The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2018
Filed:
Oct. 21, 2014
Furanix Technologies B.v., Amsterdam, NL;
Ate Duursma, Amsterdam, NL;
Rene Aberson, Amsterdam, NL;
Dee Dee Smith, Dacula, GA (US);
Joel Flores, Alpharetta, GA (US);
Matheus Adrianus Dam, Amsterdam, NL;
Gerardus Johannes Maria Gruter, Amsterdam, NL;
Synvina C.V., Amsterdam, NL;
Abstract
A furan-based polyamide is prepared by the following steps: (1) preparing a furan-based oligomer of formula (1) HN—R—(NH—CO—F—CO—NH—R)—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° 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.