Difunctional Monomers Based on Perfluoropropylene Telomers

摘要

Telomers of perfluoropropylene with alpha,omega-diiodoperfluoroalkanes wereconverted to branched-chain difunctional condensation monomers. The reaction of ethylene with the telomers gave alpha,omega-bis(iodoethyl)perfluoroalkanes, which were converted to the corresponding diols by reaction with fuming sulfuric acid. The reaction of the branched-chain alpha,omega-bis(iodoethyl)-perfluoroal with sodium azide gave the corresponding alpha,omega-bis-(azidoethyl)-perfluoroaHydrogenation of the alpha,omega-bis(azidoethyl)-perfluoroalkanes gave diamines. Phosgenation of the amino groups gave diisocyanates. Synthesis, Monomers, Fluorine.