Foam insulation made with expandable microspheres and methods

Details Foam insulation made with expandable microspheres and methods Foam insulation made with expandable microspheres and methods

C - Chemistry, Metallurgy

08

J

C08J 9/14 (2006.01) B01J 13/14 (2006.01) B01J 13/18 (2006.01) C08G 18/00 (2006.01) C08J 9/32 (2006.01)

Patent

CA 2446885

A polyurethane and/or polyisocyanurate foam is made using expandable microspheres which encapsulate a primary blowing agent. By expanding during the foam making process, the microspheres function as a blowing agent. The foam preferably has at least 10% by weight expandable micro spheres which encapsulate a non-halogenated hydrocarbon chemical or a non-halogenated hydrocarbon chemical blend and less than 2% by weight of any non-encapsulated blowing agents.

La présente invention concerne une mousse de polyuréthane et/ou de polyisocyanurate. Ladite mousse est fabriquée à l'aide de microsphères expansibles qui encapsulent un agent d'expansion principal. Par expansion lors du procédé de fabrication de mousse, les microsphères fonctionnent comme un agent d'expansion. De préférence, la mousse présente au moins 10 % en poids de microsphères expansibles qui encapsulent un agent chimique hydrocarbure non halogéné ou un mélange chimique hydrocarbure non halogéné et moins de 2 % en poids de n'importe quels agents d'expansion non encapsulés.

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