(19)
(11) EP 2 578 606 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:
01.06.2016 Bulletin 2016/22

(45) Mention of the grant of the patent:
17.02.2016 Bulletin 2016/07

(21) Application number: 11008015.7

(22) Date of filing: 04.10.2011
(51) International Patent Classification (IPC): 
C08F 6/00(2006.01)
C08F 297/08(2006.01)
C08F 6/02(2006.01)
 C08F 10/00(2006.01)
C08J 3/22(2006.01)
C08K 3/00(2006.01)

(54)

Process for the production of polyolefins wherein an antioxidant is fed to the reaction mixture during the process

Verfahren zur Herstellung von Polyolefinen, wobei ein Antioxidationsmittel während des Verfahrens dem Reaktionsgemisch zugeführt wird

Procédé de production de polyoléfines dans lesquels un antioxydant est alimenté en mélange à réaction durant le procédé

(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

(43) Date of publication of application:
10.04.2013 Bulletin 2013/15

(73) Proprietor: Borealis AG
1220 Vienna (AT)

(72) Inventors:
  • Bergstra, Michiel
    2600 Berchem (BE)
  • Eriksson, Erik
    444 54 Stenungsund (SE)
  • Hagstrand, Per-Ola
    44446 Stenungsund (SE)
  • Anker, Martin
    42543 Hisings Kärra (SE)
  • Vahteri, Markku
    06100 Porvoo (FI)
  • Fosse, Knut
    3711 Skien (NO)

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


(56) References cited: : 
EP-A1- 1 849 819
EP-A1- 2 348 058
WO-A1-2011/057927
 EP-A1- 2 072 203
EP-A2- 0 198 644
   
  • N. KAWAMOTO: "Novel stabilization system for polypropylene via the Ziegler-Natta catalysed polymerisation in the presence of aluminium aryloxide", J. APPL. POLYMER SCI., vol. 99, 2006, pages 1350-1358, XP008144018,
   
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).