Epoxy resin composition for fiber-reinforced composite material, prepreg and fiber-reinforced composite material
US11434361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2018 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Mar 17, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an epoxy resin composition, per 100 parts by mass of an epoxy resin component containing from 60 to 85 parts by mass of N,N,N′,N′-tetraglycidyldiaminodiphenylmethane resin (A) having a viscosity at 50° C. of 6000 mPa·s or less and from 15 to 40 parts by mass of a liquid bisphenol A epoxy resin (B) having a viscosity at 25° C. of 20000 mPa·s or less, from 8 to 15 parts by mass of a thermoplastic resin (C), from 2 to 10 parts by mass of elastomer microparticles (D) having an average particle diameter of 1000 nm or less, and from 0.5 to 2.5 parts by mass of silica microparticles (E) having an average particle diameter of 1000 nm or less are blended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.