logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9988508 B1

PDFFull Text
Date of Patent:
Jun. 05, 2018

Filed:

Aug. 20, 2013

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

Applicant:

Mitsubishi Rayon Co., Ltd., Chiyoda-ku, JP;

Inventors:

Tomoko Ishimoto, Toyohashi, JP;

Manabu Kaneko, Toyohashi, JP;

Kenichi Watanabe, Toyohashi, JP;

Yasuhiro Fukuhara, Toyohashi, JP;

Sanae Kita, Toyohashi, JP;

Assignee:

MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Camie S Thompson

Int. Cl.
CPC ...
C08J 5/24 (2006.01); D06M 15/55 (2006.01); C08K 7/06 (2006.01); C08L 53/00 (2006.01); C08L 63/00 (2006.01); C08J 5/18 (2006.01); C08G 59/22 (2006.01); C08G 59/26 (2006.01); C08G 59/24 (2006.01); C08G 59/40 (2006.01);
U.S. Cl.
CPC ...
C08J 5/24 (2013.01); C08G 59/226 (2013.01); C08G 59/245 (2013.01); C08G 59/26 (2013.01); C08G 59/4021 (2013.01); C08J 5/18 (2013.01); C08K 7/06 (2013.01); C08L 53/00 (2013.01); C08L 63/00 (2013.01); D06M 15/55 (2013.01); C08J 2363/00 (2013.01); C08J 2453/00 (2013.01); C08J 2463/00 (2013.01); C08L 2205/02 (2013.01); Y10T 442/20 (2015.04);
Abstract

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.

Find Patent Forward Citations

Loading…