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:
Dec. 18, 2012
Filed:
Nov. 09, 2007
Applicants:
Kosuke Oishi, Yokohama, JP;
Eiji Sato, Yokohama, JP;
Hiroyuki Mori, Yokohama, JP;
Akira Yoshioka, Yokohama, JP;
Inventors:
Kosuke Oishi, Yokohama, JP;
Eiji Sato, Yokohama, JP;
Hiroyuki Mori, Yokohama, JP;
Akira Yoshioka, Yokohama, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the present invention, by using 4-halogeno-3-hydroxybutanamide as a substrate in quaternary amination reaction with trialkylamine which is an important step in betaine (such as carnitine) preparation processes, it becomes possible to reduce the production of crotonic acid derivatives (the major by-product) greatly compared to conventional processes. Consequently, it becomes possible to prepare a betaine, such as carnitine, at a high yield.