C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
18/1166, 400/532
C08K 9/06 (2006.01) B29C 35/02 (2006.01) C08K 3/34 (2006.01) C08L 83/07 (2006.01)
Patent
CA 1216987
METHOD OF IMPROVING HEAT STABILITY OF PIGMENTABLE SILICONE ELASTOMER Abstract of the Disclosure A method of improving the heat stability of silicone elastomers is disclosed. An improved pigmentable silicone elastomeric composition is produced by mixing a silicone elastomer composition having a vinyl radical content of from 0.01 to 0.1 percent by weight with a pretreated, white clay having a surface area of less than 50 m2/g, said surface containing olefinic unsaturated siloxy groups, and an organic peroxide vulcanizing agent. The improved silicone elastomeric composition is formed, then heated to vulcanize, to yield a silicone elastomer having improved resistance to the effects of elevated temperatures. The improved silicone elastomeric composition is also claimed. The improved silicone elastomeric composition can be pigmented.
391119
Cornelius David J.
Przybyla Richard L.
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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