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发明授权
US07279522B2 Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant 有权
不含或少量低分子量氟化表面活性剂的含氟聚合物分散体

Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant
摘要：
The present invention provides a fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of 10 to 400 nm dispersed in water whereby the dispersion is free of fluorinated surfactant having a molecular weight of less than 1000 g/mol or contains the fluorinated surfactant having a molecular weight of less than 1000 g/mol in an amount of not more than 0.025% by weight based on the total weight of solids in the dispersion. The dispersion further comprises a non-ionic surfactant and an anionic surfactant selected from fluorinated anionic surfactants having a molecular weight of at least 1000 g/mol, non-fluorinated anionic surfactants and mixtures thereof.
摘要（中）：

本发明提供一种氟聚合物分散体，其含有平均粒径为10〜400nm的含氟聚合物颗粒，其分散在水中，由此该分散体不含分子量小于1000g / mol的氟化表面活性剂，或含有具有分子量 重量小于1000g / mol，其量不得大于0.025％（重量），基于分散体中固体的总重量。 分散体还包含非离子表面活性剂和选自分子量至少为1000g / mol的氟化阴离子表面活性剂，非氟化阴离子表面活性剂及其混合物的阴离子表面活性剂。

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