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1.发明授权A method for inhibiting polymerization of (Meth) acrylic acid and its esters using an inhibitor and a process for making a compound useful as such an inhibitor 有权对于（甲基）聚合抑制和它们的酯丙烯酸方法适合Verwendng下制备的化合物作为抑制剂的抑制剂和过程
公开(公告)号：EP1647543B1
公开(公告)日：2007-05-02
申请号：EP05256155.2
申请日：2005-09-30
发明人： Bass, Steven , Mason, Robert Michael , Mendoza, Joy Lindon , Skoog, Steven John , Vandersall, Mark T.
IPC分类号： C07C51/50 , C07C57/04 , C07D279/18
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公开(公告)号：EP1065197A1
公开(公告)日：2001-01-03
申请号：EP00304961.6
申请日：2000-06-13
发明人： Hale, Timothy Allen , Mason, Robert Michael , Chapman, Josefina Tseng , Day, James Clarence , Tsay, Chorng Shyuan
IPC分类号： C07C57/07
摘要： This invention relates to a process for preparing (meth)acrylic acid, whereby turndown control is utilized to maintain optimal distillation column performance in the dehydration of aqueous (meth)acrylic acid to provide a (meth)acrylic acid solution.
摘要翻译： 本发明涉及一种制备（甲基）丙烯酸的方法，由此使用调低控制来维持在（甲基）丙烯酸水溶液脱水中最佳的蒸馏塔性能以提供（甲基）丙烯酸溶液。
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公开(公告)号：EP0770592A1
公开(公告)日：1997-05-02
申请号：EP95308363.1
申请日：1995-11-22
发明人： Bauer, William, Jr. , Hale, Timothy Allen , Mason, Robert Michael , Upmacis, Rita Karina , Petrovich, Lori Marie
CPC分类号： C07C51/44 , C07C51/487 , C07C51/50 , Y10S203/09 , Y10S203/22 , C07C57/04
摘要： A process for producing pure grade acrylic acid having residual aldehyde levels under 10 parts per million by means of distillation of crude acrylic acid in the presence of two selected groups of amines - chosen from the groups consisting of aromatic amino acids, alkanolamines, phenylene diamines and (di)nitrophenylhydrazines - at different points of the continuous process. The treatment provides a selective reduction, for example, of acrolein and furfural, and may be advantagenously conducted in the presence of maleic acid and maleic anhydride impurities.
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公开(公告)号：EP1035103B1
公开(公告)日：2003-10-15
申请号：EP00301333.1
申请日：2000-02-21
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公开(公告)号：EP0675100B1
公开(公告)日：2001-06-13
申请号：EP95301386.9
申请日：1995-03-03
IPC分类号： C07C51/43 , C07C57/07 , C07C51/377 , C07C51/44
CPC分类号： C07C51/43 , C07C51/377 , C07C51/44 , C07C57/04
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公开(公告)号：EP1035103A3
公开(公告)日：2001-01-17
申请号：EP00301333.1
申请日：2000-02-21
发明人： Chapman, Josefina Tseng , Day, James Clarence, English Village Apts, Bldg. 5 , Ebert, Donald Alan , Kaminski, Thomas Albert , Mason, Robert Michael , Tsay, Chorng-Shyuan
摘要： This invention relates to a process for preparing acrylic acid which utilizes an aqueous stream which includes recycled wastewater, at least part of which is stripped of undesirable components in a stripping column prior to being recycled to an acrylic acid absorber.
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7.发明公开High capacity purification of thermally unstable compounds 审中-公开HochleistungsfähigeReinigung thermisch instabiler Verbindungen
公开(公告)号：EP1426086A1
公开(公告)日：2004-06-09
申请号：EP03257278.6
申请日：2003-11-18
摘要： Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section (3) and a stripping section (4) with the stripping section (4) having a stripping tray (1020) with 5 to 50 % open area (1000), a pressure drop from 0.02 psi to 0.2 psi and a tray efficiency during operation of the column which is equal to or greater than 20%.
摘要翻译： 分离过程和装置能够以高容量净化热敏材料。 一种具有精馏段（3）和汽提部分（4）的装置，其中汽提部分（4）具有汽提塔板（1020），其具有5至50％开放面积（1000），压降为0.02psi至0.2psi 以及塔的操作期间的托盘效率等于或大于20％。
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公开(公告)号：EP1035103A2
公开(公告)日：2000-09-13
申请号：EP00301333.1
申请日：2000-02-21
发明人： Chapman, Josefina Tseng , Day, James Clarence, English Village Apts, Bldg. 5 , Ebert, Donald Alan , Kaminski, Thomas Albert , Mason, Robert Michael , Tsay, Chorng-Shyuan
摘要： This invention relates to a process for preparing acrylic acid which utilizes an aqueous stream which includes recycled wastewater, at least part of which is stripped of undesirable components in a stripping column prior to being recycled to an acrylic acid absorber.
摘要翻译： 本发明涉及一种制备丙烯酸的方法，该方法使用含有循环废水的含水物流，在再循环至丙烯酸吸收塔之前，其至少一部分在汽提塔中汽提出不需要的组分。
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9.发明公开Preparation of alpha-beta-unsaturated c3-c6 carboxylic acids 失效Herstellung von alpha-beta-ungesättigtenC3-C6-Carbonsäuren。
公开(公告)号：EP0675100A2
公开(公告)日：1995-10-04
申请号：EP95301386.9
申请日：1995-03-03
CPC分类号： C07C51/43 , C07C51/377 , C07C51/44 , C07C57/04
摘要： The present invention provides a process for the preparation of an α,β-unsaturated C 3 -C 6 carboxylic acid of greater than 98% purity, which combines fractional distillation and melt crystallization procedures. One embodiment of the process of the invention is depicted schematically in Figure 1 wherein 1 represents a dehydrogenation reactor in which a C 3 -C 6 carboxylic acid is dehydrogenated to produce on α,β-unsaturated C 3 -C 6 carboxylic acid, 3 represents a distillation unit and 6 represents a melt crystallizer.
摘要翻译： 本发明提供了一种制备大于98％纯度的α，β-不饱和C 3 -C 6羧酸的方法，其结合分馏和熔融结晶方法。 在图1中示意性地描述了本发明方法的一个实施方案，其中1表示脱氢反应器，其中C3-C6羧酸被脱氢生成α，β-不饱和C3-C6羧酸，3表示蒸馏装置， 6表示熔融结晶器。
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公开(公告)号：EP2067512A3
公开(公告)日：2009-06-17
申请号：EP09152870.3
申请日：2003-11-18
摘要： Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section and a stripping section with the stripping section having a stripping tray with 5 to 50 % open area, a pressure drop from 138 Pa (0,02 psi) to 1379 Pa (0,2 psi) and a tray efficiency during operation of the column which is equal to or greater than 20%.
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