INTERNAL RELEASE AGENTS FOR POLYISOCYANATE ADDITION POLYMERIZATION, THEIR USE IN THE PREPARATION OF CELLULAR, MICROCELLULAR, AND NONCELLULAR POLYURETHANE-POLYUREA MOLDED PARTS HAVING IMPROVED DEMOLDING PROPERTIES

摘要

INTERNAL RELEASE AGENTS FOR POLYISOCYANATE ADDITION POLYMERIZATION, THEIR USE IN THE PREPARATION OF CELLULAR, MICROCELLULAR, AND NONCELLULAR POLYURETHANEPOLYUREA MOLDED PARTS HAVING IMPROVED DEMOLDING PROPERTIES The invention relates to a process for the preparation of cellular, microcellular, and noncelluar polyurethane polyurea molded parts with improved demolding characteristics through the reaction injection molding technique wherein unique internal mold release agents are used which are esters and/or amides prepared by reacting a mixture of montanic acid and a carboxylic acid having ten or more carbon atoms with a polyol, alkanolamine, or polyamine.