Catalyst component for polymerization of alpha-olefins and proce

Details Catalyst component for polymerization of alpha-olefins and proce Catalyst component for polymerization of alpha-olefins and proce

1997-11-20

2000-07-04

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526134, 526160, 526943, 502103, 502117, 502152, 556 11, 556 53, C08F 444

Patent

active

060840439

ABSTRACT:
A catalyst component for the polymerization of alpha-olefins, represented by the following formula [I]: ##STR1## wherein R.sup.1 -R.sup.3 =H, a halogen, a C.sub.1-10 hydrocarbon radical, a Si-containing C.sub.1-18 hydrocarbon radical, or a halogen-containing C.sub.1-10, hydrocarbon radical (provided that R.sup.1 and R.sup.2 cannot be hydrogen at the same time); n=2 to 7; Q=a C.sub.1-20 hydrocarbon radical, a silylene or oligosilylene group having or not having a C.sub.1-20 hydrocarbon radical, a germylene group having or not having a C.sub.1-20 hydrocarbon radical; X and Y=H, a halogen, a C.sub.1-20 hydrocarbon radical, or an O- or N-containing C.sub.1-20 hydrocarbon radical; and M=a transition metal selected from the groups IVB-VIB; a catalyst for the polymerization of alpha-olefins, comprising the catalyst component; and a process for producing alpha-olefin polymers, where use is made of the catalyst. Use of the catalyst will produce alpha-olefin polymers having a high melting point and a high molecular weight in a high yield.

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R L Halterman, Chem. Rev. 1992, 92, 965, 984-986 "Synthesis and application of chiral cyclopentadienylmetal complexes".

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