Heat-curable resin composition, prepreg, and fiber-reinforced composite material
US11319435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Feb 6, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2481/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermosetting resin composition at least including: [A] an epoxy resin containing two or more glycidyl groups; [B] a cyanate ester resin containing two or more cyanate groups; and [C] an amine compound; and satisfying the following conditions (1) and (2): (1) 0.25≤the number of moles of glycidyl groups in the thermosetting resin composition/the number of moles of cyanate groups in the thermosetting resin composition≤1.5; and (2) 0.05≤the number of moles of active hydrogen contained in the amino groups in the thermosetting resin composition/the number of moles of cyanate groups in the thermosetting resin composition<0.5; and a prepreg and a fiber reinforced composite material using the thermosetting resin composition. Provided are a thermosetting resin composition having excellent mechanical properties and heat resistance in a high-temperature environment after moisture absorption, and having excellent reactivity that allows curing in a short time; a prepreg prepared by impregnating a reinforced fiber with a thermosetting resin composition, which prepreg has excellent handling ability (tackiness properties) at room temperature; and a fiber reinforced composite material including a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.