CPC C08L 83/04 (2013.01) [C08K 3/013 (2018.01); C08K 3/28 (2013.01); C08L 83/06 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C08K 2003/282 (2013.01); C08K 2201/001 (2013.01); C08K 2201/003 (2013.01); C08L 2203/206 (2013.01)] | 5 Claims |
1. A thermally conductive polysiloxane composition comprising:
(A) a thermally conductive filler;
(B) a mixture of:
(i) a polyorganosiloxane containing one curable group, the polyorganosiloxane containing one curable group being represented by the following formula (1):
wherein Ra is the curable group, each R is independently a C1-6 alkyl group or a C6-12 aryl group, and n is an integer of 20 to 50, and
(ii) a polyorganosiloxane containing more than one curable group,
wherein a content of the (i) polyorganosiloxane containing one curable group in the mixture (B) is more than 80% by mass;
(C) a siloxane compound represented by the following formula (3):
wherein:
R1 is a group having an alkoxysilyl group having 1 to 4 carbon atoms;
R2 is a linear organosiloxy group represented by the following formula (4):
each R4 is independently a monovalent hydrocarbon group having 1 to 12 carbon atoms;
Y is a group selected from the group consisting of methyl, vinyl, and R1,
d is an integer of 2 to 60;
each X is independently a divalent hydrocarbon group having 2 to 10 carbon atoms;
each of a and b is independently an integer of 1 or more;
c is an integer of 0 or more;
a+b+c is an integer of 4 or more; and
each R3 is independently a monovalent hydrocarbon group having 1 to 6 carbon atoms or a hydrogen atom;
(D) a hydrogenpolyorganosiloxane; and
(E) a platinum catalyst.
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