(19)
(11) EP 3 253 728 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
07.04.2021 Bulletin 2021/14

(45) Mention of the grant of the patent:
25.11.2020 Bulletin 2020/48

(21) Application number: 15784200.6

(22) Date of filing: 02.10.2015
(51) International Patent Classification (IPC): 
C07C 51/12(2006.01)
C07C 51/48(2006.01)
B01D 3/00(2006.01)
B01D 17/02(2006.01)
 C07C 51/44(2006.01)
C07C 53/08(2006.01)
B01D 3/40(2006.01)
(86) International application number:
PCT/US2015/053758
(87) International publication number:
WO 2016/126292 (11.08.2016 Gazette 2016/32)

(54)

PROCESS TO CONTROL HI CONCENTRATION IN RESIDUUM STREAM

VERFAHREN ZUR STEUERUNG DER HI-KONZENTRATION IN RÜCKSTANDSDURCHFLUSS

PROCÉDÉ POUR RÉGULER LA CONCENTRATION DE HI DANS UN COURANT DE RÉSIDU

(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

(30) Priority: 04.02.2015 US 201562112120 P
28.05.2015 US 201514724197

(43) Date of publication of application:
13.12.2017 Bulletin 2017/50

(73) Proprietor: Celanese International Corporation
Dallas, TX 75234 (US)

(72) Inventors:
  • SCATES, Mark O.
    Houston, Texas 77058 (US)
  • SHAVER, Ronald David
    Houston, Texas 77059 (US)
  • LIU, Yaw-Haw
    Missouri City, Texas 77459 (US)

(74) Representative: Kador & Partner PartG mbB 
Corneliusstraße 15
80469 München
80469 München (DE)


(56) References cited: : 
JP-A- 2000 072 712
US-A1- 2006 247 466
 US-A1- 2005 197 508
US-A1- 2013 281 735
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).