石油化工2001，Vol.30Issue(4)：275-280,6.
化学反应法MgCl2载体高效钛催化剂的乙烯-丙烯共聚合
Studies on the Copolymerization of Ethylene and Propylene with MgCl2 -Supported High-Yield Titanium Catalyst Made by Chemical Reaction Method
李三喜 1庞德仁 2黄葆同2
作者信息
- 1. 沈阳化工学院 材料科学与工程系,
- 2. 中国科学院长春应用化学研究所,
- 折叠
摘要
Abstract
MgCl2-supported titanium catalyst prepared by chemical reaction method with the components added in the sequence of MgCl2/n-BuOH/i-Bu3Al/TiCl4 and then activated by i-Bu3Al at normal pressure showed much higher activity in the copolymeriation of ethylene and propylene than in homopolymerization of either ethylene or propylene. The apparent r1 and r2 for ethylene and propylene copolymerization were determined to be 7.44 and 0.22, respectively for this catalyst, showing a very high relative activity of propylene as compared to cases reported before. A Tg of - 50 ℃ of this copolymer was representative of EP rubber. Studies by DSC, WAXD and DMA revealed that the copolymers were random EP copolymers with very low or little crystallinity. Explanations as to the higher activity of the catalyst and copolymer monomer sequence distribution are also disCussed关键词
催化剂/乙丙共聚/化学反应法/聚合分类
化学化工引用本文复制引用
李三喜,庞德仁,黄葆同..化学反应法MgCl2载体高效钛催化剂的乙烯-丙烯共聚合[J].石油化工,2001,30(4):275-280,6.
