(19)
(11) EP 2 992 135 A1

(12)

(43) Date of publication:
09.03.2016 Bulletin 2016/10

(21) Application number: 14728768.4

(22) Date of filing: 02.05.2014
(51) International Patent Classification (IPC): 
D21C 3/20(2006.01)
D21C 9/02(2006.01)
 D21C 9/00(2006.01)
D21C 11/00(2006.01)
(86) International application number:
PCT/US2014/036597
(87) International publication number:
WO 2014/179702 (06.11.2014 Gazette 2014/45)
(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: 03.05.2013 US 201361819150 P
06.08.2013 US 201361862917 P
06.08.2013 US 201361862914 P
04.09.2013 US 201361873764 P
29.01.2014 US 201461933203 P

(71) Applicant: Celanese International Corporation
Irving, TX 75039 (US)

(72) Inventors:
  • FALLON, Denis
    Blacksburg, Virginia 24060 (US)
  • LI, Bin
    Blacksburg, VA 24060 (US)
  • LI, Rongfu
    Blacksburg, VA 24060 (US)
  • MEHTA, Jay
    Blacksburg, Virginia 24060 (US)
  • PAN, Tianshu
    Charlotte, North Carolina 28277 (US)
  • SHER, Jaimes
    Irving, Texas 75039 (US)
  • ALLEN, Leslie
    Blacksburg, Virginia 24060 (US)
  • ARORA, Dinesh
    League City, Texas 77573 (US)
  • BOATWRIGHT, Monica
    Roanoke, VA 24014 (US)
  • BUNDREN, Christopher M.
    Blacksburg, Virginia 24060 (US)
  • COMBS, Michael
    Pembroke, VA 24136 (US)

(74) Representative: Lahrtz, Fritz 
Isenbruck Bösl Hörschler LLP Patentanwälte Prinzregentenstrasse 68
81675 München
81675 München (DE)

   


(54) INTEGRATED PROCESSES FOR PURIFYING A CELLULOSIC MATERIAL