Pyridine dicarboxylic acid derived polyesters: Prospects for developing safe, circular and sustainable materials

The use of aromatic chemicals as key ingredients in (bulk) applications such as coatings, paints, and packaging materials is inevitable. The high dependency on the aromatics is due to their rigid characteristics that offer enhanced properties resulting in superior application performance. The development of biobased aromatic chemicals (drop-in's) or renewable rigid alternatives is necessary for the transition towards sustainable products and to alleviate society's reliance on fossil feedstock primarily being used to produce such aromatic chemicals. This mini-review highlights the potential of renewable rigid pyridine dicarboxylic acid building blocks in producing polyesters with intriguing properties for various applications.