(19)

(11)

EP 2 404 040 A1

(12)

(43) Date of publication: 11.01.2012 Bulletin 2012/02 (21) Application number: 10705612.9 (22) Date of filing: 02.03.2010

(51) International Patent Classification (IPC):  F01M 11/00(2006.01) (86) International application number: PCT/EP2010/052581 (87) International publication number: WO 2010/100124 (10.09.2010 Gazette 2010/36)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 04.03.2009 EP 09154309 (71) Applicant: DSM IP Assets B.V. 6411 TE Heerlen (NL)	(72) Inventors: SIEPEL, Harm NL-7811 XZ Emmen (NL) KNAPEN, Petrus, Lambertus NL-6181 KJ Elsloo (NL) (74) Representative: Dorrestijn, Antoon  DSM Intellectual Property Urmond Office P.O. Box 4 6100 AA Echt 6100 AA Echt (NL)