Epoxy resin composition, curable resin composition, and fiber-reinforced composite material
AssigneeDIC Corporation
InventorsKoji Hayashi, Nana Sugimoto, Kunihiro Morinaga
Life of this patent
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Abstract
The present invention provides an epoxy resin composition that contains an epoxy resin (A) that is a product of reaction between an epihalohydrin and either catechol, optionally with its aromatic ring methyl-substituted, or pyrogallol, optionally with its aromatic ring methyl-substituted, and an aromatic glycidylamine epoxy resin (B). This epoxy resin composition is suitable for use in fiber-reinforced composite materials, fiber-reinforced plastic articles, etc., by virtue of being liquid at room temperature, being superior in quick curing, and high mechanical properties in its cured form.
Claims14
An epoxy resin composition comprising an epoxy resin (A) that is a product of reaction between an epihalohydrin and either catechol, optionally with an aromatic ring thereof methyl-substituted, or pyrogallol, optionally with an aromatic ring thereof methyl-substituted, and an aromatic glycidylamine epoxy resin (B);
- wherein the epoxy resin (A) contains a cyclic compound (a1) that has a cyclic structure whose constituent atoms include two oxygen atoms derived from oxygen atoms of either the catechol optionally with an aromatic ring thereof methyl-substituted or pyrogallol optionally with an aromatic ring thereof methyl-substituted;
- and
- wherein a cyclic compound (a1) content is between 0.040 and 0.115 mol per 100 g of the epoxy resin (A) of the catechol optionally with an aromatic ring thereof methyl-substituted or the pyrogallol optionally with an aromatic ring thereof methyl-substituted.
Dependencies are inferred from the claim text.