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发明授权
CN104284909B 使用熔融挤出和暴露于氧源处理以减少变色的含氟聚合物树脂 有权 转让

使用熔融挤出和暴露于氧源处理以减少变色的含氟聚合物树脂
摘要：
本发明提供了减少可熔融加工的含氟聚合物树脂的热致变色的方法，所述可熔融加工的含氟聚合物树脂由使含氟单体在水性介质中聚合形成水性含氟聚合物分散体并且将所述含氟聚合物与所述水性介质分离获得所述含氟聚合物树脂而制得。所述方法包括：熔融挤出所述含氟聚合物树脂以制备熔融的含氟聚合物树脂；以及在所述熔融挤出期间，使所述熔融的含氟聚合物树脂暴露于氧源。
摘要（英）：

Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises melt extruding said fluoropolymer resin to produce molten fluoropolymer resin; and exposing said molten fluoropolymer resin to an oxygen source during said melt extruding.

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