Patent ID: 6870017

Claim:
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): wherein M represents a titanium atom, zirconium atom or hafnium atom in the +3 oxidation state; Cp 1 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 R 2 and R 3 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 R 2 s may bond mutually to form a ring; m represents an integer of from 0 to 4; E represents an oxygen atom or sulfur atom; R 1 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 E 1 a AlZ 3-a , (B2) cyclic aluminoxanes having a structure of the general formula {—Al(E 2 )—O—} b , and (B3) linear aluminoxanes having a structure of the general formula E 3 {—Al(E 3 )—O—} c AlE 3 2 , wherein each of E 1 , E 2 and E 3 represents a hydrocarbon group, and all E 1 s, all E 2 s or all E 3 s 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 BQ 1 Q 2 Q 3 , (C2) boron compounds of the general formula G + (BQ 1 Q 2 Q 3 Q 4 ) − , and (C3) boron compounds of the general formula (L-H) + (BQ 1 Q 2 Q 3 Q 4 ) − , wherein B represents a trivalent boron atom; Q 1 to Q 4 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.