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    PROCÉDÉ CONTINU D'OBTENTION D'UN ESTER LACTIQUE
    41.
    发明授权
    PROCÉDÉ CONTINU D'OBTENTION D'UN ESTER LACTIQUE 有权
    连续工艺，获得乳酸酯

    公开(公告)号：EP2321251B1

    公开(公告)日：2012-02-29

    申请号：EP09780717.6

    申请日：2009-07-16

    申请人： Galactic S.A.

    发明人： HOTTOIS, Delphine ,  BRUNEAU, Alexandre ,  BOGAERT, Jean-Christophe ,  COSZACH, Philippe

    IPC分类号： C07C67/08 ,  C07C67/54 ,  C07C69/68

    CPC分类号： C07C67/08 ,  C07C67/54 ,  C07C69/68

    摘要： A continuous process for obtaining a lactic ester, characterized in that it comprises the following steps: a) reaction for esterification of a composition comprising an alcohol in the presence of a composition comprising lactic acid in excess; b) extraction of a vapour phase of this reaction medium, loaded with lactic ester, alcohol, water and traces of lactic acid; c) distillation of the vapour phase obtained in step b) so as to recover the lactic ester, the alcohol and the water at the top; d) distillation of the fraction obtained in step c) so as to recover the purified lactic ester at the bottom.

    METHOD FOR PRODUCING (METH)ACRYLATE ESTER
    42.
    发明公开
    METHOD FOR PRODUCING (METH)ACRYLATE ESTER 有权
    VERFAHREN ZUR HERSTELLUNG VON（METH）丙烯酸酯

    公开(公告)号：EP2399898A1

    公开(公告)日：2011-12-28

    申请号：EP10738589.0

    申请日：2010-02-04

    申请人： Mitsubishi Rayon Co., Ltd.

    发明人： ANSAI, Ryuichi ,  NOGAMI, Hiroyuki ,  OGURA, Kuniyoshi

    IPC分类号： C07C67/08 ,  C07C67/54 ,  C07C69/54

    CPC分类号： C07C67/08 ,  C07C67/54 ,  C07C69/54

    摘要： Disclosed is a method for producing a (meth)acrylate ester wherein a high purity (meth)acrylate ester is obtained with a high yield, with a reduced loss of (meth)acrylic acid anhydride. In the method, (meth)acrylic acid is recovered with a high yield, and the (meth)acrylate ester is purified easily. Specifically disclosed is a method for producing a (meth)acrylate ester which comprises: (1) a step of producing (meth)acrylic acid anhydride by reacting a specific fatty acid anhydride and (meth)acrylic acid, while removing a by-produced fatty acid; (2) a step of obtaining a (meth)acrylate ester by reacting an alcohol and unpurified (meth)acrylic acid anhydride obtained in step (1) preferably at a temperature not less than 90 °C; and (3) a step of recovering (meth)acrylic acid by distillation preferably at a temperature not less than 90 °C. The method may also comprise a step of heating or distilling the reaction liquid obtained in step (2) at a temperature not less than 90 °C.

    摘要翻译： 公开了一种（甲基）丙烯酸酯的制造方法，其中以高收率获得高纯度（甲基）丙烯酸酯，并减少（甲基）丙烯酸酐的损失。 在该方法中，以高收率回收（甲基）丙烯酸，容易地纯化（甲基）丙烯酸酯。 具体公开了一种（甲基）丙烯酸酯的制造方法，其特征在于：（1）通过使特定的脂肪酸酐和（甲基）丙烯酸反应，同时除去副产物的脂肪 酸; （2）优选在不低于90℃的温度下使醇与步骤（1）中得到的未纯化（甲基）丙烯酸酐反应得到（甲基）丙烯酸酯的步骤; 和（3）优选在不低于90℃的温度下通过蒸馏回收（甲基）丙烯酸的步骤。 该方法还可以包括在不低于90℃的温度下加热或蒸馏步骤（2）中获得的反应液体的步骤。

    AUFARBEITUNGSVERFAHREN BEI DER HERSTELLUNG VON (METH)ACRYLSÄUREALKYLESTERN
    43.
    发明公开
    AUFARBEITUNGSVERFAHREN BEI DER HERSTELLUNG VON (METH)ACRYLSÄUREALKYLESTERN 有权
    （甲基）丙烯酸烷基酯的制造处理过程

