发明授权
- 专利标题: Method of deashing from polymer solutions
- 专利标题(中): 聚合物溶液脱水的方法
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申请号: US12225814申请日: 2007-04-06
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公开(公告)号: US08669344B2公开(公告)日: 2014-03-11
- 发明人: Hye-Young Jung , Sung-Ho Chun , Sung-Don Hong , Jung-Min Lee , Heon Kim , Dmitry Kravchuk
- 申请人: Hye-Young Jung , Sung-Ho Chun , Sung-Don Hong , Jung-Min Lee , Heon Kim , Dmitry Kravchuk
- 申请人地址: KR Seoul
- 专利权人: LG Chem, Ltd.
- 当前专利权人: LG Chem, Ltd.
- 当前专利权人地址: KR Seoul
- 代理机构: McKenna Long & Aldridge, LLP
- 优先权: KR10-2006-0031947 20060407
- 国际申请: PCT/KR2007/001693 WO 20070406
- 国际公布: WO2007/117098 WO 20071018
- 主分类号: C08F6/22
- IPC分类号: C08F6/22
摘要:
A method of removing a residual catalyst metal compound from a polymer solution comprises the steps of: a) mixing a solution in which at least one organic nitrogen compound is dissolved in a polar solvent and the polymer solution to precipitate a chelate compound of the organic nitrogen compounds and the residual catalyst metal compound, b) adding the polar solvent to the solution mixture to dissolve a chelate compound and to precipitate a polymer, and c) filtering the precipitated polymer. After the polymer polymerization is completed, an organic nitrogen compound solution is added to perform a chelate reaction with the residual catalyst metal compound in a solution phase, and the polar solvent is added to precipitate the polymer so that only polymer precipitates are filtered while an additional filtration process in respect to the chelate compound is not performed to easily remove the residual catalyst metal compound.
公开/授权文献
- US20090281264A1 Method of Deashing From Polymer Solutions 公开/授权日:2009-11-12