Exxon Mobil has patented a process for creating a renewable, high-performance polyester from a 5,5′-Di-(protected)-2,2′-bifuran derived from furfural. The process involves coupling protected 2-furaldehyde to form the bifuran, which can then be deprotected, functionalized, and polymerized to produce the polyester. GlobalData’s report on Exxon Mobil gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Exxon Mobil, Microscale biofuel reactors was a key innovation area identified from patents. Exxon Mobil's grant share as of February 2024 was 68%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11926605B2) discloses a furan coupling process involving the coupling of a protected 2-furaldehyde to form a 5,5'-di-(protected)-2,2'-bifuran. The process includes various steps such as oxidative addition, metalation, and reductive elimination, with the option of using an oxidant and/or a catalyst. Additionally, the coupling process may involve palladation for efficient synthesis.
Furthermore, the patent outlines the protection of 2-furaldehyde by reacting it with an alkylene diol to form a 2-furfural alkylene diol acetal. The protected 2-furaldehyde is then deprotected to obtain (2,2'-bifuran)-5,5'-dicarbaldehyde. Subsequent steps involve polymerization of the 5,5'-di(protected)-2,2'-bifuran to form a polyester comprising (2,2'-bifuran)-5,5'-dicarboxylate structural units. The process also includes the formation of intermediate compounds and the conversion of (2,2'-bifuran)-5,5'-dicarbaldehyde to (2,2'-bifuran)-5,5'-dicarboxylic acid or dialkyl (2,2'-bifuran)-5,5'-dicarboxylate, among other steps. Overall, the patent details a comprehensive method for the synthesis of bifuran-based polyesters with specific structural units, highlighting the potential for innovative applications in the field of materials science.
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