New polyethers synthetic elastomers comprising in particular elastomers polyoxytétraméthyléniques, and their manufacture

摘要

Sulphur containing elastomeric filaments ae produced by reacting a linear polymer of the formula FORM:1079503/C3/1 wherein G is a linear polyether, R is an oxyalkylene radical, X is halogen other than fluorine and n is an integer, with alkali metal sulphide to form a polymer having side chains of sulphur terminating in an alkali metal atom, and extruding this into an aqueous coagulant to form a cross-linked polymer of the formula FORM:1079503/C3/2 wherein x is a integer. The aqueous coagulant may be water, NaCl soln. or H2O2. The linear polymer is prepared by copolymerizing a major proportion of tetrahydrofuran with a minor proportion of a monocyclic ether having a 3, 4 or 5-membered ring and containing a halogen atom, e.g. epichlorhydrin, epibromhydrin and chloroethyl glycidyl ether.