Patent EP0498675A2 successfully refreshed from Google Patents.
EP0498675A2
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Production of alpha-olefin polymers
Assignee: Mitsubishi Chemical Corp
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Filing: 1992-02-07
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Granted: —
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Expires: 2012-02-07
Abstract
Abstract A catalyst for α-olefin polymerization which comprises the following components (A) and (B): component (A), which is a transition metal compound represented by the formula Q(C₅H 4-m R¹ m )(C₅H 4-n R² n )MeXY wherein (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) respectively represent a conjugated five-membered ring ligand coordinating to a metal Me; R¹ and R², which may be the same or different and a plurality of each of which can be bonded together, respectively represent a hydrocarbyl group having 1 to 20 carbon atoms, a halogen atom, an alkoxy group, a silicon-containing hydrocarbyl group, a phosphorus-containing hydrocarbyl group, a nitrogen-containing hydrocarbyl group or a boron-containing hydrocarbyl group; Q represents a bonding group which crosslinks the two conjugated five-membered ring ligand; Me represents a transition metal of the IVB-VIB group in the Periodic Table; X and Y, which may be the same or different, respectively represent hydrogen, a halogen atoms, a hydrocarbyl group, an alkoxy group, an amino group, a phosphorus-containing hydrocarbyl group or a silicon-containing hydrocarbyl group; m denotes an integer of 0 ≦ m ≦ 4 and n denotes an integer of 0 ≦ n ≦ 4; component (B), which is a methylisobutylalumoxane which satisfies the following conditions (a), (b) and (c): (a) the molar ratio of a methyl group to an isobutyl group being in the range of 4:1 to 1:4, (b) the chemical shift of ²⁷Al-NMR being in the range of 160 ppm to 250 ppm and the peak having a half-height width of no smaller than 3000 Hz, and (c) it has a repeating unit of Al-O in an amount of 2 to 100. The methylisobutylalumoxane is assumed to be novel.
Inventors
- 👤 Takashi c/o Mitsubishi Petroch. Co. Ltd. Fujita
- 👤 Toshihiko c/o Mitsubishi Petro. Co. Ltd. Sugano
- 👤 Hideshi c/o Mitsubishi Petroch. Co. Ltd. Uchino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:51
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F17/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/639; C08F4/63912; C08F4/6392; C08F4/63922; C08F4/63927
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
274 words
A catalyst for α-olefin polymerization which comprises the following components (A) and (B): component (A), which is a transition metal compound represented by the formula Q(C₅H 4-m R¹ m )(C₅H 4-n R² n )MeXY wherein (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) respectively represent a conjugated five-membered ring ligand coordinating to a metal Me; R¹ and R², which may be the same or different and a plurality of each of which can be bonded together, respectively represent a hydrocarbyl group having 1 to 20 carbon atoms, a halogen atom, an alkoxy group, a silicon-containing hydrocarbyl group, a phosphorus-containing hydrocarbyl group, a nitrogen-containing hydrocarbyl group or a boron-containing hydrocarbyl group; Q represents a bonding group which crosslinks the two conjugated five-membered ring ligands; Me represents a transition metal of the IVB-VIB group in the Periodic Table; X and Y, which may be the same or different, respectively represent hydrogen, a halogen atoms, a hydrocarbyl group, an alkoxy group, an amino group, a phosphorus-containing hydrocarbyl group or a silicon-containing hydrocarbyl group; m denotes an integer of 0 ≦ m ≦ 4 and n denotes an integer of 0 ≦ n ≦ 4; component (B), which is a methylisobutylalumoxane which satisfies the following conditions (a), (b) and (c): (a) the molar ratio of a methyl group to an isobutyl group is in the range of 4:1 to 1:4, (b) the chemical shift of ²⁷Al-NMR is in the range of 160 ppm to 250 ppm and the peak has a half-height width of no smaller than 3000 Hz, and (c) it has a repeating unit of Al-O in an amount of 2 to 100.
Claim 2
Dependent Claim
31 words
The catalyst for α-olefin polymerization according to Claim 1, wherein the groups (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) of said transition metal compound are the same.
