Method of preparing rigid polyurethane foam and composition...

Details Method of preparing rigid polyurethane foam and composition... Method of preparing rigid polyurethane foam and composition...

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2303699

A method of preparing a rigid polyurethane foam having improved thermal conductivity, and a composition for such rigid polyurethane foam is provided. In the preparation a rigid polyurethane foam from a composition comprising an aromatic polyisocyanate, a polyol, a blowing agent, a catalyst, a surfactant and other aids, the blowing agent is a blend of cyclopentane and water, and the polyol contains a polyether polyol prepared by addition-polymerizing an alkylene oxide to o-toluenediamine as an initiator.

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