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    • 20. 发明授权
    • Process for the preparation of vegetable oil-based polyols and
electroninsulating casting compounds created from vegetable oil-based
polyols
    • 由植物油基多元醇制备的植物油基多元醇和电子注射铸造化合物的制备方法
    • US6107433A
    • 2000-08-22
    • US187992
    • 1998-11-06
    • Zoran PetrovicAndrew GuoIvan Javni
    • Zoran PetrovicAndrew GuoIvan Javni
    • C07D303/42C08G18/36C08G83/00C07D301/00C07D301/14C07D301/19C07D303/00
    • C08G18/36C07D303/42C08G2190/00
    • A vegetable oil-based polyol is made by adding a peroxyacid to vegetable oil wherein said peroxyacid reacts with said vegetable oil to form epoxidized vegetable oil and adding said epoxidized vegetable oil to a mixture of an alcohol, water, and a catalytic amount of fluoboric acid so as to form a vegetable oil-based polyol. A further embodiment of the present invention involves making a vegetable oil-based polyol using an epoxidized vegetable oil as the starting material. The epoxidized vegetable oil undergoes hydroxylation by the same process as outlined above. According to another aspect of the present invention, the vegetable oil-based polyol formed by the novel methods of this invention may be reacted with an isocyanate to form a polyurethane. Alternatively, a filler such as silica may be combined with the vegetable oil-based polyol before it is reacted with the isocyanate. These polyurethanes made from vegetable oil-based polyols may be used to form electroinsulating casting resins.
    • 通过向植物油中加入过氧酸而制备植物油性多元醇,其中所述过氧酸与所述植物油反应形成环氧化植物油,并将所述环氧化植物油加入到醇,水和催化量的氟硼酸的混合物中 以形成植物油基多元醇。 本发明的另一个实施方案涉及使用环氧化植物油作为原料制备植物油基多元醇。 环氧化植物油通过与上述相同的方法进行羟基化。 根据本发明的另一方面,通过本发明的新方法形成的植物油基多元醇可以与异氰酸酯反应形成聚氨酯。 或者,诸如二氧化硅的填料可以在与异氰酸酯反应之前与植物油基多元醇组合。 这些由植物油基多元醇制成的聚氨酯可用于形成电绝缘铸塑树脂。