ELASTOMERIC POLYURETHANES WITH IMPROVED PROPERTIES BASED ON CRYSTALLIZABLE POLYOLS IN COMBINATION WITH LOW MONOL POLYOXYPROPYLENE POLYOLS

摘要

Polyurethane elastomers of improved elongation, tensile strength and other physical properties are prepared from a polyol component containing a cristallizable polyol and from 5 to 35 equivalent percent of a low monol polyoxypropylene polyol by one-shot, quasi-prepolymer, and preferably, by prepolymer techniques involving chain extension with an aliphatic diol or aromatic amine.