Polyether ester elastomer comprising polytrimethylene ether ester soft segment and trimethylene ester hard segment

A a about 90 to about 60% wt% system 1,3 to propylidene ester softening segments and about 10 to about 40% weight of 1,3 to propylidene the hard segments of ester elastomers, and product forming a wherein the other fibre. The fibre has good physical property, comprising excellent) and a returning.