MODIFIED POLYTETRAFLUOROETHYLENE FINE POWDER AND UNIAXIALLY ORIENTED POROUS BODY
    4.
    发明公开
    MODIFIED POLYTETRAFLUOROETHYLENE FINE POWDER AND UNIAXIALLY ORIENTED POROUS BODY 审中-公开
    MODIFIZIERTES FEINES聚四氟乙烯UND UNIXIAL ORIENTERERTERPORÖSERKÖRPER

    公开(公告)号:EP3053937A4

    公开(公告)日:2017-05-17

    申请号:EP14865651

    申请日:2014-12-01

    申请人: DAIKIN IND LTD

    摘要: The present invention aims to provide a modified polytetrafluoroethylene fine powder capable of providing a stretched body having high strength, a small pore size, and excellent homogeneity. The modified polytetrafluoroethylene fine powder of the present invention has non-melt-processability, has a standard specific gravity of 2.155 or lower, includes 0.015 mol% or more of a polymer unit derived from perfluoro(methyl vinyl ether) in all the monomer units, is obtained by emulsion polymerizing tetrafluoroethylene and at least the perfluoro(methyl vinyl ether) in the presence of a fluorosurfactant having a LogPOW value of 3.4 or lower, and has an extrusion pressure of 20.0 MPa or lower.

    摘要翻译: 本发明的目的在于提供一种改性聚四氟乙烯细粉,其能够提供具有高强度,小孔径和优异均匀性的拉伸体。 本发明的改性聚四氟乙烯细粉具有非熔融加工性,标准比重为2.155以下,在全部单体单元中含有来自全氟(甲基乙烯基醚)的聚合单元0.015摩尔%以上, 是通过在LogPOW值为3.4以下的含氟表面活性剂的存在下使四氟乙烯和至少全氟(甲基乙烯基醚)乳液聚合而获得的,并且具有20.0MPa以下的挤出压力。