-
公开(公告)号:US07619039B2
公开(公告)日:2009-11-17
申请号:US11407166
申请日:2006-04-19
申请人: Clay Woodward Jones , Robert John Cavanaugh , Walter Thomas Krakowiak , Richard A. Morgan , Theodore A. Treat
发明人: Clay Woodward Jones , Robert John Cavanaugh , Walter Thomas Krakowiak , Richard A. Morgan , Theodore A. Treat
IPC分类号: C08F259/00 , C08F259/10 , C08L43/00
CPC分类号: C09D127/18 , C08F259/08 , C09D151/003 , C08F214/26 , C08L2666/02
摘要: An aqueous dispersion of non-melt-processible fluoropolymer, process for making same and concentrated dispersion and powder obtained from the dispersion. The fluoropolymer particles of the dispersion have a standard specific gravity (SSG) of less than 2.225 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. At least about 1.5 weight % of the fluoropolymer particles comprise substantially rod-shaped particles having a length to diameter ratio greater than about 5.
摘要翻译: 不可熔融加工的含氟聚合物的水分散体,其制备方法和浓缩分散体和从分散体获得的粉末。 分散体的含氟聚合物颗粒具有小于2.225的标准比重(SSG),并且包含高分子量聚四氟乙烯核和低分子量聚四氟乙烯或改性聚四氟乙烯的壳。 至少约1.5重量%的含氟聚合物颗粒包含长径比大于约5的基本棒状颗粒。
-
公开(公告)号:US06841594B2
公开(公告)日:2005-01-11
申请号:US10098803
申请日:2002-03-13
IPC分类号: C08J3/16 , C08F259/08 , C08L51/00 , C09D5/02 , C09D127/18 , C09D127/22 , C09D151/00 , C08L83/00 , C08L27/12
CPC分类号: C08L51/003 , C08F259/08 , C09D151/003 , Y10T428/2982 , Y10T428/3154 , C08L2666/02
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。
-