Title:
EPOXY RESIN COMPOSITION, PREPREG, AND FIBER-REINFORCED PLASTIC OBTAINED USING THESE
Document Type and Number:
WIPO Patent Application WO/2022/209715
Kind Code:
A1
Abstract:
Provided is an epoxy resin composition that improves adhesion of a thermoplastic epoxy resin to reinforcing fibers. This epoxy resin composition contains a difunctional phenol compound, a difunctional epoxy resin and a polymerization catalyst, and is characterized by containing 50 wt% or more of an epoxy resin (a) represented by formula (1) as the difunctional epoxy resin, and in that the difunctional epoxy resin/difunctional phenol compound molar ratio is 1.01-1.05, and a polymer obtained from this epoxy resin composition has an epoxy equivalent weight of 5000-20,000 g/eq., a bending strength of 70 MPa or more, and a tetrahydrofuran-insolubles content of 10 wt% or less. (A is represented by formula (2), X is a single bond, an alkylene group, an arylene group, O, CO, or the like, and Y1 is an alkyl group or an aryl group.)
Inventors:
YAMADA RYO (JP)
NAKANISHI TETSUYA (JP)
NAKANISHI TETSUYA (JP)
Application Number:
PCT/JP2022/010714
Publication Date:
October 06, 2022
Filing Date:
March 10, 2022
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08G59/24; C08G59/62; C08J5/24
Domestic Patent References:
| WO2017094633A1 | 2017-06-08 | |||
| WO2008018364A1 | 2008-02-14 |
Foreign References:
| JP2011144319A | 2011-07-28 | |||
| JP2014005345A | 2014-01-16 | |||
| JP2020176188A | 2020-10-29 |
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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