FLUOROSULPHONATED NITRILE CROSSLINKABLE ELASTOMERS BASED ON VINYLIDENE FLUORIDE WITH LOW TG AND METHODS FOR PREPARING SAME

摘要

The invention concerns monomers corresponding to formula: Z2C(CWX(CY2)nCN, wherein: X represents an oxygen atom or no atom; Z and Y represent a hydrogen or fluorine atom; W represents a hydrogen or fluorine atom or a CF3 group; and n is a natural integer between 0 an 10 inclusively. Said monomers enable by means of novel copolymerisation and crosslinking methods to prepare fluorosulphonated nitrile elastomers having very low glass transition temperatures (Tg).