Process for the preparation of a polyester

    公开(公告)号:US10590235B2

    公开(公告)日:2020-03-17

    申请号:US15759243

    申请日:2016-09-14

    Applicant: Synvina C.V.

    Inventor: Laszlo Sipos

    Abstract: A polyester including ethylene 2,5-furandicarboxylate units is prepared in a process, where in an esterification step a 2,5-furandicarboxylate compound is reacted with ethylene glycol to form an ester composition, including components with 2-hydroxyethyl and 2,5-furandicarboxylate moieties; where in a polycondensation step the ester composition thus obtained is subjected to polycondensation at reduced pressure in the presence of a polycondensation catalyst to obtain a polycondensate; and where during the polycondensation step 2,5-furandicarboxylic acid is added to the ester composition.

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