公开(公告)号：JP2010059174A

公开(公告)日：2010-03-18

申请号：JP2009251882

申请日：2009-11-02

Applicant: Stockhausen Gmbh ,  ストックハウゼン ゲーエムベーハー

Inventor： BUB GUENTHER ,  MOSLER JUERGEN

IPC: B01D9/02 ,  C07C57/055 ,  B01D9/00 ,  C07B63/00 ,  C07C51/43 ,  C07C57/04 ,  C07C57/07

CPC classification number: C07C51/43 ,  B01D9/0013 ,  B01D9/004 ,  B01D9/0059 ,  C07C57/04 ,  C07C57/145

Abstract: PROBLEM TO BE SOLVED: To provide a method of and a device for efficiently purifying to reduce the remaining impurities in a product.
SOLUTION: There are provided the method of and the device for purifying the mixture of substances using optionally fractional crystallization. Impurities often precipitate in addition to a desired product during the crystallization process since these impurities are present at high concentrations surpassing the solubility limit. According to the inventive method, a solvent or a mixture of solvents with a strong affinity to an impurity with a tendency to precipitate is added to the mixture of substances or its melt to be purified so that the corresponding impurity is retained in solution. If there are several impurities with a tendency to precipitate, some of the impurities can be retained in solution by adding a suitable solvent, and the remainder can be separated by mechanical means, for example, filtration by suction, centrifugation and the like.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于有效净化以减少产品中剩余杂质的方法和装置。 解决方案：提供了使用任选的分级结晶来纯化物质混合物的方法和装置。 杂质通常在结晶过程中除了期望的产物之外沉淀，因为这些杂质以高于溶解度极限的高浓度存在。 根据本发明的方法，向待纯化的物质或其熔体的混合物中加入对具有析出倾向的杂质具有强亲和力的溶剂或溶剂混合物，使得相应的杂质保留在溶液中。 如果有几种杂质倾向于沉淀，则可以通过加入合适的溶剂将一些杂质保留在溶液中，其余的可通过机械方式分离，例如通过抽吸，离心等进行过滤。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2012136551A

公开(公告)日：2012-07-19

申请号：JP2012061725

申请日：2012-03-19

Applicant: Evonik Stockhausen Gmbh ,  エボニック ストックハウゼン ゲーエムベーハー

Inventor： STEFAN NORDHOFF ,  TORSTEN BALDUF ,  MOSLER JUERGEN ,  UHLICH WILFRIED ,  DENNIS THONG YU-CHANG ,  KOBUS AXEL ,  ARNDT SELBACH ,  KOHN JUERGEN

IPC: C07C57/04 ,  C07C51/43 ,  C08F20/06 ,  C08J9/00

CPC classification number: C07C51/43 ,  C07C57/04

Abstract: PROBLEM TO BE SOLVED: To easily separate impurities in a process for producing (meth)acrylic acid, without making difficult the crystallization of (meth)acrylic acid to be carried out successively.SOLUTION: The process includes first forming crude (meth)acrylic acid, and then continuously refining the crude (meth)acrylic acid, wherein the continuous refinement process includes: a step (a) of depositing impurities as crystals from a composition containing (meth)acrylic acid and the impurities; and a step (b) of separating the deposited crystal impurities from the composition. There are also provided (meth)acrylic acid obtained by the process, a production apparatus of (meth)acrylic acid, use of a refining apparatus of the apparatus or to produce (meth)acrylic acid, (meth)acrylic acid, a water-absorbing polymer, use of a water-absorbing polymer, a fiber, a sheet, a foam and a composite.

Abstract translation: 待解决的问题：为了容易地分离（甲基）丙烯酸的制造方法中的杂质，不难使连续进行的（甲基）丙烯酸的结晶化。 解决方案：该方法包括首先形成粗（甲基）丙烯酸，然后连续精炼粗（甲基）丙烯酸，其中连续精制方法包括：步骤（a）从含有 （甲基）丙烯酸和杂质; 和从组合物中分离沉积的晶体杂质的步骤（b）。 还提供了通过该方法获得的（甲基）丙烯酸，（甲基）丙烯酸的制备装置，使用该装置的精制装置或制备（甲基）丙烯酸，（甲基）丙烯酸， 吸水聚合物，吸水聚合物，纤维，片，泡沫和复合材料的使用。 版权所有（C）2012，JPO＆INPIT