催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (1): 3-4.

• 研究快讯 • 上一篇    下一篇

以聚丙二醇二苯甲酸酯为给电子体的丙烯聚合催化剂

张巧风1,原宇平2,3,张春雨2,陈斌2,张学全1,2   

  1. 1 长春工业大学生物工程学院, 吉林长春 130012; 2 中国科学院长春应用化学研究所, 吉林长春 130022; 3 中国科学院研究生院, 北京 100049
  • 收稿日期:2007-01-25 出版日期:2007-01-25 发布日期:2010-08-28

A Propylene Polymerization Catalyst Using Poly (propylene glycol) dibenzoate as Electron Donor

ZHANG Qiaofeng~1; YUAN Yuping~ 2; 3; ZHANG Chunyu~2; CHEN Bin~ 2; ZHANG Xuequan~ 1; 2   

  1. 1 School of Biological Engineering; Changchun University of Technology; Changchun 130012; Jilin; China; 2 Changchun Institute of Applied Chemistry; The Chinese Academy of Sciences; Changchun 130022; 3 Graduate University of Chinese Academy of Sciences; Beijing 100049; China
  • Received:2007-01-25 Online:2007-01-25 Published:2010-08-28

PDF

2214

被引次数

7

摘要： 采用聚丙二醇二苯甲酸酯(PPGDB)为内给电子体制备了一种新的丙烯聚合催化剂MgCl2/PPGDB/TiCl4. 该催化剂用于丙烯聚合时,除了具有与以邻苯二甲酸二异丁酯为给电子体的催化剂相当的活性和立体定向性外,其特点在于所得产物的分子量分布较宽(Mw/Mn＞8.0). 采用红外光谱研究了催化剂中PPGDB与MgCl2的作用机制,结果表明PPGDB中的酯官能团和醚官能团可同时与MgCl2配位. 这种双官能团的配位作用是所得聚合物分子量分布较宽的主要原因.

关键词: 聚丙二醇二苯甲酸酯, 给电子体, 氯化镁, 负载型催化剂, 丙烯, 聚合, 宽分子量分布

Abstract: A novel MgCl_2-supported Ziegler-Natta catalyst using poly(propylene glycol)dibenzoate (PPGDB) as the internal electron donor for propylene polymerization was prepared. The catalyst exhibited comparable activity and stereoselectivity with that using normal phthalate as electron donor but rather broader molecular weight distribution of resulting polypropylene. Examination of the interaction between PPGDB and MgCl_2 by using infrared spectroscopy showed that both C=O and C-O-C of PPGDB could coordinate to MgCl2.

Key words: poly（propylene glycol）dibenzoate, electron donor, magnesium chloride, supported catalyst, propylene, polymerization, broad molecular weight distribution