| abstract |
(57) [Summary] [Structure] [A] A metallocene-based transition metal compound and [B] a silicate having a water content of 3% by weight or less obtained by treatment with a salt and / or an acid. An olefin polymerization catalyst containing, as an essential component, at least one compound selected from the group consisting of ion-exchangeable layered compounds other than (2) and inorganic silicates. [Effect] According to the catalyst of the present invention and the polymerization method using the same, it is possible to obtain extremely high polymerization activity not only per transition metal and per Al but also per solid component in the polymerization of olefin. It is not necessary to remove the catalyst residue from the polymer and is industrially useful. Also, The polymer obtained by using the specific salt treatment has excellent melt tension and improved moldability. |