Mixtures of hydrofluorcarbons and acids as foam blowing agents
    5.
    发明申请
    Mixtures of hydrofluorcarbons and acids as foam blowing agents 审中-公开
    氢氟碳酸和酸的混合物作为发泡剂

    公开(公告)号:US20050113470A1

    公开(公告)日:2005-05-26

    申请号:US10721611

    申请日:2003-11-25

    IPC分类号: C08J9/12 C08J9/14 C08J9/00

    摘要: A method of preparing polyurethane or polyisocyanurate from compositions comprising reacting and foaming a mixture of at least one polyol and isocyanate which react to form polyurethane or polyisocyanurate foams in the presence of a blowing agents which comprises: a hydrofluorocarbon or at least one compound selected from the group consisting of: propane, n-butane, isobutene, n-pentane, isopentane, neopentane, cyclopentane, acetone, dimethyl ether, and inert gases; an acid; and, optionally, water.

    摘要翻译: 一种由组合物制备聚氨酯或聚异氰脲酸酯的方法,包括在发泡剂存在下使至少一种多元醇和异氰酸酯的混合物反应形成聚氨酯或聚异氰脲酸酯泡沫,该混合物包括:氢氟烃或至少一种选自 由丙烷,正丁烷,异丁烯,正戊烷,异戊烷,新戊烷,环戊烷,丙酮,二甲醚和惰性气体组成的组; 酸; 和任选的水。