公开(公告)号：US07297809B2

公开(公告)日：2007-11-20

申请号：US10537150

申请日：2003-12-05

申请人： Georges Martino-Gauchi ,  Rémy Teissier

发明人： Georges Martino-Gauchi ,  Rémy Teissier

IPC分类号： C07C69/66

CPC分类号： C07C67/08 ,  C07C69/68

摘要： The invention concerns a continuous method for preparing ethyl lactate by esterifying lactic acid with ethanol, in the presence of a catalyst which comprises reacting said lactic acid with ethanol in an initial ethanol/lactic acid mol ratio not less than 2.5, in the presence of a catalyst, at a reflux of the reaction medium of about 100° C. under absolute pressure ranging between 1.5 to 3 bars. Said method is characterized in that it comprises continuously extracting from the esterification reaction medium a near-azeotropic water/ethanol gas mixture: than dehydrating said gas mixture directly using molecular sieves, than recuperating from said dehydration an ethanol gas stream capable of being recycled to the esterification reaction medium and a flow consisting of water and ethanol which is subjected to distillation wherefrom is obtained water and an azeotropic water/ethanol mixture which is injected into the distillation column head of the gas mixture extracted from the esterification reaction medium; then in continuously extracting crude ethyl lactate which is subjected to purification wherefrom are obtained high purity ethyl lactate and heavy products.

摘要翻译： 本发明涉及一种通过在乙醇中酯化乳酸，在催化剂存在下制备乳酸乙酯的连续方法，该催化剂包括使所述乳酸与乙醇在乙醇/乳酸摩尔比的初始条件下不小于2.5，在 催化剂，在反应介质的回流下约100℃，绝对压力范围为1.5-3巴。 所述方法的特征在于，其包括从酯化反应介质中连续提取近共沸水/乙醇气体混合物：比使用分子筛直接脱水所述气体混合物，而不是从所述脱水中回收能够再循环到 酯化反应介质和由进行蒸馏的水和乙醇组成的流，得到水和共沸水/乙醇混合物，其被注入从酯化反应介质中提取的气体混合物的蒸馏塔头中; 然后连续提取经过纯化的粗乳酸乙酯，得到高纯度乳酸乙酯和重质产物。

公开(公告)号：US06274772B1

公开(公告)日：2001-08-14

申请号：US09598485

申请日：2000-06-22

申请人： Rémy Teissier ,  Georges Martino-Gauchi

发明人： Rémy Teissier ,  Georges Martino-Gauchi

IPC分类号： C07C4567

CPC分类号： C07C45/67 ,  C07C45/82 ,  C07C49/603

摘要： This invention relates to a continuous process for the manufacture of &bgr;-isophorone by isomerization under homogeneous catalysis of &agr;-isophorone. The process consists of introducing &agr;-isophorone and a solution of an alkaline hydroxide into a reaction region at a temperature ranging from 150° C. to 216° C., simultaneously removing by distillation a fraction comprising an amount by weight of &bgr;-isophorone ranging from 30% to 90%, drawing off the heavy products and then rectifying the fraction removed from the reaction mixture by distillation.

摘要翻译： 本发明涉及在α-异佛尔酮的均相催化下通过异构化生产β-异佛尔酮的连续方法。 该方法包括在150℃至216℃的温度范围内将α-异佛尔酮和碱性氢氧化物溶液引入反应区域，同时通过蒸馏除去包含重量百分比的β-异佛尔酮的馏分 从30％到90％，抽出重产物，然后通过蒸馏精馏从反应混合物中除去的馏分。

公开(公告)号：US06271171B1

公开(公告)日：2001-08-07

申请号：US09325809

申请日：1999-06-04

申请人： Rémy Teissier ,  Maurice Fournier

发明人： Rémy Teissier ,  Maurice Fournier

IPC分类号： B01J2110

CPC分类号： C07C45/72 ,  B01J21/10 ,  C07C45/74

摘要： The present invention relates to a process for obtaining a solid catalyst of general formula (I): [(Mg2+)1−x(Al3+)x(OH−)2]x+[(OH−)x]x−(H2O)n  (I) with 0.20≦x≦0.33 and n

摘要翻译： 本发明涉及获得通式（I）的固体催化剂的方法：其中0.20≤x≤0.33且n <1。

公开(公告)号：US06274771B1

公开(公告)日：2001-08-14

申请号：US09598484

申请日：2000-06-22

申请人： Francois Mongenet ,  Rémy Teissier

发明人： Francois Mongenet ,  Rémy Teissier

IPC分类号： C07C4567

CPC分类号： C07C45/67 ,  C07C45/82 ,  C07C49/603

摘要： For the continuous manufacture of &bgr;-isophorone by isomerization under homogeneous catalysis of &agr;-isophorone, the steps of introducing the &agr;-isophorone and a solution of an alkaline hydroxide into a reaction region, bringing the reaction mixture to reflux at a temperature at least equal to 150° C. under a equal P1 of less than or equal to atmospheric pressure, continuously and simultaneously removing from the reaction mixture: &bgr;-isophorone vapor, by distillation under a pressure P2 less than P1 and at a temperature at most equal to 150° C., and heavy products, at a rate, so that their content by weight is at most equal to 7% in the reaction mixture, and continuous returning the distillation to the reaction region.

摘要翻译： 对于在α-异佛尔酮的均相催化下通过异构化连续制造β-异佛尔酮的步骤，将α-异佛尔酮和碱性氢氧化物溶液引入反应区域，使反应混合物在至少相等的温度下回流 在小于或等于大气压的相等的P1下，连续并同时地从反应混合物中除去β-异佛尔酮蒸气：在小于P1的压力P2和在至多等于150的温度下蒸馏 °C和重质产物，使其在反应混合物中的重量含量至多等于7％，并将蒸馏物连续返回到反应区域。