发明申请
- 专利标题： METHOD FOR PREPARING (METH)ACRYLIC ANHYDRIDE
- 专利标题（中）： 制备（甲基）丙烯酰胺的方法
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申请号： US12863033申请日： 2009-01-27
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公开(公告)号： US20100317892A1公开(公告)日： 2010-12-16
- 发明人: Jean-Michel Paul , Serge Tretjak
- 申请人： Jean-Michel Paul , Serge Tretjak
- 申请人地址： FR Colombes
- 专利权人： Arkema France
- 当前专利权人： Arkema France
- 当前专利权人地址： FR Colombes
- 优先权： FR08.50802 20080208
- 国际申请： PCT/FR2009/050113 WO 20090127
- 主分类号： C07C51/56
- IPC分类号： C07C51/56
摘要：
The present invention relates to an improved method for preparing (meth)acrylic anhydride (A(M)A2O) by transanhydrification between (meth)acrylic acid and acetic anhydride in the presence of at least one polymerization inhibitor, in which reaction to the point of partial conversion of the reagents is carried out, followed by continuous distillation. With the method according to the invention, it is possible to produce I1A(M)A2O of very high purity under improved productivity conditions compared to existing methods while eliminating problems of reactor fouling.
公开/授权文献
- US08097757B2 Method for preparing (meth)acrylic anhydride 公开/授权日：2012-01-17
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