(19)

(11)

EP 1 692 249 A2

(12)

(88) Date of publication A3: 27.10.2005 (43) Date of publication: 23.08.2006 Bulletin 2006/34 (21) Application number: 04813239.3 (22) Date of filing: 07.12.2004

(51) International Patent Classification (IPC):  C10M 163/00(2006.01) C10M 161/00(2006.01) C10M 167/00(2006.01) (86) International application number: PCT/US2004/040895 (87) International publication number: WO 2005/061682 (07.07.2005 Gazette 2005/27)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 12.12.2003 US 528989 P (71) Applicant: The Lubrizol Corporation Wickliffe, Ohio 44092 (US)	(72) Inventors: WILBY, R. Ian Belper Derby DE56 1QN (GB) BARR, Douglas M. Wickliffe, OH 44092 (US) MCATEE, Rodney J. Belper Derby DE56 1QN (GB) (74) Representative: von Kreisler Selting Werner  Patentanwälte Deichmannhaus am Dom Bahnhofsvorplatz 1 50667 Köln 50667 Köln (DE)