Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takeshi Nishimura0
Yukihiro Matsumoto0
Harunori Hirao0
Kenji Sanada0
Date of Patent
February 19, 2008
0Patent Application Number
106077670
Date Filed
June 27, 2003
0Patent Primary Examiner
Patent abstract
A method for the production of acrylic acid comprises (i) a step for introducing a polymerization inhibitor to a stage other than a stage for supplying a raw material and a stage for supplying a reflux of said distilling column or (ii) a step for supplying the acrylic acid recovered by thermally decomposing said oligomer to said stage for dehydration. Thus, the present invention enjoys effective utilization of acrylic acid and exalts the efficiency of production.
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