Fluorine-containing material

摘要

A rubber or gel material in the form of a fluoroelastomer obtained by crosslinking of a curable composition comprising a linear perfluoropolyether dialkenyl compound, a fluorinated organopolysiloxane having at least three silicon-bonded hydrogen atoms, and a hydrosilylation catalyst has a swelling degree of up to 20% in dimethyl ether. The rubber or gel material has improved dimethyl ether resistance as well as heat resistance and freeze resistance.