High-temperature rigid polyurethane spray foam for pipe...

Details High-temperature rigid polyurethane spray foam for pipe... High-temperature rigid polyurethane spray foam for pipe...

C - Chemistry, Metallurgy

08

G

C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2583487

The present invention provides a rigid polyurethane spray foam, which is made using cyclopentane as the blowing agent and which is useful for pipe insulation because of its ability to withstand high~temperatures (>250~F). The inventive foams may be sprayed with existing foam spraying equipment because the foams are reacted at about a 1:1.25 polyol to isocyanate ratio.

La présente invention a pour objet une mousse de polyuréthane pistolée rigide, formée en utilisant du cyclopentane au titre d~agent d'expansion, et qui peut être employée pour isoler des tuyaux du fait de sa capacité à résister à des températures élevées (>120 °C). Les mousses décrites dans la présente invention peuvent être pistolées à l~aide d~équipements de pistolage préexistants, dans la mesure où leur rapport polyol sur isocyanate est d'environ 1 : 1,25.

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