CATALYST FOR OLEFIN POLYMERIZATION, PROCESS FOR OLEFIN POLYMERIZATION USING THE SAME, ETHYLENE/ALPHA-OLEFIN COPOLYMER, GRAFT MODIFIED ETHYLENZ ALPHA-OLEFIN COPOLYMZR, AND ETHYLENE COPO

摘要

(a) organic aluminum oxy-compounds (component (a)), (bI) specific transition metal compounds (component (bI)) specific transition metal compounds (component (b-II)) and, if necessary, (c) organoaluminum compounds A catalyst for olefin polymerization composed of (component (c)).;A solid catalyst (component) and an olefin polymerization catalyst comprising component (d) as necessary, the solid catalyst (component) may be a carrier, component (a), component (bI), component (b-II) and, if necessary, Component (c), all of which are supported on a carrier.;An olefin polymerization catalyst comprising a prepolymerized catalyst and, if necessary, component (d), which is obtained by prepolymerizing the solid catalyst component with olefin.;The olefin polymerization method which polymerizes an olefin in presence of any catalyst in the said olefin polymerization catalyst.;Ethylene / α-olefin copolymer obtained by copolymerizing ethylene with an α-olefin having 3 to 20 carbon atoms in the presence of an olefin polymerization catalyst composed of an organoaluminumoxy-compound (a) and at least two transition metal compounds (b). This ethylene / α-olefin copolymer has high melt tension and fluidity.;A graft modified ethylene / α-olefin copolymer obtained by graft polymerization of the ethylene / α-olefin copolymer with a polar monomer.;Ethylene copolymer composition comprising the graft modified ethylene / α-olefin copolymer and polyolefin.;The olefin polymer having high melt tension and good fluidity can be prepared using the olefin polymerization catalyst or the olefin polymerization method according to the present invention.;The ethylene / α-olefin copolymer of the present invention is excellent in moldability. With this copolymer, a film having high transparency and high mechanical strength can be produced.;The graft modified ethylene / α-olefin copolymer of the present invention is excellent in thermal stability and moldability. This copolymer can produce a film having high transparency and good adhesion with high polar materials.;The ethylene copolymer composition of the present invention is excellent in thermal stability and moldability. This composition can produce a film having high transparency and good adhesion to high polar materials.