丁二酮钛配合物催化乙烯均相聚合

石油炼制与化工 ›› 2014, Vol. 45 ›› Issue (11): 38-43.

丁二酮钛配合物催化乙烯均相聚合

程正载^1,2,张卫星¹,龚凯¹,叶龙²

1. 武汉科技大学化学工程与技术学院
2. 湖北省煤转化与新型炭材料重点实验室

收稿日期:2014-04-08 修回日期:2014-05-21 出版日期:2014-11-12 发布日期:2014-10-28
通讯作者: 程正载 E-mail:hbchengzz@163.com
基金资助:
国家自然科学基金资助项目;煤转化与新型炭材料湖北省重点实验室2013年开放基金项目

ETHYLENE HOMOGENEOUS POLYMERIZATION CATALYZED BY NEW TYPE BUTANEDIONE TITANIUM COMPLEX

Received:2014-04-08 Revised:2014-05-21 Online:2014-11-12 Published:2014-10-28

摘要/Abstract

摘要： 经过丁二酮的羰基与邻氨基酚的氨基的加成缩合反应制得新型双亚胺类配体，与四氯化钛配位合成了丁二酮缩邻氨基酚钛配合物，以其为主催化剂、以甲基铝氧烷为助催化剂，探讨了该催化剂体系在甲苯溶剂中对乙烯均聚的催化性能。在反应温度为40 ℃、反应压力为0.8 MPa、反应时间为45 min、助催化剂与主催化剂的摩尔比为4500的最佳条件下，催化剂的活性为1.53×106 g / (mol?h)，所得聚合物的黏均相对分子质量高于4.5×105，并且具有较高的熔点（>130 ℃），说明该聚合物为高结晶线性聚乙烯。

Abstract: A new type double imine ligand was synthesized by the addition condensation reaction of butanedione carbonyl group and O-aminophenol amino. The butanedione o-aminophenol titanium complexe (titanium complex) was prepared by treatment of TiCl4 with the ligand. Activated by the methylaluminoxane (MAO), the performance of the complex for ethylene homopolymerization in toluene solvent was evaluated. The catalytic activity of the titanium complex reaches 1.53×106 g PE/(mol?h) at the reaction conditions: 40℃，0.8MPa，reaction time of 45 min and the mole ratio of [MAO]/[Ti-complex] of 4500, The high linearity and crystallinity PE product has a relative molecular weight higher than 4.5 x 105 and a high melting point (> 130 ℃).

程正载张卫星龚凯叶龙. 丁二酮钛配合物催化乙烯均相聚合[J]. 石油炼制与化工, 2014, 45(11): 38-43.

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