    公开(公告)号：EP2364288A1

    公开(公告)日：2011-09-14

    申请号：EP09752784.0

    申请日：2009-11-04

    申请人： Evonik Stockhausen GmbH

    发明人： MOSLER, Jürgen ,  KUPPINGER, Franz-Felix

    IPC分类号： C07C67/08 ,  C07C67/54 ,  C07C67/58 ,  C07C69/54 ,  C08F265/04

    CPC分类号： C07C67/08 ,  C07C67/60 ,  C08F220/18 ,  C07C69/54

    摘要： The invention relates to a method for producting a high-purity (meth)acrylic acid alkyl ester phase, comprising the process steps: I) reacting an alcohol phase with a (meth)acrylic acid phase in the presence of an esterification catalyst to obtain a (meth)acrylic acid alkyl ester phase; II) separating by distillation at least part of the water present in the (meth)acrylic acid alkyl ester phase to obtain an arid (meth)acrylic acid alkyl ester phase comprising the (meth)acrylic acid alkyl ester, and an aqueous overhead product; III) separating the aqueous overhead product into an organic phase and a process wastewater phase; IV) further purifying the arid (meth)acrylic acid alkyl ester phase comprising the (meth)acrylic acid alkyl ester by a purification method comprising an alkaline reactive extraction step to obtain - a purified (meth)acrylic acid alkyl ester phase and - a secondary component phase comprising an alkali salt; V) freeing the purified (meth)acrylic acid alkyl ester phase from additional secondary products to obtain a high-purity (meth)acrylic acid alkyl ester phase; wherein at least one of the following alternatives i) or ii), preferably i) and ii), applies; i) the secondary component phase comprising alkali salt is supplied to a combustion unit, wherein the secondary component phase comprising the alkali salt of the process wastewater phase is purified before being supplied to the combustion unit at a maximum of 50% by weight/hour, based on the volume of the secondary component phase comprising alkali salts developing in an hour; ii) the process wastewater phase is supplied for purification to a wastewater treatment system after separating at least part of the non-reacted alcohol still present in the process wastewater phase, wherein the process wastewater phase is purified, before being supplied to the wastewater treatment system at a maximum of 50% by weight/hour, based on the volume of process wastewater phase developing in hour, with the secondary component phase comprising the alkali salt. The invention also relates to the use of a process wastewater phase, a high-purity (meth)acrylic acid alkyl ester phase, to a method for producing a polymer based on (meth)acrylic acid alkyl esters, and to the (meth)acrylic acid alkyl ester-based polymer obtained by said method.

    VERFAHREN UND ANLAGE ZUR AUFREINIGUNG VON UNGESÄTTIGTEN VERBINDUNGEN
    46.
    发明公开
    VERFAHREN UND ANLAGE ZUR AUFREINIGUNG VON UNGESÄTTIGTEN VERBINDUNGEN 有权
    方法和系统进行净化的不饱和化合物

    公开(公告)号：EP2209760A1

    公开(公告)日：2010-07-28

    申请号：EP08803358.4

    申请日：2008-08-29

    申请人： Evonik Röhm GmbH

    发明人： LAUX, Benedikt ,  MAUL, Christian ,  SCHLEEP, Volker ,  SANDER, Ingo

    IPC分类号： C07C67/54 ,  C07C69/54 ,  B01D1/22

    CPC分类号： B01D1/0088 ,  B01D1/0094 ,  B01D1/22 ,  C07C67/54 ,  C07C69/54

    摘要： The invention relates to a method for purifying unsaturated compounds, wherein the purification is carried out in a plant with at least two evaporators and the evaporators are connected such that a part of the unsaturated compound runs in a circuit wherein the vapour condensed in the first evaporator is isolated and the vapour condensed in the second evaporator is introduced into the first evaporator, characterised in that the mass flow with which the condensed vapours in the first evaporator are isolated from the mixture for purifying is less than the mass flow with which the condensed vapours from the second evaporator are introduced into the first evaporator. The invention further relates to a plant for carrying out said method, comprising at least three evaporators connected to each other such that the residue in the liquid state from the first evaporator can be introduced into the second condenser, the condensed vapours from the second evaporator can be introduced into the first evaporator and the liquid phase residue in the second evaporator can be introduced into the third evaporator and the condensed vapours from the third evaporator cab introduced into second evaporator.

