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    Improved metallic soaps of fatty acids for use as photolyzing agents for photodegradable polymer films
    1.
    发明授权
    Improved metallic soaps of fatty acids for use as photolyzing agents for photodegradable polymer films 失效
    改进的脂肪酸金属皂用作可光降解聚合物膜的光解剂

    公开(公告)号：US5434277A

    公开(公告)日：1995-07-18

    申请号：US22962

    申请日：1993-04-02

    申请人： Herng-Dar Hwu ,  Hung Y. Hsu ,  Jian-Hong Chen ,  Shu-Fang Jiang

    发明人： Herng-Dar Hwu ,  Hung Y. Hsu ,  Jian-Hong Chen ,  Shu-Fang Jiang

    IPC分类号： C07C51/41 ,  C07F19/00

    CPC分类号： C07C51/412

    摘要： A method for the preparation of metallic salts of fatty acids comprising the steps of: (a) reacting alkali hydroxide with a fatty acid in a saponification reaction to form an alkali soap; (b) reacting the alkali soap with an aqueous metallic salt solution in a double decomposition reaction to cause the production of metallic fatty acid salt; (c) performing at least one cycle of an alternating alkalinization-acidization reaction by adding an aqueous alkali hydroxide solution to the metallic fatty acid salt to raise the solution pH, followed by adding an acidic aqueous salt solution contain the same metal ions to lower the solution pH. High purity metallic salts of fatty acids can be obtained without a solvent washing step and the metallic fatty acid salts prepared from this invention can be effectively used as photolyzing agent to initiate and/or accelerate the photo-degradation of plastics.

    摘要翻译： 一种制备脂肪酸金属盐的方法，包括以下步骤：（a）在皂化反应中使碱金属氢氧化物与脂肪酸反应形成碱性皂; （b）在双重分解反应中使碱性皂与金属盐水溶液反应，以产生金属脂肪酸盐; （c）通过向金属脂肪酸盐中加入碱金属氢氧化物水溶液进行交替碱化 - 酸化反应的至少一个循环以提高溶液的pH，然后加入含有相同金属离子的酸性盐水溶液以降低 溶液pH值。 不用溶剂洗涤步骤即可获得高纯度的脂肪酸金属盐，并且由本发明制备的金属脂肪酸盐可有效地用作光引发剂以引发和/或加速塑料的光降解。