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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 10227476 B1

PDFFull Text
Date of Patent:
Mar. 12, 2019

Filed:

Nov. 29, 2012

Prepreg, fiber-reinforced composite material, method for producing same, and epoxy resin composition

Applicant:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Inventors:

Yasuhiro Fukuhara, Toyohashi, JP;

Hisaya Ushiyama, Toyohashi, JP;

Manabu Kaneko, Toyohashi, JP;

Assignee:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Attorney:

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

Primary Examiner:

Megan McCulley

Int. Cl.
CPC ...
C08K 7/06 (2006.01); C08J 5/24 (2006.01); B29D 7/01 (2006.01); C08L 63/00 (2006.01); B29C 70/02 (2006.01); C08G 59/30 (2006.01); C08G 59/50 (2006.01); B29C 70/46 (2006.01);
U.S. Cl.
CPC ...
C08K 7/06 (2013.01); B29C 70/021 (2013.01); B29D 7/01 (2013.01); C08G 59/302 (2013.01); C08G 59/5073 (2013.01); C08J 5/24 (2013.01); C08L 63/00 (2013.01); B29C 70/46 (2013.01); C08J 2363/00 (2013.01); C08L 2205/02 (2013.01); Y10T 442/2951 (2015.04);
Abstract

The present invention pertains to a prepreg containing reinforcing fibers and an epoxy resin composition. Said prepreg is sandwiched between dies preheated to 140.degree.C. and pressurized to MPa and held for five minutes at this temperature to obtain a cured article having a G'Tg of at least 150.degree.C. The present invention also pertains to a fiber-reinforced composite material and a method for producing same. According to this invention, it is possible to provide a prepreg which is well suited to press-molding, particularly to high-cycle press-molding. It is also possible to provide a fiber-reinforced composite material which can be heat-cured at a lower temperature and over a shorter time than conventional methods, with which it is possible to minimize excessive flow of resin in hot-press curing, and which is resistant to performance defects such as fiber meandering and defects in surface appearance. A method for producing the same can also be provided.

Find Patent Forward Citations

Fukuhara, Yasuhiro. (2019). Prepreg, fiber-reinforced composite material, method for producing same, and epoxy resin composition (U.S. Patent No. 10227476). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10227476

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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