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发明授权
US4036830A Process for the recovery of pure .epsilon.-caprolactam from an aqueous solution thereof 失效
从其水溶液中回收纯的{68-己内酰胺的方法

Process for the recovery of pure .epsilon.-caprolactam from an aqueous solution thereof
摘要：
A process for recovering substantially pure .epsilon.-caprolactam from a contaminated solution thereof is disclosed by concentrating, if needed, the caprolactam content of the solution to about 60-75 weight percent then extracting the concentrated solution with an organic solvent such as benzene or the like, then recovering the resulting caprolactam-laden organic solution.
摘要（中）：

通过将需要的己内酰胺含量浓缩至约60-75％（重量），然后用有机溶剂如苯等萃取浓缩溶液来公开从其污染溶液中回收基本上纯的ε-己内酰胺的方法 ，然后回收所得的己内酰胺负载有机溶液。

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