Unlocking Random Poly(ether-ester-carbonate) Polyols with Ultralow Molecular Weight

The development of high-performance polyurethanes (PUs) is intrinsically connected to the molecular structure of polyol precursors. However, single-structure polyols, such as polyester polyols and polyether polyols, exhibit limited potential for broadly regulating PU properties. Herein, we engineered random poly(ether-ester-carbonate) polyols with tailored compositions via telomerization of anhydride/epoxide/CO2 enabled by a robust supported aluminum porphyrin catalyst. Ultralow molecular weight polyols (0.8 kg/mol) with narrow dispersity (Đ = 1.08) were easily obtained due to the catalyst’s extraordinary proton tolerance. Additionally, our supported catalyst produced near-white products while maintaining recyclability for at least three cycles. Our work provides a versatile platform for designing next-generation PU precursors.