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. 19, 1990
Filed:
Dec. 23, 1988
Applicant:
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548966 ;
Abstract
Alkaline earth metal salts of aziridine-2-carboxylic acid, typically Ca salt, are produced by a reaction of a 2,3-dihalopropionic acid derivative or an .alpha.-haloacrylic acid derivative with an aqueous ammonia in the presence of an alkaline earth metal hydroxide, typically Ca(OH).sub.2. Salts of aziridine-2-carboxylic acid are recovered from such a reaction product as referred to above by a liquid chromatographic technique in which a weak or weakened cation exchanger is utilized.