High vinyl ether modified sinterable polytetrafluoroethylene
    1.
    发明授权
    High vinyl ether modified sinterable polytetrafluoroethylene 有权
    高乙烯基醚改性可烧结聚四氟乙烯

    公开(公告)号:US06870020B2

    公开(公告)日:2005-03-22

    申请号:US10420144

    申请日:2003-04-22

    IPC分类号: C08F214/26 C08F116/12

    CPC分类号: C08F214/262 Y10T428/2982

    摘要: Modified polytetrafluoroethylene powder of a sinterable copolymer of tetrafluoroethylene containing about 0.5 to about 10 weight % of fluorinated vinyl ether, the copolymer having a melt creep viscosity of greater than about 1×106 Pa·S. In preferred embodiments, the sinterable copolymer has a melt creep viscosity of greater than about 1×107 Pa·S and fluorinated vinyl ether content of from about 1 to about 7 weight %. The polymer has a combination of a high level of fluorinated vinyl ether and a melt creep viscosity which is high enough to enable the fabrication of articles by sintering.

    摘要翻译: 包含约0.5至约10重量%氟化乙烯基醚的四氟乙烯的可烧结共聚物的改性聚四氟乙烯粉末,该共聚物的熔体蠕变粘度大于约1×10 6 Paa.S。 在优选的实施方案中,可烧结共聚物的熔体蠕变粘度大于约1×10 7 Pa,氟化乙烯基醚含量为约1至约7重量%。 该聚合物具有高水平的氟化乙烯基醚和熔体蠕变粘度的组合,其足够高以能够通过烧结制造制品。

    Suspension polymerization of TFE
    2.
    发明授权
    Suspension polymerization of TFE 失效
    TFE的悬浮聚合

    公开(公告)号:US5405923A

    公开(公告)日:1995-04-11

    申请号:US236852

    申请日:1994-05-02

    申请人: Ralph M. Aten

    发明人: Ralph M. Aten

    IPC分类号: C08F2/18 C08F14/26

    CPC分类号: C08F14/26

    摘要: A process for suspension polymerization of tetrafluoroethylene to polytetrafluoroethylene is characterized by starting reaction at low temperature and increasing temperature to higher temperature during the reaction.

    摘要翻译: 四氟乙烯悬浮聚四氟乙烯的方法的特征在于,在反应过程中,在低温开始反应,升温至更高的温度。