EP 1053261 A1 20001122 - 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
Application
Priority
- CA 9900028 W 19990118
- CA 2228923 A 19980206
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
IPC 8 full level
C08F 4/64 (2006.01); C08F 4/6592 (2006.01); C08F 10/00 (2006.01); C08F 4/659 (2006.01)
CPC (source: EP)
C08F 10/00 (2013.01); C08F 4/65912 (2013.01); C08F 110/02 (2013.01); C08F 210/16 (2013.01)
Citation (search report)
See references of WO 9940125A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9940125 A1 19990812; AU 2042399 A 19990823; CA 2228923 A1 19990806; EP 1053261 A1 20001122; JP 2002502894 A 20020129
DOCDB simple family (application)
CA 9900028 W 19990118; AU 2042399 A 19990118; CA 2228923 A 19980206; EP 99900844 A 19990118; JP 2000530552 A 19990118