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:
Sep. 09, 2003
Filed:
Nov. 29, 2001
Applicant:
Inventors:
Byeong No Lee, Seoul, KR;
Eun Joo Jang, Daejun-Shi, KR;
Jung Ho Lee, Daejun-Shi, KR;
Hyung Rok Kim, Daejun-Shi, KR;
Yo Han Han, Daejun-Shi, KR;
Hyun Kwan Shin, Daejun-Shi, KR;
Ho Sun Lee, Chungnam-do, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 2/700 ; C07C 2/704 ; C07C 3/118 ; C07C 2/900 ;
U.S. Cl.
CPC ...
C07C 2/700 ; C07C 2/704 ; C07C 3/118 ; C07C 2/900 ;
Abstract
A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.