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:
Jul. 19, 2005
Filed:
Mar. 31, 2003
Edmund J. Mozeleski, Califon, NJ (US);
Richard H. Schlosberg, Bridgewater, NJ (US);
Dennis J. Davoren, Baton Rouge, LA (US);
Carl Robert Beck, Greenwell, LA (US);
Linda J. Broadbelt, Glenview, IL (US);
Ned C. Haubein, Evanston, IL (US);
Edmund J. Mozeleski, Califon, NJ (US);
Richard H. Schlosberg, Bridgewater, NJ (US);
Dennis J. Davoren, Baton Rouge, LA (US);
Carl Robert Beck, Greenwell, LA (US);
Linda J. Broadbelt, Glenview, IL (US);
Ned C. Haubein, Evanston, IL (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method for production of pivalic acid comprising the steps of: (a) reacting isobutylene, carbon monoxide, and a first catalyst to produce a reaction mixture; (b) contacting the reaction mixture with water, thereby producing a crude acid product having pivalic acid and oligomeric neo-carboxylic acid; (c) separating the pivalic acid and the oligomeric neo-carboxylic acid from the crude acid product; (d) reacting the oligomeric neo-carboxylic acid with a source of carbon monoxide at a temperature of less than 200° C. in the presence of a second catalyst to produce a Ccarbocation product, wherein the first and second catalyst are either the same or different; and (e) reacting the Ccarbocation product with water; thereby producing pivalic acid having an overall yield of at least 80 wt. %.