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:
Apr. 13, 1976
Filed:
Jul. 12, 1971
Applicant:
Inventors:
Yasuo Taneda, Hino, JA;
Tadakazu Tsutada, Hino, JA;
Assignee:
Teijin Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603439 ;
Abstract
A process for purifying beta-lactones, which comprises contacting a beta-lactone selected from the group consisting of alpha, alpha-dimethyl-beta-propiolactone, beta-propiolactone and a mixture of these with a solid alkaline earth metal hydroxide.