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:
Feb. 17, 1976
Filed:
Nov. 17, 1972
Applicant:
Inventors:
Tokuzo Kurata, Kitakyushu, JA;
Takeshi Okano, Kitakyushu, JA;
Kunihiko Ohfuchi, Kitakyushu, JA;
Akio Tamaru, Yokohama, JA;
Yoshifumi Murata, Kitakyushu, JA;
Saburo Nagashima, Kawasaki, JA;
Assignee:
Mitsubishi Chemical Industries Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07c / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
A copper catalyst obtained by reducing a copper compound with formaldehyde in the presence of an alkali in an aqueous medium is an excellent catalyst for the hydrolysis of an unsaturated nitrile to an amide. Furthermore, when a copper compound is combined with another element, which is selected from a specific group of elements, during the preparation of the copper catalyst, a catalyst is formed which has an increased hydrolysis activity and an increased catalyst lifetime.