发明名称 |
Process for producing (meth)acrylic acid |
摘要 |
The present invention provides a method for suppressing an undesirable polymerization reaction of (meth)acrylic acid in a purification step for producing (meth)acrylic acid and for avoiding troubles due to clogging of devices or the like, to thereby attain a stable continuous operation. The present invention provides a method for producing (meth)acrylic acid comprising: distilling a water-containing liquid of (meth) acrylic acid containing (meth)acrylic acid and water by using a distillation column in the presence of an azeotropic solvent boiling together with at least water to remove water from the water-containing liquid of (meth)acrylic acid through azeotropy with the azeotropic solvent, in which the water-containing liquid of (meth)acrylic acid is distilled in the presence of the azeotropic solvent after distillation by the azeotropic solvent is carried out in the distillation column. |
申请公布号 |
ZA200606191(B) |
申请公布日期 |
2008.05.28 |
申请号 |
ZA20060006191 |
申请日期 |
2004.10.08 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
YADA, SHUHEI;TAKASAKI, KENJI;SUZUKI, YOSHIRO;OGAWA, YASUSHI |
分类号 |
C07C51/46;C07C;C07C57/07 |
主分类号 |
C07C51/46 |
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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