发明名称 |
Purification of alkyl glyoxylate. |
摘要 |
<p>There is disclosed an improved process for the manufacture of glyoxylic acid obtained by oxidation of glycolic acid. For processing purposes alkyl esters of these acids are employed. Increased efficiency is obtained by recovering glycolate rich streams from one or more distillation operations and after treatment to remove acetic acid by-product the streams are recycled to the oxidation reaction.</p> |
申请公布号 |
EP0353215(A2) |
申请公布日期 |
1990.01.31 |
申请号 |
EP19890870115 |
申请日期 |
1989.07.24 |
申请人 |
MONSANTO COMPANY |
发明人 |
COVA, DARIO RICARDO;THORMAN, JOHN MICHAEL |
分类号 |
C07C67/54;B01D1/22;B01D3/14;B01D3/36;B01D5/00;C07C67/60;C07C69/67 |
主分类号 |
C07C67/54 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|