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:
Feb. 22, 2011
Filed:
Jun. 10, 2009
Applicants:
Jing Liu, Changchun, CN;
Hongbin Qi, Changchun, CN;
Zhouwen Xu, Changchun, CN;
Inventors:
Assignee:
Global Bio-Chem Technology Group Company Limited, Hong Kong, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/80 (2006.01); C07C 27/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for separation of diols from a mixture comprising diols and polyols, for example, from a reaction mixture obtained from hydrogenolysis of sorbitol. In particular, the present invention relates to separation of diols from the mixture using a combination of a wiped-film evaporator and a molecular evaporator to obtain diols in a high yield.