| abstract |
NEW MATERIAL:The fluorine compound of formula (X 1 and X 2 are same or different H or Cl). n EXAMPLE: Trichloromethyl 2,3,3,3,-tetrafluoropropanoate. n USE: Useful as an intermediate for 2,3,3,3-tetrafluoropropene. The 2,3,3,3- tetrafluoropropene is useful as a monomer for copolymer of e.g. tetrafluoroethylene, trifluoroethylene or vinylidene fluoride. It is also useful as a modification monomer effective in improving high-temperature strength and cracking resistance of a polymer by the addition of a small amount of the compound e.g. to an ethylene/tetrafluoroethylene copolymer. n PREPARATION: The compound of formula is produced by contacting methyl 2,3,3,3-tetrafluoropropanoate with chlorine under irradiation of light. The reaction temperature is preferably 20W150°C. n COPYRIGHT: (C)1988,JPO&Japio |