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:
Mar. 29, 2011
Filed:
Feb. 14, 2006
Applicant:
Philippe Leconte, Meyzieu, FR;
Inventor:
Philippe LeConte, Meyzieu, FR;
Assignee:
Rhodia Chimie, Aubervilliers, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 201/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Lactams, notably ε-caprolactam, are prepared from alkyl cyanovalerates, themselves obtained from unsaturated nitrile compounds, by contacting same, in gaseous state, with hydrogen in the presence of hydrogenation/cyclization catalysts, and then condensing the gas stream thus formed, without intermediate separation of any alkyl aminocaproate, and recovering lactam produced therefrom.