Hiroshi Ukihashi

SYNTHESIS OF PERFLUORINATED VINYL ETHERS HAVING ESTER GROUP

Abstract A new efficient and convenient synthetic process of perfluorinated vinyl ethers containing an ester group was developed by pyrolysis in the presence of α-trifluoromethyl moiety without loss of –COF functional group followed by alcoholysis in high yield.

Kinetic Studies on the Radiation-Induced Solution Polymerization of Tetrafiuoroethyiene

Abstract Kinetic studies on the radiation-induced polymerization and postpolymerization of tetrafiuoroethyiene were carried out using chlorofluorohydrocarbons as the solvents. The mechanism of the radiochemical formation of radicals and the kinetics of the radical decay during in-source and postpolymerization are discussed. The remarkable post-polymerization is explained by the unusually slow rate of the bimolecular chain termination. The mechanism of chain transfer reactions is also discussed.