Claim 3
Dependent Claim
39 words
The catalyst for α-olefin polymerization according to Claim 1, wherein the groups (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) are selected from the group consisting of substituted or non-substituted cyclopentadienyl, indenyl and fluorenyl groups, respectively.
Claim 4
Dependent Claim
94 words
The catalyst for α-olefin polymerization according to Claim 1, wherein Q is (a) a lower alkylene group or a cycloalkylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 15 carbon atoms, (b) a silylene or oligosilylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 12 carbon atoms, and (c) a hydrocarbyl group containing therein an element selected from the group consisting of germanium, phosphorus, nitrogen, boron and aluminum.
Claim 5
Dependent Claim
68 words
The catalyst for α-olefin polymerization according to Claim 4, wherein Q is a lower alkylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 15 carbon atoms or a silylene or oligosilylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 12 carbon atoms.
Claim 6
Dependent Claim
21 words
The catalyst for α-olefin polymerization according to Claim 1, wherein Me is a transition metal of the IVB to VIB group.
Claim 7
Dependent Claim
16 words
The catalyst for α-olefin polymerization according to Claim 6, wherein Me is titanium, zirconium or hafnium.
Claim 8
Dependent Claim
26 words
The catalyst for α-olefin polymerization according to Claim 1, wherein X and Y contain 1 to 20 carbon atoms when they have a hydrocarbyl moiety, respectively.
Claim 9
Dependent Claim
90 words
The catalyst for α-olefin polymerization according to Claim 1, wherein the methylisobutylalumoxane is represented by the following formula (I) or (II): or wherein R³ and R⁴ represent a methyl group or an isobutyl group, respectively, the methyl group and the isobutyl group being arranged in block or at random in the molecule; p and q denote an integer of at least 1, respectively, the sum of p+q being in the range of 2 to 100; and the ratio of p to q is in the range of 4:1 to 1:4.
Claim 10
Dependent Claim
22 words
The catalyst for α-olefin polymerization according to Claim 9, wherein the sum of p+q is in the range of 4 to 50.
Claim 11
Dependent Claim
22 words
The catalyst for α-olefin polymerization according to Claim 9, wherein the sum of p+q is in the range of 8 to 20.
Claim 12
Dependent Claim
287 words
A process for preparing an α-olefin polymer comprising bringing an α-olefin into contact with a catalyst for α-olefin polymerization comprising the following components (A) and (B): component (A), which is a transition metal compound represented by the formula Q(C₅H 4-m R¹ m )(C₅H 4-n R² n )MeXY wherein (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) respectively represent a conjugated five-membered ring ligand coordinating to a metal Me; R¹ and R², which may be the same or different and a plurality of each of which can be bonded together, respectively represent a hydrocarbyl group having 1 to 20 carbon atoms, a halogen atom, an alkoxy group, a silicon-containing hydrocarbyl group, a phosphorus-containing hydrocarbyl group, a nitrogen-containing hydrocarbyl group or a boron-containing hydrocarbyl group; Q represents a bonding group which crosslinks the two conjugated five-membered ring ligands; Me represents a transition metal of the IVB-VIB group in the Periodic Table; X and Y, which may be the same or different, respectively represent hydrogen, a halogen atoms, a hydrocarbyl group, an alkoxy group, an amino group, a phosphorus-containing hydrocarbyl group or a silicon-containing hydrocarbyl group; m denotes an integer of 0 ≦ m ≦ 4 and n denotes an integer of 0 ≦ n ≦ 4; component (B), which is a methylisobutylalumoxane which satisfies the following conditions (a), (b) and (c): (a) the molar ratio of a methyl group to an isobutyl group is in the range of 4:1 to 1:4, (b) the chemical shift of ²⁷Al-NMR is in the range of 160 ppm to 250 ppm and the peak has a half-height width of no smaller than 3000 Hz, and (c) it has a repeating unit of Al-O in an amount of 2 to 100.
Claim 13
Dependent Claim
33 words
The process for preparing an α-olefin polymer according to Claim 12, wherein the groups (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) of said transition metal compound are the same.
Claim 14
Dependent Claim
41 words
The process for preparing an α-olefin polymer according to Claim 12, wherein the groups (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) are selected from the group consisting of substituted or non-substituted cyclopentadienyl, indenyl and fluorenyl groups, respectively.
