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. 12, 2001
Filed:
Nov. 30, 1999
Kouhei Morikawa, Kawasaki, JP;
Shuuji Hirayama, Kawasaki, JP;
Yoshimasa Ishimura, Kawasaki, JP;
Yuseki Suyama, Kawasaki, JP;
Tsutomu Nozawa, Kawasaki, JP;
Hiroyuki Monzen, Kawasaki, JP;
Motoo Miura, Kawasaki, JP;
Kuniomi Marumo, Kawasaki, JP;
Taketoshi Naito, Kawasaki, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
Noble metal, particularly ruthenium, Raney catalysts which can hydrogenate (1) aromaticity-exhibiting ring portions of organic compounds, (2) carboxylic acids and their ester portions (carbonyl ester groups), (3) ring portions and carboxylic acid or their ester groups in compounds having such ring portions and carboxylic acid or their ester portions, and (4) ring portions and nitrile groups of aromatic nitrile compounds and methods for the preparation of corresponding hydrogenated compounds. The methods allow preparation of hydrogenated compounds having hydrogenated aromatic ring portions, hydrogenated carbonyl ester groups, hydrogenated aromatic ring and carbonyl ester groups, or hydrogenated aromatic rings and nitrile groups under milder hydrogen pressure and temperature conditions than the conventional catalysts.