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公开(公告)号：US09963417B2
公开(公告)日：2018-05-08
申请号：US15037212
申请日：2014-12-11
CPC分类号： C07C67/39 , B01J23/892 , C07C45/75 , Y02P20/582 , C07C69/54
摘要： The present invention relates to a catalytic continuous process for producing methyl methacrylate, said process comprising the step of reacting methacrolein with oxygen and methanol in the presence of a heterogeneous noble-metal-containing catalyst in an oxidative esterification reaction to give methyl methacrylate, characterized in that the stationary concentration of the starting material methacrolein is equal to or less than 12% by weight based on the total weight of the reaction mixture in the reactor, and the ratio F between the total liquid volume within the reactor expressed in liters divided by the total weight of catalyst in the reactor expressed in kilograms is equal to or less than 4.
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公开(公告)号：US20150045577A1
公开(公告)日：2015-02-12
申请号：US14384273
申请日：2013-03-06
申请人： Arndt Selbach , Lorenza Sartorelli , Andreas Perl , Joachim Deinken , Stefanie Sohnemann , Norbert Mnich , Matthias Groemping , Udo Gropp , Thomas Mertz
发明人： Arndt Selbach , Lorenza Sartorelli , Andreas Perl , Joachim Deinken , Stefanie Sohnemann , Norbert Mnich , Matthias Groemping , Udo Gropp , Thomas Mertz
CPC分类号： C07C67/22 , B01J4/008 , B01J19/0013 , B01J19/1868 , B01J19/2415 , B01J2219/00033 , B01J2219/30261 , B01J2219/30265 , C07C51/06 , C07C51/08 , C07C51/377 , C07C231/06 , C07C253/30 , C07C57/04 , C07C233/09 , C07C255/08
摘要： The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).
摘要翻译： 本发明涉及在用于制备甲基丙烯酸（MAA）或甲基丙烯酸甲酯（MMA）的ACH硫酸法中用硫酸水解丙酮氰醇（ACH）的方法。
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3.发明授权公开(公告)号：US10232353B2
公开(公告)日：2019-03-19
申请号：US15543291
申请日：2015-12-29
IPC分类号： B01J23/02 , B01J23/04 , B01J23/10 , B01J23/14 , B01J23/18 , B01J23/34 , B01J23/52 , B01J23/66 , B01J23/68 , B01J23/89 , B01J35/00 , B01J35/02 , B01J35/08 , B01J37/02 , B01J37/04 , C07C67/39 , C07C69/54
摘要： Catalysts for oxidative esterification can be used, for example, for converting (meth)acrolein to methyl (meth)acrylate. The catalysts are especially notable for high mechanical and chemical stability even over very long time periods, including activity and/or selectivity relatively in continuous operation in media having even a small water content.
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公开(公告)号：US07423173B2
公开(公告)日：2008-09-09
申请号：US10589123
申请日：2005-01-21
CPC分类号： C07C51/06 , C07C51/08 , C07C51/377 , C07C59/01 , C07C57/04
摘要： The invention relates to a process for the selective, economically viable preparation of methacrylic acid and methacrylic esters starting from acetone cyanohydrin, wherein, in a first step, 2-hydroxy-2-methylpropionic acid is prepared by reacting acetone cyanohydrin with sulphuric acid in the presence of water and a suitable polar solvent and is isolated and methacrylic acid is subsequently prepared by β-elimination of water starting from 2-hydroxy-2-methylpropionic acid.
摘要翻译： 本发明涉及从丙酮氰醇开始选择性地，经济上有效地制备甲基丙烯酸和甲基丙烯酸酯的方法，其中在第一步中，2-羟基-2-甲基丙酸是通过使丙酮氰醇与硫酸在 存在水和合适的极性溶剂，并分离，随后通过从2-羟基-2-甲基丙酸开始β-去除水来制备甲基丙烯酸。
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5.发明申请METHOD FOR PRODUCING METHACROLEIN AND THE CONDITIONING/DRAINING THEREOF FOR DIRECT OXIDATIVE ESTERIFICATION 有权用于生产甲基纤维素的方法及其用于直接氧化固化的调节/排出公开(公告)号：US20160200660A1
公开(公告)日：2016-07-14
申请号：US14916440
申请日：2014-08-27
CPC分类号： C07C45/75 , C07C45/80 , C07C45/82 , C07C45/84 , C07C67/39 , C07C67/54 , C07C69/54 , C07C47/22
摘要： The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein and the preparation of methacrolein. It is a feature of this novel process that it was possible to distinctly increase the yield and the efficiency of the process compared to the prior art through a sequence of different distillation steps.
