C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/143
C08J 7/04 (2006.01) B32B 7/12 (2006.01) C08J 5/12 (2006.01) C08J 7/12 (2006.01)
Patent
CA 1307708
IMPROVED ADHESION OF SILICONE ELASTOMER TO POLYURETHANE Abstract When a silicone elastomeric coating is applied over a polyurethane foam to protect it, an adhesion problem arises. It has been found that a coating of from 0.05 to 0.2 grams per square foot of surface of a silane of the formula ZSi(OR)3, where Z is an amine functional radical and R is a monovalent hydrocarbon radical having from 1 to 6 carbon atoms, applied to the polyurethane foam under the silicone elastomeric coating greatly improves the adhesion between them. The silicone elastomeric coating is a particular type of tin catalyzed silicone coating comprising a particular organosilicon resin, a hydroxy-ended silicone polymer, and filler.
543237
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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