Patent ID: 6344528
Filing Date: 2002-02-05
Classification: C08F,Y10S

Abstract:
A process for olefin copolymerization by copolymerizing ethylene and at least one of other &agr;-olefin in the presence of a catalyst and an organoaluminum compound, in which the catalyst is a catalyst comprising a transition metal compound represented by general formula below and aluminoxane carried on a fine particulate carrier:â€ƒ{[&eegr;-C5R65M2X32][&mgr;-&eegr;-C5R74-B-&eegr;-C5R84][&eegr;-C5R95M2X12]}wherein, &eegr;-C5R65, &eegr;-C5R74, &eegr;-C5R84, and &eegr;-C5R95 represent substituted cyclopentadienyl groups respectively;each of R6, R7, R8, and R9 independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms which may contain a silicon atom, all of R6, R7, R8, and R9 may be the same or different, respectively, and any two adjacent R6, R7, R8, and R9 may be combined to form at least one hydrocarbon ring which may contain a silicon atom around the cyclopentadienyl ring, respectively; B is a crosslinking group consisting of a hydrocarbon containing a silicon atom, its backbone chain containing at least one silicon atom and its chain length being 2 to 20 atoms; M2 represents transition metals selected from the group consisting of titanium, zirconium and hafnium, respectively; each of X3 and X4 independently represents a hydrogen atom, a halogen atom or hydrocarbon group having 1 to 20 carbon atoms.