Method of foaming a siloxane composition using microwave

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

403/51, 204/91.3

C08J 9/00 (2006.01) C08J 3/28 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1065549

Abstract of the Disclosure A polydiorganosiloxane gum base stock can be foamed and cured by exposing to a microwave source a composition which comprises 100 parts by weight of the stock, 3 to 25 parts by weight of an organohydrogen- siloxane, 0.05 to 0.5 part by weight of an acetylenic alcohol inhibitor, 1 to 200 p.p.m. platinum as a platinum catalyst and from 0.25 to 30 parts by weight of a microwave sensible material. This method is particularly useful where it would be impractical or undesirable to use heat to foam and cure silicone compositions.

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