Polyether polyols stabilized with tocopherol
    1.
    发明授权
    Polyether polyols stabilized with tocopherol 失效
    用生育酚稳定的聚醚多元醇

    公开(公告)号:US5695689A

    公开(公告)日:1997-12-09

    申请号:US530628

    申请日:1995-09-20

    摘要: .alpha.- and/or .beta.-tocopherol (vitamin E), optionally in combination with octylated diphenylamines, is combined with a polyether polyol having a molecular weight of from about 300 to about 10,000 to stabilize that polyether polyol. Polyether polyols which are stabilized in this manner are particularly useful in the production of polyurethanes and polyurethane foams with a reduced tendency toward discoloration.

    摘要翻译: 任选与辛基化二苯胺组合的α-和/或β-生育酚(维生素E)与分子量为约300至约10,000的聚醚多元醇组合以稳定该聚醚多元醇。 以这种方式稳定的聚醚多元醇特别可用于生产具有降低的变色趋势的聚氨酯和聚氨酯泡沫体。

    Use of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid for stabilizing
polyether polyols
    8.
    发明授权
    Use of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid for stabilizing polyether polyols 失效
    3,5-二叔丁基-4-羟基苯基丙酸用于稳定聚醚多元醇的用途

    公开(公告)号:US5006599A

    公开(公告)日:1991-04-09

    申请号:US450894

    申请日:1989-12-14

    CPC分类号: C08K5/13

    摘要: The present invention relates to a method for stabilizing a polyether polyol having a molecular weight of from about 300 to about 10,000 comprising adding 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid as an antioxidant stabilizer, optionally in combination with other antioxidants, to said polyether polyol. This invention further relates to polyols stabilized by the method of this invention and to stabilized polyurethanes prepared from such stabilized polyols.

    摘要翻译: 本发明涉及稳定分子量为约300至约10,000的聚醚多元醇的方法,包括加入3,5-二叔丁基-4-羟基苯基丙酸作为抗氧化剂稳定剂,任选地与其它抗氧化剂 至所述聚醚多元醇。 本发明还涉及通过本发明的方法稳定的多元醇和由这种稳定的多元醇制备的稳定的聚氨酯。