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一种从乳酸低聚物中制备丙交酯的方法
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CN116425713B
Solve the problem of low removal rate
less side effects
本发明公开了一种从乳酸低聚物中制备丙交酯的方法,涉及合成产物分离提纯技术领域,该分离方法包括解聚、悬浮结晶、固液分离与洗涤、L‑丙交酯回收精馏及M‑丙交酯浓缩精馏处理过程。首先将低聚工序的乳酸低聚物先经过解聚反应得到粗丙交酯,然后经过悬浮结晶、固液混合、固液分离与洗涤提纯得到L‑丙交酯产品,再经过精馏得到M‑丙交酯产品,同时对系统的物料进行充分回收利用。本发明设计合理,可连续化分离出高质量纯度、高光学纯度、低游离酸值的丙交酯及异构体,并显著降低整个丙交酯制备工序的副反应、能耗及生产成本。
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JIANGSU HAWKWAY MASCH EQUIP CO LTD
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