ETHYLENE/PROPYLENE COPOLYMERIZATION BY NOVEL VANADIUM/TITANIUM BIMETALLIC CATALYST
Vanadium-based Ziegler-Natta catalysts are unique in their abilities to incorporate ethylene and propylene monomers in a random order.But the low activity of vanadium catalyst limits its further application.Comparably,the traditional titanium-based Ziegler-Natta catalysts used in ethylene/propylene copolymerization had a high catalytic activity while produced copolymers with block structures more often. Therefore, there is a great potential in combining the advantages of both catalytic systems to prepare a novel vanadium/titanium bimetallic catalyst for the production of E/P copolymers. It is well known that the introduction of titanium chloride increases the yields of polymers during the synthesis of polymers on the base of vanadium-based catalysts. Several reviews and patents have been published about recent advances in olefin polymerization using binary catalyst systems.However, most publications were about Zielger-Natta/metallocene bimetallic catalysts while very few were about the vanadium/titanium bimetallic Ziegler-Natta catalysts with a low cost but an excellent performance.
Tao Jiang Wei Du Dengfei Wang Li Zhang
Department of Chemistry and Chemical Engineering,Daqing Petroleum Institute,Daqing,China
国际会议
5th International Symposium on High-Tech Polymer Materials(HTPM-V)(第五届国际高技术高分子材料学术会议)
北京
英文
225-226
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）