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(11)

EP 1 694 437 A1

(12)

(43) Date of publication: 30.08.2006 Bulletin 2006/35 (21) Application number: 04811517.4 (22) Date of filing: 19.11.2004

(51) International Patent Classification (IPC):  B01J 23/66(2006.01) B01J 37/02(2006.01) B01J 35/08(2006.01) B01J 37/00(2006.01) B01J 37/16(2006.01) (86) International application number: PCT/US2004/038814 (87) International publication number: WO 2005/065821 (21.07.2005 Gazette 2005/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 19.12.2003 US 530936 P (71) Applicant: Celanese International Corporation Dallas, Texas 75381 (US)	(72) Inventors: WANG, Tao Houston, TX 77059 (US) WADE, Leslie, E. Houston, TX 77258 (US) WONG, Victor San Jose, CA 95148 (US) SOKOLOVSKII, Valery Sunnyvale, CA 94086 (US) (74) Representative: Kirsch, Susan Edith  Carpmaels & Ransford 43 Bloomsbury Square LONDON WC1A 2RA LONDON WC1A 2RA (GB)