Process for producing (meth)acrylic acid
    1.
    发明专利
    Process for producing (meth)acrylic acid 审中-公开
    生产(甲基)丙烯酸的方法

    公开(公告)号:JP2012136551A

    公开(公告)日:2012-07-19

    申请号:JP2012061725

    申请日:2012-03-19

    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

    Apparatus for producing (meth)acrylic acid using crystallization method using high-boiling point solvent treatment
    2.
    发明专利
    Apparatus for producing (meth)acrylic acid using crystallization method using high-boiling point solvent treatment 有权
    使用高沸点溶剂处理的结晶方法生产(甲基)丙烯酸的装置

    公开(公告)号:JP2013053152A

    公开(公告)日:2013-03-21

    申请号:JP2012248776

    申请日:2012-11-12

    CPC classification number: C08J3/00 C07C51/43 C07C57/04

    Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for producing high purity (meth)acrylic acid.SOLUTION: The apparatus for producing (meth)acrylic acid includes a synthesis section for synthesizing a crude (meth)acrylic acid phase, a section for the distillation treatment of the crude (meth)acrylic acid, a pressure container for decomposing at least part of the (meth)acrylic acid dimer and the (meth)acrylic acid oligomer or both from the dimer phase to obtain a low-boiling point solvent phase containing (meth)acrylic acid and the like, and a crystallization section for separating at least part of the (meth)acrylic acid from the low-boiling point solvent phase by crystallization.

    Abstract translation: 待解决的问题:提供一种生产高纯度(甲基)丙烯酸的设备。 解决方案:(甲基)丙烯酸的制造装置包括合成粗(甲基)丙烯酸相的合成部,粗(甲基)丙烯酸的蒸馏处理部, (甲基)丙烯酸二聚物和(甲基)丙烯酸低聚物的至少一部分或二聚体相的两者,得到含有(甲基)丙烯酸等的低沸点溶剂相,和 通过结晶从低沸点溶剂相的至少一部分(甲基)丙烯酸。 版权所有(C)2013,JPO&INPIT

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