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. 10, 2009
Filed:
Sep. 01, 2005
Young-hoon Park, Seongnam, KR;
Kwang-myung Cho, Incheon, KR;
Seong-uk Kang, Yongin, KR;
Jin-hyun Kim, Daejeon, KR;
Mi-hae Cho, Chungcheongnam-do, KR;
Young-Hoon Park, Seongnam, KR;
Kwang-Myung Cho, Incheon, KR;
Seong-Uk Kang, Yongin, KR;
Jin-Hyun Kim, Daejeon, KR;
Mi-Hae Cho, Chungcheongnam-do, KR;
CJ Corporation, Seoul, KR;
Abstract
A method of isolating 1,3-propanediol from a solution containing 1,3-propanediol, 1,2-propanediol, glycerol, and glucose is provided. The method includes: obtaining a concentrate by concentrating the solution via reduced pressure evaporation; dissolving the concentrate in a solvent selected from the group consisting of ethyl acetate, methyl ethyl ketone, and a mixture thereof and leaving the solution alone to fractionate the compounds in a solvent layer and a water layer; and loading the solvent layer in a silica-filled column under a low pressure liquid chromatography condition and eluting the solvent layer with a mixed solvent of methanol and at least one solvent which is miscible with methanol and has a polarity lower than methanol.