Core-shell fluoropolymer dispersions
    2.
    发明授权
    Core-shell fluoropolymer dispersions 有权
    核壳含氟聚合物分散体

    公开(公告)号:US06841594B2

    公开(公告)日:2005-01-11

    申请号:US10098803

    申请日:2002-03-13

    摘要: A dispersion of non-melt-processible fluoropolymer particles having an SSG of less than about 2.225 in aqueous medium. The fluoropolymer particles comprise a core of high molecular weight polytetrafluoroethylene having an average melt creep viscosity greater than about 1.5×1010 Pa·s and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. The shell has an average melt creep viscosity greater than about 9×109 Pa·s and comprises about 5 to about 30% by weight of the particles. The fluoropolymer in the dispersion of the invention is fibrillating.

    摘要翻译: 在水性介质中具有SSG小于约2.225的不可熔融加工的含氟聚合物颗粒的分散体。 含氟聚合物颗粒包含具有大于约1.5×10 10 Pa的平均熔体蠕变粘度和低分子量聚四氟乙烯或改性聚四氟乙烯的壳的高分子量聚四氟乙烯芯。 壳体具有大于约9×10 9 Pa的平均熔体蠕变粘度,并且包含约5至约30重量%的颗粒。 本发明的分散体中的含氟聚合物是原纤化的。