Fluorine-containing elastomer composition
    1.
    发明授权
    Fluorine-containing elastomer composition 失效
    含氟弹性体组合物

    公开(公告)号:US5874506A

    公开(公告)日:1999-02-23

    申请号:US834521

    申请日:1997-04-04

    CPC分类号: C08K5/0025

    摘要: A fluorine-containing elastomer comprising vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene having a high fluorine content (e.g. at least 68% by weight) can be vulcanized with a polyol-based cross-linking agent by further copolymerizing 2H-pentafluoropropylene into the elastomer, whereby the resulting vulcanization products having improved characteristics such as rheological properties, normal state physical properties and compression set can be obtained. Vulcanization products obtained by vulcanization with a polyol-based cross-linking agent and a quaternary onium salt compound have a good permeation resistance to fuel oil as a result of a permeation test with a mixed solvent of gasoline/methanol in a volume ratio of 85/15.

    摘要翻译: 包含氟含量高(例如至少68重量%)的偏二氟乙烯,四氟乙烯和六氟丙烯的含氟弹性体可以通过将二氢五氟丙烯进一步共聚合到弹性体中而用多元醇系交联剂硫化, 可以获得具有改进特性的硫化产品,如流变特性,正常状态物理性能和压缩永久变形。 通过用多元醇系交联剂和季鎓盐化合物硫化获得的硫化产物通过汽油/甲醇的混合溶剂的体积比为85/10的渗透试验,对燃料油具有良好的耐渗透性, 15。

    Process for preparing vulcanization promoter for fluorine-containing
elastomers
    4.
    发明授权
    Process for preparing vulcanization promoter for fluorine-containing elastomers 失效
    制备含氟弹性体硫化促进剂的方法

    公开(公告)号:US5981423A

    公开(公告)日:1999-11-09

    申请号:US150782

    申请日:1998-09-10

    IPC分类号: C07F9/54 C08F8/00 B01J31/18

    CPC分类号: C07F9/54

    摘要: A vulcanization promoter for fluorine-containing elastomers prepared by (1) allowing 1.01 to 1.15 moles of a quaternary phosphonium salt to react with one mole of monoalkali metal salt of bisphenol AF in alcohol, (2) allowing 2.02 to 2.30 moles of a quaternary phosphonium salt to react with one mole of a dialkali metal salt of bisphenol AF in alcohol, (3) allowing one mole each of an alkali metal alkoxide and bisphenol AF to react with 1.01 to 1.15 moles of a quaternary phosphonium salt in alcohol or (4) subjecting one mole of bisphenol AF, 1.01 to 1.15 moles of a quaternary phosphonium salt and one mole of an alkali metal alkoxide to reaction in alcohol, each followed by further addition of the bisphenol AF thereto, or (5) allowing 1.01 to 1.15 moles of a quaternary phosphonium salt to react with one of 1/4alkali metal salt of bisphenol AF in alcohol gives much more improved vulcanization characteristics such as vulcanization speed, etc. while maintaining advantageous properties such as distinguished normal state physical properties as observed in case of vulcanization promoters of bisphenol AF-quaternary phosphonium salt series.

    摘要翻译: 一种含氟弹性体的硫化促进剂,其通过(1)使1.01至1.15摩尔季鏻盐与醇中的1摩尔双酚AF的单碱金属盐反应,(2)允许2.02至2.30摩尔季鏻 盐与醇1摩尔双酚AF的二碱金属盐反应,(3)使一摩尔碱金属醇盐和双酚AF与醇中的季碘盐1.01至1.15摩尔反应,或(4) 使1摩尔双酚AF,1.01至1.15摩尔季鏻盐和1摩尔碱金属醇盐在醇中反应,然后进一步加入双酚AF,或(5)使1.01至1.15摩尔的 与醇中的+ E,fra 1/4 + EE双酚AF碱金属盐中的一种反应的季鏻盐提供了更多改进的硫化特性如硫化速度等,同时保持有利的丙 例如在双酚AF-季鏻盐系列的硫化促进剂的情况下观察到的正常状态物理性质。

