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    Cured polyester plastic compositions derived from recycled polyurethanes
    1.
    发明公开
    Cured polyester plastic compositions derived from recycled polyurethanes 失效
    Aus wiederverwendeten Polyurethanen abgeleitetegehärtetePolyester-Zusammensetzungen。

    公开(公告)号：EP0633285A1

    公开(公告)日：1995-01-11

    申请号：EP94304937.9

    申请日：1994-07-05

    申请人： ARCO Chemical Technology, L.P.

    发明人： Yang, Lau S. ,  Kooker, Diane A.

    IPC分类号： C08J11/26 ,  C08G18/83 ,  C08G63/676

    CPC分类号： C08J11/26 ,  C08F290/147 ,  C08G18/831 ,  C08G63/676 ,  C08J2375/04 ,  Y02P20/582 ,  Y02W30/706

    摘要： Cured, thermoset plastic articles derived from scrap polyehter-based polyurethanes are obtained by converting the polyurethane to a liquified mixture containing digested polyurethane and cyclic, unsaturated anhydride. A Lewis acid then catalyzes insertion of the cyclic, unsaturated anhydride into the polyether backbone of the polyurethane to give a liquid, unsaturated resin. The unsaturated resin can be cured with a vinyl monomer in the presence of a free-radical initiator to give a cured, thermoset plastic.

    摘要翻译： 通过将聚氨酯转变成含有消化的聚氨酯和环状不饱和酸酐的液化混合物，得到衍生自废聚酯基聚氨酯的热固性塑料制品。 然后路易斯酸催化环状不饱和酸酐插入聚氨酯的聚醚主链中，得到液体不饱和树脂。 不饱和树脂可以在自由基引发剂存在下用乙烯基单体固化，得到固化的热固性塑料。

    Preparation of polyesters from polyethers by an ester-insertion process
    2.
    发明公开
    Preparation of polyesters from polyethers by an ester-insertion process 失效
    Polyesterherstellung aus Polyethern durch ein Ester-Insertions-Verfahren。

    公开(公告)号：EP0599561A1

    公开(公告)日：1994-06-01

    申请号：EP93309246.2

    申请日：1993-11-19

    申请人： ARCO Chemical Technology, L.P.

    发明人： Yang, Lau S. ,  Kooker, Diane A.

    IPC分类号： C08G63/40 ,  C08G63/66

    CPC分类号： C08G63/668 ,  C08G63/676

    摘要： Polyesters are prepared by a ester-insertion reaction of a polyether and a cyclic anhydride in the presence of a Lewis acid catalyst. The process is advantageously used to convert polyether polyols recovered from polyurethanes into curable unsaturated polyester resins.

    摘要翻译： 聚酯通过聚醚和环状酸酐在路易斯酸催化剂存在下的酯插入反应制备。 该方法有利地用于将从聚氨酯回收的聚醚多元醇转化为可固化的不饱和聚酯树脂。