Abstract
Efficient synthesis of polyester polyols with tunable molecular weight and microstructures from cyclic anhydride/epoxide mixtures by taking advantage of chain transfer reaction remains a great challenge. Dou et al. demonstrated that potassium acetate and 18‐crown‐6 combinations have great potential in synthesis of diverse polyester polyols with controllable molecular weight and high‐end group fidelity. Polyester polyols could be efficiently prepared in laboratory by using commercially available cyclic anhydride without further purification with an extremely low catalyst loading. This binary catalyst can also promote the self‐switchable copolymerization of cyclic anhydride/epoxide/cyclic ester mixtures. More details are discussed in the article by Wang et al. on page 83—92.image
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