Invention Grant
US08097660B2 Rigid polyurethane foams with low thermal conductivity and a process for their production 有权
刚性聚氨酯泡沫具有低导热性和其生产工艺

Rigid polyurethane foams with low thermal conductivity and a process for their production
Abstract:
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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