C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
403/51
C08J 9/02 (2006.01) C08J 9/12 (2006.01) C08L 83/04 (2006.01)
Patent
CA 1270094
WATER-BLOWN SILICONE FOAM Abstract This invention relates to a method of producing silicone elastomeric foam of low density. The method mixes polydiorganosiloxanes having hydroxyl endblocking or vinyl endblocking or mixtures of both along with water to react with silicon hydride in the presence of platinum catalyst to release hydrogen gas to create a froth which cures to a foam. The combination of ingredients allows the manufacture of silicone foam having different combinations of properties than those obtained from previous methods. Embodiments of the invention also make use of specific profoamers and specific alcohols to further modify the properties of the foams produced. The method of this invention yields a low cost, low density, silicone elastomeric foam having physical properties which enable it to be used in cushioning and sealing applications.
514937
Bauman Therese Marie
Dietlein John Earl
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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