发明授权
- 专利标题: Process for recovering ethyleneamines from aqueous solution of ethyleneamine carbonates
- 专利标题(中): 从乙烯胺碳酸盐水溶液中回收乙撑胺的方法
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申请号: US584740申请日: 1984-02-29
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公开(公告)号: US4650906A公开(公告)日: 1987-03-17
- 发明人: Tsugio Murakami , Taizo Kawamoto
- 申请人: Tsugio Murakami , Taizo Kawamoto
- 申请人地址: JPX Shinnanyo
- 专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人地址: JPX Shinnanyo
- 优先权: JPX58-34650 19830304
- 主分类号: C07C209/84
- IPC分类号: C07C209/84 ; C07C67/00 ; C07C209/00 ; C07C209/62 ; C07C209/86 ; C07C211/10 ; C07C85/26
摘要:
Ethyleneamines are recovered from an aqueous solution of carbonates of ethyleneamines by distilling an aqueous solution of carbonates of ethyleneamines including ethylenediamine, in which the molar ratio of the carbon dioxide component to the ethyleneamines including ethylenediamine is 0.01 to 0.5, whereby ethylenediamine is distilled out together with water. The aqueous solution to be distilled is advantageously prepared by heating an aqueous solution of carbonates of ethyleneamines including ethylenediamine to effect decarboxylation.
公开/授权文献
- US5651942A Aromatic fragrance generator 公开/授权日:1997-07-29
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