发明名称 |
Process for the purification of aldehyde impurities |
摘要 |
A novel process for the purification of poloxamers which contain aldehyde impurities, and particularly for the purification of the poloxamers named poloxamer 188 and poloxamer 407, which process includes dissolving the poloxamer(s) in a solvent which solvent may optionally contain an acid or a mixture of acids; if the solvent in which the poloxamer(s) has been dissolved is free from acid, acid is added; whereafter the aldehydes are removed.
|
申请公布号 |
US6448371(B1) |
申请公布日期 |
2002.09.10 |
申请号 |
US20000656036 |
申请日期 |
2000.09.08 |
申请人 |
MAILLEFER INSTRUMENTS TRADING S.A.R.L. |
发明人 |
BERG MATS;DJURLE ALF;MELIN MAGNUS;NYMAN PETER |
分类号 |
C08G65/30;(IPC1-7):C08F6/10 |
主分类号 |
C08G65/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|