C - Chemistry – Metallurgy – 08 – G
Patent
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.
Ball Edward E.
Mautino V. Michael
Schilling Steven L.
Bayer Materialscience Llc
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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