(19)
(11) EP 1 995 258 A8

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

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
30.06.2010 Bulletin 2010/26

(88) Date of publication A3:
10.12.2008 Bulletin 2008/50

(43) Date of publication:
26.11.2008 Bulletin 2008/48

(21) Application number: 08015534.4

(22) Date of filing: 24.03.1999
(51) International Patent Classification (IPC): 
C08F 4/642(2006.01)
C08F 10/00(2006.01)
 C08F 4/02(2006.01)
(84) Designated Contracting States:
BE DE ES FI FR GB IT NL

(30) Priority: 18.05.1998 US 80619
18.05.1998 US 80629

(62) Application number of the earlier application in accordance with Art. 76 EPC:
99914999.0 / 1082355

(71) Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
The Woodlands, TX 77380 (US)

(72) Inventors:
  • McDaniel, Max P.
    Bartlesville Oklahoma 74006 (US)
  • Benham, Elizabeth A.
    Bartlesville Oklahoma 74006 (US)
  • Martin, Shirley J.
    Bartlesville Oklahoma 74006 (US)
  • Collings, Kathy S.
    Bartlesville Oklahoma 74006 (US)
  • Johnson, Marvin M.
    Bartlesville Oklahoma 74006 (US)
  • Smith, James L.
    Bartlesville Oklahoma 74006 (US)
  • Hawley, Gil R.
    Dewey Oklahoma 74029 (US)
  • Wittner, Christopher E.
    Bartlesville Oklahoma 74006 (US)
  • Jensen, Michael D.
    laurel, Maryland 20723 (US)

(74) Representative: Stevens, Ian Edward et al
Potter Clarkson LLP Park View House 58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB)

 
Remarks:
This application was filed on 03-09-2008 as a divisional application to the application mentioned under INID code 62.
 


(54) Catalyst composition for polymerizing monomers


(57) This invention provides compositions that are useful for polymerizing at least one monomer comprising: 1) a treated solid oxide compound produced by contacting at least one solid oxide with at least one electron-withdrawing anion source, 2) a metallocene compound of group IVA, 3) an organoaluminium compound.