Method for producing tricyclodecandialdehyde

US7321068B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rainer Papp · Speyer, DE
• Rocco Paciello · Bad Dürkheim, DE
• Christoph Benisch · Mannheim, DE

Key dates

• Filing date: Dec 14, 2004
• Grant date: Jan 22, 2008
• Expiry date: Dec 14, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2603/68
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for preparing tricyclodecanedialdehyde by hydroformylation of dicyclopentadiene by means of a CO/H2 mixture at elevated temperature and under superatmospheric pressure in the presence of a rhodium catalyst which has not been modified by means of a ligand and is homogeneously dissolved in the hydroformylation medium, wherein the hydroformylation is carried out at a pressure of from 200 to 350 bar in at least two reaction zones, with a reaction temperature of from 80 to 120° C. being set in a first reaction zone and a reaction temperature of from 120 to 150° C. being set in a reaction zone following this reaction zone, with the proviso that the reaction temperature in the subsequent reaction zone is at least 5° C. higher than in the preceding reaction zone.