Process for the preparation of optionally cellular polyurethane-polyurea molded parts using urethane group- and isocyanurate group-containing 2,4- and/or 2,6-toluene diisocyanates

US4698371A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Sep 26, 1985
• Grant date: Oct 6, 1987
• Expiry date: Sep 26, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S264/83
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of cellular or non-cellular polyurethane-polyurea molded articles. The new process involves the use of urethane and isocyanurate group modified 2,4- and/or 2,6-toluene diisocyanate mixtures as the polyisocyanate component to improve the flowability of the reaction mixture without adversely affecting the mechanical properties of the resulting molded articles.