Patent EP0049436A1 successfully refreshed from Google Patents.
EP0049436A1
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EP
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Process for producing highly stereoregular alpha-olefin polymers
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1981-09-25
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Granted: —
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Expires: 2001-09-25
Abstract
Abstract A process for producing highly stereoregular a-olefin polymers which comprises polymerizing a-olefins in the presence of a catalvst system comprising: (A) a solid catalyst obtained by contact reaction between (a) a solid product prepared by reacting an organo-magnesium compound with at least one of halogenated silicon compound (I) and halogenated aluminum compound, and (b) a titanium compound having both titanium-aryloxy and titanium-halogen linkages, and (B) an organometallic compound of a metal in Groups I to III of the periodic table as an activating agent.
Inventors
- 👤 Akinobu Shiga
- 👤 Yukio Naito
- 👤 Toshio Sasaki
- 👤 Junpei Kojima
- 👤 Hiroshi Yoshioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:40
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
192 words
1 . A process for producing a-olefin polymers of high stereoregularity which comprises polymerizing an a-olefin having not less than three carbon atoms or copolymerizing said a-olefin with another olefin having not less than two carbon atoms in the presence of a catalyst system comprising: (A) a solid catalyst obtained by contact reaction between (a) a solid product prepared by reaction of an organo-magnesium compound with at least one of the following halogen-containing compounds (I) and (II), (I) halogenated silicon compounds of the formula, R n SiX 4-n , in which R is a hydrocarbon group having 1 to 8 carbon atoms, X is a halogen atom and n is a number satisfying 0 < n < 4, (II) halogenated aluminum compounds of the formula R ℓ AlX 3-ℓ , in which R is a hydrocarbon group having 1 to 8 carbon atoms, X is a halogen atom and I is a number satisfying 0 < i < 3, and (b) a titanium compound having both titanium- aryloxy and titanium-halogen linkages, and (B) an organometallic compound of a metal in Groups I to III of the periodic table as an activating agent.
Claim 2
Dependent Claim
192 words
1 . A process for producing a-olefin polymers of high stereoregularity which comprises polymerizing an a-olefin having not less than three carbon atoms or copolymerizing said a-olefin with another olefin having not less than two carbon atoms in the presence of a catalyst system comprising: (A) a solid catalyst obtained by contact reaction between (a) a solid product prepared by reaction of an organo-magnesium compound with at least one of the following halogen-containing compounds (I) and (II), (I) halogenated silicon compounds of the formula, R n SiX 4-n , in which R is a hydrocarbon group having 1 to 8 carbon atoms, X is a halogen atom and n is a number satisfying 0 < n < 4, (II) halogenated aluminum compounds of the formula R ℓ AlX 3-ℓ , in which R is a hydrocarbon group having 1 to 8 carbon atoms, X is a halogen atom and I is a number satisfying 0 < i < 3, and (b) a titanium compound having both titanium- aryloxy and titanium-halogen linkages, and (B) an organometallic compound of a metal in Groups I to III of the periodic table as an activating agent.
Claim 3
Dependent Claim
54 words
A process according to Claim 1, wherein the solid catalyst is one obtained by contact treatment of the solid product (a) with an electron donor, followed by contact reaction with the titanium compound (b), or by contact reaction of the solid product (a) with a mixture of the titanium compound (b) and electron donor.
Claim 4
Dependent Claim
13 words
A process according to Claim 2, wherein the electron donor is an ester.
Claim 5
Dependent Claim
26 words
A process according to Claim 2, wherein the amount of the electron donor used is 10 -5 to 0.1 mole per gram of solid product (a).
Claim 6
Dependent Claim
39 words
A process.according to Claim 1, wherein the titanium compound (b) is one represented by the formula, Ti(OAr)nX 4-n , wherein OAr is an aryloxy group, X is halogen and n is a number satisfying 0 < n < 4.
Claim 7
Dependent Claim
17 words
A process according to Claim 5, wherein n is a number satisfying 0 < n < 1.
Claim 8
Dependent Claim
17 words
A process according to Claim 6, wherein n is a number satisfying 0.02 ≦ n ≦ 0.8.
Claim 9
Dependent Claim
61 words
. A process according to Claim 1., wherein the solid catalyst is one obtained by contact reaction by slurrying the solid product (a) in a liquid-form titanium compound (b) or a solution-form titanium compound (b) in an inert solvent or by'impregnating the solid product (a) with a liquid-form titanium compound (b) or a solution-form titanium compound (b) in an inert solvent.
Claim 10
Dependent Claim
18 words
A process according to Claim 8, wherein the inert solvent is an aromatic hydrocarbon and/or a halogenated hydrocarbon.
Claim 11
Dependent Claim
15 words
A process according to Claim 9, wherein the inert solvent is an aromatic halogenated hydrocarbon.
Claim 12
Dependent Claim
23 words
A process according to Claim 8, wherein the concentration of the titanium compound (b) in the solution is 5 to 90% by volume.
Claim 13
Dependent Claim
25 words
A process according to Claim 1, wherein the contact reaction between solid product (a) and titanium compound (b) is carried out at 0° to 150°C.
References Cited (Backward Citations)
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