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:
Sep. 01, 2009
Filed:
Jul. 05, 2006
Ivo T. Goossens, Kapelle-Op-Den-Bos, BE;
Fausto F. Ciancio, Veerle-Laakdal, BE;
Paul Clymans, Kapelle-op-den-bos, BE;
Philip H. Cornelissen, Heverlee, BE;
Martin J. Decoster, Diest, BE;
Willy DE Koster, Dilbeek, BE;
Henri A. Lammens, Antwepen, BE;
Tom Van Nuland, Baton Rouge, TX (US);
Ivo T. Goossens, Kapelle-Op-Den-Bos, BE;
Fausto F. Ciancio, Veerle-Laakdal, BE;
Paul Clymans, Kapelle-op-den-bos, BE;
Philip H. Cornelissen, Heverlee, BE;
Martin J. Decoster, Diest, BE;
Willy De Koster, Dilbeek, BE;
Henri A. Lammens, Antwepen, BE;
Tom Van Nuland, Baton Rouge, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention relates to a process for the manufacture of ethylene polymers and copolymers in which ethylene is compressed in a primary compressor at a throughput of at least 55 tonnes/hour, mixed with recycled ethylene and further compressed in a two-stage reciprocating secondary compressor having at least 14 cylinders to a pressure of at least 2300 bar at a throughput of at least 120 tonnes/hour, heating at least a portion of that ethylene to a temperature of at least 95° C. and introducing it into a tubular reactor of diameter at least 65 mm and a length of at least 1500 m, introducing initiator in at least three reaction zones to give a conversion of at least 28% and maintaining a pressure drop over the reactor to maintain a flow velocity of at least 6 m/s.