A series of [OâNS]TiCl3 complexes 5aâl derived from β-carbonylenamine were synthesized and characterized. In the presence of modified methylaluminoxane (MMAO), complexes 1, 5aâi and 5l are highly active for ethylene polymerization and copolymerization of ethylene with 1-hexene, CPE and NBE. Up to 5.12 à 106 g molâ1 hâ1 atmâ1 of activity for the copolymerization of ethylene with 1-hexene is achieved with a 28.9 mol% incorporation ratio.
合成并表征了一系列来自β-羰基胺的[OâNS]TiCl3配合物5aâl。在改性甲基铝氧烯(
MMAO)的存在下,配合物1、5aâi和5l对
乙烯聚合及
乙烯与
1-己烯、
CPE和NBE的共聚合表现出高活性。在
乙烯与
1-己烯的共聚合中,活性达到5.12 × 10^6 g molâ1 hâ1 atmâ1,聚合比例达到28.9 mol%。