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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 9957387 B1

PDFFull Text
Date of Patent:
May. 01, 2018

Filed:

Nov. 07, 2011

Epoxy resin composition for fiber reinforced composite material, prepreg, and fiber reinforced composite material

Applicants:

Nobuyuki Arai, Bellevue, WA (US);

Alfred P. Haro, Spanaway, WA (US);

Jonathan C. Hughes, Auburn, WA (US);

Norimitsu Natsume, Puyallup, WA (US);

Inventors:

Nobuyuki Arai, Bellevue, WA (US);

Alfred P. Haro, Spanaway, WA (US);

Jonathan C. Hughes, Auburn, WA (US);

Norimitsu Natsume, Puyallup, WA (US);

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Pillsbury Winthrop Shaw Pittman LLP

Primary Examiner:

Vincent A Tatesure

Int. Cl.
CPC ...
C08L 63/04 (2006.01); C08G 59/28 (2006.01); C08G 59/40 (2006.01); C08G 59/50 (2006.01); C08L 63/00 (2006.01); C08J 5/24 (2006.01); B32B 37/00 (2006.01); C08G 59/32 (2006.01);
U.S. Cl.
CPC ...
C08L 63/04 (2013.01); B32B 37/003 (2013.01); C08G 59/28 (2013.01); C08G 59/3227 (2013.01); C08G 59/4021 (2013.01); C08G 59/504 (2013.01); C08J 5/24 (2013.01); C08L 63/00 (2013.01); C08J 2363/00 (2013.01); Y10T 442/20 (2015.04);
Abstract

An epoxy resin composition having components (A), (B), (C), and (D), wherein the epoxy resin composition has a viscosity at 40° C. of about 1×10to about 1×10Pa·s, a curing start temperature of about 90 to about 110° C., and a minimum viscosity at the curing start temperature of about 2 to about 20 Pa·s, wherein the components (A), (B), (C), and (D) are as follows: (A) About 60 weight parts or more of a tetraglycidyl amine type epoxy resin per 100 weight parts of the epoxy resin blend; (B) Dicyandiamide; (C) Diaminodiphenyl sulfone and (D) Urea compound.

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