发明名称 |
High efficiency method of preparing polyalkylene oxide carboxylic acids |
摘要 |
A new method of preparing a tertiary alkyl ester of a polyalkylene oxide is provided. The new method employs milder conditions that avoid the back reaction to the starting polyalkylene oxide. The tertiary alkyl ester of a polyalkylene oxide is then reacted with a suitable acid to produce a polyalkylene oxide acid.
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申请公布号 |
US7989554(B2) |
申请公布日期 |
2011.08.02 |
申请号 |
US20060328662 |
申请日期 |
2006.01.10 |
申请人 |
ENZON PHARMACEUTICALS, INC. |
发明人 |
ZHAO HONG;MARTINEZ ANTHONY J. |
分类号 |
A61K47/12;C08G65/332;C08L71/02 |
主分类号 |
A61K47/12 |
代理机构 |
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主权项 |
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地址 |
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