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:
May. 07, 2013
Filed:
Feb. 17, 2009
Applicants:
Jean-françois Carpentier, Acigne, FR;
Evgueni Kirillov, Rennes, FR;
Abbas Razavi, Mons, BE;
Inventors:
Assignees:
Total Petrochemicals Research Feluy, Seneffe (Feluy), BE;
Centre National de la Recherche Scientifique (CNRS), Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/08 (2006.01); C08G 63/84 (2006.01); C08F 4/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to the use of group 3 post-metallocene complexes based on sterically encumbered bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands in the ring-opening polymerisation of polar monomers such as, for examples, lactones, lactides, cyclic carbonates.