LOW TEMPERATURE FLUOROCARBON ELASTOMERS

摘要

A fluorocarbon polymer which includes: repeating units derived from one or more perfluorinated ethers of the formula CF2=CFO-(CF2)m-(O(CF2)p)n-ORf1 wherein Rf1 is a perfluorinated (C1-C4) alkyl group, m=1-4, n=0-6, and p=1-2 ; and repeating units derived from vinylidene fluoride; wherein the polymer ha s a glass transition temperature of -50 ~C or lower and an oxygen to carbon ratio of at least about 0.2.