Process for the production of polyisocyanates containing isocyanurate groups, the compounds which may be obtained according to this process, and the use thereof for the production of polyurethanes

US4552946A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Joachim Scholl · Cologne, DE
• Josef Pedain · Cologne, DE
• Bernd Riberi · Odenthal, DE
• Gerhard Mennicken · Leverkusen, DE

Key dates

• Filing date: Jan 19, 1984
• Grant date: Nov 12, 1985
• Expiry date: Jan 19, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/795
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a new process for the production of polyisocyanates containing isocyanurate groups by partial trimerization of the isocyanate groups of organic polyisocyanates comprising PA0 (a) compounds or mixtures of compounds corresponding to the formula ##STR1## wherein R represents a saturated, aliphatic hydrocarbon radical having from 8 to 15 carbon atoms, and optionally PA0 (b) up to about 95 NCO equivalent %, based on the total of (a)+(b), of other organic polyisocyantes. This invention also relates to the compounds which may be obtained according to this process and to the use thereof for the production of isocyanate-polyaddition products such as polyurethanes.