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:
May. 11, 1976
Filed:
Mar. 13, 1975
Applicant:
Inventors:
Albert Edward Kaye, Manchester, EN;
Alan Cyril Tucker, Manchester, EN;
Ronald James Hurlock, Manchester, EN;
Assignee:
Imperial Chemical Industries Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604654 ; 260464 ;
Abstract
A process for the manufacture of 2-cyano-propionate esters which comprises hydrogenating in the presence of an hydrogenating catalyst a mixture of a cyano-acetic ester, formaldehyde and a condensation catalyst. Typically ethyl cyano-acetate is treated with formalin or paraform and hydrogen in the presence of palladium on carbon and zinc acetate. Preferably an antioxidant or polymerisation inhibitor is also included in the reaction mixture which also usually includes solvents such as glacial acetic acid or toluene.