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    • 16. 发明授权
    • Extrudable fluoropolymer blends
    • 可挤出含氟聚合物共混物
    • US06790912B2
    • 2004-09-14
    • US10015154
    • 2001-12-11
    • Thomas J. Blong
    • Thomas J. Blong
    • C08L2306
    • C08L27/18C08L27/12C08L2205/02Y10T428/1352Y10T428/139Y10T428/31891C08L2666/04
    • Provided is a melt processable fluorothermoplastic composition comprising a major amount of a first semi-crystalline fluorinated copolymer and a minor amount of a second fluoropolymer effective to reduce melt defects in the composition. Each fluoropolymer is selected from four classes. The first class, (a), includes a semi-crystalline perfluorinated copolymer. The second class, (b), includes a fluoropolymer derived from interpolymerized units of at least one essentially perfluorinated monomer and at least one non-fluorinated hydrogen-containing monomer. The third class, (c), includes a fluoropolymer derived from interpolymerized units of at least one partially-fluorinated monomer, and optionally at least one essentially perfluorinated monomer. The second fluoropolymer is selected from a category other than the category in which the first fluoropolymer is selected. The minor component also can include interpolymerized units of a PAVE, and/or a PAOVE. A method of improving surface properties in a fluoropolymer extrudate is also provided.
    • 提供了一种可熔融加工的氟热塑性组合物,其包含主要量的第一半结晶含氟共聚物和少量第二含氟聚合物,其有效地减少组合物中的熔体缺陷。 每种氟聚合物选自四类。 第一类(a)包括半结晶全氟化共聚物。 第二类(b)包括衍生自至少一种基本全氟化单体和至少一种非氟化含氢单体的共聚单元的含氟聚合物。 第三类(c)包括衍生自至少一种部分氟化单体的互聚单元的氟聚合物和任选的至少一种基本上全氟化的单体。 第二含氟聚合物选自除了选择第一含氟聚合物的类别之外的类别。 次要组分还可以包括PAVE和/或PAOVE的互聚单元。 还提供了改进含氟聚合物挤出物中表面性能的方法。