Patent ID: 9688801
Date: 2017-06-27
CPC Classifications: C08F,C08L,C09D,H01L

Claim:
1. A curable resin composition, comprising: 1 to 30% by mass of a vinyl polymer powder; and 70 to 99% by mass of a curable resin; wherein the vinyl polymer powder comprises a primary particle having a core shell morphology wherein at least one of a solubility parameter and molecular weight is different for the core and the shell of the primary particle, an acetone-soluble component of the vinyl polymer powder is 30% by mass or more, a mass average molecular weight of the acetone-soluble component is 100,000 or more, a content of an alkali metal ion of the vinyl polymer powder is 10 ppm or less, a volume average particle size (Dv) of the primary particle is from 500 nm to 830 nm, and the curable resin is an epoxy resin which is liquid at 25° C.