Polymers based on CTFE/VCA/HFP or TFE/VCA/HFP
    31.
    发明申请
    Polymers based on CTFE/VCA/HFP or TFE/VCA/HFP 审中-公开
    基于CTFE / VCA / HFP或TFE / VCA / HFP的聚合物

    公开(公告)号:US20050084230A1

    公开(公告)日:2005-04-21

    申请号:US10847963

    申请日:2004-05-18

    CPC分类号: C08F234/02 C08F214/00

    摘要: A subject-matter of the invention is a copolymer comprising at least 3 units, P1, P2 and P3, with the following general formulae: with X1, X2 and X3, which are identical or different, taken from the group of atoms consisting of H, F, Cl and Br; with R1 taken from the group of atoms consisting of H, F, Cl and Br; with R2 a carbonaceous group comprising from 1 to 10 partially or completely fluorinated carbon atoms; with Y1 and Y2, which are identical or different, taken either from the group of atoms consisting of H, F, Cl and Br or from the family of the carbonaceous groups comprising from 1 to 10 carbon atoms; with Y3 a carbonyl group or a divalent carbonaceous group; the content of P2 unit in the copolymer being between 30 and 70 mol % for respectively a content of P1 and P3 units in the copolymer of between 70 and 30 mol % and the weight-average molar mass (Mw) of the said copolymer being between 103 and 106 g/mol. Preferably, the copolymer is of CTFE/VCA/HFP or TFE/VCA/HFP type.

    摘要翻译: 本发明的主题是包含至少3个单元的共聚物,P1,P2和P3,具有以下通式:X 1,X 2和X 2 相同或不同的取代自H,F,Cl和Br组成的原子团; 其中R 1取自H,F,Cl和Br组成的原子团; R 2是含有1至10个部分或完全氟化的碳原子的碳质基团; Y 1和Y 2相同或不同,取自H,F,Cl和Br组成的原子团或来自碳质物质的族 包含1至10个碳原子的基团; 具有Y 3或X 2的羰基或二价碳质基团; 共聚物中P2单元的含量分别为30-70mol%,共聚物中P1和P3单元的含量为70-30mol%,所述共聚物的重均摩尔质量(Mw)介于 10 3和106μg/ mol。 优选共聚物为CTFE / VCA / HFP或TFE / VCA / HFP型。

    Polymerization in the presence of a stable free radical and of an iniferter
    34.
    发明授权
    Polymerization in the presence of a stable free radical and of an iniferter 失效
    在稳定的自由基和引发剂的存在下进行聚合

    公开(公告)号:US06255422B1

    公开(公告)日:2001-07-03

    申请号:US08974091

    申请日:1997-11-19

    IPC分类号: C08F248

    摘要: The invention relates to a process for the polymerization or copolymerization of at least one monomer which can be polymerized or copolymerized by the radical route in the presence of a stable free radical and of an iniferter. The presence of the stable free radical greatly modifies the behavior of the iniferter during the polymerization or copolymerization, so that undesirable reactions are much reduced. It is possible, rapidly and with a high yield, to polymerize or copolymerize in the presence of an iniferter in order to result in a polymer or copolymer with a reduced polydispersity and with a monomodal molecular mass distribution.

    摘要翻译: 本发明涉及一种在稳定的自由基和引发剂存在下通过自由基途径聚合或共聚的至少一种单体的聚合或共聚的方法。稳定的自由基的存在极大地改变了该行为 在聚合或共聚期间的引发剂,使得不期望的反应大大降低。 在引发剂存在下,可以快速且高产率聚合或共聚,以产生具有降低的多分散性和单峰分子量分布的聚合物或共聚物。

    Optimized process for inert fluorinated silanes
    36.
    发明授权
    Optimized process for inert fluorinated silanes 失效
    惰性氟化硅烷的优化方法

    公开(公告)号:US5453528A

    公开(公告)日:1995-09-26

    申请号:US343322

    申请日:1994-11-21

    IPC分类号: C07F7/12 C07F7/08 C07F7/14

    摘要: The present invention relates to an improved method for preparing a fluorinated silane having the formulaR.sup.1.sub.4 Si (I)or the formulaR.sup.2.sub.3 Si(R.sup.3 SiR.sup.4.sub.2).sub.z R.sup.3 SiR.sup.2.sub.3(II)said method comprising reacting the corresponding halide-functional or alkoxy-functional silane with lithium aluminum hydride or sodium borohydride to form a hydride-functional silane and then reacting the latter with a vinyl-terminated fluorotelomer or an allyl-terminated fluorotelomer, wherein at least three R.sub.1 of said silane (I), at least two of the R.sup.2 and at least one R.sup.4 of said silane (II) are selected from derivatives of fluorotelomers or fluorocotelomers, z has an average value of 0 to 4 and R.sup.3 is a derivative of an alkylene-terminated telechelic divalent telomer or cotelomer.

    摘要翻译: 本发明涉及制备具有式R 14 Si(I)或式R 23 Si(R 3 SiR 42)z R 3 SiR 23(II)的氟化硅烷的改进方法,所述方法包括使相应的卤化物官能或烷氧基官能的硅烷与氢化铝锂或 硼氢化钠以形成氢化物官能的硅烷,然后使其与乙烯基封端的荧光调聚物或烯丙基封端的荧光调聚物反应,其中所述硅烷(I)的至少三个R1,R2和至少一个R 4 的所述硅烷(II)选自荧光酮或氟代托他物的衍生物,z的平均值为0至4,并且R 3为亚烷基封端的远电子二价调聚物或聚苯乙烯的衍生物。