Method for producing TDI-trimerisates with high purity

US10676448B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Josef Sanders · Leverkusen, DE
• Andreas Hecking · Langenfeld, DE
• Reinhard Halpaap · Odenthal, DE
• Frank Richter · Frankfurt, DE
• Oswald Wilmes · Recklinghausen, DE
• Jan Busch · Düsseldorf, DE
• Tim Loddenkemper · Dormagen, DE
• Friedhelm Steffens · Leverkusen, DE
• Stefan Groth · Leverkusen, DE

Key dates

• Filing date: Oct 3, 2018
• Grant date: Jun 9, 2020
• Expiry date: Oct 3, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J175/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.