发明名称 |
Purification of impure hexamethylenediamines |
摘要 |
Impure hexamethylenediamines and more particularly those hexamethylenediamines containing contaminating amounts of tetrahydroazepine (THA), or more generally contaminating amounts of imines, are purified by distillation carried out with a short retention time of the impure hexamethylenediamine in the distillation column; the hexamethylenediamine obtained has a very low concentration of THA. |
申请公布号 |
US8436212(B2) |
申请公布日期 |
2013.05.07 |
申请号 |
US20080682301 |
申请日期 |
2008.10.03 |
申请人 |
BROGLIO MARIA IGNEZ;AMOROS DANIEL;VANNIER JEAN;LETOURNEUR DIDER;RHODIA OPERATIONS |
发明人 |
BROGLIO MARIA IGNEZ;AMOROS DANIEL;VANNIER JEAN;LETOURNEUR DIDER |
分类号 |
C07C209/84 |
主分类号 |
C07C209/84 |
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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