Method for producing compounds having oxazolidinone groups

US11142608B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Berend Eling · Ludwigshafen, DE
• Hans-Josef Thomas · Korschenbroich, DE
• Peter Deglmann · Ludwigshafen, DE
• Janina Hengelsberg · Bohmte, DE
• Tristan Pelzer · Hamburg, DE
• Gerrit Luinstra · Mannheim, DE

Key dates

• Filing date: Mar 15, 2018
• Grant date: Oct 12, 2021
• Expiry date: Jul 9, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L63/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Described herein are processes for producing moldings comprising oxazolidinone groups, where polyisocyanate (a) is mixed with at least one organic compound (b) having two or more epoxide groups, at least one catalyst (c) for the isocyanate/epoxide reaction, and optionally auxiliary and additive materials (d) to form a reaction mixture, which is introduced into or applied to a mold and reacted to give moldings including oxazolidinone groups, where the catalyst (c) for the isocyanate/epoxide reaction includes a compound of the general formula [M(R1)(R2)(R3)(R4)]+ [X In]−, where M is a nitrogen atom or a phosphorus atom, R1, R2, R3 and R4 are an organic radical, X is fluorine, chlorine, bromine or iodine, I is iodine, and n stands for rational numbers from 0.1 to 10.