The present invention is based on quad-fluoropolymer suitable for the
preparation of a fluoroelastomer. The fluoropolymer comprises repeating
units derived from 10 to 40 mol % of tetrafluoroethylene, 40 to 65 mol %
of vinylidene fluoride, 1 to 30 mol % of a perfluorinated vinyl ether of
the formula CF.sub.2.dbd.CFOCF.sub.2 CF.sub.2 CF.sub.2 OCF.sub.3, 1 to 20
mol % of perfluoromethyl vinylether.
La actual invención se basa en el cuadra'ngulo-fluoropolymer conveniente para la preparación de un fluoroelastomer. El fluoropolymer abarca la repetición de las unidades derivadas a partir del 10 a 40 mol de % del tetrafluoroethylene, 40 a 65 mol de % del fluoruro del vinylidene, 1 a 30 mol de % de un éter perfluorinated del vinilo del fórmula CF.sub.2.dbd.CFOCF.sub.2 CF.sub.2 CF.sub.2 OCF.sub.3, 1 a 20 mol de % de vinylether del perfluoromethyl.
