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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 11186692 B1

PDFFull Text
Date of Patent:
Nov. 30, 2021

Filed:

Apr. 14, 2020

Epoxy resin composition, fiber reinforced composite material, molded article and pressure vessel

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Ayumi Mori, Ehime, JP;

Noriyuki Hirano, Ehime, JP;

Masayuki Miyoshi, Ehime, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Michael J Feely

Int. Cl.
CPC ...
C08J 5/24 (2006.01); B32B 27/38 (2006.01); B32B 27/26 (2006.01); C08L 63/00 (2006.01); C08G 59/24 (2006.01); C08G 59/36 (2006.01); C08G 59/38 (2006.01); C08G 59/42 (2006.01); C08J 5/04 (2006.01); C08G 59/28 (2006.01); C08G 59/50 (2006.01); C08G 59/32 (2006.01); B01J 3/04 (2006.01);
U.S. Cl.
CPC ...
C08J 5/043 (2013.01); B01J 3/04 (2013.01); C08G 59/245 (2013.01); C08G 59/28 (2013.01); C08G 59/32 (2013.01); C08G 59/3218 (2013.01); C08G 59/3227 (2013.01); C08G 59/4215 (2013.01); C08G 59/4238 (2013.01); C08G 59/50 (2013.01); C08G 59/504 (2013.01); C08G 59/5026 (2013.01); C08G 59/5033 (2013.01); C08J 5/04 (2013.01); C08J 2363/00 (2013.01);
Abstract

One purpose of the present invention is to provide an epoxy resin composition which is for obtaining a fiber-reinforced composite material that combines heat resistance with tensile strength on a high level. The other purpose is to provide: a fiber-reinforced composite material obtained using this epoxy resin composition; and a molded article and a pressure vessel both containing the fiber-reinforced composite material. The present invention has the following configuration in order to achieve the above purposes. Namely, the epoxy resin composition includes the constituent element [A]: An epoxy resin including an aromatic ring and having a functionality of 2 or higher and the following constituent element [B]: An acid anhydride-based hardener, and is characterized in that a cured object obtained by curing the epoxy resin composition has a rubber-state modulus of 10 MPa or less when evaluated for dynamic viscoelasticity and the cured object has a glass transition temperature of 95° C. or higher.

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