EP0500944A1
Expired / Lapsed
EP
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CATALYST FOR $g(a)-OLEFIN POLYMERIZATION AND PRODUCTION OF POLY-$g(a)-OLEFIN THEREWITH
Assignee: Mitsui Chemicals Inc
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Filing: 1991-07-24
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Granted: —
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Expires: 2011-07-24
Abstract
Abstract A process for polymerizing α-olefin by using a catalytic system prepared by bringing a reaction product of a halogenated metallocene compound with an organometallic compound into contact with a compound which forms a stable anion when reacted with the reaction product. A polyolefin can be obtained at a high catalytic activity by using an inexpensive catalyst by this process.
Inventors
- 👤 Ryuichi Sugimoto
- 👤 Tadashi Asanuma
- 👤 Tutomu Iwatani
- 👤 Katsumi Takeuchi
- 👤 Osamu Uchida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:14
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/646; C08F4/647; C08F110/00; C08F110/04; C08F110/06; C08F4/619; C08F4/61908; C08F4/61912; C08F4/61916; C08F4/6192; C08F4/61922; C08F4/659; C08F4/65908; C08F4/65912; C08F4/65916; C08F4/6592; C08F4/65922; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
57 words
A method for polymerizing an α-olefin characterized by using a catalyst which is obtained by reacting a halogenated metallocene compound with an organometallic compound, and then bringing the resultant reaction product into contact with a compound which will be a stable anion by reaction with the reaction product of the halogenated metallocene compound and the organometallic compound.
Claim 2
Dependent Claim
105 words
The method according to Claim 1 wherein the halogenated metallocene compound is a compound represented by the formula (I) or (II) (wherein A and B or A' and B' may be mutually identical or different and they are unsaturated hydrocarbon residues coordinated to a central atom; R is a divalent straight-chain hydrocarbon residue which may have a side chain, or a residue in which a part or all of the carbon atoms of its straight chain may be substituted by silicon atoms, germanium atoms or tin atoms; X is a halogen atom; and M is a titanium atom, a zirconium atom or a hafnium atom).
Claim 3
Dependent Claim
34 words
The method according to Claim 1 wherein the compound which will be a stable anion is used as a solid catalyst component obtained by beforehand bringing the compound into contact with a magnesium compound.
Claim 4
Dependent Claim
25 words
The method according to Claim 1 wherein the compound which will be a stable anion is divided into two or more portions and then used.
Claim 5
Dependent Claim
32 words
The method according to Claim 1 wherein the reaction product formed by reacting the halogenated metallocene compound with an organoaluminum compound is used as a solid catalyst component supported on a carrier.
Claim 6
Dependent Claim
32 words
The method according to Claim 1 wherein as the compound which will be a stable anion, a halogenated magnesium compound having a surface area of from 30 to 300 m²/g is used.
Claim 7
Dependent Claim
39 words
The method according to Claim 1 wherein prior to the contact with the compound which will be a stable anion, the reaction product formed by reacting the halogenated metallocene compound with an organoaluminum compound is treated with an olefin.
Claim 8
Dependent Claim
112 words
The method according to Claim 1 wherein the halogenated metallocene compound is a compound represented by the formula (IV) (wherein each of E and F is a di- or tri-substituted cyclopentadienyl group having a hydrocarbon residue having 1 to 10 carbon atoms, a silyl group or a halogen atom as a substituent; R¹ and R² may be identical or different and they are bonded to silicon which is linked with the two cyclopentadienyl groups, and each of R¹ and R² is a hydrogen atom or a hydrocarbon residue having 1 to 10 carbon atoms; X is a halogen atom; and M is a titanium atom, a zirconium atom or a hafnium atom).
Claim 9
Dependent Claim
31 words
The method according to Claim 1 wherein as the compound which will be a stable anion, water-free aluminum oxide having a surface area of from 15 to 300 m²/g is used.
Claim 10
Dependent Claim
32 words
The method according to Claim 1 wherein as the compound which will be a stable anion, a magnesium halide compound having a surface area of from 1 to 25 m²/g is used.
Claim 11
Dependent Claim
152 words
The method according to Claim 1 wherein as the organometallic compound with which the halogenated metallocene compound is treated, there is used an organomagnesium compound represented by the following formula (VI) or an organoaluminum compound represented by the following formula (VII); and as the compound which will be a stable anion, there is used a reaction product of the organomagnesium compound represented by the following formula (VI) and the organoaluminum compound represented by the following formula (VII): MgR³R⁴ (VI) (wherein R³ is a hydrocarbon residue having 1 to 20 carbon atoms, and R⁴ is a hydrocarbon residue having 1 to 20 carbon atoms or a halogen atom), and R⁵R⁶AlX (VII) (wherein R⁵ and R⁶ may be identical or different and each of them is a hydrocarbon residue having 1 to 20 carbon atoms, an alkoxy group, a halogen atom, an oxygen atom or a hydrogen atom; and X is a halogen atom).
Claim 12
Dependent Claim
45 words
The method according to Claim 2 wherein the halogenated metallocene compound is represented by the formula (II) and has an asymmetric ligand in which A' and B' are different from each other, and the polymerization is carried out in the presence of an internal olefin.
Claim 13
Dependent Claim
40 words
A solid catalyst for olefin polymerization characterized by carrying a reaction product obtained by reacting a halogenated metallocene compound with an organometallic compound and a compound which will be a stable anion on a carrier treated with an organometallic compound.
Claim 14
Dependent Claim
32 words
A method for polymerizing an α-olefin characterized by carrying out the polymerization in the presence or absence of an organometallic compound by the use of the polymerization catalyst described in Claim 13.
Claim 15
Independent Claim
30 words
A method for storing a halogenated metallocene compound in the state of a solution prepared by mixing the halogenated metallocene compound with an organoaluminum compound in a hydrocarbon compound solvent.
References Cited (Backward Citations)
No citation records indexed.
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