process for making a polyurethane elastomer, polyurethane elastomer, polyurethane prepolymer and copolyester polyol

摘要

Polyurethane elastomers formed from prepolymers derived from copolyester polyols. The copolyester polyols have segments derived from one or more polyesters and caprolactone or polycaprolactone. The polyurethane elastomers have good hardness stability at temperatures ranging from 0° C. to 30° C. and preferably have good hydrolytic stability.