Microwave cured silicone elastomeric foam

Details Microwave cured silicone elastomeric foam Microwave cured silicone elastomeric foam

C - Chemistry, Metallurgy

08

J

403/51

C08J 9/28 (2006.01) C08J 9/30 (2006.01)

Patent

CA 1186848

-19- MICROWAVE CURED SILICONE ELASTOMERIC FOAM Abstract A simplified method of manufacturing a silicone elastomeric foam comprises mechanically generating a stable froth of an aqueous emulsion while adding surfactant and thickener, then exposing the stable froth to microwave energy to remove the water. The emulsion consists essentially of anionically stabilized hydroxyl endblocked polydiorganosiloxane, colloidal silica, an organic tin compound, and water, having a pH in the range of 9 to 11.5 inclusive. The dried froth is an elastomeric, cellular structure possessing typical silicone elastomer heat stability and long-term aging stability.

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