Isospecific polymerization of alpha-olefins in the presence of metallocomplex catalysts fixed on graphite

被引：7
|
作者：
Nedorezova, PM
Galashina, NM
Tsvetkova, VL
Sukhova, TA
Saratovskikh, SL
Babkina, ON
Dyachkovskii, FS
机构：
[1] Institute of Chemical Physics, Russian Academy of Science, Moscow
来源：
EUROPEAN POLYMER JOURNAL | 1996年 / 32卷 / 09期
关键词：
D O I：
10.1016/0014-3057(96)00043-2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Studies of activity and stereospecificity in polymerizations of propylene and butene-l with several metal-complex catalysts fixed on a graphite surface are reported. High catalytic activity was observed at a strictly determined Ti:graphite ratio. Maximum stereospecificity is observed at the maximum of catalytic activity. Characterization of the catalyst obtained from the interaction of TiCl4-(C2H5)(2)AlCl with graphite by chromatographic, polarographic, X-ray and ESR techMques was directed to the origin of the modifying effect of graphite. These results indicated the formation of stable metal complexes containing Ti compounds with Ti-C2H5 moieties in the sites of crystal-lattice defects. Some electrophysical and mechanical properties of polypropylene-graphite sample are also presented. Copyright (C) 1996 Elsevier Science Ltd
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页码：1161 / 1165
页数：5
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