Thermoset polyurethane prepared from a polypropylene ether triol obtained using a double metal cyanide complex catalyst, ethylene glycol and tolylene diisocyanate

摘要

A thermoset, segmented and elastomeric polypropylene ether urethane is made by reacting together tolylene diisocyanate, ethylene glycol and a polypropylene ether triol having an average molecular weight of from 7,000 to 14,000, in certain ratios. The resulting polyurethane exhibits a temperature retraction TR-10 of less than about -35 DEG C. and a Goodyear-Healy rebound of greater than about 55%.