发明名称 |
Method for preparing deodorized N-vinyl-2-pyrrolidone |
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.
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申请公布号 |
US7037412(B2) |
申请公布日期 |
2006.05.02 |
申请号 |
US20030368411 |
申请日期 |
2003.02.20 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
ABE KAZUAKI;YODOSHI TAKASHI;YANO HITOSHI |
分类号 |
B01D3/34;C07D207/26;C07D207/267 |
主分类号 |
B01D3/34 |
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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