发明名称 |
Method for conversion of ethylidene N,N'-bis-pyrrolidone into 2-pyrrolidone |
摘要 |
A method for conversion of ethylidene N,N'-bis-pyrrolidone, a by-product of the vinylation of 2-pyrrolidone, into 2-pyrrolidone starting material. This method is carried out by heating the by-product at an elevated temperature for a predetermined period of time, and recovering the 2-pyrrolidone conversion product therefrom for recycle into the vinylation process.
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申请公布号 |
US4939273(A) |
申请公布日期 |
1990.07.03 |
申请号 |
US19890397931 |
申请日期 |
1989.08.24 |
申请人 |
GAF CHEMICALS CORPORATION |
发明人 |
LIU, KOU-CHANG;TAYLOR, PAUL D. |
分类号 |
C07D207/267;C07D207/26;C07D207/263 |
主分类号 |
C07D207/267 |
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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