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:
May. 15, 2012
Filed:
Sep. 22, 2008
Ahmad K. Hilaly, Forsyth, IL (US);
Robert Duane Sandage, Decatur, IL (US);
John G. Soper, Mt. Zion, IL (US);
Ahmad K. Hilaly, Forsyth, IL (US);
Robert Duane Sandage, Decatur, IL (US);
John G. Soper, Mt. Zion, IL (US);
Archer Daniels Midland Company, Decatur, IL (US);
Abstract
The present invention provides methods of separating at butanediol compound from a mixture containing polyhydric alcohols and butanediol compounds. The mixture of polyhydric alcohols typically contains propylene glycol and ethylene glycol in addition to the butanediol contaminants. Butanediol contaminants are removed by contacting the mixture with a chromatographic matrix. Either the butanediol compounds or the non-butanediol compounds adsorb to the chromatographic matrix. If desired, the adsorbed compounds may be eluted from the matrix, purified and used in products.