    Process for regenerating cross-linked, vulcanized flourine rubber
    5.
    发明授权
    Process for regenerating cross-linked, vulcanized flourine rubber 失效
    再生交联硫化橡胶的方法

    公开(公告)号:US5770633A

    公开(公告)日:1998-06-23

    申请号:US684272

    申请日:1996-07-17

    摘要: Filler-containing, cross-linked, vulcanized fluorine rubber waste is regenerated by treatment with at least one of CH.sub.3 SO.sub.3 H, ClSO.sub.3 H, CF.sub.3 SO.sub.3 H and fuming sulfuric acid, followed by dissoluting into a solvent and separating solvent-insoluble filler therefrom, whereby revulcanizable fluorine rubber is recovered from the fluorine rubber waste, almost irrespective of types of cross-linking systems used for formation of cross-linked, vulcanized fluorine rubber.

    摘要翻译: 通过用CH3SO3H,ClSO3H,CF3SO3H和发烟硫酸中的至少一种进行处理,再填充含有交联硫化的氟橡胶废料,然后溶解到溶剂中并分离出溶剂不溶性填料,由此可再乳化的氟橡胶为 从氟橡胶废料中回收,几乎与用于形成交联硫化氟橡胶的交联体系类型无关。

    Peroxide-vulcanizable, fluorine-containing elastomer composition
    8.
    发明授权
    Peroxide-vulcanizable, fluorine-containing elastomer composition 失效
    过氧化物可硫化的含氟弹性体组合物

    公开(公告)号:US5187222A

    公开(公告)日:1993-02-16

    申请号:US777192

    申请日:1991-10-16

    IPC分类号: C08K3/36 C08K5/14

    CPC分类号: C08K3/36 C08K5/14

    摘要: A white pigment-containing, peroxide-vulcanizable, fluorine-containing elastomer composition, which comprises a fluorine-containing elastomer containing at least one of iodine and bromine in the molecule, an organic peroxide, a polyfunctional compound and ultra fine white carbon particles having a pH of 9 to 12 as an aqueous 4.about.5% by weight solution gives a vulcanized product with an improved compression set.

    摘要翻译: 含有分子中含有碘和溴中的至少一种的含氟弹性体的含白色颜料的可过氧化物硫化的含氟弹性体组合物,有机过氧化物,多官能化合物和具有 pH为9-12,作为4分子水溶液5%(重量)溶液,得到具有改进压缩永久变形的硫化产品。

    Vulcanizable fluororubber produced from tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer
    9.
    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。

    Process for producing fluorine-containing elastic copolymer
    10.
    发明授权
    Process for producing fluorine-containing elastic copolymer 失效
    含氟弹性共聚物的制造方法

    公开(公告)号:US4920170A

    公开(公告)日:1990-04-24

    申请号:US212587

    申请日:1988-06-28

    CPC分类号: C08F214/262 C08F216/1408

    摘要: A fluorine-containing elastic copolymer with distinguished low temperature characteristics, comprising (a) about 30 to about 80% by mole of tetrafluoroethylene, (b) about 5 to about 60% by mole of perfluoro(lower alkyl vinyl ether) and (c) a perfluoroether compound represented by following general formula:CF.sub.2 .dbd.CFOCF.sub.2 CFXORfwherein X: F or --CF.sub.3 and Rf: --CnF.sub.2n+1, is obtained by copolymerizing the (a) component, the (b) component and the (c) component in the presence of a radical polymerization initiator.

    摘要翻译: 包含(a)约30至约80摩尔%的四氟乙烯,(b)约5至约60摩尔%的全氟(低级烷基乙烯基醚)和(c)含氟弹性共聚物, 通过使(a)成分,(b)成分和(c)成分共聚合得到下述通式CF 2 = CFOCF 2 CFXOR f表示的全氟醚化合物,其中X:F或-CF 3和Rf:-CnF 2 n + 存在自由基聚合引发剂。