(19)

(11)

EP 2 585 566 A1

(12)

(43) Date of publication: 01.05.2013 Bulletin 2013/18 (21) Application number: 11730605.0 (22) Date of filing: 21.06.2011

(51) International Patent Classification (IPC):  C10M 173/00(2006.01) (86) International application number: PCT/EP2011/060370 (87) International publication number: WO 2011/161116 (29.12.2011 Gazette 2011/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 22.06.2010 GB 201010532 (71) Applicant: Norwegian University of Science and Technology (NTNU) 7491 Trondheim (NO)	(72) Inventors: KELE O LU, Serkan N-7491 Trondheim (NO) SJÖBLOM, Johan N-7491 Trondheim (NO) (74) Representative: Campbell, Neil Boyd  Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)