No peroxy oxygen and perfluoropoly give a perfluoroalkyl epoxy group - perfluoropoly error containing been to Tel chain by Yan Tsute position - ether and their derivatives

摘要

Perfluoropolyethers having fluorinated epoxy groups positioned along their perfluoropolyether chain, and free from peroxidic oxygen, are obtained by means of a low-temperature oxidation process, in the liquid phase, with molecular oxygen and in the presence of U.V. light, of a mixture of a perfluorinated monoolefin and a perfluorinated conjugated diene, and by the subsequent photochemical decomposition of the peroxy groups contained in the photooxidation product, carried out by treating the peroxy-groups containing product with U.V. light at a temperature of from 0 DEG C to 160 DEG C. Derivatives of said epoxy containing perfluoropolyethers in which the epoxy groups have been converted to functional groups are also disclosed.