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

US4581387A · kind A · utility

Assignee

• BASF SE

Inventors

• Frank Werner · Jackson, US
• Matthias Marx · Fürstenfeldbruck, DE
• Hans U. Schmidt · Griesheim, DE

Key dates

• Filing date: Feb 13, 1985
• Grant date: Apr 8, 1986
• Expiry date: Feb 13, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2125/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

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.