition comprising the following components (A), (B), (C) and (D), a film made of the epoxy resin composition, a prepreg and a fiber-reinforced plastic. The present invention can provide an epoxy-resin composition that cures at a low temperature in a short period of time. Also, the present invention can provide a fiber-reinforced plastic having excellent mechanical characteristics, especially excellent fracture toughness and heat tolerance, is made from the epoxy-resin composition. 

Epoxy-resin composition, and film, prepreg and fiber-reinforced plastic using the same

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Toyohashi, Japan

Sanae Kita