| abstract |
(57) Abstract: [PROBLEMS] To provide a catalyst and a polymerization method capable of producing an ethylene polymer having excellent melt characteristics such as melt tension and Swell, particularly, processing characteristics during blow molding. At least one conjugated [A] five-membered ring ligand is used. 4B to 6B transition metal compound having periodic table, and [B] 1B cation of transition metal atom of 4B to 6B periodic table, and halogen atom, anion of inorganic acid and organic acid An essential component is a compound selected from the group consisting of (1) ion-exchangeable layered compounds excluding silicate and (2) inorganic silicate having a water content of 3% by weight or less, which is obtained by treatment with a compound. Ethylene polymerization catalyst and method for producing ethylene polymer using this catalyst. |