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:
Aug. 03, 2010
Filed:
Jun. 21, 2005
Perry Nylander, Gothenburg, SE;
Alfred Campus, Eysins, CH;
Annika Smedberg, Myggenas, SE;
Karl-michael Jäger, Gothenburg, SE;
Ulf Nillson, Stenungsund, SE;
Hans Eklind, Stenungsund, SE;
Claes Broman, Odsmal, SE;
Wilfried Kalkner, Berlin, DE;
Marc Brüggemann, Berlin, DE;
Perry Nylander, Gothenburg, SE;
Alfred Campus, Eysins, CH;
Annika Smedberg, Myggenas, SE;
Karl-Michael Jäger, Gothenburg, SE;
Ulf Nillson, Stenungsund, SE;
Hans Eklind, Stenungsund, SE;
Claes Broman, Odsmal, SE;
Wilfried Kalkner, Berlin, DE;
Marc Brüggemann, Berlin, DE;
Borealis Technology Oy, Porvoo, FI;
Abstract
The present invention relates to a semiconductive polymer composition comprising an olefin homo- or copolymer wherein the composition has a direct current volume resistivity of less than 1000 Ohm·cm at 90° C., an elongation at break which after aging for 240 hours at 135° C. does not change by more than 25%, and a total number of structures of 20 or less in the SIED test. Furthermore, the present invention relates to an electric power cable comprising a conductor, a semiconducting layer and, adjacent to the semiconducting layer, an insulation layer, wherein the semiconducting layer is formed by said semiconductive polymer composition and to the use of said semiconducting polymer composition for the production of a semiconductive layer of an electric power cable.