Patent ID: 7589147

Claim:
A resin composition for a thermal conductive material, comprising: a polymer (I), a liquid-state plasticizer (II), a thermal conductive filler (III) having a thermal conductivity of 20 W/m·K or more, and an antifoamer, wherein the liquid-state plasticizer (II) is in a liquid state at 25° C., and has a mass loss rate of 2 mass % or less when kept at 130° C. for 24 hours, wherein the polymer (I) is a (meth)acrylic polymer (I-a), and further comprises a polymerizable monomer (IV), wherein the (meth)acrylic polymer (I-a) has a mass-average molecular weight (Mw) in a range from 10,000 to 1,000,000, and is obtained by radical polymerization using a chain transfer agent, and wherein when supposing that the total of the (meth)acrylic polymer (I-a) and polymerizable monomer (IV) is 100% by mass, the (meth)acrylic polymer (I-a) is present in a range from 10 to 80% by mass, and the polymerizable monomer (IV) is present in a range from 20 to 90% by mass.