Patent ID: 6184319
Filing Date: 2001-02-06
Classification: B01J,C07F,C08F,C08J

Abstract:
A method for producing an olefin polymer, comprising the step of homopolymerizing an olefin or copolymerizing two or more olefins at a temperature of at least 130.degree. C. under a pressure of at least 300 kg/cm.sup.2 G with a catalyst for olefin polymerization, comprising the following (A), (B) and (C); (A) and (B); or (A) and (C):(A) a transition metal complex represented by the following general formula (I): ##STR5##wherein M.sup.1 represents a transition metal atom of Group IV of the Periodic Table of the Elements; A representsents an atom of Group XVI of the Periodic Table of the Elements; J represents an atom of Group XIV of the Periodic Table of the Elements; Cp.sup.1 represents a group having a cyclopentadiene anion skeleton; X.sup.1, X.sup.2, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently represent a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an aryl group, a substituted silyl group, an alkoxy group, an aralkyloxy group, an aryloxy group or a di-substituted amino group; and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be optionally combined with each other to form a ring;(B) at least one aluminum compound selected from the following (B1) to (B3):(B1) an organoaluminum compound represented by the general formula E.sup.1.sub.a AlZ.sub.3-a ;(B2) a cyclic aluminoxane having a structure represented by the general formula (Al(E.sup.2)--O--).sub.b ; and(B3) a linear aluminoaxe having a structure represented by the general formula E.sup.3 (--Al(E.sup.3)--O--).sub.c AlE.sup.3.sub.2,wherein E.sup.1, E.sup.2 an E.sup.3 respectively represents a hydrocarbon group, all of E.sup.1, E.sup.2 and E.sup.3 may be the same or different, Z represents a hydrogen atom or a halogen atom, and all of Z may be the same or different, a represents a numeral of 0 to 3, b represents an integer of not less than 2, and c represents an integer of not less than 1, and(C) a boron compound of any one of the following (C1) to (C3):(C1) a boron compound represented by the general formula BQ.sup.1 Q.sup.2 Q.sup.3 ;(C2) a boron compound represented by the general formula G.sup.+ (BQ.sup.1 Q.sup.2 Q.sup.3 Q.sup.4).sup.- ; and(C3) a boron compound represented by the general formula (L--H).sup.+ (BQ.sup.1 Q.sup.2 Q.sup.3 Q.sup.4).sup.-,wherein B represents a boron atom in the trivalent valence state, Q.sup.1 to Q.sup.4 may be the same or different and represent a halogen atom, a hydrocarbon group, a halogenated hydrocarbon group, a substituted silyl group, an alkoxy group or a di-substituted amino group, G.sup.+ represents an inorganic or organic cation, L represents a neutral Lewis base, and (L--H).sup.+ represents a Br.o slashed.nsted acid.