发明授权
US6372811B2 Flame resistant rigid polyurethane foams blown with hydrofluorocarbons 失效
耐火硬质聚氨酯泡沫用氢氟烃吹制

Flame resistant rigid polyurethane foams blown with hydrofluorocarbons
摘要:
Rigid polyurethane foams having improved flame resistance are disclosed. The foams are prepared from a composition containing (a) an isocyanate, (b) an isocyanate reactive composition containing an aromatic polyester polyol, (c) an organo phosphorus compound and (d) a C1 to C4 hydrofluorocarbon.
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