Among all of the company’s R&D projects in the field of bio-based materials, special attention is given to bio-based epoxy building blocks that can be used as a substitute diglycidylether of bisphenol A (DGEBA) in epoxy-based thermoset materials.
Bio-based building block alternatives are synthesized and tailor-made according to the requirements of involved processes (RTM, pultrusion, impregnation, etc.), and take into account the end-users’ specifications in relation to applications as different as automotive, building industry or aeronautics.
In these areas, a representative study was dedicated to the synthesis of diglycidylether of vanillyl alcohol (DGEVA) made from vanillyl alcohol that can be extracted from lignin, and to phloroglucinol triglycidylether (PHTE) that can be extracted from algae or prepared from new biotechnologies. Both epoxy resins are aromatic multifunctional glycidyl ethers that can be combined to reach various thermomechanical properties.
Both epoxy resins were evaluated and used in the preparation of epoxy-amine materials. Resins formulated on the basis of DGEVA and PHTE can reach Tg at between 90°C and 180°C while exhibiting viscosity consistent with the studied process.