Copolymers of Ethylene and Vinyl Amino Acidic Ester with High Molecular Weight Prepared by Non-metallocene Catalysts
作者:Jing Wang、Feng Nan、Jiangping Guo、Jian Wang、Xianghui Shi、Haibing Huang、Qigu Huang、Wantai Yang
DOI:10.1007/s10562-015-1686-1
日期:2016.3
Non-metallocene catalysts containing [N, Si, N, P]-type ligands based on diphenyl phosphorus-phenylamine and their derivatives were synthesized and characterized by H(13C) NMR, ESI–MS and micro analysis. They were able to catalyze copolymerization of ethylene with N-acetyl-O-(hex-5-enyl)-l-tyrosine ethyl ester after activated by methylaluminoxane (MAO). Effects of transition metal atoms (Ti, Zr and
合成了含有基于二苯基磷-苯胺及其衍生物的 [N, Si, N, P] 型配体的非茂金属催化剂,并通过 H(13C) NMR、ESI-MS 和显微分析进行表征。在甲基铝氧烷 (MAO) 活化后,它们能够催化乙烯与 N-乙酰基-O-(己-5-烯基)-l-酪氨酸乙酯的共聚反应。研究了过渡金属原子(Ti、Zr 和 Hf)、配体结构和聚合条件的影响。所得聚合物的结构和性能通过FT-IR、13C NMR、GPC和DSC表征。结果表明,所得共聚物的重均分子量高达 2.70 × 105 g/mol,共聚单体在共聚物链中的掺入率为 23.07 wt%。共聚物的熔融温度高达138。