The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2003
Filed:
Sep. 18, 2000
A. J. Brandolini, Somerville, NJ (US);
Yury Viktorovich Kissin, East Brunswick, NJ (US);
Robert Ivan Mink, Warren, NJ (US);
Thomas E. Nowlin, Princeton Junction, NJ (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
The present invention provides cocatalysts for activating metallocene complexes in olefin polymerization reactions, and metallocene catalyst systems using the cocatalysts. The cocatalysts of the present invention include: (a) a halo-organoaluminum compound of the formula Al R X , where Al is aluminum, each R is independently a C to C alkyl group, X is a halide, n is 1 or 2, and m is determined by the valency of Al; and (b) a dialkylmagnesium compound of the formula MgR′ , where Mg is magnesium and R′ is a C to C alkyl group. The components (a) and (b) are used in amounts such that the molar ratio of Al:Mg is at least 2, preferably from 2:1 to 5:1.