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:
Aug. 29, 2000
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Yoshinori Hara, Kanagawa, JP;
Haruhiko Kusaka, Kanagawa, JP;
Hironobu Ohno, Kanagawa, JP;
Masami Okuda, Kanagawa, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560201 ;
Abstract
A method for production of unsaturated glycol diester, such as 1,4-diacetoxy-2-butene, is formed of reacting conjugated diene with carboxylic acid and molecular oxygen in the presence of a solid catalyst in the liquid phase under pressure. The catalyst is formed of rhodium and tellurium, which are supported on an inorganic porous carrier. The catalyst is stable, and the unsaturated glycol diester is prepared in high conversion and selectivity.