Transition metal complexes of selected monoanionic phosphine ligands, which also contain a selected Group 15 or 16 (IUPAC) element and which are coordinated to a Group 3 to 11 (IUPAC) transition metal or a lanthanide metal, are polymerization catalysts for the (co)polymerization of olefins such as ethylene and α-olefins, and the copolymerization of such olefins with polar group-containing olefins. These and other nickel complexes of neutral and monoanionic bidentate ligands copolymerize ethylene and polar comonomers, especially acrylates, at relatively high ethylene pressures and surprisingly high temperatures, and give good incorporation of the polar comonomers and good polymer productivity. These copolymers are often unique structures, which are described.
选择性单阴离子
膦配体的过渡
金属配合物,其中还包含选择的第15或第16族(IU
PAC)元素,并与第3到11组(IU
PAC)的过渡
金属或
镧系
金属配位,是聚合
催化剂,可用于(共)聚合
乙烯和α-
烯烃,以及这些
烯烃与含极性基团的
烯烃的共聚合。这些以及其他中性和单阴离子双齿
配体的
镍配合物可以在相对较高的
乙烯压力和惊人的高温下共聚合
乙烯和极性共聚单体,尤其是
丙烯酸酯,并且具有良好的极性共聚单体的并入和良好的聚合产率。这些共聚物通常具有独特的结构,并已进行描述。