Compositions: ceramic – Ceramic compositions – Refractory
Patent
1992-07-29
1994-08-23
Group, Karl
Compositions: ceramic
Ceramic compositions
Refractory
423625, 264 5, 264 15, C04B 3510, C01F 702, B29B 910
Patent
active
053407814
ABSTRACT:
Disclosed are spherical corundum particles consisting essentially of single particles having an average particle size of 5 to 35 .mu.m and a shape not including cutting edges. The particles are prepared by adding one or more members selected from halogen compounds, boron compounds, and alumina hydrates to pulverized alumina having a specific particle size, heat-treating the mixture at a temperature of at least 1000.degree. C., and disintegrating the heat-treated product. A rubber or plastic composition having a high thermal conductivity is formed by incorporating such particles into a rubber or plastic, and this composition is valuable as a sealing material for a semiconductor, etc..
REFERENCES:
patent: 1037999 (1912-09-01), Saunders
patent: 2630616 (1953-03-01), Robinson
patent: 3353910 (1967-11-01), Cornelius
patent: 4307147 (1981-12-01), Ohishi et al.
patent: 4308088 (1981-12-01), Cherdron et al.
patent: 4374119 (1983-02-01), Schepers
patent: 4477427 (1984-10-01), Matyasi et al.
patent: 4574073 (1986-03-01), Meyer
patent: 4650819 (1987-03-01), Nakamoto et al.
patent: 4818515 (1989-04-01), Ceresa
patent: 5149520 (1992-09-01), Sucech et al.
patent: 5273619 (1993-12-01), Masahiro et al.
Oda Yukio
Ogawa Jun
Group Karl
Sample David
Showa Denko Kabushiki Kaisha
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