Claim 15
Dependent Claim
96 words
The process for preparing an α-olefin polymer according to Claim 12, wherein Q is (a) a lower alkylene group or a cycloalkylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 15 carbon atoms, (b) a silylene or oligosilylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 12 carbon atoms, and (c) a hydrocarbyl group containing therein an element selected from the group consisting of germanium, phosphorus, nitrogen, boron and aluminum.
Claim 16
Dependent Claim
70 words
The process for preparing an α-olefin polymer according to Claim 15, wherein Q is a lower alkylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 15 carbon atoms or a silylene or oligosilylene group which may or may not have a substituent that is an alkyl, alicyclic and/or aromatic group and has 1 to 12 carbon atoms.
Claim 17
Dependent Claim
23 words
The process for preparing an α-olefin polymer according to Claim 12, wherein Me is a transition metal of the IVB to VIB group.
Claim 18
Dependent Claim
18 words
The process for preparing an α-olefin polymer according to Claim 17, wherein Me is titanium, zirconium or hafnium.
Claim 19
Dependent Claim
28 words
The process for preparing an α-olefin polymer according to Claim 12, wherein X and Y contain 1 to 20 carbon atoms when they have a hydrocarbyl moiety, respectively.
Claim 20
Dependent Claim
92 words
The process for preparing an α-olefin polymer according to Claim 12, wherein the methylisobutylalumoxane is represented by the following formula (I) or (II): or wherein R³ and R⁴ represent a methyl group or an isobutyl group, respectively, the methyl group and the isobutyl group being arranged in block or at random in the molecule; p and q denote an integer of at least 1, respectively, the sum of p+q being in the range of 2 to 100; and the ratio of p to q is in the range of 4:1 to 1:4.
Claim 21
Dependent Claim
24 words
The process for preparing an α-olefin polymer according to Claim 20, wherein the sum of p+q is in the range of 4 to 50.
Claim 22
Dependent Claim
24 words
The process for preparing an α-olefin polymer according to Claim 20, wherein the sum of p+q is in the range of 8 to 20.
Claim 23
Dependent Claim
72 words
A methylisobutylalumoxane which satisfies the following conditions: (a) the molar ratio of a methyl group to an isobutyl group is in the range of 4:1 to 1:4, (b) the chemical shift of ²⁷Al-NMR is in the range of 160 ppm to 250 ppm and the peak has a half-height width of no smaller than 3000 Hz, and (c) it has a repeating unit of Al-O in an amount of 2 to 100.
Claim 24
Dependent Claim
38 words
The methylisobutylalumoxane as claimed in claim 23, as combined with a compound of the group IVB to VIB of the Periodic Table having at least one π electron conjugated ligand to form a catalyst for polymerization of α-olefins.
Claim 25
Dependent Claim
191 words
The methylisobutylalumoxane as claimed in claim 24, wherein the compound of the group IVB to VIB of the Periodic Table has a formula: Q(C₅H 4-m R¹ m )(C₅H 4-n R² n )MeXY wherein (C₅H 4-m R¹ m ) and (C₅H 4-n R² n ) respectively representa conjugated five-membered ring ligand coordinating to a metal Me; R¹ and R², which may be the same or different and a plurality of each of which can be bonded together, respectively represent a hydrocarbyl group having 1 to 20 carbon atoms, a halogen atom, an alkoxy group, a silicon-containing hydrocarbyl group, a phosphorus-containing hydrocarbyl group, a nitrogen-containing hydrocarbyl group or a boron-containing hydrocarbyl group; Q represents a bonding group which crosslinks the two conjugated five-membered ring ligands; Me represents a transition metal of the IVB-VIB group in the Periodic Table; X and Y, which may be the same or different, respectively represent hydrogen, a halogen atoms, a hydrocarbyl group, an alkoxy group, an amino group, a phosphorus-containing hydrocarbyl group or a silicon-containing hydrocarbyl group; m denotes an integer of 0 ≦ m ≦ 4 and n denotes an integer of 0 ≦ n ≦ 4.
References Cited (Backward Citations)
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