Toray Industries, Inc.

Jeffrey A Satterwhite

Kenichi Yoshioka

Atsuhito Arai

Nobuyuki Arai

Hiroaki Sakata

Alfred P Haro

Jonathan C Hughes

Johnathan C Hughes

Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg.

Prepreg, fiber reinforced composite material, and manufacturing method for fiber reinforced composite material

The embodiments herein relate to a benzoxazine resin composition, a prepreg, and a carbon fiber-reinforced composite material. More specifically, the embodiments herein relate to a benzoxazine resin composition that provides a carbon fiber-reinforced composite material that is suitable for use as a manufacture material due to its superior mechanical strength in extreme use environments, such as high temperature and high moisture, as well as a prepreg, and a carbon fiber-reinforced composite material. An embodiment comprises a benzoxazine resin composition having a multifunctional benzoxazine resin; a multifunctional epoxy resin that is a liquid at 40&#xb0; C. and has three or more glycidyl groups; a sulfonate ester; and optionally at least one thermoplastic resin. The resin may include an interpenetrating network structure after curing.

Benzoxazine resin composition, prepreg, and fiber-reinforced composite material

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Puyallup, WA, United States of America

Jeffrey A Satterwhite