Invention Grant
- Patent Title: Epoxy resin composition for fiber reinforced composite material, prepreg, and fiber reinforced composite material
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Application No.: US13881790Application Date: 2011-11-07
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Publication No.: US09957387B2Publication Date: 2018-05-01
- Inventor: Nobuyuki Arai , Alfred P. Haro , Jonathan C. Hughes , Norimitsu Natsume
- Applicant: Nobuyuki Arai , Alfred P. Haro , Jonathan C. Hughes , Norimitsu Natsume
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- International Application: PCT/US2011/059610 WO 20111107
- International Announcement: WO2012/064662 WO 20120518
- Main IPC: C08L63/04
- IPC: C08L63/04 ; C08G59/28 ; C08G59/40 ; C08G59/50 ; C08L63/00 ; C08J5/24 ; B32B37/00 ; C08G59/32
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 1×103 to about 1×104 Pa·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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