Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2005-03-08
2009-06-23
Oh, Taylor Victor (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S480000
Reexamination Certificate
active
07550627
ABSTRACT:
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° C. to about 155° 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.
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Bays Joseph Nathaniel
Compton Daniel Burts
Davenport Bryan Wayne
Floyd Thomas Richard
Hembre Robert Thomas
Carmen Dennis V.
Eastman Chemical Company
Graves, Jr. Bernard J.
Oh Taylor Victor
Owen Steven A.
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