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公开(公告)号:US06380427B1
公开(公告)日:2002-04-30
申请号:US09463664
申请日:2000-01-28
IPC分类号: C07C5142
摘要: A process for purification of (meth)acrylic acid which comprises adding to a crude (meth)acrylic acid one or two or more polar organic substances as a second component at a concentration of 1-35% by weight, crystallizing (meth)acrylic acid from the resulting (meth)acrylic acid solution, and separating the precipitated crystal of (meth)acrylic acid and a mother liquor from each other.
摘要翻译: 一种纯化(甲基)丙烯酸的方法,其包括以1-35重量%的浓度向粗制的(甲基)丙烯酸中加入一种或两种以上作为第二成分的极性有机物质,结晶(甲基)丙烯酸 从(甲基)丙烯酸溶液中分离析出的(甲基)丙烯酸和母液的析出晶体。