Process for preparing isocyanates in dialkyl carbonates as solvent

US10093615B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Manfred Heilig · Ludwigshafen am Rhein, DE
• Thomas Schulz · Bad Pyrmont, DE
• Torsten Mattke · Ludwigshafen am Rhein, DE
• Filip Nevejans · Sint-Niklaas, BE
• Kai Thiele · Ekeren, BE
• Stefan Maixner · Schwetzingen, DE

Key dates

• Filing date: Apr 21, 2015
• Grant date: Oct 9, 2018
• Expiry date: Apr 21, 2035

Classification

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

Abstract

The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.