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. 03, 2015
Filed:
Mar. 08, 2005
Philipp Walter, Freiburg, DE;
Anneli Pakkanen, Stenungsund, SE;
Jeroen Oderkerk, Stenungsund, SE;
Magnus Palmlof, Vastra Frolunda, SE;
Lars Hojer, Ytterby, SE;
Bill Gustafsson, Stenungsund, SE;
Tore Dreng, Larvik, NO;
Philipp Walter, Freiburg, DE;
Anneli Pakkanen, Stenungsund, SE;
Jeroen Oderkerk, Stenungsund, SE;
Magnus Palmlof, Vastra Frolunda, SE;
Lars Hojer, Ytterby, SE;
Bill Gustafsson, Stenungsund, SE;
Tore Dreng, Larvik, NO;
Borealis Technology Oy, , FI;
Abstract
A peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof are described. The pipe is characterized in that it comprises an ethylene polymer with a density of less than 950 kg/mobtained by polymerization with a single-site catalyst and having a shear thinning index, SHIof less than 20 and a MWD of <10. The method is characterized in that it comprises polymerizing ethylene, optionally together with at least one comonomer, with a single-site catalyst to provide the above defined ethylene polymer, forming the ethylene polymer into a pipe by extrusion and crosslinking it.