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    • 6. 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。
    • 10. 发明授权
    • Process for the production of polyether polyols
    • 制备聚醚多元醇的方法
    • US6093793A
    • 2000-07-25
    • US8986
    • 1998-01-20
    • Jorg HofmannPramod GuptaHarald Pielartzik
    • Jorg HofmannPramod GuptaHarald Pielartzik
    • C08G65/26C08G65/28C08G65/30C08G65/34
    • C08G65/266
    • Polyether polyols are produced by acid-catalyzed polyaddition of alkylene oxides to starter compounds having active hydrogen atoms. Perfluoroalkylsulfonic acid salts of metals from Group IIIA of the Periodic Table of Elements (corresponding to the IUPAC Convention of 1970) are used as the catalyst. The polyaddition reaction is carried out at a temperature of from 40 to 200.degree. C. at normal pressure or pressures from 0 to 20 mbar (absolute). An inert organic solvent may optionally be included in the reaction mixture. Substantially all of the catalyst is removed from the polyether polyol-containing reaction mixture by lowering the temperature and/or by addition of a precipitating agent and/or by extraction with water. If desired, the recovered catalyst may be used in subsequent polyaddition reactions.
    • 聚醚多元醇通过酸式催化加成环氧烷生成具有活性氢原子的起始化合物来制备。 使用元素周期表IIIA族金属的全氟烷基磺酸盐(对应于1970年的IUPAC公约)作为催化剂。 加成反应在常压或0至20毫巴(绝对)的压力下在40至200℃的温度下进行。 惰性有机溶剂可以任选地包括在反应混合物中。 通过降低温度和/或通过加入沉淀剂和/或通过用水萃取,将基本上所有的催化剂从含聚醚多元醇的反应混合物中除去。 如果需要,回收的催化剂可用于随后的加聚反应。