Highly Robust Palladium(II) α-Diimine Catalysts for Slow-Chain-Walking Polymerization of Ethylene and Copolymerization with Methyl Acrylate.
作者： Shengyu Dai , Xuelin Sui , Changle Chen
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摘要: A series of sterically demanding α-diimine ligands bearing electron-donating and electron-withdrawing substituents were synthesized by an improved synthetic procedure in high yield. Subsequently, the corresponding Pd complexes prepared isolated column chromatography. These demonstrated unique properties ethylene polymerization, including thermal stability activity, thus generating polyethylene with a molecular weight very low branching density. Similar observed for ethylene/methyl acrylate copolymerization. Because density, generated copolymer semicrystalline solids. The (co)polymers had microstructures originating from slow-chain-walking activity these complexes.
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