Dynamic model of the homopolymerization of propylene with the Me2Si(2-Me-Ind)2ZrCl catalyst:: The effect of reaction variables

被引：4

作者：

Palza, H

Velilla, T

Quijada, R

机构：

[1] Univ Chile, Dept Ingn Quim, Fac Ciencias Fis & Matemat, Santiago, Chile

[2] Univ Chile, Ctr Invest Interdisciplinaria Avanzada Ciencias Ma, Santiago, Chile

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2006年 / 45卷 / 01期

关键词：

propylene polymerization; metallocene catalyst; mathematical modeling; reaction mechanism;

D O I：

10.1080/03602550500373592

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of four variables-temperature, propylene pressure, Al/Zr ratio, and catalyst concentration-on catalyst productivity and molecular weight of the polymer synthesized with Me2Si(2-Me-Ind) 2ZrCl2 was studied. A mathematical model was developed based on the method of the moments that fit the experimental data. A special effect was seen with respect to the co-catalyst (MAO) on productivity, and therefore it was necessary to add deactivation-reactivation mechanisms associated with MAO to the model. With respect of the molecular weight of the polymer, a bimolecular transfer reaction associated with the active center was added to fit the experimentally observed data.

引用

页码：85 / 94

页数：10

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