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:
Dec. 11, 1979
Filed:
Aug. 30, 1976
Applicant:
Inventors:
John A Fetchin, Stamford, CT (US);
Kin H Tsu, Norwalk, CT (US);
Assignee:
American Cyanamid Company, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2524 / ;
Abstract
Solid catalyst of reduced copper magnesium silicate type is improved for its use in catalytic hydration of acrylonitrile to make acrylamide by calcining the catalyst prior to such use. Calcining strengthens the catalyst particles for longer catalyst life in the reactor and slows the rate of decay of catalytic activity so the average productivity over the life of the catalyst is improved.