| 发明名称 |
METHOD OF DEHYDRATING 3-HYDROXYPROPIONIC ACID TO FORM ACRYLIC ACID |
| 摘要 |
The invention relates to a process for dehydrating aqueous 3-hydroxypropionic acid to acrylic acid in the liquid phase, wherein aqueous acrylic acid is removed continuously from the liquid phase and the aqueous 3-hydroxypropionic acid and/or the liquid phase have a high content of oligomeric 3-hydroxypropionic acid. |
| 申请公布号 |
US2016221916(A1) |
申请公布日期 |
2016.08.04 |
| 申请号 |
US201415021286 |
申请日期 |
2014.08.21 |
| 申请人 |
BASF SE |
发明人 |
Blaschke Tim;Lang Ortmund;Wörz Nicolai Tonio;Raith Christian;Hartmann Marco;Zajaczkowski-Fischer Marta |
| 分类号 |
C07C51/377;C07C57/04;C07C51/44 |
主分类号 |
C07C51/377 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for continuously dehydrating aqueous 3-hydroxypropionic acid to aqueous acrylic acid in the liquid phase, the liquid phase having a temperature of 120 to 250° C., comprising continuously adding aqueous 3-hydroxypropionic acid to the liquid phase, and continuously withdrawing the aqueous acrylic acid from the liquid phase, wherein a ratio of oligomeric 3-hydroxypropionic acid to monomeric 3-hydroxypropionic acid in the aqueous 3-hydroxypropionic acid is at least 1:20 and/or a ratio of oligomeric 3-hydroxypropionic acid to monomeric 3-hydroxypropionic acid in the liquid phase is at least 1:1. |
| 地址 |
Ludwigshafen DE |
