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:
Jul. 24, 2012
Filed:
Mar. 27, 2009
Michael W. Weber, Humble, TX (US);
James R. Lattner, LaPorte, TX (US);
Laughlin G. Mccullough, League City, TX (US);
Randell W. Dickey, Baytown, TX (US);
Steven D. Brown, League City, TX (US);
Peter N. Loezos, Houston, TX (US);
Michael W. Weber, Humble, TX (US);
James R. Lattner, LaPorte, TX (US);
Laughlin G. McCullough, League City, TX (US);
Randell W. Dickey, Baytown, TX (US);
Steven D. Brown, League City, TX (US);
Peter N. Loezos, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention relates to olefin oligomerization methods and methods for reducing/inhibiting fouling in olefin oligomerization reactions comprising: contacting, in an oligomerization reactor (e.g., under oligomerization conditions), an alpha-olefin feed, a catalyst having an olefin selectivity of at least 90 mol % to a desired oligomerization product, a polymer anti-foulant, and optionally a diluent; selectively producing an effluent comprising the desired oligomerization product, unreacted olefin, and alpha-olefin-based polymer byproduct that causes fouling. The amount of polymer anti-foulant can be chosen to limit fouling to ≦20 g/kg desired oligomerization product, to remediate ≧3 grams fouled polymer/kg desired oligomerization product, and/or to reduce/inhibit polymer fouling by ≧10% over a selective oligomerization with substantially no added polymer anti-foulant. Advantageously, desired oligomerization product so obtained can also be polymerized/copolymerized with an alpha-olefin such as ethylene.