Novel perfluoropolyether and process for producing the same

Details Novel perfluoropolyether and process for producing the same Novel perfluoropolyether and process for producing the same

1987-11-02

1989-08-22

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415794, 20415811, 20415812, C07C 4101

Patent

active

048592994

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.-5.

REFERENCES:
patent: 3704214 (1972-11-01), Sianesi et al.
patent: 3715378 (1973-02-01), Sianesi et al.

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