Isocyanate-terminated prepolymers derived from polyether polyol mixtures having low monol content and their use in polyurethanes.

摘要

An isocyanate-terminated prepolymer derived from a polyether polyol mixture including a polyether diol and a polyether polyol, a monol content of less than 15 mole percent and an average hydroxyl functionality in the range of about 1.9 to about 2.4. The prepolymer may be moisture cured or chain extended to give a polyurethane with improved tensile strength, tear strength and reduced stress at high elongation.