Epoxy resin composition, prepreg and molded body
AssigneeSumitomo Chemical Company, Limited
InventorYusaku Kohinata
Life of this patent
Estimating the term…
Abstract
An epoxy resin composition including components (A), (B), (C) and (D); wherein a content of the component (A) is 60 to 90 parts by mass, and a content of the component (B) is 10 to 40 parts by mass, with respect to epoxy resins; the epoxy resin composition has a characteristic that, when cured and formed into a cured product, the cured product has a glass transition temperature of 200° C. or higher; and a viscosity at 100° C. of the resin composition is 5 to 35 Pa·s, wherein Component (A) is an aromatic epoxy resin having at least 3 glycidyl groups in one molecule, Component (B) is an aromatic epoxy resin having two glycidyl groups in one molecule, Component (C) is an aromatic polysulfone resin having a reduced viscosity of 0.18 to 0.30 dl/g; and Component (D) is an aromatic amine compound.
Claims9
An epoxy resin composition comprising:
- the following component (A), component (B), component (C) and component (D);
- wherein
- a content of said component (A) is 60 parts by mass or more and 90 parts by mass or less with respect to a total content of 100 parts by mass of epoxy resins contained in said epoxy resin composition;
- a content of said component (B) is 10 parts by mass or more and 40 parts by mass or less with respect to a total content of 100 parts by mass of the epoxy resins contained in said epoxy resin composition;
- said epoxy resin composition has a characteristic that, when cured and formed into a cured product, said cured product has a glass transition temperature of 200° C. or higher;
- a viscosity at 100° C. of the resin composition comprising said component (A), said component (B), said component (C) and said component (D) is 5 Pa·s or more and 35 Pa·s or less, and
- said component (A) contains a trimer of monomers of the component (A), and a content of the trimer contained in the component (A) is 3% by mass or less with respect to a total mass of the component (A),
- Component (A):
- an aromatic epoxy resin having at least 3 glycidyl groups in one molecule;
- Component (B):
- an aromatic epoxy resin having two glycidyl groups in one molecule;
- Component (C):
- an aromatic polysulfone resin having a reduced viscosity of 0.18 dl/g or more and 0.30 dl/g or less;
- and
- Component (D):
- an aromatic amine compound.
Dependencies are inferred from the claim text.