process for the production of a solid polymerized poly (tetramethylene-2,5-furandicarboxylate) polymer and poly (tetramethylene-2,5-furandicarboxylate) polymer.

摘要

A solid state polymerized poly (tetramethylene-2,5-furandicarboxylate) polymer is produced in a process comprising: providing a poly (tetramethylene-2,5-furandicarboxylate) polycondensate having an average molecular weight (mn) of at least 10,000 as determined by gel permeation chromatography (gpc) using polystyrene as standard and with a carboxylic acid terminal group content of at most 50 meq / kg; and maintaining the poly (tetramethylene-2,5-furandicarboxylate) polycondensate at a temperature in the range of 80 to 140 ° C to obtain a semicrystalline polycondensate; and subjecting the semicrystalline polycondensate to solid state polymerization by maintaining the semicrystalline polycondensate at a temperature of at least 140 ° C and below its melting point, while the semicrystalline polycondensate is under both an inert gas and vacuum flow to obtain the poly polymer. solid polymerized (tetramethylene-2,5-furandicarboxylate).