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    • 1. 发明公开
    • Fluoropolymer dispersions
    • 含氟聚合物分散体
    • EP0894839A3
    • 1999-06-02
    • EP98114152.6
    • 1998-07-29
    • Ausimont S.p.A.
    • Chittofrati, AlbaLazzari, PaoloLenti, Daria
    • C09D127/18C09G1/00C11D3/37C08F6/20
    • C08J3/09C08J2327/18C08L27/18C09D7/40C09D127/18C09G1/00C11D3/3749
    • Dispersions, obtained starting from a system formed by a (per)fluorinated polymer in polar solvent, comprising at least:
      0.1-30% by weight of a polytetrafluoroethylene or of tetrafluoroethylene copolymers with other ethylenically unsaturated, totally or partially fluorinated, monomers; 50-99% by weight of fluorinated liquid; - 0.01-5% by weight of surfactant selected from carboxylic acids with PFPE chain and nonionic surfactants having a perfluoroalkylic or perfluoropolyether chain with a oxyalkylenic repeating unit number lower than or equal to 6; polar solvent (water and/or alcohol) complement to 100; and characterized in that they have a polar solvent/polymer weight ratio lower than that of the initial system containing the (per)fluoropolymer used to prepare the dispersion.
    • 从(全)氟化聚合物在极性溶剂中形成的体系开始获得的分散体,其包含至少:0.1-30重量%的聚四氟乙烯或四氟乙烯共聚物与其他烯属不饱和的全部或部分氟化的单体; 50-99重量%的氟化液体; - 0.01-5重量%的选自具有PFPE链的羧酸和具有氧亚烷基重复单元数低于或等于6的全氟烷基或全氟聚醚链的非离子表面活性剂的表面活性剂; 极性溶剂(水和/或醇)补足至100; 并且其特征在于它们具有低于含有用于制备分散体的(全)氟聚合物的初始体系的极性溶剂/聚合物重量比。
    • 2. 发明公开
    • Fluoropolymer dispersions
    • Fluorpolymerdispersionen
    • EP0894839A2
    • 1999-02-03
    • EP98114152.6
    • 1998-07-29
    • Ausimont S.p.A.
    • Chittofrati, AlbaLazzari, PaoloLenti, Daria
    • C09D127/18C09G1/00C11D3/37C08F6/20
    • C08J3/09C08J2327/18C08L27/18C09D7/40C09D127/18C09G1/00C11D3/3749
    • Dispersions, obtained starting from a system formed by a (per)fluorinated polymer in polar solvent, comprising at least:

      0.1-30% by weight of a polytetrafluoroethylene or of tetrafluoroethylene copolymers with other ethylenically unsaturated, totally or partially fluorinated, monomers;
      50-99% by weight of fluorinated liquid; - 0.01-5% by weight of surfactant selected from carboxylic acids with PFPE chain and nonionic surfactants having a perfluoroalkylic or perfluoropolyether chain with a oxyalkylenic repeating unit number lower than or equal to 6;
      polar solvent (water and/or alcohol) complement to 100;
      and characterized in that they have a polar solvent/polymer weight ratio lower than that of the initial system containing the (per)fluoropolymer used to prepare the dispersion.
    • 从由极性溶剂中的(全)氟化聚合物形成的体系开始获得的分散体包含至少0.1-30重量%的聚四氟乙烯或与其它烯属不饱和的全部或部分氟化的单体的四氟乙烯共聚物; 50-99重量%的氟化液体; - 0.01-5重量%的选自具有PFPE链的羧酸的表面活性剂和具有低于或等于6的氧化烯键式重复单元数的全氟烷基或全氟聚醚链的非离子表面活性剂; 极性溶剂(水和/或醇)互补100; 其特征在于它们的极性溶剂/聚合物重量比低于含有用于制备分散体的(全)含氟聚合物的初始体系的极性溶剂/聚合物重量比。
    • 7. 发明公开
    • VDF polymerization process
    • VDF-Polymerisationsverfahren
    • EP0816397A1
    • 1998-01-07
    • EP97110545.7
    • 1997-06-27
    • Ausimont S.p.A.
    • Brinati, GiulioLazzari, PaoloArcella, Vincenzo
    • C08F14/22
    • C08F14/22C08F2/16
    • VDF polymerization process, optionally modified with small amounts of one or more fluoro-containing comonomers, carried out in the presence of a microemulsion comprising a (per)fluoropolyether having neutral end groups, having number average molecular weight between 400 and 3000, and a surfactant based on perfluoropolyethers with salified acid end groups, said surfactant having a number molecular weight Mn comprised between 400-600 and having a distribution of molecular weights such that fractions having a number average molecular weight higher than 700 are not present, or are in amount less than 5% by weight.
    • VDF聚合方法,任选用少量一种或多种含氟共聚单体进行改性,所述共聚单体在包含数均分子量在400和3000之间的具有中性端基的(全)氟聚醚的微乳液和表面活性剂 基于具有成盐酸端基的全氟聚醚,所述表面活性剂的数均分子量Mn为400-600,分子量分布为数均分子量高于700的部分不存在,或少量 超过5重量%。
    • 9. 发明公开
    • Process for the suspension polymerization of fluroethylenes
    • 悬浮聚合物氟化乙烯
    • EP0818490A2
    • 1998-01-14
    • EP97111448.3
    • 1997-07-07
    • Ausimont S.p.A.
    • Abusleme, Julio A.Lazzari, Paolo
    • C08G65/00C08F14/00C08G65/32C08F14/18
    • C08G65/007C08F14/18C08F2/16
    • Use of surfactants in the suspension polymerization of fluorinated monomers for preparing fluoropolymers containing hydrogen, said surfacants having the general formula:

              R f -[L-(OCHR 1 -CHR 2 ) m -OZ)] i

         wherein:

      i is equal to 1 or 2;
      m is an integer comprised between 4 and 60;
      L can be chosen between: -(CFY-CO-O) p R'- and
      -(CFY-CO-NH) p R'-
      wherein p is an integer equal to 0 or to 1;
      Y = F, CF 3 ; R'= alkylic radical C 1 -C 5 , linear or branched when possible;
      R 1 , R 2 can be both H or the former H and the latter CH 3 ;
      Z can be H, alkyl radical C 1 -C 3 , linear or branched when possible; or (CH 2 ) n OH with n an integer from 1 to 6;
      R f is a perfluoroalkylic radical or a perfluoropolyether radical, having a number average molecular weight comprised between 250 and 1500.
    • 在氟化单体的悬浮聚合中使用表面活性剂制备含氢的含氟聚合物,所述表面活性剂具有以下通式:Rf-ÄL-(OCHR1-CHR2)m-OZ)Üi其中:i等于1或2; m是4至60之间的整数; L可以选自: - (CFY-CO-O)pR'-和 - (CFY-CO-NH)pR'-其中p是等于0或1的整数; Y = F,CF3; R'=烷基C1-C5,尽可能直链或支链; R1,R2可以是H或前者H,后者可以是CH3; Z可以是H,烷基C1-C3,尽可能直链或支链; 或(C 1)n OH,n为1至6的整数; Rf是全氟烷基或全氟聚醚基,其数均分子量在250和1500之间。