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:
Dec. 06, 2016
Filed:
Aug. 31, 2012
Valentin Poirier, Rennes, FR;
Jean-françois Carpentier, Acigné, FR;
Martine Slawinski, Nivelles, BE;
Yann Sarazin, Rennes, FR;
Marion Helou, Brussels, BE;
Valentin Poirier, Rennes, FR;
Jean-François Carpentier, Acigné, FR;
Martine Slawinski, Nivelles, BE;
Yann Sarazin, Rennes, FR;
Marion Helou, Brussels, BE;
TOTAL RESEARCH & TECHNOLOGY FELUY, Seneffe (Feluy), BE;
Abstract
A method can include immortal ring-opening homopolymerisation of cyclic carbonates or cyclic esters in the presence of a catalytic system, or sequential two-step ring-opening block copolymerisation of one or more cyclic monomers selected from cyclic carbonates or cyclic esters in the presence of the catalytic system. The catalytic system can include a phenolate supported metallic complex. The catalytic system can also include an alcohol or a primary amine containing aliphatic and/or aromatic moieties. The alcohol or primary amine can be present in a molar ratio with respect to the metallic complex that is larger than 1.