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:
Aug. 16, 1977
Filed:
Jun. 04, 1976
Applicant:
Inventor:
Bernard John Kershaw, Kingston, CA;
Assignee:
Du Pont of Canada, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2604654 ; 2605 / ; 2605 / ;
Abstract
Process for the manufacture of hexamethylene diamine comprising the steps of contacting 2-cyanocyclopentanone alone or in mixture with adiponitrile with a mixture comprising ammonia and hydrogen in the presence of a catalyst prepared by reducing iron oxide with hydrogen. The process is conveniently conducted at a temperature in the range 100.degree. to 275.degree. C and at a pressure in the range of 300 to 600 kg/cm.sup.2. The mole ratio of ammonia to 2-cyanocyclopentanone is maintained at least 4:1 and the pressure of hydrogen is sufficient to essentially prevent conversion of the activated catalyst to iron oxide.