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. 06, 1985
Filed:
Mar. 17, 1983
Applicant:
Inventors:
Yves Chauvin, Le Pecq, FR;
Dominique Commereuc, Meudon, FR;
Andre Hirschauer, Montesson, FR;
Dominique Reffet, Rueil-Malmaison, FR;
Robert Stern, Paris, FR;
Assignees:
Institut Francais du Petrole, Rueil-Malmaison, FR;
Societe Nationale Elf-Aquitaine (Production), Paris La Defense, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09F / ; C09F / ; C11C / ;
U.S. Cl.
CPC ...
260404 ; 2604045 ; 560153 ; 560171 ; 562423 ; 562518 ; 562571 ; 556134 ;
Abstract
N-acyliminodiacetic acids are manufactured by reacting formaldehyde or a formaldehyde generator compound with a N-unsubstituted amide or a generator thereof and with carbon monoxide in contact with a carbonylation catalyst, for example, a cobalt compound, the ratio of the aldehyde groups to the amide groups being at least 2:1. The formaldehyde generator can be a polymeric form of formaldehyde and the amide generator can be a carboxylic ester, acid or anhydride.