发明名称 |
Process for producing (Meth) acrylic acid |
摘要 |
<p>There is provided a process for producing (meth)acrylic acid including an absorption step of bringing a (meth)acrylic acid-containing gas obtained by a gas phase catalytic oxidation method into an absorption tower and allowing the gas to contact with an absorbent, in which absorption step a crude (meth)acrylic acid solution is withdrawn from a withdrawal outlet positioned between a supply point for the (meth) acrylic acid-containing gas and a supply point for the absorbent on the absorption tower, and then supplied to a next step. The process for producing (meth)acrylic acid makes it possible to suppress the formation of Michael adducts, thereby obtaining a (meth)acrylic acid containing solution in high yield and in high concentration.</p> |
申请公布号 |
EP1818324(A1) |
申请公布日期 |
2007.08.15 |
申请号 |
EP20060026623 |
申请日期 |
2006.12.21 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
SAKAI, TOYOFUMI;SERATA, NAOKI |
分类号 |
C07C51/25;C07C51/43;C07C51/44;C07C57/04 |
主分类号 |
C07C51/25 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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