molded polyurethane foam, carrier seat comprising the same, process for the preparation and process for the manufacture thereof, and process for the preparation of two or more molded polyurethane foams having different physicochemical properties.

摘要

Molded polyurethane seating foams exhibiting low resonant frequencies and low ball rebound are produced by reacting an isocyanate-terminated prepolymer prepared from a polyol component comprising in major part one or more low intrinsic unsaturation substantially polyoxypropylene polyols and/or polymer polyols with a blowing/chain extending stream comprising water and optionally amines and alkanolamines.