Synvina C.v.

Dee Dee Smith

Gerardus Johannes Maria Gruter

Matheus Adrianus Dam

Joel Flores

Ate Duursma

Rene Aberson

A furan-based polyamide is prepared by the following steps: (1) preparing a furan-based oligomer of formula (1) HN&#x2014;R&#x2014;(NH&#x2014;CO&#x2014;F&#x2014;CO&#x2014;NH&#x2014;R)&#x2014;NH(1) where R is a hydrocarbon moiety and F is a furan (cyclo-CHO) moiety and n represents the average degree of oligomerization, and where n is within the range of 1 to 10 by reacting 2,5-furandicarboxylic acid or its derivative with a diamine at a temperature of at most 100&#xb0; C.; (2) contacting the oligomer of step (1) with a bifunctional linker selected from an acid or a derivative thereof where the acid is furandicarboxylic acid or a non-aromatic dicarboxylic acid; provided that if the hydrocarbon moiety R is aromatic, then the bifunctional linker is an aromatic dicarboxylic acid or a derivative thereof, at a mole ratio of the oligomer to the difunctional linker within the range of 0.8 to 1.5 at polycondensation conditions, and (3) isolating the resulting polyamide.

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Dacula, GA, United States of America

Dee Dee Smith