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EP 2 906 058 A1

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(43) Date of publication: 19.08.2015 Bulletin 2015/34 (21) Application number: 13845853.4 (22) Date of filing: 10.10.2013

(51) International Patent Classification (IPC):  A24D 3/02(2006.01) A24C 5/47(2006.01) A24D 3/06(2006.01) (86) International application number: PCT/US2013/064269 (87) International publication number: WO 2014/059101 (17.04.2014 Gazette 2014/16)

(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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 11.10.2012 WO PCT/US2012/059743 13.03.2013 US 201361779232 P (71) Applicant: Celanese Acetate LLC Irving, TX 75039 (US)

(72) Inventors: KIZER, Lawton E. Blacksburg, Virginia 24060 (US) ROBERTSON, Raymond M. Blacksburg, Virginia 24060 (US) SANDERSON, William S. Blacksburg, Virginia 24060 (US) HUNT, David G. Blacksburg Virginia 24060 (US) GOU, Zeming Pearisburg, Virginia 24134 (US) MCGRADY, Christopher D. Florence, Kentucky 41042 (US) BASU, Sayanti Blacksburg, Virginia 24060 (US) (74) Representative: Lahrtz, Fritz  Isenbruck Bösl Hörschler LLP Patentanwälte Prinzregentenstrasse 68 81675 München 81675 München (DE)