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. 25, 2011
Filed:
Nov. 07, 2007
Kevin B. Stavens, Seabrook, TX (US);
Matthew W. Holtcamp, Huffman, TX (US);
Gary D. Mohr, Houston, TX (US);
William A. Lamberti, Stewartsville, NJ (US);
Kevin B. Stavens, Seabrook, TX (US);
Matthew W. Holtcamp, Huffman, TX (US);
Gary D. Mohr, Houston, TX (US);
William A. Lamberti, Stewartsville, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Apparatus and methods for gas phase polymerization are provided. The method can include polymerizing one or more olefins at gas phase conditions in a reactor comprising one or more process exposed surfaces in the presence of a catalyst system; and treating at least a portion of the one or more process exposed surfaces prior to injecting the catalyst system to reduce the number of surface hydroxyls or access of the catalyst system to the surface hydroxyls on the process exposed surfaces.