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    • 2. 发明公开
    • Fluorine-containing copolyacetals and their preparation
    • Fluor enthaltende Copolyacetale und ihre Herstellung。
    • EP0587997A1
    • 1994-03-23
    • EP93109104.5
    • 1993-06-07
    • AUSIMONT S.p.A.
    • Danusso, FerdinandoStrepparola, EzioLevi, MarinellaTonelli, ClaudioTurri, Stefano
    • C08G2/38C08G4/00
    • C08G65/324C08G2/38C08G65/007C08G65/329C08G65/331
    • 1) New fluorine-containing compounds having polyacetalic structure, of general formula:



              (I)   [Rf-CH₂O(CH₂O) c -CH₂⁆ n



      where:
      Rf = a perfluorooxyalkylene chain having M ¯ n from 500 to 5,000;
      c = 1 - 10;
      n = 2 - 100.
      2) A process for preparing them, which comprises carrying out the polycondensation of diols having formula:



              (II)   HOCH₂RfCH₂OH



         with formaldehyde, in mass or in the presence of solvents, in an acid medium.

      The compounds of formula (I) can be oligomeric compounds (polymerization degree x ¯ n from 2 to about 20) or polymeric compounds ( x ¯ n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.
    • 1)具有以下通式的具有聚缩醛结构的新的含氟化合物:(I)[Rf-CH 2 O(CH 2 O)c -CH 2&rsqbstr&n其中:Rf = Mn为500-5,000的全氟氧化烯链; c = 1〜10; n = 2-100。2)一种制备它们的方法,其包括在酸性介质中以质量或在溶剂存在下,使式(II)HOCH 2 R f CH 2 OH与甲醛进行缩聚反应。 式(I)化合物可以是低聚化合物(聚合度xn为2至约20)或聚合化合物(xn为约20至约100)。 它们表现出对热和化学试剂的高稳定性,Tg值与用于制备它们的二醇的Tg值略有不同。
    • 8. 发明公开
    • Thermoplastic polyesters containing perfluoropolyoxyalkylene sequences
    • 热塑性聚酯薄膜全氟氧烷基烯烃。
    • EP0621296A2
    • 1994-10-26
    • EP94105854.7
    • 1994-04-15
    • AUSIMONT S.p.A.
    • Turri, StefanoGianotti, GiuseppeLevi, MarinellaTonelli, Claudio
    • C08G63/682C08G63/672
    • C08G63/6826C08G63/672
    • Fluorinated thermoplastic elastomers having a block structure:



              -[-R f -H₁-H₂-H₁-]-



      where -R f - is a perfluoropolyoxyalkylene sequence of formula:



              -CF₂O-(CF₂CF₂O) m -(CF₂O) n -CF₂-



      with m/n = 0.2 + 5, H₁ and H₂, equal or different from each other, are bivalent radicals having arylene, alkylarylene, alkylene or cycloalkylene structure, optionally containing fluorine and/or other heteroatoms selected among oxygen, sulphur, nitrogen.
      Such products are obtainable by utilizing a perfluoropolyoxyalkylene diol having a functionality at least equal to 1.97, preferably at least equal to 1.99, and are characterized by a tensile strength at 23°C at least 50% higher than that of the corresponding polyesters obtained starting from perfluoropolyoxyalkylene diols having a functionality not higher than 1.96.
    • 具有嵌段结构的氟化热塑性弹性体:其中-Rf-是式-CF 2 O-(CF 2 CF 2 O)m - (CF 2 O)n -CF 2 - 的全氟聚氧亚烷基,m- n = 0.2 + 5,H1和H2彼此相同或不同,是具有亚芳基,烷基亚芳基,亚烷基或亚环烷基结构的二价基团,任选地含有选自氧,硫,氮中的氟和/或其它杂原子。 这样的产物可通过使用具有至少等于1.97,优选至少等于1.99的官能度的全氟聚氧亚烷基二醇获得,其特征在于在23℃下的拉伸强度比从相应的聚酯开始获得的相应聚酯的拉伸强度高至少50% 全氟聚氧亚烷基二醇的官能度不高于1.96。
    • 10. 发明公开
    • Fluorinated oligourethanes
    • 氟代低聚氨酯
    • EP1059319A2
    • 2000-12-13
    • EP00112141.7
    • 2000-06-06
    • Ausimont S.p.A.
    • Turri, StefanoLevi, MarinellaTrombetta, Tania
    • C08G18/38C08G18/50
    • C08G18/792C08G18/0814C08G18/2885C08G18/5015C08G18/672C08G18/50
    • Fluorinated oligourethanes, having number average molecular weight lower than or equal to 9,000, having a branched structure, formed of the following monomers and macromers:

      a) aliphatic, cycloaliphatic or aromatic polyisocyanates,
      b) heterofunctional hydrogenated monomers having general formula:

              X 0 -(CR 1 A R 2 A ) b -Y 0      (Ib)

      one or more of the following compounds:
      c) bifunctional hydroxyl (per)fluoropolyethers (PFPE diols) having number average molecular weight in the range 400-3,000,
      e) monofunctional hydroxyl (per)fluoropolyethers or monofunctional hydroxyl (per)fluoroalkanes (e'), having number average molecular weight in the range 300-1,000,
      and optionally the following compunds:
      d) heterofunctional monomers,
      d I ) hydrogen-active compounds, capable to form bonds with the NCO functions stable at the hydrolysis but weak at heat.
    • 数均分子量低于或等于9,000的氟化低聚氨酯具有支链结构,由以下单体和大分子单体形成:a)脂族,脂环族或芳族多异氰酸酯,b)具有通式X 0-(CR 1)的异型氢化单体 b)一种或多种以下化合物:c)数均分子量在400-3,000范围内的双官能羟基(全)氟聚醚(PFPE二醇),e)单官能羟基(每) 含氟聚醚或数均分子量在300-1,000范围内的单官能羟基(全)氟代烷(e'),以及任选的以下化合物:d)能形成键的异型官能单体d 1)氢活性化合物 NCO的功能在水解时稳定,但在加热下较弱。