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    • 4. 发明申请
    • POLYMERISATION OF HEXAFLUOROPROPYLENE OXIDE
    • 六氟丙烯氧化物的聚合
    • WO2009118348A3
    • 2010-06-10
    • PCT/EP2009053532
    • 2009-03-25
    • CLARIANT INT LTDDANNER BERNARD
    • DANNER BERNARD
    • C08G65/22
    • C08G65/226
    • Process for the oligomerization of hexafluoropropylene oxide (HFPO) in which the sum of the dimers, trimers, tetramers, pentamers and hexamers represents less than 20% of the weight of the polymerized HFPO, the oligomers other than the dimers, trimers, tetramers, pentamers and hexamers (the remaining oligomers) having an average molecular weight ranging between 1100 and 4000 g/mol, characterized in that the process comprises the steps of contacting hexafluoropropylene oxide (HFPO) at a temperature between -30°C to + 50°C with a catalyst system selected from potassium fluoride and di-, tri- or tetraethyleneglycol-dimethylether in the presence of a solvent which is selected from perfluorinated aliphatic or aromatic hydrocarbon with more than 3 and less than 12 C-atoms and optionally a polar group but not comprising chlorine or bromine partially fluorinated aliphatic or aromatic hydrocarbon with more than 3 and less than 12 C-atoms and optionally a polar group but not comprising chlorine or bromine at a pressure of less than 3 bars by controlled monomer addition continuous feeding or by adding the monomer in one or two portions (shots).
    • 六聚环氧丙烷(HFPO)的低聚方法,其中二聚体,三聚体,四聚体,五聚体和六聚体的总和小于聚合的HFPO的重量的20%,二聚体,三聚体,四聚体,五聚体以外的低聚物 和平均分子量为1100-4000g / mol的六聚体(剩余的低聚物),其特征在于该方法包括以下步骤:在-30℃至+ 50℃之间的温度下将六氟环氧丙烷(HFPO)与 一种选自氟化钾和二 - ,三 - 或四乙二醇 - 二甲基醚的催化剂体系,在溶剂存在下,该溶剂选自具有多于3个且小于12个C原子的全氟化脂族或芳族烃,并且任选地是极性基团 包括具有多于3个且小于12个C原子的氯或溴部分氟化脂族或芳族烃,以及任选的极性基团,但不包含二氢卟酚 e或溴在小于3巴的压力下通过受控单体加入连续进料或通过在一个或两个部分(射击)中添加单体。