Extruded, open-cell foam and process for making

Details Extruded, open-cell foam and process for making Extruded, open-cell foam and process for making

C - Chemistry, Metallurgy

08

J

C08J 9/228 (2006.01) C08J 9/12 (2006.01) C08L 25/06 (2006.01)

Patent

CA 2189647

Disclosed is an extruded, open-cell alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of 30 percent or more. The foam further has in minor dimension and cross section of greater than 6.4 millimeters. The foam is substantially free of rubbery polymer content and thermoset polymer content and is free of carbon black. It has a density of 2.0 to 3.5 pounds per cubic foot (32 to 48 kilograms per cubic meter) and has an average cell size of 0.08 to 1.2 millimeters. The foam has a high heat distortion temperature, and is particularly useful in roofing applications. Further disclosed is a process for making the open-cell foam.

L'invention concerne une mousse polymère aromatique alcényle à alvéoles ouvertes extrudée et destinée à être utilisée comme matière d'isolation. Ladite mousse contient 30 pour cent ou plus d'alvéoles ouvertes et présente une épaisseur supérieure à 6,5 millimètres. La mousse présente un point de déformation à chaud élevé et convient en particulier aux systèmes de toiture. L'invention concerne également un procédé de fabrication de ladite mousse à alvéoles ouvertes.

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