Rigid polyurethane foams with low thermal conductivity and a...

Details Rigid polyurethane foams with low thermal conductivity and a... Rigid polyurethane foams with low thermal conductivity and a...

C - Chemistry, Metallurgy

08

G

C08G 18/50 (2006.01) C08G 18/42 (2006.01) C08G 18/72 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2599090

Rigid closed-cell polyurethane foams with low k-factors are produced by reacting an organic polyisocyanate with an amine-based polyether polyol and a polyester polyol in the presence of a catalyst and a hydrofluorocarbon blowing agent, preferably, HFC-245fa. It is preferred that no water be added to the reaction mixture.

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