-
公开(公告)号：US08692007B2
公开(公告)日：2014-04-08
申请号：US13128507
申请日：2009-11-10
申请人： Jean-Francois Devaux , Georges Martino-Gauchi , Patrice Iafrate , Patricia Balouin , Thibault Balouin , Jeremie Balouin
IPC分类号： C11C3/00
摘要： The present invention relates to a method for the transesterification of a hydroxylated oil including two consecutive transesterification steps performed in the presence of a light alcohol (methanol or ethanol) and a basic catalyst under temperature, pressure and alcohol/oil weight ratio conditions enabling the nearly total conversion of the hydroxylated oil into fatty acid esters. Characteristically, a resulting directly from the first transestrefication step in order to obtain a reaction mixture including, in particular, hydroxylated fatty acid esters and glycerol. Said reaction mixture is subjected to a separation step that makes it possible to obtain a less dense phase predominantly consisting of fatty esters and a denser phase predominantly consisting of glycerol and water and fatty acid soaps. The second transesterification step is performed on the less dense phase, with said light alcohol and said basic catalyst are added thereto.
摘要翻译： 本发明涉及羟基化油的酯交换方法，包括在轻质醇（甲醇或乙醇）和碱性催化剂存在下，在温度，压力和醇/油重量比条件下进行的两个连续酯交换步骤，使得能够接近 将羟基化油总转化为脂肪酸酯。 特征在于，直接从第一经过透反射步骤获得反应混合物，特别是包括羟基化脂肪酸酯和甘油的反应混合物。 所述反应混合物进行分离步骤，使得可以获得主要由脂肪酯组成的较不致密的相和主要由甘油和水以及脂肪酸皂构成的致密相。 第二酯交换步骤在较不致密的相上进行，所述轻质醇和所述碱性催化剂加入其中。
-
2.发明授权Method of preparing dimethylcetene and, subsequently, polydimethylcetene from isobutyric anhydride 失效从异丁酸酐制备二甲基十六烯，然后制备聚二甲基鲸烯的方法公开(公告)号：US07435856B2
公开(公告)日：2008-10-14
申请号：US10545977
申请日：2004-02-20
IPC分类号： C07C45/87
摘要： The present invention relates to a process for the preparation of dimethylketene (DMK) and then of polydimethylketene (PDMK) by polymerization of DMK. More specifically, the DMK is obtained by pyrolysis by isobutyric anhydride (IBAN), the latter decomposing under the effect of heat (pyrolysis) to give isobutyric acid (IBA) and DMK. One mole of pyrolyzed IBAN gives one mole of IBA and one mole of DMK.
摘要翻译： 本发明涉及通过DMK的聚合制备二甲基烯酮（DMK），然后制备聚二甲基烯酮（PDMK）的方法。 更具体地说，DMK是通过异丁酸酐（IBAN）的热解得到的，后者在热（热解）的作用下分解，得到异丁酸（IBA）和DMK。 1摩尔热解的IBAN得到1摩尔IBA和1摩尔DMK。
-
公开(公告)号：US20060014976A1
公开(公告)日：2006-01-19
申请号：US10537150
申请日：2003-12-05
IPC分类号： C07C67/08
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 consists in 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 consists in continuously extracting from the esterification reaction medium a near-azeotropic water/ethanol gas mixture; then in dehydrating said gas mixture directly using molecular sieves, then 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，所述催化剂包括在初始乙醇/乳酸摩尔比不小于2.5时使所述乳酸与乙醇反应， 催化剂，在反应介质的回流下，在绝对压力范围为1.5至3巴之间约100℃。 所述方法的特征在于其从酯化反应介质中连续提取近共沸水/乙醇气体混合物; 然后使用分子筛直接使所述气体混合物脱水，然后从所述脱水中回收能够再循环到酯化反应介质的乙醇气流和由水和乙醇组成的流，其中得到水和共沸水 /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：US20120142953A1
公开(公告)日：2012-06-07
申请号：US13128507
申请日：2009-11-10
IPC分类号： C11C1/00
摘要： The present invention relates to a method for the transesterification of a hydroxylated oil including two consecutive transesterification steps performed in the presence of a light alcohol (methanol or ethanol) and a basic catalyst under temperature, pressure and alcohol/oil weight ratio conditions enabling the nearly total conversion of the hydroxylated oil into fatty acid esters. Characteristically, a resulting directly from the first transestrefication step in order to obtain a reaction mixture including, in particular, hydroxylated fatty acid esters and glycerol. Said reaction mixture is subjected to a separation step that makes it possible to obtain a less dense phase predominantly consisting of fatty esters and a denser phase predominantly consisting of glycerol and water and fatty acid soaps. The second transesterification step is performed on the less dense phase, with said light alcohol and said basic catalyst are added thereto.
摘要翻译： 本发明涉及羟基化油的酯交换方法，包括在轻质醇（甲醇或乙醇）和碱性催化剂存在下，在温度，压力和醇/油重量比条件下进行的两个连续酯交换步骤，使得能够接近 将羟基化油总转化为脂肪酸酯。 特征在于，直接从第一经过透反射步骤获得反应混合物，特别是包括羟基化脂肪酸酯和甘油的反应混合物。 所述反应混合物进行分离步骤，使得可以获得主要由脂肪酯组成的较不致密的相和主要由甘油和水以及脂肪酸皂构成的致密相。 第二酯交换步骤在较不致密的相上进行，所述轻质醇和所述碱性催化剂加入其中。
-
公开(公告)号：US08088942B2
公开(公告)日：2012-01-03
申请号：US12298568
申请日：2007-04-27
IPC分类号： C07C69/96
CPC分类号： C07C409/34 , C07C407/00 , C07C409/04 , C07C409/10 , C07C409/22 , C07C409/24 , C07C409/38
摘要： The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.
摘要翻译： 本发明涉及使用具有高热交换能力的板式换热器连续制备选择的有机过氧化物的方法。
-
公开(公告)号：US20090182162A1
公开(公告)日：2009-07-16
申请号：US12298568
申请日：2007-04-27
IPC分类号： C07C409/34 , C07C409/24
CPC分类号： C07C409/34 , C07C407/00 , C07C409/04 , C07C409/10 , C07C409/22 , C07C409/24 , C07C409/38
摘要： The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.
摘要翻译： 本发明涉及使用具有高热交换能力的板式换热器连续制备选择的有机过氧化物的方法。
-
公开(公告)号：US07297809B2
公开(公告)日：2007-11-20
申请号：US10537150
申请日：2003-12-05
IPC分类号： C07C69/66
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。
-
8.发明授权Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-one(&bgr;-isophorone) 失效用于制造3,5,5-三甲基环己-3-烯（β-异佛尔酮）的连续方法公开(公告)号：US06274772B1
公开(公告)日：2001-08-14
申请号：US09598485
申请日：2000-06-22
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。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.01 秒)
