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. 03, 2001
Filed:
May. 22, 1997
Applicant:
Inventors:
Sandra Grimaldi, Aix-en-Provence, FR;
François Lemoigne, Marseille, FR;
Jean-Pierre Finet, Raphele les Arles, FR;
Paul Tordo, Marseille, FR;
Pascal Nicol, Pau, FR;
Muriel Plechot, Orthez, FR;
Yves Gnanou, Talence, FR;
Assignee:
Atofina, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/514 ; C08G 7/902 ;
U.S. Cl.
CPC ...
C08G 7/514 ; C08G 7/902 ;
Abstract
The invention relates to a process for the polymerization or copolymerization of at least one monomer which is polymerizable by the radical route in the presence of a stable free radical from the nitroxide family. The stable free radical is &bgr;-substituted and provides excellent control of polydispersity while ensuring a better rate of polymerization or copolymerization, if they are compared with the stable free radicals used in the prior art.