CPC C08L 83/04 (2013.01) [C08J 3/226 (2013.01); C08J 2383/04 (2013.01)] | 10 Claims |
1. A composition comprising the following components:
(a) 15 to 49.8 volume-percent of a first polysiloxane that has a viscosity in a range of 50 centiStokes to 550 Stokes as determined according to ASTM D4283-98;
(b) 0.2 to 5 volume-percent of an organoclay;
(c) 50-74 volume-percent roundish or crushed thermally conductive fillers comprising:
(i) 5 to 15 volume-percent small thermally conductive fillers having a median particle size in a range of 0.1 to 1.0 micrometers;
(ii) 10 to 25 volume-percent medium thermally conductive fillers having a median particle size in a range of 1.1 to 5.0 micrometers;
(iii) 25 to 50 volume-percent large thermally conductive fillers having a median particle size in a range of 5.1 to 50 micrometers; and
(d) 0 to 5 volume-percent of an alkoxy functional linear polysiloxane different from the first polysiloxane and/or an alkoxy functional linear silane;
where volume-percent values are relative to composition volume.
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