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:
Jul. 06, 1999
Filed:
Nov. 21, 1997
Applicant:
Inventor:
Emmanuel Arretz, Pau, FR;
Assignee:
Elf Acquitaine Exploration Production France, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560152 ;
Abstract
This process for the synthesis of 3-mercaptopropionic acid esters by addition reaction of H.sub.2 S to the corresponding acrylic acid ester is carried out in the presence of a solid-support functionalized with basic guanidine functional groups, on condition that these groups are free of hydrogen that is directly attached to a nitrogen atom.