Ionic compound and olefin polymerization catalyst containing the

Details Ionic compound and olefin polymerization catalyst containing the Ionic compound and olefin polymerization catalyst containing the

1997-02-10

1999-02-09

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

568 1, 568 6, 556173, 556 9, 502158, 502203, 502231, C07F 702

Patent

active

058697233

DESCRIPTION:

BRIEF SUMMARY
This application is a 371 of PCT/JP96/01514 filed Jun. 5, 1996.


FIELD OF THE INVENTION

This invention relates to ionic compounds, method for preparing the same, olefin polymerization catalyst components containing the same, and olefin polymerization catalyst compositions containing the components.


BACKGROUND OF THE INVENTION

Heretofore, there has been known a method of producing olefins using a metallocene compound and methylaluminoxane as a catalyst in a homogeneous system. For example, Japanese Patent Application Laid-open No. 19309/1983 discloses a method of producing ethylene homopolymers and ethylene/C.sub.3 -C.sub.12 .alpha.-olefin copolymers using biscyclopentadienyl zirconium dichloride and a linear or cyclic methylaluminoxane as a catalyst. Japanese Patent Application Laid-open No. 130314/1986 discloses a method of producing stereoregular polypropylenes using a catalyst comprising a zirconium compound containing as a ligand a compound having two indenyl groups intervened with an ethylene group and aluminoxane. Also, Japanese Patent Application Laid-open No. 41303/1990 discloses a method of producing poly-.alpha.-olefins having a good syndiotacticity.
There have also been proposed catalyst composition systems that use no aluminoxane cocatalyst. Taube et al. performed polymerization of ethylene !.sup.+ (Cp: a cyclopentadienyl group, Me: a methyl group, THF: a tetrahydrofuranyl group, Ph: a phenyl group) (J. Organometall. Chem., 347, C9 (1988)). In J. Am. Chem. Soc., 109, 4111 (1987), Jordan et al. reported cyclopentadienyl group, R: a methyl group or a benzyl group, L: a Lewis base) functions as a catalyst for polymerization of ethylene. Japanese Patent Application Laid-open Nos. 501950/1989 and 502036/1989 disclose methods of polymerizing olefins using catalysts comprising a cyclopentadienyl metal compound and an ionic compound which can stabilize the cyclopentadienyl metal cations. Zambelli et al. reported that use of a catalyst which comprises a zirconium compound having a cyclopentadiene derivative as a ligand, trimethylaluminum and fluorodimethylaluminum enables production of isotactic polypropylenes (macromolecules, 22, 2186 (1989)).
However, use of the above-described catalysts, when used in slurry system processes or gaseous system processes, caused problems since the polymer is produced in the form of fine powder having a low bulk density and, hence, it is difficult to handle it and the polymer produced attaches to an inner wall of the reactor.
In order to solve these problems, various proposals have been made to have the catalysts carried on solid carriers.
For example, Japanese Patent Application Laid-open Nos. 108610/1986, 296008/1986, 280703/1988, 22804/1988, 51405/1988, 51407/1988, 55403/1988, 61010/1988, 248803/1988, 100808/1992, 74412/1991, 709/1991 and 7306/1992 disclose methods of producing olefins using solid catalysts comprising inorganic metal oxides such as silica, alumina, silica-alumina and the like having carried thereon metallocene compounds and methylaluminoxane, respectively.
Japanese Patent Application Laid-open Nos. 6003/1989, 6004/1989, 6005/1989, 11104/1989 and 11105/1989 disclose methods in which catalysts are used that comprise a metallocene compound and aluminoxane carried on an organometallic magnesium compound.
Also, Japanese Patent Application Laid-open Nos. 260903/1988, 31403/1992 and 74411/1991 disclose polymerization methods in which catalysts are used that comprise a metallocene compound and aluminoxane carried on polymer such as polyethylene, polystyrene, respectively.
Japanese Patent Application Laid-open Nos. 276805/1986 and 74415/1991 disclose polymerization methods using a metal oxide and a metallocene compound having carried thereon only methylaluminoxane.
Further, Japanese Patent Application Laid-open Nos. 259004/1989, 259005/1989, 56928/1994 and 56929/1994 disclose methods in which catalysts are used that comprise a metallocene compound having a special ligand, carried on a porous metal oxide carrier, such as silica. On the other hand, Japanese

REFERENCES:
CA:106:18652 abs of J Am Chem Soc, by Katz, 108(24) pp. 7640-7645, 1986.
Cas registry No. 186499-67-2, Feb. 1997.
CA:96:52379, abs of "Synthesis and Reactivity of trimethylsilylboranes", Liebigs Ann Chem, Werner, (11), pp. 2067-2080, 1981.
CA:95:497897, abs of "Simple nucleophilic silylation reaction on carbonyl functions with trimethylsilylaluminum compounds". Agnew Chem, Lutz, 93(6-7), pp. 607-08, 1981.

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