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:
Mar. 30, 2021
Filed:
Nov. 18, 2016
Nippon Steel & Sumikin Materials Co., Ltd., Tokyo, JP;
Kazuya Eto, Tokyo, JP;
Yuki Nobuzawa, Tokyo, JP;
Isao Kurata, Tokyo, JP;
Shinkichi Murakami, Tokyo, JP;
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Tokyo, JP;
Abstract
An in-situ polymerized type thermoplastic prepreg is provided, which is excellent in productivity, has tack properties and drape properties that allow easy shaping in a mold, is excellent in handling properties, and allows a molded product obtained by curing to have both mechanical properties as high as those of a thermosetting composite and the features of the thermoplastic composite. An in-situ polymerized type thermoplastic prepregincludes reinforcing fibersand an in-situ polymerized type thermoplastic epoxy resinas a matrix resin. The in-situ polymerized type thermoplastic epoxy resinis cured to B-stage, with the weight-average molecular weight being 6,000 or less, and has tack properties and drape properties at 30° C. or less, and the in-situ polymerized type thermoplastic epoxy resin after curing has a weight-average molecular weight of 30,000 or more.