(19)

(11)

EP 2 467 453 A2

(12)

(88) Date of publication A3: 16.06.2011 (43) Date of publication: 27.06.2012 Bulletin 2012/26 (21) Application number: 10810582.6 (22) Date of filing: 19.08.2010

(51) International Patent Classification (IPC):  C10G 9/16(2006.01) C07C 4/04(2006.01) C09K 3/00(2006.01) (86) International application number: PCT/US2010/045965 (87) International publication number: WO 2011/022529 (24.02.2011 Gazette 2011/08)

(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 SE SI SK SM TR (30) Priority: 16.08.2010 US 857216 21.08.2009 US 235957 P (71) Applicant: Baker Hughes Incorporated Houston, TX 77019-2118 (US)	(72) Inventors: STARK, Joseph, L. Richmond TX 77406 (US) FALKER, Thomas, J. Missouri City TX 77459 (US) (74) Representative: Hoffmann, Benjamin  Dehns St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)