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经过十几年的研究和开发,Ziegler-Natta催化剂已能合成出众多的性能各异的聚烯烃材料.近十几年来均相茂金属催化剂的发展,为具有各种特殊结构,特殊性能聚烯烃的制备及其聚合机理的研究提供了新的机会.支化聚乙烯是一类很重要的聚烯烃材料,此类聚烯烃往往是由乙烯与α-烯烃共聚得到的.仅以乙烯为单体制备文化聚乙烯具有很大的理论意义和应用价值.近来有用二组分主催化剂仅以乙烯为单体制备支化聚乙烯的报道,其中一组分使乙烯二聚制得丁烯,另一组分进行乙烯和丁烯共聚.我们尝试了许多单组分主催化剂体系后
After more than ten years of research and development, Ziegler-Natta catalyst has been able to synthesize a large number of different properties of polyolefin materials.Homogeneous metallocene catalyst development over the past decade, with a variety of special structures, special properties of polyolefin And preparation of its polymerization mechanism provides new opportunities for research.Polyethylene is a very important class of polyolefin materials, such polyolefins are often obtained by the copolymerization of ethylene and alpha-olefin obtained only ethylene monomer Preparation of cultural polyethylene has great theoretical and practical value.Recently, two-component catalyst for the production of branched polyethylene with only ethylene monomer reported, one of the components of the ethylene dimerization obtained butene, another The components were copolymerized with ethylene and butene.We tried many one-component procatalyst systems