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:
Mar. 05, 1985
Filed:
Dec. 01, 1981
Applicant:
Inventors:
Tadayuki Mitani, Arai, JP;
Mamoru Endo, Arai, JP;
Assignee:
Daicel Chemical Industries, Ltd., Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562531 ; 562577 ;
Abstract
A process for the preparation of glyoxylic acid is disclosed which comprises reacting an aqueous solution of glyoxal with chlorine. The reaction is preferably carried out under pressure, under the condition that the hydrochloric acid concentration in the aqueous solution of glyoxal is 1 to 15%. The reaction can be carried out in the presence of a catalytically effective amount of bromine as a catalyst.