Title:
TOW PREPREG AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/101026
Kind Code:
A1
Abstract:
A tow prepreg in which a reinforcing fiber bundle is impregnated with a matrix resin that is the reaction product of a resin composition containing a bifunctional epoxy resin (A), a bifunctional compound (B) having reactivity with an epoxy group, and a curing catalyst (C) selected from the group consisting of amine curing catalysts, phosphorus curing catalysts, and imidazole curing catalysts, wherein: the matrix resin has a weight-average molecular weight of 300-2,000 and a glass transition point of 15-35°C; the tow prepreg has an unraveling tension of not more than 8.0 N at an atmospheric temperature of 20-50°C; and pulling shear separation load for two tow prepregs under prescribed conditions is 1.0-24.5 N/mm.
Inventors:
ETO KAZUYA (JP)
Application Number:
PCT/JP2022/044637
Publication Date:
June 08, 2023
Filing Date:
December 02, 2022
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08J5/24
Domestic Patent References:
| WO2017094633A1 | 2017-06-08 | |||
| WO2020115937A1 | 2020-06-11 | |||
| WO2019225442A1 | 2019-11-28 | |||
| WO2008010823A2 | 2008-01-24 |
Foreign References:
| JP2006321897A | 2006-11-30 | |||
| JP2006321896A | 2006-11-30 | |||
| JP2018062641A | 2018-04-19 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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