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1.发明授权公开(公告)号：US06417392B1
公开(公告)日：2002-07-09
申请号：US09164796
申请日：1998-10-01
IPC分类号： C07C6952
CPC分类号： B01D3/009 , C07C213/06 , Y02P20/127 , C07C219/20
摘要： In the operation of producing an alkylamino(meth)acrylate by the reaction of transesterification of an alkyl(meth)acrylate with an alkylamino alcohol, the alkyl alcohol by-produced during the transesterification is distilled in the form of an azeotropic mixture with the alkyl(meth)acrylate, the resultant distillate is purified with an ion-exchange resin and handled, on the other hand, the reaction solution is distilled to allow separation of the catalyst wherein is provided a method and apparatus for effecting, in the production of the alkylamino(meth)acrylate, the distillation under such a condition as represses the amount of in crease of the Michael adduct below 2%.
摘要翻译： 在通过（甲基）丙烯酸烷基酯与烷基氨基醇的酯交换反应制备烷基氨基（甲基）丙烯酸酯的操作中，在酯交换期间副产生的烷基醇与烷基（ 甲基）丙烯酸酯，所得馏出物用离子交换树脂纯化，另一方面，蒸馏反应溶液以允许分离催化剂，其中提供了在制备烷基氨基中实现的方法和装置 （甲基）丙烯酸酯，在抑制迈克尔加合物的折痕量低于2％的条件下进行蒸馏。
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公开(公告)号：US06960670B2
公开(公告)日：2005-11-01
申请号：US10174669
申请日：2002-06-19
IPC分类号： C07C51/46 , C07C51/56 , C07D307/60
CPC分类号： C07C51/46 , C07C51/56 , C07C57/145
摘要： This invention discloses a method for producing maleic anhydride comprising an azeotropic distillation step to dehydrate a crude maleic acid-containing aqueous solution, which method is characterized by as an azeotropic solvent (1) using an organic solvent exhibiting a maximum dissolving concentration of the organic solvent in water in the range of 0.1-5% by weight at a temperature of 20° C. According to this invention, it is made possible to prevent the occurrence of a blocking substance, allow a continuous operation for a long time, and remove by-produced acid components by a process of distillation for azeotropic dehydration.
摘要翻译： 本发明公开了一种马来酸酐的制造方法，其特征在于，使用含有所述有机溶剂的最大溶解浓度的有机溶剂作为共沸溶剂（1）进行脱水的共沸蒸馏工序， 在20℃的温度范围为0.1-5重量％的水中。根据本发明，可以防止发生阻塞物质，长时间连续操作，并且通过 通过蒸馏共沸脱水方法生产的酸组分。
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公开(公告)号：US06465681B2
公开(公告)日：2002-10-15
申请号：US10021061
申请日：2001-12-19
申请人： Masahiro Uemura , Tokumasa Ishida , Yukihiro Yoneda , Tetsuya Kajihara , Yasuhiro Shingai , Tadayoshi Kawashima
发明人： Masahiro Uemura , Tokumasa Ishida , Yukihiro Yoneda , Tetsuya Kajihara , Yasuhiro Shingai , Tadayoshi Kawashima
IPC分类号： C07C6726
摘要： The present invention provides: a production process for a hydroxyalkyl(meth)acrylate, which can raise productivity together with avoiding danger of explosion, and further can suppress side-formation of impurities such as a diester or a monoester wherein the impurities have a bad influence on product quality. When the time from the start of adding an alkylene oxide (AO) till the end of supplying the entirety of the AO is defined as T (hour), the amount of more than 50% of the entirety of the AO is supplied before T/2 (hour) has passed since the start of adding the AO. In addition, when the total amount of an AO as supplied and the time from the start of adding the AO till the end of supplying the entirety of the AO are defined as W (mol) and T (hour) respectively, the supply of the AO is started at a supplying speed V0 (mol/hour) that is faster than the average supplying speed V (=W/T) (mol/hour), and thereafter the supplying speed of the AO is decreased at least once, and then the supply of the entirety of the AO is completed for T (hour) from the start of adding the AO.
摘要翻译： 本发明提供：（甲基）丙烯酸羟烷基酯的制造方法，其能够提高生产率，同时避免爆炸的危险，并且还可以抑制杂质如杂质影响不良的杂质的副产物 对产品质量。 当从添加烯化氧（AO）开始直到提供AO全部结束时的时间定义为T（小时）时，超过全部AO的50％的量在T / 从加入AO开始，已经过了2（小时）。 此外，当供应的AO的总量和从AO的添加开始到提供AO的全部的时间分别被定义为W（mol）和T（小时）时， AO以比平均供给速度V（= W / T）（mol /小时）快）的供给速度V0（mol /小时）开始，此后AO的供给速度至少减少一次，然后 从添加AO开始，T（小时）完成AO的整体供应。
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