Use of latent metathesis polymerization systems for photopolymerization-based additive manufacturing

Patent Number: 11,820,839
Issued: 11/21/2023
Official Filing: View the Complete Patent
Abstract: Photolatent olefin metathesis catalysts can be used in combination with metathesis-active monomers or resins for photopolymerization-based additive manufacturing via ring-opening metathesis polymerization (ROMP). A variety of alternative catalysts and photosensitizers are commercially available that allows for tuning of thermomechanical properties, potlifes, activation rates, and irradiation wavelengths. As an example, two optimized catalyst/photosensitizer systems were demonstrated in the rapid stereolithographic printing of complex, multidimensional poly-dicyclopentadiene structures with microscale features under ambient conditions.
Filed: 6/2/2022
Related Opportunity: Selective Dual Wavelength Olefin Metathesis 3D Printing (SWOMP)

Government Interests: STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.