“…Polyols, which contain two or more hydroxyl groups per molecule, are crucial to the production of polyurethane (PU) products, including flexible and rigid foams, coatings, adhesives, sealants, and elastomers. , Depending on their specific application, they can be classified into polyether, polyester, and polycarbonate (PC) polyols. PC and poly(propylene carbonate) (PPC) polyols are produced through the copolymerization of epoxides and CO 2 using different catalysts such as Co(III) complexes, Cr(III) complexes, or Lewis acids for the former and double metal cyanide (DMC) catalysts for the latter .…”