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EP 2 493 607 A1

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(43) Date of publication: 05.09.2012 Bulletin 2012/36 (21) Application number: 10702811.0 (22) Date of filing: 02.02.2010

(51) International Patent Classification (IPC):  B01J 21/16(2006.01) B01J 23/62(2006.01) B01J 23/656(2006.01) C07C 31/08(2006.01) B01J 23/00(2006.01) B01J 23/652(2006.01) C07C 29/149(2006.01) (86) International application number: PCT/US2010/022949 (87) International publication number: WO 2011/053366 (05.05.2011 Gazette 2011/18)

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