Patent ID: 7018701

Claim:
A thermally conductive sheet comprising: a polyolefin elastomer mixed with a thermally conductive filler, wherein the polyolefin elastomer is a polymer obtained in which an allyl group is present at both terminals polyisobutylene, and volatile components, including residual solvent and an unreacted residual material, contained in the polyolefin elastomer are removed by distillation or reduced-pressure aspiration during or before producing the thermally conductive sheet, so that an amount of volatile organic gas generated from the thermally conductive sheet per unit surface area is not more than 1000 μ/cm 2 , an amount of volatile corrosive gas generated from the thermally conductive sheet per unit surface area is not more than 10 μg/cm 2 , and the thermally conductive sheet has a thermal conductivity of 0.5 to 20 W/m·K.