发明授权
- 专利标题： Method of preparing water free isothiazolone
- 专利标题（中）： 无水异噻唑酮的制备方法
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申请号： US98108申请日： 1998-06-16
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公开(公告)号： US6072056A公开(公告)日： 2000-06-06
- 发明人: Seung-Hwan Kim , Jeong-Ho Park , Jin-Man Kim , Ki-Seung Choi , Myung-Ho Cho , Soon-Jong Hahn
- 申请人： Seung-Hwan Kim , Jeong-Ho Park , Jin-Man Kim , Ki-Seung Choi , Myung-Ho Cho , Soon-Jong Hahn
- 申请人地址： KRX
- 专利权人： SK Chemical
- 当前专利权人： SK Chemical
- 当前专利权人地址： KRX
- 优先权： KRX97-25185 19970617; KRX97-31944 19970710
- 主分类号： C07D275/02
- IPC分类号： C07D275/02 ; A01N43/80 ; C07D275/03
摘要：
A method of preparing water free isothiazolone having the steps of obtaining an extract from an aqueous solution containing isothiazolone by using a halogenationed hydrocarbon or nitrated hydrocarbon, removing the halogenationed hydrocarbon or nitrated hydrocarbon from the extract, and adding a organic solvent such as glycol, alcohol and glycol ether provides a water free isothiazolone having a high stability without forming wastes and harmful gas.
公开/授权文献
- US5435216A Method and apparatus for operating a hydraulic ram 公开/授权日：1995-07-25