Method for producing 1,5-pentanediisocyanate in the gas phase

US10329248B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Josef Sanders · Leverkusen, DE
• Martin Ehrig · Leverkusen, DE
• Reinhard Halpaap · Odenthal, DE
• Manfred Keller-Killewald · Wasserburg am Inn, DE
• Armin Schymura · Neuss, DE
• Dietmar Wastian · Dormagen, DE

Key dates

• Filing date: Dec 7, 2018
• Grant date: Jun 25, 2019
• Expiry date: Dec 7, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C265/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing 1,5-pentanediisocyanate (PDI) by reacting 1,5-pentanediamine (PDA) with phosgene in the gas phase.