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.:
Date of Patent:
Nov. 01, 2016
Filed:
Mar. 02, 2012
Masahiro Ichino, Aichi, JP;
Manabu Kaneko, Aichi, JP;
Kazuki Koga, Aichi, JP;
Teppei Miura, Aichi, JP;
Takuya Teranishi, Aichi, JP;
Kiharu Numata, Aichi, JP;
Kazutami Mitani, Tokyo, JP;
Tadao Samejima, Aichi, JP;
Masahiro Ichino, Aichi, JP;
Manabu Kaneko, Aichi, JP;
Kazuki Koga, Aichi, JP;
Teppei Miura, Aichi, JP;
Takuya Teranishi, Aichi, JP;
Kiharu Numata, Aichi, JP;
Kazutami Mitani, Tokyo, JP;
Tadao Samejima, Aichi, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, unknown;
Abstract
The present invention relates to a method for producing a prepreg which contains reinforcing fibers and a matrix resin composition with the weight per square meter of the reinforcing fibers being 250-2,000 g/m. The production method comprises the following steps (1)-(3): (1) a matrix resin composition blending step for obtaining a matrix resin composition by mixing an epoxy resin, a radically polymerizable unsaturated compound, an epoxy resin curing agent and a polymerization initiator that generates radicals, in said step the content of the radically polymerizable unsaturated compound relative to 100% by mass of the total of the epoxy resin and the radically polymerizable unsaturated compound being 10-25% by mass; (2) a matrix resin composition impregnating step; and (3) a surface viscosity increasing step.