Polymerization of macrocyclic polyester oligomers at...

Details Polymerization of macrocyclic polyester oligomers at... Polymerization of macrocyclic polyester oligomers at...

C - Chemistry, Metallurgy

08

G

C08G 63/78 (2006.01) C08G 63/84 (2006.01)

Patent

CA 2585410

Compounds containing a lanthanide rare earth element or yttrium are effective catalysts for the polymerization of macrocyclic polyester oligomers. The catalysts are stable at elevated temperatures, and the polymerization is rapid, resulting in high monomer conversion, high molecular weight, and a mechanically sound material.

Des composés contenant un lanthanide ou de l~yttrium sont des catalyseurs efficaces pour la polymérisation d'oligomères macrocycliques de type polyester. Lesdits catalyseurs sont stables à température élevée, et la polymérisation est rapide, ce qui permet d~obtenir une conversion de monomère élevée, une masse moléculaire élevée, et un matériau conforme aux attentes du point de vue des propriétés mécaniques.

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