Oxidation process to produce a purified carboxylic acid product via solvent displacement and post oxidation

US9029580B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Mesfin Ejerssa Janka · Kingsport, US
• Kenny Randolph Parker · Afton, US
• Paula Moody · Johnson City, US
• Ashfaq Shahanawaz Shaikh · Kingsport, US
• Lee Reynolds Partin · Kingsport, US
• Bradford Russell Bowers · Chuckey, US
• Michael Charles Morrow · Kingsport, US

Key dates

• Filing date: Feb 4, 2013
• Grant date: May 12, 2015
• Expiry date: Feb 4, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural were R alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R′OCH2-furfural, where R′=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R″-furfural, where R″=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA.