Polyurethanes are widely used, versatile materials having properties which can be tuned to match the application
requirements. As a result, polyurethanes are found in applications such as foams, adhesives, coatings, and elastomers.
However, the production of polyurethanes has remained a major concern as it involves the synthesis and use of toxic diisocyanates
[1]. Several chemical routes have been developed throughout the years to avoid these issues, yet none of these
pathways is currently used for the large scale production of non-isocyanate polyurethanes (NIPU) [2–8]. Still, the addition
reaction between cyclic carbonates and amines to form poly(hydroxy urethane)s (PHU) has recently been highlighted in
an increasing number of publications [9–14]