NOVEL AQUEOUS DISPERSION OF POLYTETRAFLUOROETHYLENE
    1.
    发明申请
    NOVEL AQUEOUS DISPERSION OF POLYTETRAFLUOROETHYLENE 审中-公开
    聚四氟乙烯的新型水性分散体

    公开(公告)号:US20130231020A1

    公开(公告)日:2013-09-05

    申请号:US13883794

    申请日:2011-12-29

    摘要: Disclosed are aqueous dispersions of fluoropolymer comprising from 45 to 70 weight % of non-melt-processible polytetrafluoroethylene (PTFE) particles, and based on the weight of the PTFE particles, from 1 to 15 weight % of nonionic surfactants, and 1-10 weight % of a water soluble alkaline earth metal salt, or 0.1-10 weight % of a colloidal silica. Also disclosed are compositions comprising the aqueous PTFE dispersions of this invention and their uses for coating applications with improved critical cracking thickness.

    摘要翻译: 公开了含氟聚合物的水分散体,其包含45至70重量%的不可熔融加工的聚四氟乙烯(PTFE)颗粒,并且基于PTFE颗粒的重量,1至15重量%的非离子表面活性剂和1-10重量% %的水溶性碱土金属盐,或0.1-10重量%的胶体二氧化硅。 还公开了包含本发明的水性PTFE分散体的组合物及其用于涂覆具有改进的临界裂纹厚度的应用。