Eastman Chemical Company

Thomas Shanks

Kenny Randolph Parker

Lee R Partin

Mesfin Ejerssa Janka

Ashfaq Shahanawaz Shaikh

David Lange

Jason Christopher Jenkins

Bradford Russell Bowers

Michael Charles Morrow

Paula Moody

Charles Edwan Sumner, Jr

Robert Joseph Maleski

Charles Sumner

Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.

Oxidation process to produce a crude and/or purified carboxylic acid product

The present invention recites a process for the of 2,5-dimethoxy-benzaldehyde by reacting a 2-hydroxy-5 methoxy-benzaldehyde with a suitable metal hydroxide in the presence of a suitable solvent to make a metal salt of 2-hydroxy-5-methoxy benzaldehyde comprising. The invention further provides a method for alkylating said metal salts with dimethylsulfate in the presence of a suitable solvent so as to provide a 2,5-dimethoxy benzaldehyde.

Process for preparing 2,5-dimethoxy benzaldehyde

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Piney Flats, TN, United States of America

Thomas Shanks