SYNTHESES AND MODELS FOR STEREOSPECIFIC METALLOCENES

被引：101
作者：
EWEN, JA [1 ]
ELDER, MJ [1 ]
机构：
[1] GLAXO INC, RES INST, RES TRIANGLE PK, NC 27709 USA
来源：
MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1993年 / 66卷
关键词：
D O I：
10.1002/masy.19930660116
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Stereospecific, bridged [LL']M(R)+ catalysts (L,L' = substituted-cp, ind, or flu; R = hydrocarbyl) have been prepared by three new synthetic procedures. Propylene polymerizations with our new catalyst synthetic reagents, tris(pentafluorophenyl)boron (F15), magnesium dichloride, and trityl tetrakis(pentafluorophenyl) borate (trityl-F20) are compared with results obtained with the N,N-dimethyl-anilinium-F20 salt and with methylaluminoxane (MAO). Trimethylaluminium(TMA) or triethylaluminium(TEAL) scavenged poisons in the MAO free polymerizations. The site-control mechanism is discussed.
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页码：179 / 190
页数：12
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