Heat-dissipating grease composition

Details Heat-dissipating grease composition Heat-dissipating grease composition

1990-11-19

1992-03-31

Willis, Jr., Prince

Compositions

Electrolytes for electrical devices

252 25, C10M10750

Patent

active

051005689

ABSTRACT:
A heat-dissipating grease composition which comprises 100 parts by weight of an organopolysiloxane and 100 to 900 parts by weight of an inorganic powder having high thermal conductivity and dispersed in the organopolysiloxane. The organopolysiloxane consists essentially of (1) 100 parts by weight of an organopolysiloxane having a viscosity of 50 to 500,000 centistokes at 25.degree. C. and (2) 1 to 300 parts by weight of an organopolysiloxane which consists essentially of R.sup.1.sub.3 SiO.sub.1/2 units and SiO.sub.2 units, wherein each R.sup.1 is a group selected from an alkyl group, an alkenyl group and an aryl group. The molar ratio between the R.sup.1.sub.3 SiO.sub.1/2 units and the SiO.sub.2 units is in the range of 0.5:1 to 2:1.

REFERENCES:
patent: 2676182 (1954-04-01), Daudt et al.
patent: 2814601 (1957-11-01), Currie et al.
patent: 2857356 (1958-10-01), Goodwin
patent: 3671429 (1972-06-01), Wright
patent: 3885984 (1975-05-01), Wright

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