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. 23, 2010
Filed:
Apr. 04, 2007
Tom Van Nuland, Baton Rouge, LA (US);
Roger Claessens, Berlaar, BE;
Henri Aime Lammens, Antwerp, BE;
Geert Vaes, Heist-op-den-Berg, BE;
Tom Van Nuland, Baton Rouge, LA (US);
Roger Claessens, Berlaar, BE;
Henri Aime Lammens, Antwerp, BE;
Geert Vaes, Heist-op-den-Berg, BE;
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention provides an apparatus and a process for the high pressure polymerization of ethylene, optionally with one or more comonomers, in which unreacted monomer is separated from the polymer in a separation system having at least first, second and third separation vessels and in which off gas from the second vessel is recombined back into the product mixture upstream of the first separation vessel, preferably using a jet pump.