Lysine triisocyanate

l-lysine-based diisocyanates have frequently been used for biomedical PUs in the last several years as drug delivery systems, hydrogels, implant materials, etc.. In some very inspiring recent research, the L-lysine based ethyl ester l-lysine diisocyanate was compared to petrol-based hexamethylene diisocyanate, and isophorone diisocyanate in terms of reactivity and final properties of the PU and even fully renewable thermoplastic poly(ester urethane urea)s were produced [42]. More studies on enzymatic breakdown/biodegradability of (biobased) PUs are conducted in recent years proving the importance of environmentally friendly PU applications.

Konieczny, J., & Loos, K. (2019). Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins. Polymers, 11(2), 256. doi:10.3390/polym11020256