Magnesium-containing solid
Patent 4402863 Issued on September 6, 1983. Estimated Expiration Date: 
November 10, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 10, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3381047 3784481 Components of catalysts for polymerizing alpha-olefins and the catalysts formed from the components Process for producing polymers or copolymers of olefins containing at least 3 carbon atoms Catalyst component for polymerization of alpha-olefins and method of using it Catalyst component for polymerization of alpha-olefins and method for using the same Patent #: 4370257 InventorsAssigneeApplicationNo. 06/320165 filed on 11/10/1981US Classes:502/125, Nonmetallic organic oxygen containing502/115, Magnesium containing526/124.2, Contains a magnesium compound as the Group IIA metal compound526/124.7, Contains at least two non-transition elemental metals, hydrides thereof, or compounds containing carbon to non-transition metal atom bond, or mixtures thereof526/142, Non-metal material is organic oxygen-containing compound526/143Non-metal organic oxygen compound is halogen-containingExaminersPrimary: Garvin, Patrick P.Attorney, Agent or FirmInternational ClassC08F 10/00 (20060101)Foreign Application Priority Data1981-11-12 JPAbstractAccording to this invention, there is provided a magnesium-containing solid, obtained by contacting the reaction product of (1):a magnesium-containing solid, obtained by contacting the reaction product of:(a) metallic magnesium;(b) a halogenated hydrocarbon of the general formula RX in which R stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and X stands for a halogen atom; and(c) an alkoxy compound of the general formula X'm C(OR')4-m in which X' stands for a hydrogenor halogen atoms, or an alkyl, aryl or a cycloalkyl group having 1 to 10 carbon atoms, R' stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms and m is 0, 1 or 2, with (2) an organic aluminum compound.The magnesium-containing solid is employed as a carrier for a transition metal halide. The supported transition metal halide in combination with an aluminum alkyl cocatalyst such as aluminum triethyl is usefully employed for the polymerization of olefins. |
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