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发明授权
US07294668B2 Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant 有权
具有少量氟化表面活性剂的聚四氟乙烯的水分散体

Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant
摘要：
An aqueous non-melt processible polytetrafluoroethylene dispersion having non-melt processible polytetrafluoroethylene particles in an amount of 30 to 70% by weight and an amount of non-ionic surfactant between 2 and 15% by weight based on the weight of polytetrafluoroethylene solids. The dispersion is free of fluorinated surfactant or contains fluorinated surfactant in amounts of not more than 200 ppm based on the amount of polytetrafluoroethylene solids. At least part of the non-melt processible polytetrafluoroethylene particles comprise an effective amount of ionic end groups in the polytetrafluoroethylene polymer chains.
摘要（中）：

一种水溶性可熔融加工的聚四氟乙烯分散体，其具有30至70重量％的非熔体加工的聚四氟乙烯颗粒和基于聚四氟乙烯固体重量的2至15重量％的非离子表面活性剂的量。 该分散体不含氟化表面活性剂，或含有基于聚四氟乙烯固体量不大于200ppm的含氟表面活性剂。 至少部分不可熔融加工的聚四氟乙烯颗粒在聚四氟乙烯聚合物链中包含有效量的离子端基。

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