Abstract: A process for producing a prepolymerization catalyst component which contains contacting a co-catalyst support (A), a metallocene compound (B) and an organoaluminum compound (C) to obtain a contact-treated product, and prepolymerizing an olefin in the presence of the said contact-treated product, the process containing the following steps (1), (2) and (3): step (1): a step of subjecting a saturated aliphatic hydrocarbon compound solvent containing the metallocene compound (B) to a heat treatment at 40° C. or higher; step (2): a step of subjecting the heat treatment product obtained by the heat treatment in the step (1) to a contact treatment with the co-catalyst support (A); and step (3): a step of subjecting the contact treatment product obtained by the contact treatment in the step (2) to a contact treatment with the organoaluminum compound (C).

Abstract: A catalyst component obtained by a process comprising contacting (a), (b) and (c) described below, a catalyst for addition polymerization using the catalyst component, and a process for producing an addition polymer with the catalyst for addition polymerization: (a) a compound represented by the chemical formula, BiL1r, (b) a compound represented by the chemical formula, R1s-1T1H, and (c) a compound represented by the chemical formula, R2t-2T2H2, wherein r is a numeral corresponding to a valence of Bi; L1 is a hydrogen atom, a halogen atom, a hydrocarbon group or a hydrocarbon oxy group; T1 and T2 independently represents a non-metallic atom of Group 15 or 16 of the periodic table; s represents a numeral corresponding to a valence of T1; t represents a numeral corresponding to a valence of T2; R1 is an electron-withdrawing group or an electron-withdrawing group-containing group; and R2 represents a hydrocarbon group.

Abstract: A catlyst component obtained by a process comprising contacting (a), (b) and (c) described below, a catalyst for addition polymerization using the catalyst component, and a process for producing an addition polymer with the catalyst for addition polymerization: