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发明授权
US06211415B1 Process for thermal decomposition of hexafluoropropylene oxide oligomers 有权
六氟环氧丙烷低聚物热分解方法

  • 专利标题： Process for thermal decomposition of hexafluoropropylene oxide oligomers
  • 专利标题（中）： 六氟环氧丙烷低聚物热分解方法
  • 申请号： US09308587
    申请日： 1999-05-21
  • 公开(公告)号： US06211415B1
    公开(公告)日： 2001-04-03
  • 发明人: Shigeru Morita , Toshihiko Amano
  • 申请人： Shigeru Morita , Toshihiko Amano
  • 优先权： JP8-312244 19961122
  • 主分类号： C07C4311
  • IPC分类号： C07C4311
Process for thermal decomposition of hexafluoropropylene oxide oligomers
摘要：
A hexafluoropropylene oxide oligomer of the formula: RfO[CF(CF3)CF2O]nCF(CF3)COF in which Rf is a group represented by the formula: F(CF2)m— in which m is an integer of 1 to 8, or the formula: (CF3)2CF(CF2)q— in which q is an integer of 0 to 6, and n is a number of 3 to 20 is heated and thermally decomposed in a solvent at a temperature of at least 100° C. in the presence of a compound which generates a fluoride (F−) ion to obtain mainly the dimer, trimer and tetramer of hexafluoropropylene oxide. Thus, the valuable low molecular weight oligomers of hexafluoropropylene oxide can be obtained from high molecular weight oligomers of hexafluoropropylene oxide which have been discarded.
摘要（中）：

Rf为CFF（CF 3）CF 2 O] n CF（CF 3）COF的六氟环氧丙烷低聚物，其中R f为由式F（CF 2）m - 表示的基团，其中m为1至8的整数，或 式（CF3）2CF（CF2）q-其中q为0-6的整数，n为3至20的数，在溶剂中在至少100℃的温度下加热和热分解。 在产生氟化物（F-）离子的化合物的存在下，主要得到六氟环氧丙烷的二聚体，三聚体和四聚体。 因此，六氟环氧丙烷的有价值的低分子量低聚物可以从被丢弃的六氟环氧丙烷的高分子量低聚物获得。

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