(19)

(11)

EP 2 493 611 A2

(12)

(88) Date of publication A3: 17.11.2011 (43) Date of publication: 05.09.2012 Bulletin 2012/36 (21) Application number: 10703747.5 (22) Date of filing: 02.02.2010

(51) International Patent Classification (IPC):  B01J 23/656(2006.01) B01J 21/16(2006.01) B01J 23/62(2006.01) (86) International application number: PCT/US2010/022954 (87) International publication number: WO 2011/056248 (12.05.2011 Gazette 2011/19)

(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: 26.10.2009 US 588727 (71) Applicant: Celanese International Corporation Dallas, TX 75234 (US)

(72) Inventors: JOHNSTON, Victor, J. Houston TX 77059 (US) CHEN, Laiyuan Houston TX 77059 (US) KIMMICH, Barbara, F. Bernardsville NJ 07924 (US) CHAPMAN, Josefina, T. Houston TX 77059 (US) ZINK, James, H. League City TX 77575 (US) WEINER, Heiko Pasadena TX 77059 (US) POTTS, John, L. Angleton TX 77515 (US) JEVTIC, Radmila TX 77058 (US) (74) Representative: Serravalle, Marco  Serravalle SAS Via Matteotti, 21/23 26854 Cornegliano Laudense (LO) 26854 Cornegliano Laudense (LO) (IT)