McAulay Nissen Goldberg Kiel & Hand, LLP
Heat conductive BN filler and electrically insulating/heat dissipating sheet
 A heat conductive BN filler having a cohesive factor of 3-50% is provided. An electrically insulating/heat dissipating sheet is obtained by mixing the BN filler with an organopolysiloxane and a crosslinking agent, shaping the resulting silicone rubber composition into a sheet form, followed by vulcanization. Without special orienting means, the BN particles are oriented in the sheeting step such that their a-axis is perpendicular to the sheet surface. 
Shin-Etsu Chemical Co., Ltd.
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Tokio Tomokazu Takehide
Sekiya Washio Okami