C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/12 (2006.01) C08F 212/08 (2006.01) C08F 212/12 (2006.01) C08L 25/02 (2006.01) C08L 25/16 (2006.01)
Patent
CA 2344338
In one embodiment, the present invention relates to a process for preparing a foam product involving the steps of (A) forming a foamable mixture of (1) a polymer comprising about 10 % to about 90 % monomers of at least one of meta- substituted styrene and para-substituted styrene and 0 % to about 90 % monomers of styrene, and (2) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture and (B) foaming the mixture into a region of reduced pressure to form the foam product.
Dans un mode de réalisation, la présente invention concerne un procédé de préparation d'un produit de mousse comprenant les étapes consistant (A) à former un mélange expansible (1) d'un polymère contenant environ 10 % à environ 90 % de monomères d'un styrène à substitution meta et/ou un styrène à substitution para, et 0 % à environ 90 % de monomères de styrène, et (2) d'un agent porogène contenant une grande quantité de dioxyde de carbone sous une pression suffisante pour empêcher le prémoussage du mélange, et (B) à mousser le mélange dans une région sous pression réduite pour former le produit de mousse.
Breindel Raymond M.
Miller Larry M.
Weekley Mitchell Z.
Owens Corning
Owens Corning Intellectual Capital Llc
Smart & Biggar
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