发明授权
- 专利标题： Method for preparing deodorized N-vinyl-2-pyrrolidone
- 专利标题（中）： 除臭N-乙烯基-2-吡咯烷酮的制备方法
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申请号： US10368411申请日： 2003-02-20
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公开(公告)号： US07037412B2公开(公告)日： 2006-05-02
- 发明人: Kazuaki Abe , Takashi Yodoshi , Hitoshi Yano
- 申请人： Kazuaki Abe , Takashi Yodoshi , Hitoshi Yano
- 申请人地址： JP Osaka
- 专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Sherman & Associates
- 优先权： JP2002-043111 20020220; JP2002-043174 20020220
- 主分类号： B01D3/34
- IPC分类号： B01D3/34 ; C07D207/267
摘要：
The invention provides a method for producing purified N-vinyl-2-pyrrolidone free of odorous components. The method is composed of distilling with a distillation column a liquid, which is formed by adding to an odorous components-containing liquid having a N-vinyl-2-pyrrolidone purity of not lower than 90 wt %, a compound having boiling point lower than that of N-vinyl-2-pyrrolidone, and whereby removing the odorous components together with said low-temperature boiling compound as the distillate.
公开/授权文献
- US20030176712A1 Method for preparing deodorized N-vinyl-2-pyrrolidone 公开/授权日：2003-09-18
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