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:
Apr. 15, 2003
Filed:
Jun. 26, 2001
Shubham P. Chopade, Florence, SC (US);
Atulkumar D. Dhale, East Lansing, MI (US);
Christopher W. Kiesling, Wyandotte, MI (US);
Angela M. Clark, Greenwood, IN (US);
James E. Jackson, Haslett, MI (US);
Dennis J. Miller, Okemos, MI (US);
Board of Trustees of Michigan State University, East Lansing, MI (US);
Abstract
A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column ( ) of a cyclic acetal from an aqueous solution which acetal is formed in a reaction mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.