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:
Oct. 08, 2024
Filed:
Oct. 07, 2019
Board of Trustees of Michigan State University, East Lansing, MI (US);
Dennis J. Miller, Okemos, MI (US);
Carl T. Lira, East Lansing, MI (US);
Lars Peereboom, Haslett, MI (US);
Scott F. Parker, Fowlerville, MI (US);
Thomas D. Dionise, Lansing, MI (US);
William G. Killian, East Lansing, MI (US);
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY, East Lansing, MI (US);
Abstract
The disclosure relates to methods for separating mixtures of polyols, in particular mixtures of two of more different vicinal diols having close boiling points, thus making them difficult or impossible to separate using conventional distillation techniques. The polyol mixture is reacted with an aldehyde or ketone acetalization agent to form one or more acetals as corresponding acetalization reaction products. The acetalization reaction products are more easily separable either from each other (such as via distillation) or from an unreacted vicinal diol (such as via extraction, settling, or other phase separation). After separation, hydrolysis is performed on the acetalization reaction products to recover the vicinal diols as separate, purified components. The methods provide cost-effective processes for separating different polyols originally formed in admixture.