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:
Nov. 15, 2011
Filed:
May. 17, 2007
Qing Yang, Bartlesville, OK (US);
Michael D. Jensen, Laurel, MD (US);
Matthew G. Thorn, Lebanon, OH (US);
Kumudini C. Jayaratne, Helsinki, FI;
Tony R. Crain, Niotaze, KS (US);
Qing Yang, Bartlesville, OK (US);
Michael D. Jensen, Laurel, MD (US);
Matthew G. Thorn, Lebanon, OH (US);
Kumudini C. Jayaratne, Helsinki, FI;
Tony R. Crain, Niotaze, KS (US);
Chevron Phillips Chemical Company, L.P., The Woodlands, TX (US);
Abstract
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with a borinic acid or boronic acid prior to contacting this mixture with the acidic activator-support and an organoaluminum compound.