Patents Assigned to Nipon Mektron Ltd
  • Novel perfluoropolyether and process for producing the same
    Patent number: 4952735
    Abstract: A novel perfluoropolyether containing 0.1 to 10% by weight of halogen atoms as bonded in the molecule is obtained by reacting tetrafluoroethylene with oxygen in a fluorinated solvent or a chlorofluorinated solvent under ultraviolet irradiation in the presence of a halogenated hydrocarbon chain transfer agent having a chain transfer coefficient with respect to methyl methacrylate of at least 5.times.10.sup.-4.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: August 28, 1990
    Assignee: Nipon Mektron Ltd
    Inventors: Kazuo Kobayashi, Masashi Fukazawa, Shinji Ishikawa