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:
Mar. 24, 2009
Filed:
Oct. 17, 2007
Robert O. Hagerty, La Porte, TX (US);
Kevin B. Stavens, Seabrook, TX (US);
Marc L. Dechellis, Houston, TX (US);
D. Brett Fischbuch, Kingwood, TX (US);
James M. Farley, League City, TX (US);
Robert O. Hagerty, La Porte, TX (US);
Kevin B. Stavens, Seabrook, TX (US);
Marc L. DeChellis, Houston, TX (US);
D. Brett Fischbuch, Kingwood, TX (US);
James M. Farley, League City, TX (US);
Univation Technologies, LLC, Houston, TX (US);
Abstract
The present invention relates to a continuous gas phase process comprising polymerizing one or more hydrocarbon monomer(s) in a fluidized bed reactor in the presence of a Ziegler-Natta-type catalyst system and a condensable fluid for a period of at least 12 hours where the bed temperature is less than the Critical Temperature and the dew point temperature of the gas composition in the reactor is within 25° C. of the bed temperature.