Catalyst component for use in the polymerization of .alpha.-olef

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526126, 526132, 526133, 526134, 526160, 526170, 526351, 5263485, 556 11, 556 12, 556 43, 556 53, 556 58, 556 87, 502103, 502117, 502152, 502154, 502155, C08F 464, C07F 702, C07F 1700

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054896592

ABSTRACT:
A catalyst component for use in the polymerization of .alpha.-olefins, comprising a compound represented by the following general formula [I]: ##STR1## wherein R.sup.1 s represent a hydrogen atom, a C.sub.1-6 hydrocarbon group or a C.sub.1-12 hydrocarbon group containing silicon; each of R.sup.2 and R.sup.3 independently represents a divalent group selected from the group consisting of a hydrocarbon group having 3 to 30 carbon atoms and a silicon-containing hydrocarbon group having 1 to 30 carbon atoms and 1 to 6 silicon atoms, provided that at least one of R.sup.2 and R.sup.3 is said silicon-containing hydrocarbon group; Q represents a C.sub.1-20 divalent hydrocarbon group, a silylene group, a silylene group with a C.sub.1-20 hydrocarbon group, a germylene group, or a germylene group with a C.sub.1-20 hydrocarbon group; X and Y represent H, a halogen, a C.sub.1-20 hydrocarbon group, or a C.sub.1-20 hydrocarbon group containing oxygen, nitrogen or phosphorus; and M represents a Group IVB to VIB transition metal of the Periodic Table. Production of .alpha.-olefin polymers having a high melting point and a high molecular weight in a high yield and a process for producing .alpha.-olefin polymers is made possible upon the use of the catalyst.

REFERENCES:
patent: 5104838 (1992-04-01), Fujita et al.
patent: 5268495 (1993-12-01), Riepl et al.
patent: 5314973 (1994-05-01), Welborn, Jr.

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