发明授权
- 专利标题： Process for producing .epsilon.-caprolactone
- 专利标题（中）： 生产ε-己内酯的方法
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申请号： US900875申请日： 1997-07-25
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公开(公告)号： US6063938A公开(公告)日： 2000-05-16
- 发明人: Kazuo Tanaka , Kengi Nakaya , Atsushi Ohkoshi , Hideaki Fujita
- 申请人： Kazuo Tanaka , Kengi Nakaya , Atsushi Ohkoshi , Hideaki Fujita
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-199143 19960729
- 主分类号： C07D315/00
- IPC分类号： C07D315/00 ; C07D309/00
摘要：
Disclosed is a process for producing .epsilon.-caprolactone which comprises distilling a reaction mixture obtained by oxidation of cyclohexanone to separate impurities, wherein .epsilon.-caprolactone separated in a rectifying column is contacted with an oxygen-containing gas and then distilled. Thereby, a high quality of .epsilon.-caprolactone of in which no coloration occurs during long time preservation can be produced by industrial advantages.
公开/授权文献
- US5264998A Electric lamp having a cap of synthetic resin 公开/授权日：1993-11-23
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