젖산으로부터 락타이드의 직접적 제조방법 및 이에 사용되는 촉매
    4.
    发明公开
    젖산으로부터 락타이드의 직접적 제조방법 및 이에 사용되는 촉매 有权
    从酸乳酸生产直接乳液的方法及其使用的催化剂

    公开(公告)号:KR1020140024188A

    公开(公告)日:2014-02-28

    申请号:KR1020120090883

    申请日:2012-08-20

    Abstract: The present invention relates to a method for directly producing lactide from lactic acid aqueous solution using a solid catalyst containing tin, lead, or a mixture of them and the catalyst used for the method. According to the present invention, the lactide can be directly produced without a step for producing a prepolymer and the loss of the lactic acid is less than using a catalyst used for producing the lactide with a traditional technique, the rate of the lactic acid converting into the lactide and the selectivity to optically pure lactide are high, and the lifespan of the catalyst can be lengthened, thereby reducing the costs for producing the lactide from the lactic acid and increasing the productivity of the lactide.

    Abstract translation: 本发明涉及使用含有锡,铅或它们的混合物的固体催化剂和用于该方法的催化剂从乳酸水溶液直接生产丙交酯的方法。 根据本发明,丙交酯可以直接制备而不用制备预聚物的步骤,并且乳酸的损失小于使用用于制备丙交酯的催化剂,其传统技术是将乳酸转化成 丙交酯和对光学纯丙交酯的选择性高,催化剂的寿命可以延长,从而降低了从乳酸生产丙交酯的成本并提高了丙交酯的生产率。

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