| abstract |
A fluoroelastomer comprising 2 to 8% by mole ofntetrafluoroethylene, 14 to 25% by mole of perfluoro(alkyl vinylnether) and 70 to 85% by mole of vinylidene fluoride, sum totalnbeing 100% by mole, obtained by copolymerization in thenpresence of a bromine-containing monomer compound and an iodinenand bromine-containing compound, has distinguished lowntemperature characteristics, solvent resistance and chemicalnresistance by itself. |