Transition metal compound, catalyst for addition polymerization, and process for producing addition polymer

A catalyst for addition polymerization obtained by a process comprising bringing the following (A) into contact with the following (B) and/or the following (C):

• (A) a transition metal compound represented by the general formula (3):
• 8
• wherein M represents a titanium atom, zirconium atom or hafnium atom in the +3 oxidation state;
• Cp1 represents a group having a cyclopentadiene type anion skeleton;
• J represents an atom of XIV group in the Periodic Table of the Elements;
• each of R2 and R3 independently represents a hydrogen atom, halogen atom, alkyl group, aralkyl group, aryl group, substituted silyl group, alkoxy group, aralkyloxy group, aryloxy group or di-substituted amino group, and a plurality of R2S may bond mutually to form a ring;
• m represents an integer of from 0 to 4;
• E represents an oxygen atom or sulfur atom;
• R1 represents an alkyl group, aralkyl group, aryl group or substituted silyl group;
• each of two Xs independently represents a hydrogen atom, halogen atom, alkyl group, aralkyl group, aryl group, substituted silyl group, alkoxy group, aralkyloxy group, aryloxy group or di-substituted amino group, and two Xs may bond mutually to form a ring;
• D represents a neutral ligand coordinated on M;
• and n represents an integer of from 0 to 2,
• (B) one or more aluminum compounds selected from the following (B1) to (B3):
• (B1) organic aluminum compounds of the general formula E1aAlZ3-a,
• (B2) cyclic aluminoxanes having a structure of the general formula {—Al(E2)—O—}b, and
• (B3) linear aluminoxanes having a structure of the general formula E3{—Al(E3)—O—}cAlE32,
• wherein each of E1, E2 and E3 represents a hydrocarbon group, and all E1s, all E2s or all E3s may be the same or different;
• Z represents a hydrogen atom or halogen atom and all Zs may be the same or different;
• a represents a number satisfying 0<a≦3, b represents an integer of 2 or more;
• and c represents an integer of 1 or more,
• (C) one or more boron compounds selected from the following (C1) to (C3):
• (C1) boron compounds of the general formula BQ1Q2Q3,
• (C2) boron compounds of the general formula G+(BQ1Q2Q3Q4)−, and
• (C3) boron compounds of the general formula (L-H)+(BQ1Q2Q3Q4)−,
• wherein B represents a trivalent boron atom;
• Q1 to Q4 represent a halogen atom, hydrocarbon group, halogenated hydrocarbon group, substituted silyl group, alkoxy group or di-substituted amino group and they may be the same or different;
• G+ represents an inorganic or organic cation;
• L represents a neutral Lewis base;
• and (L-H)+ represents a Bronsted acid.