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OwnerHiroyuki Anzai, Natsuko Anraku +4inventors
InventorsHiroyuki Anzai, Natsuko Anraku, Masahiro Jinno, Fumio Shiroo, Yasuo Hibino, Toshio Hesaka
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The present invention provides a polyol composition for hard polyurethane foam in which HFC-245fa is used as a blowing agent and its vapor pressure is suppressed, and a method for producing a hard polyurethane foam. The polyol composition for hard polyurethane foam comprises at least a polyol compound, a blowing agent, a foam stabilizer and a catalyst, which is mixed with an isocyanate component containing a polyisocyanate compound, followed by foaming and curing to form a hard polyurethane foam, and the blowing agent is 1,1,1,3,3-pentafluoropropane (HFC-245fa) and further comprises at least one compatibilizer selected from the group consisting of DMA, NMP, GBL and MPA, and 1,1,1,3,3-pentafluorobutane (HFC-365mfc) in a predetermined ratio.
A polyol composition for hard polyurethane foam, comprising at least a polyol compound, a blowing agent, a foam stabilizer and a catalyst, which is mixed with an isocyanate component containing a polyisocyanate compound, followed by foaming and curing to form a hard polyurethane foam, wherein
A method for producing a hard polyurethane foam, which comprises the step of mixing an isocyanate component with a polyol composition, and foaming and curing the mixture to form a hard polyurethane foam, wherein
A polyol composition formulated for producing hard polyurethane foam, comprising:
Dependencies are inferred from the claim text.