发明名称 |
IMPROVED METHOD FOR PREPARING (METH)ACRYLIC ANHYDRIDE |
摘要 |
<p>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.</p> |
申请公布号 |
WO2009098422(A1) |
申请公布日期 |
2009.08.13 |
申请号 |
WO2009FR50113 |
申请日期 |
2009.01.27 |
申请人 |
ARKEMA FRANCE;PAUL, JEAN-MICHEL;TRETJAK, SERGE |
发明人 |
PAUL, JEAN-MICHEL;TRETJAK, SERGE |
分类号 |
C07C51/56;C07C51/573;C07C57/04 |
主分类号 |
C07C51/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|