High-molecular-weight Polyethylene Prepared with Early Transition Metal Catalysts  

作　　者：Jian Jun YI Wei ZHAO Zhen Hua JING 

机构地区：[1]Research Institute of Petroleum Processing, Beijing 914-24, Beijing 100083

出　　处：《Chinese Chemical Letters》2005年第10期1386-1388,共3页中国化学快报（英文版）

基　　金：This work was subsidized by Special Funds for Major State Basic Research Projects of China(No.G1999064801).

摘　　要：Early transition metal catalysts [N,N]MCln, in which [N,N] is N-（2,6-diisopropylphenyl） pyridine-2-carboxaldimine （C18H22N2, NN-1）, N-（2,6-diisopropylphenyl）-6-methylpyridine-2- carboxaldimine （C19H24N2, NN-2）, N-（2,4,6-trimethylphenyl）pyridine-2-carboxaldimine （CIsH16N2, NN-3）, M is Ti, Zr and V, and n is 3 or 4, e.g. [NN-1]TiCh 1a, [NN-1]ZrCh 1b, [NN-1]VC13 1c, [NN-2]TiCh 2a, [NN-2]ZrCh 2b, [NN-2]VC13 2e, [NN-3]TiCh 3a have been investigated to catalyze ethylene polymerization in the presence of methylaluminoxane （MAO）. It was noteworthy that polyethylene characteristic of high molecular weight and wide or bimodal molecular weight distribution was formed with moderate to high activities.Early transition metal catalysts [N,N]MCln, in which [N,N] is N-（2,6-diisopropylphenyl） pyridine-2-carboxaldimine （C18H22N2, NN-1）, N-（2,6-diisopropylphenyl）-6-methylpyridine-2- carboxaldimine （C19H24N2, NN-2）, N-（2,4,6-trimethylphenyl）pyridine-2-carboxaldimine （CIsH16N2, NN-3）, M is Ti, Zr and V, and n is 3 or 4, e.g. [NN-1]TiCh 1a, [NN-1]ZrCh 1b, [NN-1]VC13 1c, [NN-2]TiCh 2a, [NN-2]ZrCh 2b, [NN-2]VC13 2e, [NN-3]TiCh 3a have been investigated to catalyze ethylene polymerization in the presence of methylaluminoxane （MAO）. It was noteworthy that polyethylene characteristic of high molecular weight and wide or bimodal molecular weight distribution was formed with moderate to high activities.

关 键 词：Early transition metal CATALYST ETHYLENE polymerization. 

分 类 号：O632.12[理学—高分子化学]