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:
Jan. 06, 1976
Filed:
Dec. 05, 1973
Applicant:
Inventors:
Johan W Garritsen, Sittard, NL;
Josef M Penders, Maastricht, NL;
Assignee:
Stamicarbon B.V., Geleen, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ; 2602 / ; 260404 ; 260464 ; 2604654 ; 2604 / ;
Abstract
An omega-amino-beta-alkoxycarboxylic acid ester is prepared by subjecting to hydrogenation in the liquid phase an omega-cyano-beta-alkoxycarboxylic acid ester. The hydrogenation may be carried out at a temperature of 70.degree. to 150.degree.C. The amino-esters obtained can be cyclized through heating into beta-alkoxy-omega-lactams which may be applied for preparation of polyamides and copolyamides.