Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

Daniel Burts Compton

Charles Edwan Sumner, Jr

Robert Thomas Hembre

Brent Alan Tennant

David Lange

Gino Georges Lavoie

Shaowo Liang

Timothy W Price

David Carl Attride

Timothy Richard Nolen

Joseph Nathaniel Bays

Bryan Wayne Davenport

Thomas Richard Floyd

Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125&#xb0; C. to about 155&#xb0; C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the weight ratio of cobalt to manganese in the reaction mixture is from about 10 to about 400. The processes provide improved conversion, while reducing the formation of carbon oxides and other by-products.

Processes for producing aromatic dicarboxylic acids

Disclosed is a process for the preparation of cyclopropanecarboxaldehyde by the thermal isomerization of 2,3-dihydrofuran under superatmospheric pressure, e.g., at a temperature of about 300.degree. to 600.degree. C. and a pressure of about 3 to 345 bars absolute.

Process for the production of cyclopropanecarboxaldehyde

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Kingsport, TN, United States of America

Daniel Burts Compton