Global Patent Index - EP 1053261 A1

EP 1053261 A1 2000-11-22 - PROCESS FOR PREPARING SUPPORTED OLEFIN POLYMERIZATION CATALYST

Title (en)

PROCESS FOR PREPARING SUPPORTED OLEFIN POLYMERIZATION CATALYST

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES TRÄGERKATALYSATORS ZUR OLEFINPOLYMERISATION

Title (fr)

PROCEDE DE PREPARATION DE CATALYSEUR DE POLYMERISATION D'OLEFINE SUPPORTE

Publication

EP 1053261 A1 (EN)

Application

EP 99900844 A

Priority

  • CA 9900028 W
  • CA 2228923 A

Abstract (en)

[origin: WO9940125A1] A catalyst which is useful in slurry or gas phase olefin polymerizations and which is prepared by depositing a combination of an organometallic complex of a group 4 metal and a so-called ionic activator on a metal oxide support. The organometallic complex is characterized by being unbridged and by having a cyclopentadienyl ligand, a phosphinimine ligand and an activatable ligand. The "ionic activator" (for example, triphenylcarbenium tetrakis (pentafluorophenyl) boron) is co-deposited with the organometallic complex. The metal oxide support is pre-treated with, for example, an aluminum alkyl in an amount which is at least equivalent to the molar concentration of surface hydroxyls on the support. The catalyst prepared by this process is highly active for ethylene polymerization.

IPC 1-7 (main, further and additional classification)

C08F 4/64; C08F 10/00

IPC 8 full level (invention and additional information)

C08F 4/64 (2006.01); C08F 4/6592 (2006.01); C08F 10/00 (2006.01); C08F 4/659 (2006.01)

CPC (invention and additional information)

C08F 10/00 (2013.01); C08F 4/65912 (2013.01); C08F 110/02 (2013.01); C08F 210/16 (2013.01)

Combination set (CPC)

  1. C08F 10/00 + C08F 4/65916
  2. C08F 10/00 + C08F 4/6592
  3. C08F 210/16 + C08F 210/08

Citation (search report)

See references of WO 9940125A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9940125 A1 19990812; AU 2042399 A 19990823; CA 2228923 A1 19990806; EP 1053261 A1 20001122; JP 2002502894 A 20020129

INPADOC legal status


2003-08-06 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030129

2002-09-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020718

2000-11-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000828

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL