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    • 7. 发明授权
    • Blended fluoropolymer coatings for rigid substrates
    • 用于刚性基材的混合氟聚合物涂料
    • US08349434B2
    • 2013-01-08
    • US13410357
    • 2012-03-02
    • Leonard W. HarveyLawrence D. Leech
    • Leonard W. HarveyLawrence D. Leech
    • D06N7/04G11B5/64C08L27/14
    • C09D127/18C08L27/18C08L2205/02C08L2205/03Y10T428/24355C08L2666/04
    • A fluoropolymer coating composition that may be applied over a primer and/or at least one midcoat in a non-stick coating system. The coating composition may be prepared and applied in the form of a liquid dispersion, and includes at least one fluoropolymer base component, such as polytetrafluoroethylene (PTFE) and, in particular, at least one high molecular weight PTFE (HPTFE). The coating composition additionally includes a blended fluoropolymer composition. The blended fluoropolymer composition is a blend of at least one low molecular weight PTFE (LPTFE) and at least one melt-processible fluoropolymer. After application directly to a substrate or over an underlying coating, the coating demonstrates improved abrasion and scratch resistance, as well as improved release characteristics, as compared to known coatings that include only HPTFE or HPTFE with a small amount of melt processible fluoropolymer.
    • 可涂覆在底涂层和/或不粘涂层体系中的至少一个中涂层的含氟聚合物涂料组合物。 涂料组合物可以以液体分散体的形式制备和应用,并且包括至少一种氟聚合物基础组分,例如聚四氟乙烯(PTFE),特别是至少一种高分子量PTFE(HPTFE)。 涂料组合物另外包括混合的含氟聚合物组合物。 混合的含氟聚合物组合物是至少一种低分子量PTFE(LPTFE)和至少一种可熔融加工的含氟聚合物的共混物。 在直接施加到基底或在下面的涂层上之后,与仅包括具有少量可熔融加工的含氟聚合物的HPTFE或HPTFE的已知涂层相比,涂层显示出改进的耐磨性和耐划伤性以及改进的剥离特性。