The production process of the solid-phase polymerized poly (tetramethylene-2,5-furan dicarboxylate) polymer and the resulting polymer

摘要

A solid-phase polymerized poly (tetramethylene-2,5-furan dicarboxylate) polymer is produced by a process comprising: Having a number average molecular weight (Mn) of at least 10,000 as measured by Gel Permeation Chromatography (GPC) using polystyrene as the standard, and having a number of carboxylic acid end groups Providing a poly (tetramethylene-2,5-furan dicarboxylate) polycondensate having a maximum of 50 meq / kg; And Maintaining the poly (tetramethylene-2,5-furan dicarboxylate) polycondensate within a temperature range of 80 to 140 ^° C to obtain a semi-crystalline polycondensate; And - solid-phase polycondensation of the semi-crystalline polycondensate while maintaining the semi-crystalline polycondensate at a temperature of at least 140 ^° C and below its melting point while the semi-crystalline polycondensate is placed under an inert gas flow or under vacuum To obtain a condensed poly (tetramethylene-2,5-furan dicarboxylate) polymer on a solid-phase.