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    • 5. 发明授权
    • Stabilization method of vinyl compound with hydroxy group and
composition containing such vinyl compound
    • 具有羟基的乙烯基化合物的稳定化方法和含有这种乙烯基化合物的组合物
    • US5760278A
    • 1998-06-02
    • US711206
    • 1996-09-09
    • Koichi NakagawaMitsuaki MakinoYuichi Kita
    • Koichi NakagawaMitsuaki MakinoYuichi Kita
    • C07C67/62C07C253/32C07C255/15C07C69/73
    • C07C255/15C07C253/32C07C67/62
    • A stabilization method of a vinyl compound with hydroxy group of an improved stability is achieved by preventing it from being denatured on storage, transportation, manufacturing process while maintaining its reactivity. A composition containing the vinyl compound with hydroxy group of an improved stability is obtained by the described stabilization method. The stabilization method is characterized by coexisting a vinyl compound with hydroxy group of formula (1), a primary antioxidant, alcohol and/or water, ##STR1## wherein R is a hydrogen atom or an organic residue, X is a --CN group, a --COR.sub.0 group or a --COOR.sub.0 group, and R.sub.0 is a hydrogen atom or an organic residue. In this stabilization method, not less than 50 ppm of alcohol and/or water is added with respect to the vinyl compound with hydroxy group. The stabilization method may be achieved by coexisting the above-defined vinyl compound with hydroxy group, the primary antioxidant and organic acid. In this case, not less than 10 ppm of organic acid is added to the vinyl compound with hydroxy group.
    • 通过防止在保存其反应性的同时在储存,运输,制造过程中变性而实现具有改善的稳定性的具有羟基的乙烯基化合物的稳定方法。 通过所述的稳定化方法可获得含有具有改进的稳定性的羟基的乙烯基化合物的组合物。 稳定化方法的特征在于将乙烯基化合物与式(1)的羟基,主要抗氧化剂,醇和/或水共存,其中R是氢原子或有机残基,X是 - CN基团,-COR0基团或-COOR0基团,R0为氢原子或有机残基。 在该稳定化方法中,相对于具有羟基的乙烯基化合物,不少于50ppm的醇和/或水被添加。 稳定化方法可以通过将上述定义的乙烯基化合物与羟基,主要抗氧化剂和有机酸共存来实现。 在这种情况下,向具有羟基的乙烯基化合物中加入不少于10ppm的有机酸。