发明申请
- 专利标题: METHOD OF MAKING FLUOROPOLYMER DISPERSION
- 专利标题(中): 制备氟聚合物分散体的方法
-
申请号: US13494260申请日: 2012-06-12
-
公开(公告)号: US20120252949A1公开(公告)日: 2012-10-04
- 发明人: Klaus Hintzer , Michael JÜRGENS , Harald Kaspar , Herbert Koenigsmann , Kai Helmut Lochhaas , Andreas R. Maurer , Werner Schwertfeger , Tilman Zipplies , Ludwig Mayer , Michael C. Dadalas , George G.I. Moore , Jay F. Schulz , Richard M. Flynn
- 申请人: Klaus Hintzer , Michael JÜRGENS , Harald Kaspar , Herbert Koenigsmann , Kai Helmut Lochhaas , Andreas R. Maurer , Werner Schwertfeger , Tilman Zipplies , Ludwig Mayer , Michael C. Dadalas , George G.I. Moore , Jay F. Schulz , Richard M. Flynn
- 专利权人: 3M Innovative Properties Company
- 当前专利权人: 3M Innovative Properties Company
- 优先权: GB0514387.0 20050715; GB0514398.7 20050715; GB0523853.0 20051124; GB0525978.3 20051221
- 主分类号: C08L27/18
- IPC分类号: C08L27/18 ; C08K5/095
摘要:
A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO−]iXi+ (I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
公开/授权文献
- US08614265B2 Method of making fluoropolymer dispersion 公开/授权日:2013-12-24
信息查询