Vulcanizable fluororubber produced from tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer
    6.
    发明授权
    Vulcanizable fluororubber produced from tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer 有权
    由四氟乙烯/全氟烷基乙烯基醚共聚物制得的可硫化氟橡胶

    公开(公告)号:US06303699B1

    公开(公告)日:2001-10-16

    申请号:US09252439

    申请日:1999-02-18

    IPC分类号: C08F818

    摘要: Disclosed is a vulcanizable fluororubber composition comprising (a) a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer, (b) an organic peroxide, (c) a co-crosslinking agent and (d) hydrotalcite. The copolymer (a) preferably contains an iodine atom or a bromine atom. The vulcanizable fluororubber composition preferably further comprises carbon black or titanium oxide. When the vulcanizable fluororubber composition is vulcanized, the resulting vulcanizate has excellent compression set and is relatively non-toxic.

    摘要翻译: 公开了一种可硫化的氟橡胶组合物,其包含(a)四氟乙烯/全氟烷基乙烯基醚共聚物,(b)有机过氧化物,(c)共交联剂和(d)水滑石。 共聚物(a)优选含有碘原子或溴原子。 可硫化氟橡胶组合物优选还包含炭黑或氧化钛。 当可硫化氟橡胶组合物硫化时,得到的硫化橡胶具有优异的压缩永久变形,并且是相对无毒的。

    Reversible polymer gels based on fluoroelastomers
    7.
    发明授权
    Reversible polymer gels based on fluoroelastomers 失效
    基于含氟弹性体的可逆聚合物凝胶

    公开(公告)号:US5270115A

    公开(公告)日:1993-12-14

    申请号:US042479

    申请日:1993-04-02

    摘要: Reversible polymer gels comprising:(a) 55-98% by weight based on the total polymers contained in the gel, of an elastomeric copolymer of vinylidene fluoride comprising, in moles, 55-85% of vinylidene fluoride, 15-45% of hexafluoropropene and 0.30% of tetrafluoroethylene;(b) 2-45% based on the total polymers contained in the gel, of a non-elastomeric polymer selected from non-elastomeric VDF. based polymers, or polyvinylfluoride, or acrylic resins, for example polyalkylmethacrylates and copolymers of alkylmethacrylates with alkylacrylates, having T.sub.g >50.degree. C.Said polymer gels can be used as protective and consolidating agents for stone materials, for preparing insulating and impermeable films and for impregnating fiber textiles

    摘要翻译: 可逆聚合物凝胶包含:(a)基于凝胶中包含的总聚合物的55-98重量%的偏二氟乙烯的弹性共聚物,其摩尔数为55-85%的偏二氟乙烯,15-45%的六氟丙烯 和0.30%的四氟乙烯; (b)基于凝胶中包含的总聚合物,选自非弹性体VDF的非弹性体聚合物的2-45%。 基于聚合物或聚氟乙烯或丙烯酸树脂,例如聚甲基丙烯酸烷基酯和甲基丙烯酸烷基酯与丙烯酸烷基酯的共聚物,Tg> 50℃。所述聚合物凝胶可用作石材的保护和固结剂,用于制备绝缘和不渗透膜, 浸渍纤维纺织品