(19)

(11)

EP 1 851 774 A1

(12)

(43) Date of publication: 07.11.2007 Bulletin 2007/45 (21) Application number: 06704637.5 (22) Date of filing: 09.02.2006

(51) International Patent Classification (IPC):  H01B 3/46(2006.01) C08L 83/04(2006.01) (86) International application number: PCT/SE2006/000183 (87) International publication number: WO 2006/085816 (17.08.2006 Gazette 2006/33)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 09.02.2005 SE 0500328 (71) Applicant: ABB RESEARCH LTD. 8050 Zürich (CH)	(72) Inventors: HILLBORG, Henrik S-722 10 Västerås (SE) JOHANSSON, Tommy S-722 46 Västerås (SE) WIHLSSON, Lennart S-943 32 Öjebyn (SE) (74) Representative: Kock, Ina  ABB AB Legal Affairs and Compliance/ Intellectual Property Forskargränd 7 721 78 Västerås 721 78 Västerås (SE)