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:
Oct. 11, 1983
Filed:
Jan. 18, 1982
Applicant:
Inventors:
Haruhiko Miyazaki, Ube, JP;
Koichi Hirai, Ube, JP;
Taizo Uda, Ube, JP;
Yasuo Nakamura, Ube, JP;
Harumi Ikezawa, Onoda, JP;
Takanori Tsuchie, Ube, JP;
Assignee:
UBE Industries, Ltd., Yanaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560179 ; 562579 ;
Abstract
In a process for producing a glycollic acid ester by the vapor phase catalytic hydrogenation of an oxalic acid diester in the presence of a catalyst and hydrogen gas, the improvement wherein the oxalic acid diester in the vaporous state is contacted with hydrogen gas in the presence of a catalyst composed of Ag or Pd supported on a solid carrier at a temperature of from about 120.degree. C. to about 300.degree. C.