Title:
RESIN COMPOSITION, FIBER-REINFORCED PLASTIC MOLDING MATERIAL, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2020/137945
Kind Code:
A1
Abstract:
The present invention provides: an FRP molding material which is capable of suppressing the problem of changes in mechanical characteristics in a high temperature environment by means of a crosslinking reaction, while maintaining good moldability that is a characteristic of phenoxy resins, and which enables the achievement of an FRP molded article that has a heat resistance high enough for use in a harsh environment and excellent mechanical strength at room temperature and in a hot environment; and a method for producing this FRP molding material. A resin composition which is used, as a fiber-reinforced plastic molding material, together with a reinforcing fiber base material, and which is characterized by containing, as essential ingredients, (A) a phenoxy resin, (B) a maleic acid anhydride copolymer serving as a crosslinking agent and (C) a curing catalyst, and is also characterized in that: the maleic acid anhydride copolymer (B) has a weight average molecular weight of 100,000 or less and an acid value of 100-400 KOH-mg/g; and the components are blended so that the molar ratio of the secondary hydroxyl groups of the phenoxy resin (A) to the acid anhydride groups of the maleic acid anhydride copolymer (B) is from 1/0.1 to 1/1.6.
Inventors:
HARAKO RYOSUKE (JP)
TAKAHASHI HIROYUKI (JP)
TAKAHASHI HIROYUKI (JP)
Application Number:
PCT/JP2019/050297
Publication Date:
July 02, 2020
Filing Date:
December 23, 2019
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08L71/10; C08G59/42; C08J5/24; C08K7/02; C08L25/08; C08L35/02; C08L63/00
Domestic Patent References:
| WO2018173678A1 | 2018-09-27 | |||
| WO2016152856A1 | 2016-09-29 |
Foreign References:
| JPH09143445A | 1997-06-03 | |||
| JP2014218633A | 2014-11-20 |
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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