EP 1049727 A1 20001108 - CATALYST SYSTEM FOR GAS PHASE POLYMERISATION OF CONJUGATED DIENES
Title (en)
CATALYST SYSTEM FOR GAS PHASE POLYMERISATION OF CONJUGATED DIENES
Title (de)
KATALYSATORSYSTEM ZUR GASPHASENPOLYMERISATION VON KONJUGIERTEN DIENEN
Title (fr)
SYSTEME DE CATALYSEUR POUR LA POLYMERISATION EN PHASE GAZEUSE DE DIENES CONJUGUES
Publication
Application
Priority
- DE 19801857 A 19980120
- EP 9900032 W 19990107
Abstract (en)
[origin: DE19801857A1] A catalyst system comprises (A) a rare earth alcoholate, carboxylate, diketone complex and/or halide adduct with an oxygen or nitrogen donor compound, (B) an aluminum trialkyl and/or dialkylaluminum hydride and/or alumoxane, (C) another Lewis acid and (D) an inert, particulate, (in)organic solid, and also a cocatalyst on an (in)organic carrier. A catalyst system comprises (A) a rare earth alcoholate (RO)3M (I), carboxylate (R-CO2)3M (II), diketone complex (R-CO-CH-CO-R)3M (III) and/or halide adduct MX3.y Donor (IV) with an oxygen (O) or nitrogen (N) donor compound, (B) an aluminum trialkyl and/or dialkylaluminum hydride Al(H)xR<1>)3-x (V) and/or alumoxane R<1>-(A(R<1>)-O)nAl(R<1>)2 (VI) or (VII), (C) another Lewis acid and (D) an inert, particulate, (in)organic solid with a BET specific surface area greater than 10 m<2>/g and a pore volume of 0.3-15 ml/g and also, if carbon black is used, a dibutyl phthalate (DBP) adsorption of 10-300 ml/100 g; and also a cocatalyst on an (in)organic carrier; R = 1-20 C alkyl; M = a trivalent rare earth element with atomic number 57-71; X = chlorine, bromine or iodine; x = 0 or 1; y = 1-6; n = 1-50; R<1> = 1-10 C alkyl. Independent claims are also included for (a) the use of carrier materials coated with cocatalysts in the gas phase polymerization of conjugated dienes; and (b) particles with a core of polybutadiene or polyisoprene and a shell of carrier coated with cocatalyst.
IPC 1-7
IPC 8 full level
C08F 2/34 (2006.01); C08F 4/02 (2006.01); C08F 4/52 (2006.01); C08F 4/54 (2006.01); C08F 36/04 (2006.01)
CPC (source: EP US)
C08F 4/52 (2013.01 - EP US); C08F 36/04 (2013.01 - EP US)
Citation (search report)
See references of WO 9937694A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19801857 A1 19990722; AU 2420099 A 19990809; CA 2318054 A1 19990729; EP 1049727 A1 20001108; JP 2002501092 A 20020115; US 6576727 B1 20030610; WO 9937694 A1 19990729
DOCDB simple family (application)
DE 19801857 A 19980120; AU 2420099 A 19990107; CA 2318054 A 19990107; EP 9900032 W 19990107; EP 99903606 A 19990107; JP 2000528610 A 19990107; US 60028300 A 20000713