(19)

(11)

EP 2 776 691 A1

(12)

(43) Date of publication: 17.09.2014 Bulletin 2014/38 (21) Application number: 12847646.2 (22) Date of filing: 02.11.2012

(51) International Patent Classification (IPC):  F02B 47/00(2006.01) (86) International application number: PCT/US2012/063189 (87) International publication number: WO 2013/070503 (16.05.2013 Gazette 2013/20)

(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: 11.11.2011 US 201161558779 P (71) Applicant: Afton Chemical Corporation Richmond, Virginia 23219 (US)	(72) Inventor: FANG, Xinggao Midlothian, VA 23114 (US) (74) Representative: Dunleavy, Kevin James  Mendelsohn, Drucker and Dunleavy, P.C. p/o De Vries & Metman Overschiestraat 180 1062 XK Amsterdam 1062 XK Amsterdam (NL)