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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
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