CROSSLINKED POLYMER PARTICLES FOR EPOXY RESINS, EPOXY RESIN COMPOSITION, AND CURED EPOXY ARTICLE

摘要

The invention discloses a cross-linked polymer particle for an epoxy resin, an epoxy resin composition containing the cross-linked polymer particle, the epoxy resin and a curing agent, and an epoxy cured material having qualities of colorless transparency and crack resistance as a result of curing the resin composition. The cross-linked polymer particle for the epoxy resin contains a (meth)acrylate monomer unit and a crosslinking monomer unit, wherein a volume average primary particle diameter is 0.5 to 10 µ m, and a glass transition temperature of the monomer components excluding the crosslinking monomer is 30°C or more by FOX formula calculation, and the refractivity at 23°C is 1.490 to 1.510.