Process for preparing C5 aldehydes

US11840506B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Dirk Fridag · Haltern am See, DE
• Johannes Knossalla · Gahlen, DE
• Alexander Brächer · Haltern am See, DE
• Peter Kucmierczyk · Herne, DE
• Anna Chiara Sale · Recklinghausen, DE
• Robert Franke · Marl, DE
• Ana Markovic · Haltern am See, DE

Key dates

• Filing date: May 2, 2023
• Grant date: Dec 12, 2023
• Expiry date: May 2, 2043

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/83
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing C5 aldehydes involves hydroformylation of butenes with synthesis gas in the presence of a homogeneous catalyst system and a solvent. It is a feature of the process that the aldehyde concentration in the reaction mixture is limited.