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:
Aug. 14, 2012
Filed:
Aug. 31, 2007
Fungau Ho, Charleston, WV (US);
Olan S. Fruchey, Hurricane, WV (US);
Roger L. Roundy, Hurricane, WV (US);
William G. Etzkorn, Hurricane, WV (US);
Christopher T. Reeves, Hurricane, WV (US);
Mahmood Jawaid, Dunbar, WV (US);
Edmund J. Yang, Houston, TX (US);
Dennis W. Jewell, Angleton, TX (US);
Fungau Ho, Charleston, WV (US);
Olan S. Fruchey, Hurricane, WV (US);
Roger L. Roundy, Hurricane, WV (US);
William G. Etzkorn, Hurricane, WV (US);
Christopher T. Reeves, Hurricane, WV (US);
Mahmood Jawaid, Dunbar, WV (US);
Edmund J. Yang, Houston, TX (US);
Dennis W. Jewell, Angleton, TX (US);
Arkema Inc., King of Prussia, PA (US);
Abstract
The process for the distillation of a gas mixture comprising (meth)acrylic acid obtained from the gas-phase oxidation of at least one (meth)acrylic acid precursors is improved through the use of coupled distillation columns. In a first column, the gaseous mixture is dehydrated while in a second column, the dehydrated gaseous mixture is distilled into product, overhead and bottoms streams.