摘要翻译： 本发明涉及通过甲基丙烯醛的直接氧化酯化和甲基丙烯醛的制备来制备甲基丙烯酸甲酯的方法。 这种新方法的一个特征是，通过不同蒸馏步骤的顺序，与现有技术相比，有可能明显提高该方法的产率和效率。
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公开(公告)号：US20170144960A1
公开(公告)日：2017-05-25
申请号：US15323888
申请日：2015-07-23
CPC分类号： C07C67/20 , B01J21/066 , C01C1/08 , C01C3/02 , C07C69/675
摘要： The present invention relates to a process for preparing alpha-hydroxycarboxylic esters from the alcoholysis of alpha-hydroxycarboxam ides in the gas phase, characterized in that the conversion is effected in the presence of water.
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公开(公告)号：US09617199B2
公开(公告)日：2017-04-11
申请号：US15030775
申请日：2014-12-05
申请人： Steffen Krill , Alexander Lygin , Torsten Balduf , Rudolf Burghardt , Andreas Tepperis , Matthias Groemping
发明人： Steffen Krill , Alexander Lygin , Torsten Balduf , Rudolf Burghardt , Andreas Tepperis , Matthias Groemping
CPC分类号： C07C67/39 , B01J23/02 , B01J23/892 , B01J35/0006 , B01J35/0013 , Y02P20/582 , C07C69/54
摘要： The present invention relates to a process for preparing methyl methacrylate by a direct oxidative esterification of methacrolein with oxygen and methanol, which is conducted in the liquid phase at a pressure of 2 to 100 bar with a gold catalyst. According to the invention, the liquid phase is withdrawn continuously from the reactor and optionally enriched with oxygenous gas, the pH, after the withdrawal, is adjusted to a pH between 5 and 9 by means of addition of a basic solution and this liquid phase is conducted back into the reactor again to an extent of at least 50%.
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公开(公告)号：US09458083B2
公开(公告)日：2016-10-04
申请号：US14384273
申请日：2013-03-06
申请人： Arndt Selbach , Lorenza Sartorelli , Andreas Perl , Joachim Deinken , Stefanie Sohnemann , Norbert Mnich , Matthias Groemping , Udo Gropp , Thomas Mertz
发明人： Arndt Selbach , Lorenza Sartorelli , Andreas Perl , Joachim Deinken , Stefanie Sohnemann , Norbert Mnich , Matthias Groemping , Udo Gropp , Thomas Mertz
IPC分类号： B01J19/18 , B01J19/24 , C07C231/06 , C07C253/30 , C07C51/06 , C07C51/08 , C07C51/377 , C07C67/22 , B01J19/00 , B01J4/00
CPC分类号： C07C67/22 , B01J4/008 , B01J19/0013 , B01J19/1868 , B01J19/2415 , B01J2219/00033 , B01J2219/30261 , B01J2219/30265 , C07C51/06 , C07C51/08 , C07C51/377 , C07C231/06 , C07C253/30 , C07C57/04 , C07C233/09 , C07C255/08
摘要： The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).
摘要翻译： 本发明涉及在用于制备甲基丙烯酸（MAA）或甲基丙烯酸甲酯（MMA）的ACH硫酸法中用硫酸水解丙酮氰醇（ACH）的方法。
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公开(公告)号：US20120010430A1
公开(公告)日：2012-01-12
申请号：US13256638
申请日：2010-03-26
申请人： Lorenza Sartorelli , Andreas Perl , Udo Gropp , Arndt Selbach , Stefanie Sohnemann , Matthias Groemping , Norbert Mnich , Thomas Mertz
发明人： Lorenza Sartorelli , Andreas Perl , Udo Gropp , Arndt Selbach , Stefanie Sohnemann , Matthias Groemping , Norbert Mnich , Thomas Mertz
IPC分类号： C07C231/14 , E03B7/07 , B01J19/00
CPC分类号： C07C231/06 , B01J4/002 , B01J4/02 , B01J2204/002 , Y10T137/8158 , C07C233/09
摘要： The present invention relates to an apparatus for metering flowable media or gases, and to the use thereof.
摘要翻译： 本发明涉及一种用于计量可流动介质或气体的设备及其用途。
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公开(公告)号：US09890105B2
公开(公告)日：2018-02-13
申请号：US14784320
申请日：2014-04-11
申请人： Steffen Krill , Torsten Balduf , Martin Koestner , Matthias Groemping , Alexander Lygin , Rudolf Burghardt
发明人： Steffen Krill , Torsten Balduf , Martin Koestner , Matthias Groemping , Alexander Lygin , Rudolf Burghardt
摘要： The present invention relates to a process for producing methyl methacrylate, comprising the following steps: A) producing methacrolein and B) reacting the methacrolein obtained in step A) in an oxidative esterification reaction to give methyl methacrylate, characterized in that the two steps A) and B) take place in a liquid phase at a pressure of from 2 to 100 bar, and step B) is carried out in the presence of a heterogeneous noble-metal-containing catalyst comprising metals and/or comprising metal oxides.
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