    METHOD FOR PURIFICATION OF OPTICALLY ACTIVE -FLUOROCARBOXYLIC ACID ESTERS
    47.
    发明公开
    METHOD FOR PURIFICATION OF OPTICALLY ACTIVE -FLUOROCARBOXYLIC ACID ESTERS 有权
    VERFAHREN ZUR AUFREINIGUNG VON OPTISCH AKTIVENFLUORCARBONSÄUREESTERN

    公开(公告)号：EP2189438A1

    公开(公告)日：2010-05-26

    申请号：EP08792202.7

    申请日：2008-08-05

    申请人： Central Glass Company, Limited

    发明人： Akihiro ISHII ,  Hideyuki TSURUTA ,  Yuzuru MORINO ,  Mikihiro TAKAHASHI

    IPC分类号： C07C67/54 ,  C07C67/307 ,  C07C67/62 ,  C07C69/63 ,  C07B53/00 ,  C07B57/00 ,  C07B61/00

    CPC分类号： C07B53/00 ,  C07B57/00 ,  C07C67/307 ,  C07C67/54 ,  C07C69/63

    摘要： Disclosed is a purification method of reducing and removing fluoride ions contained in an optically active α-fluorocarboxylic acid ester represented by formula [1]

    [in the formula, R 1 represents a C 1-6 alkyl group, R 2 represents a C 1-4 alkyl group, and * represents an asymmetric carbon], the purification method of the optically active α-fluorocarboxylic acid ester being characterized by that a distillation is conducted in the presence of an organic base. By this method, it is possible to greatly reduce the concentration of fluoride ion traces contained in the optically active α-fluorocarboxylic acid ester by a relatively easy operation. Of the organic base, a tertiary amine is preferable, and above all tri-n-butylamine is particularly preferable.

    摘要翻译： 公开了通式[1]表示的光学活性的± - 氟代羧酸酯中所含的氟离子的除去和除去的净化方法[式中，R 1表示C 1-6烷基，R 2表示C 1- 4烷基，*表示不对称碳]，光学活性的± - 氟代羧酸酯的纯化方法的特征在于在有机碱的存在下进行蒸馏。 通过该方法，可以通过相对容易的操作大大降低光学活性的± - 氟代羧酸酯中所含的氟离子痕迹的浓度。 在有机碱中，优选叔胺，特别优选三正丁胺。

    VERFAHREN ZUR HERSTELLUNG VON METHACRYLSÄURE ALKYLESTERN MITTELS AZEOTROPER DESTILLATION
    48.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON METHACRYLSÄURE ALKYLESTERN MITTELS AZEOTROPER DESTILLATION 有权
    PROCESS FOR通过共沸蒸馏制备甲基烷基酯

    公开(公告)号：EP2051957A1

    公开(公告)日：2009-04-29

    申请号：EP07866279.8

    申请日：2007-08-31

    申请人： Evonik Röhm GmbH

    发明人： GROPP, Udo ,  WEBER, Robert ,  SCHÄFER, Thomas ,  PERL, Andreas ,  SING, Rudolf ,  MERTZ, Thomas

    IPC分类号： C07C67/20 ,  C07C69/54 ,  C07C67/54

    CPC分类号： C07C231/06 ,  B01D3/36 ,  C07C67/20 ,  C07C67/54 ,  C07C69/54 ,  C07C233/09

    摘要： The invention generally relates to a method for producing methacrylic alkyl esters, comprising the following steps: providing an acetone cyanhydrin by way of a method according to one of the preceding claims; contacting the acetone cyanhydrin with an inorganic acid, thereby obtaining a methacrylamide; contacting the methacrylamide with an alcohol in the presence of an inorganic acid in a reactor, thereby obtaining a methacrylic alkyl ester; continuously discharging at least part of the methacrylic alkyl ester from the reactor as the vapor stream to a distillation column; the discharge taking place by feeding a vapor-containing discharge stream to the reactor. The invention also relates to a device for producing methacrylic alkyl esters, to a method for producing polymers that are at least partially based on methacrylic alkyl esters, to the use of the methacrylic alkyl esters obtainable by the method according to the invention in chemical products, and to chemical products that are based on the methacrylic alkyl esters obtainable by the method according to the invention.