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:
Jan. 02, 2007
Filed:
Jun. 10, 2005
Applicants:
Fumisato Goto, Ibaraki, JP;
Hirotada Kakiya, Ibaraki, JP;
Inventors:
Fumisato Goto, Ibaraki, JP;
Hirotada Kakiya, Ibaraki, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 57/18 (2006.01); C07C 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is disclosed a method of producing α,β-unsaturated carboxylic acid of formula (3) wherein Rdenotes a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, an alkenyl group or an alkynyl group,which method comprises reacting a carboxylic acid of formula (1) wherein Rdenotes the same as the above, or carboxylic anhydride of formula (2) wherein Rdenotes the same as the above, with a methylenating agent in a presence of a catalyst containing metal of Group 13 of the Periodic Table of Elements in the amount of not more than 5 weight %.