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    • 5. 发明授权
    • Crystallizing polyether polyols, a method for producing them and use of the same
    • 结晶聚醚多元醇,其制备方法和用途
    • US06569981B1
    • 2003-05-27
    • US10030489
    • 2001-10-25
    • Walter SchäferJörg HofmannPramod GuptaPieter Ooms
    • Walter SchäferJörg HofmannPramod GuptaPieter Ooms
    • C08G1848
    • C08G65/269C08G18/48C08G2101/00C08G2250/00
    • This invention relates to crystallizing polyether polyols which can be produced firstly by the reaction of propylene oxide and polyhydroxy compounds in the presence of an alkoxy compound which contains zinc and/or aluminium atoms to form a crystallizing polyether polyol with an average molecular weight Mn from 500 to 5000, followed by the further reaction of the crystallizing polyether polyol which is thus obtained with 10 to 90% by weight, with respect to the amount of crystallizing polyol, of an epoxide in the presence of a catalyst which does not polymerize propylene oxide stereospecifically, to form a crystallizing polyether polyol with an average molecular weight Mn from 1000 to 20,000. The invention further relates to a method for the production thereof and to the use thereof for the production of polyurethane materials, particularly polyurethane foams, polyurethane elastomers and polyurethane coatings.
    • 本发明涉及结晶聚醚多元醇,其可首先通过环氧丙烷和多羟基化合物在含有锌和/或铝原子的烷氧基化合物的存在下反应生成平均分子量Mn为500的结晶聚醚多元醇 至5000,然后在不使立构特异性环氧丙烷聚合的催化剂存在下,将由此得到的结晶性聚醚多元醇进一步反应,其结晶多元醇相对于结晶多元醇的量为10〜90重量% 形成平均分子量Mn为1000〜20,000的结晶性聚醚多元醇。 本发明还涉及其生产方法及其用于生产聚氨酯材料,特别是聚氨酯泡沫,聚氨酯弹性体和聚氨酯涂料的用途。