Tertiary polyisocyanate derivatives

US4748242A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Reinhard Halpaap · Odenthal, DE
• Josef Pedain · Cologne, DE
• Hans-Joachim Kreuder · Krefeld, DE
• Gerhard Klein · Monheim, DE
• Dieter Arlt · Cologne, DE

Key dates

• Filing date: Nov 12, 1986
• Grant date: May 31, 1988
• Expiry date: Nov 12, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2150/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to a process for the production of polyisocyanates containing isocyanurate groups by trimerizing a mixture of aliphatic-cycloaliphatic diisocyanates having a sterically unhindered isocyanate group bound to a primary aliphatic carbon atom and a sterically hindered isocyanate group bound to a tertiary carbon atom which forms a part of a cycloaliphatic ring system and 1,6-diisocyanatohexane. The present invention is also directed to the polyisocyanates containing isocyanurate groups produced according to this process and to their use, optionally in blocked form, as an isocyanate component in the production of polyisocyanate polyaddition products, preferably polyurethane lacquers.