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1. 发明申请

WO02077046A3 IMPROVED AQUEOUS EMULSION POLYMERIZATION PROCESS FOR PRODUCING FLUOROPOLYMERS 审中-公开
标题翻译：改进的水乳液聚合法生产含氟聚合物
公开(公告)号：WO02077046A3
公开(公告)日：2002-11-28
申请号：PCT/US0205800
申请日：2002-02-25
申请人： 3M INNOVATIVE PROPERTIES CO , KAULBACH RALPH , MAYER LUDWIG
发明人： KAULBACH RALPH , MAYER LUDWIG
IPC分类号： C08F2/26 , C08F14/00 , C08F14/18 , C08F114/18 , C08F214/18 , C07C51/44
CPC分类号： C08F114/18 , C08F14/18 , C08F2/16
摘要： The present invention provides a method of making a fluoropolymer through emulsion polymerization of one or more fluorinated monomers in an aqueous phase in the presence of a fluorinated surfactant. At least part of the fluorinated surfactant is added to the aqueous phase as an aqueous mixture with at least one organic liquid that is not miscible with water and that is selected from halogenated and non-halogenated organic liquids, the mixture having droplets having an average droplet diameter of not more than 1000nm and the mixture being added to the aqueous phase in such an amount that the total amount of the fluorinated surfactant is not more than 1% by weight based on the weight of the aqueous phase and the total amount of said organic liquid is not more than 1 % by weight based on the weight of said aqueous phase. The invention allows for an improvement of the efficiency of an aqueous emulsion polymerization process. In particular, the polymerization time can be reduced and the polymer yield may be improved.
摘要翻译：本发明提供了通过在氟化表面活性剂存在下在水相中乳液聚合一种或多种氟化单体来制备含氟聚合物的方法。将至少一部分氟化表面活性剂作为含水混合物与至少一种不与水混溶且选自卤化和非卤化有机液体的有机液体加入到水相中，所述混合物具有平均液滴的液滴直径不大于1000nm，并且将所述混合物加入水相中的量使得所述氟化表面活性剂的总量基于所述水相的重量不大于1重量％，并且所述有机物的总量基于所述水相的重量，液体不超过1重量％。本发明允许提高水乳液聚合过程的效率。具体而言，可以缩短聚合时间并且可以提高聚合物收率。

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