| abstract |
The present invention relates to a method for producing a copolymer of ethylene / propylene / diene by solution polymerization, more specifically, using a catalyst of the transition metal coordination compound, the main component is a copolymer consisting of ethylene, propylene, diene monomer For the components and properties of the copolymer are as follows.n n n (a) The content of ethylene in the copolymer is from 30 wt.% to 80 wt.%n n n (b) the content of propylene in the copolymer is from 20wt.% to 60wt.%n n n (c) the diene content in the copolymer is 0wt.% to 15wt.%n n n The catalyst composition provided in the present invention includes a transition metal catalyst and an aluminoxane, or a boron or aluminum compound containing at least one anionic ligand having a cyclopentadiene derivative and an aryloxy group substituted with an aryl derivative at an ortho- position. It provides a polymerization method having a high activity and excellent reactivity with ethylene, propylene and diene compounds as a catalyst system using the as an activator.n n n Ethylene and Propylene and Diene Copolymers, EPDM, Transition Metal Catalyst Compositions, Preparation Methods |