Patent ID: 9464218
Filing Date: 2016-10-11
CPC Classification: C08F,C08L,C09J,H01L,Y10T

Claim Text:
1. A resin composition comprising: 100 parts by mass of a curable resin; and 0.1 to 50 parts by mass of a (meth)acrylate polymer having the following properties: a volume average primary particle size of 0.520 to 3.00 μm; a peak temperature of tan δ in the range of −100 to 0° C., determined with dynamic viscoelasticity measurement, of −40° C. or below; a peak height of tan δ in the range of −100 to 0° C., determined with dynamic viscoelasticity measurement, of 0.300 or more; and an acetone-insoluble component of 99% by mass or more; wherein the (meth)acrylate polymer contains 81 to 98% by mass of a rubbery (meth)acrylate polymer (A) having a glass transition temperature of −40° C. or below and 2 to 19% by mass of a polymerized monomer mixture (b), which is polymerized in the presence of said rubbery (meth)acrylate polymer (A), totaling 100% by mass; said rubbery (meth)acrylate polymer (A) is obtained by polymerizing a monomer mixture (a) comprising 0.0001 to 2.5% by mass of a cross-linkable monomer (a1) and 69.999 to 99.999% by mass of a (meth)acrylate monomer (a2) capable of giving a homopolymer having a glass transition temperature of −40° C. or below, based on 100% by mass of monomer mixture (a); and said monomer mixture (b) comprises 0.1% by mass or more of a cross-linkable monomer (b1) and 99.9% by mass or less of a vinyl monomer (b2), based on 100% by mass of monomer mixture (b).