Fluorosulphonated nitrile crosslinkable elastomers based on vinylidene fluorine with low tg and methods for preparing same

摘要

Monomers corresponding to the formula Z2C=CWX(CY2)nCN, in which X represents an atom of oxygen or no atom, Z and Y represent an atom of hydrogen or fluorine, W represents an atom of hydrogen or fluorine or a CF3 group and n is a natural integer between 0 and 10 inclusively. These monomers enable by means of novel copolymerization methods to prepare fluorosulphonated nitrite elastomers having very low glass transition temperatures (Tg).