Manufacturing method for an aromatic isocyanate compound

US11591293B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Volker Maywald · Ludwigshafen, DE
• Roland Goetz · Ludwigshafen, DE
• Daniel Saelinger · Ludwigshafen, DE
• Birgit Gockel · Ludwigshafen, DE
• Manfred Ehresmann · Ludwigshafen, DE
• Markus Jegelka · Ludwigshafen, DE
• Joaquim Henrique Teles · Waldsee, DE

Key dates

• Filing date: Dec 11, 2019
• Grant date: Feb 28, 2023
• Expiry date: Dec 11, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C263/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for manufacturing an isocyanate compound represented by formula (2) (2) wherein R1 represents a methyl group, an ethyl group, a cyclopropyl group, a chlorine atom, a bromine atom, or a methoxy group; and R2 represents an alkyl group having 1 to 6 carbon atoms, comprising reacting an aniline compound represented by formula (1) (1) wherein R1 and R2 are defined as above with a phosgene compound at a temperature of from 40° C. to the boiling point of the inert solvent in at least one kind of inert solvent.