Hard and Flexible, Degradable Thermosets from Renewable Bioresources with the Assistance of Water and Ethanol (RFT-502/521)

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Invention Summary


Thermosets are widely used in industry due to their superior dimensional stability, good processing ability, and high formulation flexibility for tailoring the desired properties such as high modulus, strength, durability, and thermal and chemical resistance. However, they may release VOCs, cannot be reprocessed by heat or solvent, and depend on non-renewable resources. To address these issues, Webster et al. developed degradable bio-based thermosets. These novel thermosets achieve high hardness while maintaining excellent flexibility as well as outstanding adhesion and solvent resistance, which is unprecedented in the field. Further, they degrade rapidly in aqueous base conditions in addition to being thermally degradable.


  • Unprecedented combination of hardness and flexibility
  • Outstanding adhesion and solvent resistance
  • Chemically and thermally degradable
  • Uses naturally occurring acids, such as citric acid
  • Does not require a strong catalyst for curing
  • Applications in coatings, composites, and adhesives


The technology is comprised of a highly functional bio-based epoxy resin, such as epoxidized sucrose soyate, and a carboxylic acid crosslinker, such as citric acid or oligomeric acids, which are cured with water and an alcohol. In addition, it includes the method of making the thermoset as well as a coating composition.


This technology is patent pending in the U.S. and is available for licensing/partnering opportunities.


Saurabhi Satam, Business Development and Licensing Associate


RFT, 502, 521, RFT502, RFT-521

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