The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2008
Filed:
Feb. 08, 2007
Carolyn E. Schmit, Naperville, IL (US);
David L. Sikkenga, Wheaton, IL (US);
Christopher G. Meller, Carol Stream, IL (US);
Carolyn E. Schmit, Naperville, IL (US);
David L. Sikkenga, Wheaton, IL (US);
Christopher G. Meller, Carol Stream, IL (US);
BP Corporation North America Inc., Warrenville, IL (US);
Abstract
A process is disclosed for producing at least one high purity aromatic carboxylic acid by oxidizing an aromatic feedstock with oxygen in a reaction medium comprising the aromatic feedstock, a promoter, a heavy metal catalyst, and a solvent which comprises benzoic acid and water to produce a reactor effluent wherein substantially all of the aromatic carboxylic acid produced remains in solution; and then hydrogenating the reactor effluent in the presence of a catalyst and hydrogen. This process efficiently and effectively produces high purity aromatic carboxylic acids by utilizing a common solvent for both oxidation and purification and eliminating the need for intermediate process steps and equipment.