Patent ID: 9688796
Date: 2017-06-27
CPC Classifications: C08F,C09D

Claim:
1. A tetrafluoroethylene copolymer comprising repeating units derived from tetrafluoroethylene and from 0.12 to 1.40% by weight, based on the total weight of the copolymer, of units derived from a comonomer of the general formula: wherein n′ and m represent, independently from each other, either 1 or 0; and Rf′ represents a linear, branched, cyclic or acyclic perfluorinated alkylene unit that may contain one or more ether oxygen atoms and that has up to 8 carbon atoms; further wherein the copolymer has a melting point of at least 317° C., a melt flow index at 372° C. and a 5 kg load of from about 0.60 g/10 min up to about 15 g/10 min.