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(11)

EP 2 195 813 A1

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(43) Date of publication: 16.06.2010 Bulletin 2010/24 (21) Application number: 07820881.6 (22) Date of filing: 03.10.2007

(51) International Patent Classification (IPC):  H01B 3/40(2006.01) C08L 63/00(2006.01) C08K 3/34(2006.01) (86) International application number: PCT/EP2007/060504 (87) International publication number: WO 2009/043376 (09.04.2009 Gazette 2009/15)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: ABB Research LTD 8050 Zürich (CH)	(72) Inventors: CARLEN, Martin CH-5443 Niederrohrdorf (CH) KORNMANN, Xavier D-79787 Lauchringen (DE) KRIVDA, Andrej CH-5430 Wettingen (CH) GREUTER, Felix CH-5406 Rütihof (CH) (74) Representative: ABB Patent Attorneys  C/o ABB Schweiz AG Intellectual Property (CH-LC/IP) Brown Boveri Strasse 6 CH-5400 Baden CH-5400 Baden (CH)