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公开(公告)号：US20050080201A1
公开(公告)日：2005-04-14
申请号：US10503375
申请日：2003-01-31
申请人： Remy Teissier , Serge Tretjak , Elie Burtin
发明人： Remy Teissier , Serge Tretjak , Elie Burtin
CPC分类号： B01J19/2465 , B01D3/009 , B01J19/24 , B01J2219/00094 , B01J2219/00182 , C07C67/08 , Y02P20/127 , C07C69/68
摘要： The invention concerns a method for continuously producing a dimmer-rich and tri-mer rich oligomeric lactic acid composition, starting with a lactic composition by eliminating water from said lactic acid composition. The invention is characterized in that it consists in: carrying out said elimination in an adiabatic reactor provided with a recycling loop, continuously introducing a lactic acid composition in a circulating starter reaction medium being brought to a temperature ranging between 120° C. and 180° C. and in eliminating the water vapour form.
摘要翻译： 本发明涉及连续生产富二醇和三聚体低聚乳酸组合物的方法，其通过从所述乳酸组合物中除去水由乳酸组合物开始。 本发明的特征在于：在具有循环回路的绝热反应器中进行所述消除，将循环起始反应介质中的乳酸组合物连续引入温度范围为120℃至180℃ 并消除水蒸气形式。
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公开(公告)号：US20060041165A1
公开(公告)日：2006-02-23
申请号：US10537422
申请日：2003-12-05
申请人： Serge Tretjak , Elie Burtin , Remy Teissier
发明人： Serge Tretjak , Elie Burtin , Remy Teissier
IPC分类号： C07C69/68
摘要： The invention relates to a continuous method of preparing ethyl lactate by means of lactic acid esterification using ethanol in the presence of a catalyst. The inventive method consists in continuously extracting a mixture comprising ethyl lactate, ethanol, water and different heavy products from an esterification reaction medium at partial lactic acid conversion rate and, subsequently, subjecting said mixture to a reduced-pressure flash separation, thereby producing an overhead stream containing a mixture of ethyl lactate, ethanol and water, the lower part of said mixture supplying a fractional distillation column.
摘要翻译： 本发明涉及通过在催化剂存在下使用乙醇进行乳酸酯化制备乳酸乙酯的连续方法。 本发明的方法包括以部分乳酸转化率从酯化反应介质连续提取包含乳酸乙酯，乙醇，水和不同重质产物的混合物，随后将所述混合物进行减压闪蒸分离，由此产生塔顶 含有乳酸乙酯，乙醇和水的混合物，所述混合物的下部供应分馏塔。
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