Method for the Purification of (Meth) Acrylic Acid
    1.
    发明申请
    Method for the Purification of (Meth) Acrylic Acid 有权
    纯化(甲基)丙烯酸的方法

    公开(公告)号:US20080091048A1

    公开(公告)日:2008-04-17

    申请号:US11571877

    申请日:2005-07-15

    IPC分类号: C07C51/43 C07C57/04 B01J19/00

    CPC分类号: C07C51/43 C07C57/04

    摘要: The present invention relates to a process for production of (meth)acrylic acid, whereby first a crude (meth)acrylic acid is produced and this crude (meth)acrylic acid is then continuously purified, whereby the continuous purification of the crude (meth)acrylic acid comprises the following process steps: a) in a composition comprising (meth)acrylic acid and impurities, precipitating the impurities in crystalline form from the composition; and b) separating the crystalline impurities precipitated from the composition. The invention also relates to the (meth)acrylic acid obtainable by this process, a device for production of (meth)acrylic acid, the use of the device or of a purification device for production of (meth)acrylic acid, (meth)acrylic acid, water-absorbing polymers, the use of water-absorbing polymers as well as fibers, sheets, foams and composites.

    摘要翻译: 本发明涉及一种生产(甲基)丙烯酸的方法,其中首先生产粗(甲基)丙烯酸,然后将该粗(甲基)丙烯酸连续纯化,由此连续纯化粗(甲基)丙烯酸, 丙烯酸包括以下工艺步骤:a)在包含(甲基)丙烯酸和杂质的组合物中,从组合物中沉淀出结晶形式的杂质; 和b)分离从组合物中析出的结晶杂质。 本发明还涉及通过该方法获得的(甲基)丙烯酸,(甲基)丙烯酸的制造装置,使用该装置或纯化装置用于制造(甲基)丙烯酸,(甲基)丙烯酸 吸水聚合物,吸水聚合物以及纤维,片材,泡沫和复合材料的使用。