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:
Dec. 14, 2010
Filed:
Aug. 08, 2006
Henrik Andtsjoe, Porvoo, FI;
Michiel Bergstra, Helsinki, FI;
Ralf Karlsson, Henaan, SE;
Klaus Nyfors, Porvoo, FI;
Urban Thorngren, Goeteborg, SE;
Henrik Andtsjoe, Porvoo, FI;
Michiel Bergstra, Helsinki, FI;
Ralf Karlsson, Henaan, SE;
Klaus Nyfors, Porvoo, FI;
Urban Thorngren, Goeteborg, SE;
Borealis Technology Oy, Porvoo, FI;
Abstract
The present invention relates to a process for the preparation of multimodal ethylene homo- or copolymers in at least two stages, the process comprising preparation of a first ethylene homo- or copolymer fraction in a loop reactor in slurry phase, preparation of a second ethylene homo- or copolymer fraction in a gas phase reactor, by using a catalyst not containing an inorganic oxide support, and operating the gas phase reactor in such conditions that at least part of the gas is recycled, and that at least a part of the recycled gas is condensed and the (partially) condensed gas is re-introduced into the gas phase reactor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile