发明名称 |
Process for preparing alkanolamines |
摘要 |
A process for preparing alkanolamines which comprises steps of reacting ammonia with an alkylene oxide in the presence of a carbonate of ammonia to obtain a crude alkanolamine solution, distilling off ammonia, carbon dioxide and water to regulate the content of carbon dioxide in the crude alkanolamine solution to 1% by weight or less, and distilling the crude alkanolamine solution to separate and collect the alkanolamines, whereby the production ratio of a monoalkanolamine can be increased and impurities can be decreased.
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申请公布号 |
US5633408(A) |
申请公布日期 |
1997.05.27 |
申请号 |
US19950493804 |
申请日期 |
1995.06.22 |
申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
WATANABE, HIROYOSHI;MATSUMURA, MUTSUO;OHKAWA, TAKASHI;SUZUKI, KENJI |
分类号 |
C07C213/04;(IPC1-7):C07C209/02 |
主分类号 |
C07C213/04 |
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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