Copolymerizations of ethylene with polar monomers such as 5-hexene-1-yl acetate and allyl acetate are explored using nickel complexes bearing a class of anilinonaphthoquinone ligands. High tolerability of this complex toward polar comonomer is achieved by the installation of sterically bulky substituent on the aniline ligand. Moreover, the heterogenization of the nickel complexes using silica-supported modified methylaluminoxane enhances the copolymerization performances. The catalyst is highly active and thermally stabile to give semicrystalline ester-functionalized high molecular weight polyethylenes.

中文翻译：

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含苯并萘并萘醌配体的高度耐用的镍催化剂，用于乙烯和极性单体的共聚

使用带有一类苯胺基萘甲醌配体的镍配合物，探索了乙烯与极性单体（如5-己烯-1-基乙酸酯和乙酸烯丙酯）的共聚合。该配合物对极性共聚单体的高耐受性是通过在苯胺配体上安装空间庞大的取代基来实现的。此外，使用二氧化硅负载的改性甲基铝氧烷进行镍配合物的异质化可提高共聚性能。该催化剂是高活性的并且是热稳定的，以得到半结晶的酯官能化的高分子量聚乙烯。