Metallocene catalysts for olefin or styrene polymerization and polymerization method using the metallocene catalysts
The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound which a transition metal is coordinated with a main ligand such as cycloalkanedienyl group and an ancillary ligand. The functional groups of the compound having at least two functional groups are selected from the group consisting of a hydroxy group, a thiol group, a primary amine group, a secondary amine group, etc. The metallocene catalysts according to the present invention have a structure which an ancillary ligand of a metallocene compound is bonded with functional groups. A structure of the metallocene catalysts can be varied according to the metallocene compounds, the compound having at least two functional groups, and the molar ratio of each reactant. The metallocene catalyst is employed with a co-catalyst for styrene and olefin polymerization. The co-catalyst is an organometallic compound and a mixture of non-coordinated Lewis acid and alkylaluminium. The organometallic compound is usually alkylaluminoxane and organoaluminium compound. The syndiotactic polystyrenes and the polyolefins having good physical properties are prepared by using the metallocene catalyst according to the present invention. A monomer for polymerization includes styrene, derivatives of styrene, and a compound having ethylenically unsaturated double bonds. Those compounds are homopolymerized and copolymerized to give polystyrene and polyolefin.
1. A method of polymerization comprising contacting monomers selected from the group consisting of styrene, derivatives of styrene, and ethylenically unsaturated compounds with a catalyst system wherein said catalyst system comprises a co-catalyst and a catalyst prepared by reacting a metallocene compound represented by the general formulae:
M R 1 a R 2 b R 3 c R 4 4−(a+b+c) (A)
or
M R 1 d R 2 e R 3 3−(d+e) (B)
with a compound having at least two functional groups represented by the general formulae (C) or (D):
T 2 -YR 5 Y′-T 1 (C)
wherein M in the formulae (A) and (B) represents a transition metal of group IV, V or VI of the periodic Table of the Elements;
R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-20 , an aryl group, an alklyaryl group, an arylalkyl group of C 6-20 , a substituted or unsubstituted cyclopentadienyl group or derivatives thereof, a substituted or unsubstituted indenyl group or derivatives thereof, and a substituted or unsubstituted fluorenyl group or derivatives thereof, wherein at least one of R 1 , R 2 , R 3 , and R 4 is a substituted or unsubstituted cyclopentadienyl group or derivatives thereof, a substituted or unsubstituted indenyl group or derivatives thereof, and a substituted or unsubstituted fluorenyl group or derivatives thereof;
a, b, and c are integers from 0 to 4; and
d and e are integers from 0 to 3;
wherein T 1 , T 2 , and T 3 in the formulae (C) and (D) are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-20 , an aryl group, an alklyaryl group, an arylalkyl group of C 6-20 , and an alkali metal;
Y, Y′, and Y″ are selected from the group consisting of O, S, —Nr 17 , and —Pr 18 , wherein r 17 and r 18 are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an alklyaryl group, and an arylalkyl group of C 6-20 ;
R 5 , R 6 , and R 7 are selected from the group consisting of R′, R′-m-R″, and
wherein R′, R″, R″′, and R″″ are selected from the group consisting of a linear alkylene group, a branched alkylene group of C 6-20 , a cycloalkylene group, a substituted cycloalkylene group of C 3-20 , an arylene group, an alkylarylene group, and an arylalkylene group of C 6-40 ; and r 19 is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alklyaryl group, or an arylalkyl group of C 6-20 ; and m is selected from the group consisting of an oxygen atom, a sulfur atom, —Nr 17 , —Pr 18 , and Sir 17 r 18 , wherein r 17 and r 18 are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alkyl group, and an arylalkyl group of C 6-20 ; and
Q is N or —Cr 20 wherein r 20 is selected from the group consisting of an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alklyaryl group, and an arylalkyl group of C 6-20 ;
wherein said step of contacting monomers comprises reacting the metallocene compound and the compound having at least two fictional groups in a polymerization reactor being filled with said monomers and adding said co-catalyst to the polymerization reactor.
2. A method of polymerization comprising contacting monomers selected from the group consisting of styrene, derivatives of styrene, and ethylenically unsaturated compounds with a catalyst system wherein said catalyst system comprises a co-catalyst and a catalyst prepared by reacting a metallocene compound represented by the general formulae:
M R 1 a R 2 b R 3 c R 4 4−(a+b+c) (A)
or
M R 1 d R 2 e R 3 3−(d+e) (B)
with a compound having at least two functional groups represented by the general formulae (C) or (D):
T 2 -YR 5 Y′-T (C)
wherein M in the formulae (A) and (B) represents a transition metal of group IV, V or VI of the periodic Table of the Elements;
R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-20 , an aryl group, an alkylaryl group, an arylalkyl group of C 6-20 , a substituted or unsubstituted cyclopentadienyl group or derivatives thereof, a substituted or unsubstituted indenyl group or derivatives thereof, and a substituted or unsubstituted fluorenyl group or derivatives thereof, wherein at least one of R 1 , R 2 , R 3 , and R 4 is a substituted or unsubstituted cyclopentadienyl group or derivatives thereof, a substituted or unsubstituted indenyl group or derivatives thereof, and a substituted or unsubstituted fluorenyl group or derivatives thereof;
a, b, and c are integers from 0 to 4; and
d and e are integers from 0 to 3;
wherein T 1 , T 2 , and T 3 in the formulae (C) and (D) are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-20 , an aryl group, an alkylaryl group, an arylalkyl group of C 6-20 , and an alkali metal;
Y, Y′, and Y″ are selected from the group consisting of O, S, —Nr 17 , and —Pr 18 , wherein r 17 and r 18 are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an alkylaryl group, and an arylalkyl group of C 6-20 ;
R 5 , R 6 , and R 7 are selected from the group consisting of R′, R′-m-R″, and
wherein R′, R″, R′″, and R″″ are selected from the group consisting of a linear alkylene group, a branched alkylene group of C 6-20 , a cycloalkylene group, a substituted cycloalkylene group of C 3-20 , an arylene group, an alkylarylene group, and an arylalkylene group of C 6-40 ; and r 19 is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alkylaryl group, or an arylalkyl group of C 6-20 ; and m is selected from the group consisting of an oxygen atom, a sulfur atom, —Nr 17 , —Pr 18 , and Sir 17 r 18 , wherein r 17 and r 18 are selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alkyl group, and an arylalkyl group of C 6-20 ; and
Q is N or —Cr 20 wherein r 20 is selected from the group consisting of an alkyl group, a cycloalkyl group, an alkoxy group of C 1-10 , an aryl group, an alkylaryl group, and an arylalkyl group of C 6-20 .