Synthesis and characterization of polymers from 1-decene catalyzed by bridged metallocene

doi:10.16085/j.issn.1000-6613.2015.04.032

Abstract

Abstract: Polymerization of 1-decene catalyzed by bridged metallocene catalyst system,rac-Et(1-Ind)₂ZrCl₂/Al(ⁱBu)₃/[Me₂NHPh]⁺[B(C₆F₅)₄]^－,was studied. The effects of the concentration of metallocene catalyst,Al/Zr mole ratio,B/Zr mole ratio,temperature,conversion time,viscosity and molar mass were investigated. The reaction condition was chosen as follows:1-decene 20mL,toluene 20mL,Zr/1-decene mole ratio 8×10^-5,Al/Zr mole ratio 80,B/Zr mole ratio 1.5,reaction temperature 80℃,and reaction time 1h. The conversion was 96.2%. The product structure was characterized by ¹³C NMR and ¹H NMR. The polymer obtained under optimized condition has a high viscosity index (259) and a narrow molecular weight distribution (2.088),which is a desired component for lubricating based oil.

Key words: catalyst, polymerization, optimization, bridged metallocene, 1-decene

摘要： 采用桥联茂金属催化体系rac-Et(1-Ind)₂ZrCl₂/Al(ⁱBu)₃/[Me₂NHPh]⁺[B(C₆F₅)₄]^-催化1-癸烯聚合,考察了茂金属浓度、Al/Zr摩尔比、B/Zr摩尔比、温度、反应时间对反应转化率、黏度和摩尔质量的影响.当反应条件为1-癸烯20mL、甲苯20mL、Zr/烯摩尔比8×10^-5、Al/Zr摩尔比80、B/Zr摩尔比1.5、温度80℃、反应时间1h时,转化率达到96.2%.采用¹³C NMR和¹H NMR表征了产物的结构,优化条件下所得的聚合产物具有高黏度指数(259)和低分子量分布(2.088),可作为理想的润滑油基础油的原料.

关键词: 催化剂, 聚合, 优化, 桥联茂金属, 1-癸烯

CLC Number:

JIANG Hongbo, WU Shaogeng. Synthesis and characterization of polymers from 1-decene catalyzed by bridged metallocene[J]. Chemical Industry and Engineering Progree, 2015, 34(04): 1088-1092,1121.

江洪波, 毋少庚. 桥联茂金属催化1-癸烯聚合及其产物结构与性能[J]. 化工进展, 2015, 34(04): 1088-1092,1121.

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