Electrolyte polymers for lithium rechargeable batteries
    2.
    发明授权
    Electrolyte polymers for lithium rechargeable batteries 有权
    锂可充电电池用电解质聚合物

    公开(公告)号:US06630271B1

    公开(公告)日:2003-10-07

    申请号:US09496186

    申请日:2000-02-02

    IPC分类号: H01M618

    摘要: Use of vinylidenfluoride (VDF) copolymers for preparing electrolyte polymers, wherein the VDF copolymers have the following polymeric structure (I): (CH2—CF2)m—(CXY—C(ORf)Z)n—(CF2—CF(CF3))p) wherein: Rf is a perfluoroalkyl group having from 1 to 3 carbon atoms; X, Y, and Z equal to or different from each other are selected from F, Cl or H; m,n and p are integers, n or p can be 0 but not simultaneously; said VDF copolymers being obtainable by emulsion polymerization at 75-120° C., preferably 95°-120° C., in the presence of organic initiators.

    摘要翻译: 使用偏氟乙烯(VDF)共聚物制备电解质聚合物,其中VDF共聚物具有以下聚合物结构(I):其中:Rf是具有1至3个碳原子的全氟烷基; X,Y和Z等于或不同 彼此之间选自F,Cl或H; m,n和p是整数,n或p可以是0而不是同时;所述VDF共聚物可以通过在有机引发剂的存在下在75-120℃,优选95℃-120℃的乳液聚合获得。

    Amorphous perfluoropolymers
    3.
    发明授权
    Amorphous perfluoropolymers 失效
    无定形全氟聚合物

    公开(公告)号:US5883177A

    公开(公告)日:1999-03-16

    申请号:US845145

    申请日:1997-04-21

    CPC分类号: C09D145/00 C09D127/18

    摘要: Use of amorphous perfluoropolymers based on homopolymers of the TTD dioxole or its amorphous copolymers to prepare solutions in fluoro-containing solvents, to obtain solutions for coatings, wherein TTD has the formula: ##STR1## wherein R.sub.F is a perfluoroalkylic radical with 1-5 carbon atoms, linear or branched when possible; X.sub.1 and X.sub.2 equal to or different from each other being F or CF.sub.3 ; the TTD amount ranges from 40 to 100% by moles.

    摘要翻译: 使用基于TTD二氧杂环戊烯或其无定形共聚物的均聚物的无定形全氟聚合物在含氟溶剂中制备溶液,以获得涂料溶液,其中TTD具有下式:其中RF是具有1-5个碳的全氟烷基 原子,可以是直链或支链的; X 1和X 2彼此相同或不同,是F或CF 3; TTD量为40-100摩尔%。

    Fluoroelastomers endowed with improved processability and process for
preparing them
    5.
    发明授权
    Fluoroelastomers endowed with improved processability and process for preparing them 失效
    氟弹性体具有改进的加工性和制备它们的方法

    公开(公告)号:US5219964A

    公开(公告)日:1993-06-15

    申请号:US925845

    申请日:1992-08-07

    CPC分类号: C08F214/22 C08F214/26

    摘要: Fluoroelastomers characterized by the presence of iodine or bromine atoms at the end of the polymeric chain in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, and by a bromine content in the chain ranging from 0.05 to 2% by weight referred to the total weight of the monomeric units.Said fluoroelastomers exhibit improved characteristics of processability, particularly as regards the utilization in injection molding processes and the detaching from the molds, as well as of stability to heat.A process for preparing fluoroelastomers containing iodine or bromine atoms at the ends of the polymeric chain, in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, which process comprises polymerizing mixes of fluorinated monomers (VDF, TFE, HFP, FVE) in bulk, in suspension, in aqueous emulsion, or in solution of organic solvents by means of radical starters, in the presence of compounds capable of providing I.sup.- or Br.sup.- ions in the polymerization medium and conditions.

    摘要翻译: 其特征在于聚合物链末端存在碘或溴原子,其量为每个聚合物链等于或低于1个碘或溴原子,并且链中的溴含量为0.05-2重量% 指单体单元的总重量。 所述含氟弹性体表现出改进的加工性能,特别是关于注射成型工艺的利用和从模具的分离以及对热的稳定性。 在聚合物链的末端制备含有碘或溴原子的含氟弹性体的方法,其量等于或低于每个聚合物链1个碘或溴原子,该方法包括将氟化单体(VDF,TFE,HFP, FVE)在悬浮液中,在水性乳液中,或在有机溶剂的溶液中,通过自由基引发剂在能够在聚合介质和条件下提供I-或Br离子的化合物存在下进行。

    Peroxide curable fluoroelastomers particularly suitable for manufacturing O-rings
    7.
    发明授权
    Peroxide curable fluoroelastomers particularly suitable for manufacturing O-rings 失效
    过氧化物可固化的含氟弹性体特别适用于制造O型圈

    公开(公告)号:US06566471B1

    公开(公告)日:2003-05-20

    申请号:US08879319

    申请日:1997-06-19

    IPC分类号: C08F21612

    摘要: New fluoroelastomers are described, having iodine atoms in terminal position and monomeric units in the chain deriving from an iodinated olefin of formula: CHR═CH—Z—CH2CHR—I  (I) wherein: R is —H or —CH3; Z is a (per)fluoroalkylene radical C1-C18, linear or branched, optionally containing one or more ether oxygen atoms, or a (per)fluoropolyoxyalkylene radical. These products, upon peroxide curing, require extremely short post-curing treatments (around 30-60 minutes at 180°-230° C.) and are characterized by compression set values lower than 25% (measured on O-rings at 200° C. for 70 hours according to ASTM Standard D395 Method B).

    摘要翻译: 描述了新的含氟弹性体,其末端具有碘原子,并且衍生自下式的碘化烯烃的链中的单体单元:其中:R是-H或-CH 3; Z是直链或支链(任选地含有一个或多个醚氧原子)或(全)氟聚氧亚烷基的(全)氟亚烷基C1-C18。 过氧化物固化时,这些产品需要非常短的后固化处理(在180°-230℃下约30-60分钟),其特征在于压缩永久变形值低于25%(在200℃的O形环上测量) 根据ASTM标准D395方法B)70小时。

    Fluorinated polymer purification
    9.
    发明授权
    Fluorinated polymer purification 有权
    氟化聚合物纯化

    公开(公告)号:US6072020A

    公开(公告)日:2000-06-06

    申请号:US340136

    申请日:1999-06-28

    CPC分类号: B01D61/142 C08F6/06

    摘要: Purification process of amorphous polymers comprising the following steps:a) the amorphous polymer is dissolved in a fluorinated solvent;b) the solution containing the polymer is microfiltered by semipermeable membranes having a porosity in the range 0.05-0.5 .mu.m, and the permeate forms the polymeric solution purified by contaminants in suspension;c) the permeate coming from b) is ultrafiltered/nanofiltered by membranes with porosity in the range 10-500 kDa, and the retentate is formed by the polymeric solution purified from the contaminants in solution.

    摘要翻译: 无定形聚合物的纯化方法包括以下步骤:a)将无定形聚合物溶解在氟化溶剂中; b)含有聚合物的溶液通过孔隙率在0.05-0.5μm范围内的半透膜进行微过滤,并且渗透物形成由悬浮液中的污染物纯化的聚合物溶液; c)来自b)的渗透物通过孔隙率在10-500kDa范围内的膜进行超滤/纳滤,并且通过从溶液中的污染物纯化的聚合溶液形成滞留物。