| 摘要 |
A process to prepare a polyester polymer composition comprising a polyester polymer having furanic units is disclosed. The process comprises the step of reacting a cyclic polyester oligomer in the presence of a catalyst in a ring-opening polymerization step under conditions of a reaction temperature and reaction time sufficient to yield a polyester polymer having furanic units. The invention further relates to a polyester polymer composition obtainable by said process, wherein the polyester polymer composition comprises a polyester polymer having furanic units and a cyclic polyester oligomer comprising either structure Y1 or Y2, preferably in a concentration of less than 5 wt %, more preferably less than 1, more preferably less than 0.5 in the composition. The present invention further relates also to the use of said polyester polymer composition in extrusion, injection molding, or blow molding. |
