Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
232 words
A catalyst for polymerization, comprising (A) a metallocene compound, (B) an organoaluminum compound, and (C) a metal borate or a metal aluminate: the metallocene compound (A) being represented by the general formula (1) below: ##STR3## where Cp 1 and Cp 2 are independently a substituted or unsubstituted cyclopentadienyl group; R 1 is an alkylene group, an arylalkylene group, dialkylsilylene group, dialkylgermanylene group, an alkylphosphinediyl group, or an alkylimino group having 1 to 20 carbons, R 1 crosslinking Cp 1 and Cp 2 together; m is 0 or 1; M is titanium, zirconium, or hafnium; and R 2 and R 3 are independently hydrogen, halogen, or a hydrocarbon group, an alkoxy group, or an aryloxy group having 1 to 12 carbons, the organic aluminum compound (B) being represented by the general formula (2) below: AlR.sup.4.sub.3 ( 2) where each R 4 is independently hydrogen, an alkyl group, an alkoxy group, or an aryl group, at least one R 4 being an alkyl group, and the metal borate or the metal aluminate (C) being represented by the general formula (3): (C(L).sub.n).sub.b (A).sub.d ( 3) where C is an alkali metal cation or an alkaline earth metal cation; L is a Lewis base; A is an anion having elemental boron or elemental aluminum; n is an integer of from 1 to 6; b and d are respectively an integer selected to balance the electric charge.
Claim 2
Dependent Claim
232 words
A catalyst for polymerization, comprising (A) a metallocene compound, (B) an organoaluminum compound, and (C) a metal borate or a metal aluminate: the metallocene compound (A) being represented by the general formula (1) below: ##STR3## where Cp 1 and Cp 2 are independently a substituted or unsubstituted cyclopentadienyl group; R 1 is an alkylene group, an arylalkylene group, dialkylsilylene group, dialkylgermanylene group, an alkylphosphinediyl group, or an alkylimino group having 1 to 20 carbons, R 1 crosslinking Cp 1 and Cp 2 together; m is 0 or 1; M is titanium, zirconium, or hafnium; and R 2 and R 3 are independently hydrogen, halogen, or a hydrocarbon group, an alkoxy group, or an aryloxy group having 1 to 12 carbons, the organic aluminum compound (B) being represented by the general formula (2) below: AlR.sup.4.sub.3 ( 2) where each R 4 is independently hydrogen, an alkyl group, an alkoxy group, or an aryl group, at least one R 4 being an alkyl group, and the metal borate or the metal aluminate (C) being represented by the general formula (3): (C(L).sub.n).sub.b (A).sub.d ( 3) where C is an alkali metal cation or an alkaline earth metal cation; L is a Lewis base; A is an anion having elemental boron or elemental aluminum; n is an integer of from 1 to 6; b and d are respectively an integer selected to balance the electric charge.
Claim 3
Dependent Claim
9 words
The catalyst of claim 1, wherein n is 1.
Claim 4
Dependent Claim
13 words
The catalyst of claim 1, wherein said Lewis base is an ether compound.
Claim 5
Dependent Claim
11 words
The catalyst of claim 1, wherein said Lewis base is tetrahydrofuran.
Claim 6
Dependent Claim
12 words
The catalyst of claim 1, wherein said Lewis base is diethyl ether.
Claim 7
Dependent Claim
12 words
The catalyst of claim 2, wherein said Lewis base is diethyl ether.
Claim 8
Dependent Claim
18 words
The catalyst of claim 1, wherein R 1 is an alkylene group having 1 to 20 carbon atoms.
Claim 9
Dependent Claim
9 words
The catalyst of claim 1, wherein M is zirconium.
Claim 10
Dependent Claim
12 words
The catalyst of claim 1, wherein component (C) is a metal borate.
Claim 11
Dependent Claim
12 words
The catalyst of claim 6, wherein component (C) is a metal borate.
Claim 12
Dependent Claim
12 words
The catalyst of claim 1, wherein component (C) is a metal aluminate.
Claim 13
Dependent Claim
12 words
The catalyst of claim 6, wherein component (C) is a metal aluminate.
Claim 14
Dependent Claim
53 words
The catalyst of claim 1, wherein said metallocene compound is selected from the group consisting of ethylenebis(indenyl)-zirconium dichloride and isopropylidene(cyclopentadienyl-1-fluorenyl)zirconium dichloride, said organoaluminum compound is triisobutylaluminum and said component (C) is selected from the group consisting of the diethyl ether complex of lithium tetrakis(pentafluorophenyl)borate and the diethyl ether complex of lithium tetrakis(pentafluorophenyl) aluminate.