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:
Jun. 02, 1998
Filed:
Mar. 05, 1996
Applicant:
Inventors:
Assignee:
Matsumoto Yushi Seiyaku Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07F / ;
U.S. Cl.
CPC ...
556 51 ; 556 52 ; 560-1 ; 560-8 ; 560 99 ;
Abstract
The present invention provides a process for preparation of an ester comprising reacting a carboxylic acid and an alcohol in the presence of an esterific catalyst comprising at least one compound selected from the group consisting of halides, nitrates, carboxylates, alcoholates and acetylacetone complexes of metals of the titanium group. According to the present process, substantially equal equivalent of the alcohol and the acid can be reacted completely. In addition, the present invention further provides a purification process to eliminate the catalyst from homogeneous reaction system completely.