VERFAHREN ZUR HERSTELLUNG VON ZELLIGEN ODER KOMPAKTEN POLYURETHAN-POLYHARNSTOFF-FORMKOERPERN MIT VERBESSERTEN ENTFORMUNGSEIGENSCHAFTEN SOWIE INNERE FORMTRENNMITTEL FUER DAS POLYISOCYANAT-POLYADDITIONSVERFAHREN

• Main Authors: WERNER,FRANK,DR, ULRICH SCHMIDT,HANS, MARX,MATTHIAS,DR
• Format: Patent
• Language: German
• Published: 22.08.1985
• Edition: 4
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a process for the preparation of cellular, microcellular, and noncellular 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.