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:
May. 20, 2008
Filed:
Jan. 25, 2007
Edward F. Smith, Kingwood, TX (US);
Stanley J. Katzen, Baton Rouge, LA (US);
Anthony N. Speca, Annapolis, MD (US);
Thomas W. Towles, Baton Rouge, LA (US);
Edward F. Smith, Kingwood, TX (US);
Stanley J. Katzen, Baton Rouge, LA (US);
Anthony N. Speca, Annapolis, MD (US);
Thomas W. Towles, Baton Rouge, LA (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method for polymerizing ethylene is provided. The method can include preparing a supported catalyst composition comprising the steps of: (a) dehydrating a chromium impregnated support; (b) at least partially dissolving a titanium-containing compound in one or more inert solvents to provide a solution comprising the titanium-containing compound; (c) contacting the dehydrated chromium impregnated support with the titanium-containing solution to provide a mixture comprising the solvent, titanium-containing compound and chromium impregnated support; (d) removing the solvent from the mixture; and (e) activating the product of step (d) at a temperature of at least 800° F. (427° C.) to provide a supported titanated chrome catalyst composition. The supported titanated chrome catalyst composition can be feed to a slurry reactor, and contacted with an optional co-catalyst, under polymerization conditions, with ethylene.