| 发明名称 |
Method of preparing polyethylene polyamines having improved color. |
| 摘要 |
<p>Polyethylene polyamines having improved color are produced by treating discolored polyethylene polyamines using polyethylene polyamine hydrochloride with water at elevated temperatures by flash evaporating the decolorized polyethylene polyamines from the treating mixture.</p> |
| 申请公布号 |
EP0058962(A1) |
申请公布日期 |
1982.09.01 |
| 申请号 |
EP19820101289 |
申请日期 |
1982.02.19 |
| 申请人 |
UNION CARBIDE CORPORATION |
发明人 |
GIBSON, CHARLES ARNOLD;CRANDALL, JOHN WORTH |
| 分类号 |
C07C211/10;C07C67/00;C07C209/00;C07C209/84;C07C211/14;(IPC1-7):07C85/26;07C87/16;07C87/20 |
主分类号 |
C07C211/10 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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