EP0244678A1
Expired / Lapsed
EP
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Process for producing alpha-olefin polymer
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1987-04-15
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Granted: —
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Expires: 2007-04-15
Abstract
Abstract A solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n≦4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having a pore volume of, at a pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride; a catalyst system comprising: (A) said solid catalyst component, (B) an organoaluminum compound, and (C) a silicon compound having at leat one Si-OR 2 bond (wherein R 2 is a hydrocarbon group having 1 to 20 carbon atoms) for alpha-olefin polymerization; and a process for producing an alpha-olefin polymer, which comprises homopolymerizing an alpha-olefin or copolymerizing alpha-olefins using said catalyst system.
Inventors
- 👤 Toshio Sasaki
- 👤 Takeshi Ebara
- 👤 Kiyoshi Kawai
- 👤 Akinobu Shiga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 01:06
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/72; C08F4/74; C08F4/76; C08F10/00
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
120 words
A solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 2
Dependent Claim
120 words
A solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 3
Dependent Claim
46 words
A solid catalyst component according to Claim 1, wherein the hydrocarbon group R 1 of the titanium compound represented by the general formula Ti(OR 1 ) n X 4-n is alkyl groups having 2 to 18 carbon atoms and/or aryl groups having 6 to 18 atoms.
Claim 4
Dependent Claim
28 words
A solid catalyst component according to Claim 1, wherein the X of the titanium compound represented by the general formula Ti(OR 1 ) n X 4-n is chlorine.
Claim 5
Dependent Claim
31 words
A solid catalyst component according to Claim 1, wherein the n of the titanium compound represented by the general formula Ti(OR 1 ) n X 4-n is a number satisfying 2<n<4.
Claim 6
Dependent Claim
81 words
A solid catalyst component according to Claim 1, wherein the organomagnesium compound is a Grignard compound represented by the general formula R 9 MgX (wherein R 9 is a hydrocarbon group having 1 to 20 carbon atoms and X is a halogen atom), or a dialkyl magnesium compound or a diaryl magnesium compound both represented by the general formula R 10 R 11 Mg (wherein R 10 and R 11 are each a hydrocarbon group having 1 to 20 carbon stoms).
Claim 7
Dependent Claim
90 words
A solid catalyst component according to Claim 1, wherein the organosilicon compound having at least one Si-O bond is represented by the following general formula: or (wherein R 3 is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R are each a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom; m is a number satisfying 0<m≦4; p is an integer of 1 to 1,000; and q is an integer of 2 to 1,000).
Claim 8
Dependent Claim
43 words
A solid catalyst component according to Claim 6, wherein the organosilicon compound having at least one si-O bond is an akoxysilane compound represented by the general formula Si(OR 3 ) m R 4 4-m , in which m is a number satisfying 1≦m≦4.
Claim 9
Dependent Claim
30 words
A solid catalyst component according to Claim 1, 0 wherein the pore volume of at pore radius of 75 to 20,000 A, the silica gel is 0.8 ml/g or more.
Claim 10
Dependent Claim
21 words
A solid catalyst component according to Claim 1, wherein the ester compound is olefin carboxylic acid ester or phthalic acid ester.
Claim 11
Dependent Claim
39 words
A solid catalyst component according to Claim 2, wherein the organosilicon compound having Si-O bonds is used in an amount of 1 to 50 in terms of the atomic ratio of silicon atom to titanium atom in titanium compound.
Claim 12
Dependent Claim
41 words
A solid ctalyst component according to Claim 1 or 2, wherein the organomagnesium compound is used in an amount of 0.1 to 10 in terms of the atomic ratio of the sum of titanium atom and silicon atom to magnesium atom.
Claim 13
Dependent Claim
32 words
A solid catalyst component according to Claim 1, wherein the silica gel is used in an amount of 20 to 90% by weight in terms of % by weight in solid product.
Claim 14
Dependent Claim
20 words
A solid catalyst component according to Claim 1, wherein the reduction is conducted at a temperature of -50° to 70°C.
Claim 15
Dependent Claim
31 words
A solid catalyst component according to Claim 1, wherein the ester compound is used in an amount of 0.1 to 50 moles per 1 mole of titanium atom in solid product.
Claim 16
Dependent Claim
31 words
A solid catalyst component according to Claim 1, wherein the ether compound is used in an amount of 0.1 to 100 moles per 1 mole of titanium atom in solid product.
Claim 17
Dependent Claim
45 words
A solid catalyst component according to Claim 1, wherein titanium tetrachloride is used in an amount of 2 to 2,000 moles per 1 mole of titanium atom in solid product and in an amount of 1 to 100 moles per 1 mole of ether compound.
Claim 18
Dependent Claim
21 words
A solid catalyst component according to Claim 1, wherein the solid product is treated with an ester compound in a diluent.
Claim 19
Dependent Claim
19 words
A solid catalyst component according to Claim 17, wherein the diluent is an aromatic hydrocarbon or a halogenated hydrocarbon.
Claim 20
Dependent Claim
29 words
A solid catalyst component according to Claim 1, wherein the ester-treated solid product is treated with an ether compound and titanium tetrachloride in a slurry state using a solvent.
Claim 21
Dependent Claim
19 words
A solid catalyst component according to Claim 19, wherein the solvent is an aromatic hydrocarbon or a halogenated hydrocarbon.
Claim 22
Dependent Claim
156 words
A catalyst system for alpha-olefin polymerization comprising: (A) a solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride, (B) an organoaluminum compound, and (C) a silicone compound having at least one Si-OR 2 bond (wherein R 2 is a hydrocarbon group having 1 to 20 carbon atoms).
Claim 23
Dependent Claim
156 words
A catalyst system for alpha-olefin polymerization comprising: (A) a solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride, (B) an organoaluminum compound, and (C) a silicone compound having at least one Si-OR 2 bond (wherein R 2 is a hydrocarbon group having 1 to 20 carbon atoms).
Claim 24
Dependent Claim
78 words
A catalyst system for alpha-olefin polymerization according to Claim 21, wherein the organoaluminum compound (B) is a compound having at least one Al-C bond within the molecule and represented by the general formula (wherein R 12 , R , R 14 , R 15 and R 16 are each a hydrocarbon group having 1 to 8 carbon atoms; Y is a halogen atom, a hydrogen atom or an alkoxy group; and y is a number of satisfying 2≦y≦3).
Claim 25
Dependent Claim
30 words
A catalyst system for alpha-olefin polymerization according to Claim 22, wherein the organoaluminum compound is a trialkylaluminum, a mixture of a trialkylaluminum and a dialkylaluminum halide, or an alkyl alumoxane.
Claim 26
Dependent Claim
55 words
A catalyst system for alpha-olefin polymerization according to Claim 21, wherein the silicone compound (C) is an alkoxysilane compound represented by the general formula R 17 a Si(OR 2 ) 4-a (wherein R 2 and R 17 are each a hydrocarbon group of 1 to 20 carbon atoms and a is a number satisfying 0≦a≦3).
Claim 27
Dependent Claim
45 words
A catalyst system for alpha-olefin polymerization according to Claim 24, wherein in the general formula of the alkoxysilane compound, R 2 is a straight chain alkyl group of I to 10 carbon atoms and at least one of R 17 s is an aryl group.
Claim 28
Dependent Claim
186 words
A process for producing an alpha-olefin polymer, which comprises homopolymerizing an alpha-olefin or copolymerizing alpha-olefins using a catalyst system comprising: (A) a solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having 0 a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride, (B) an organoaluminum compound, and (C) a silicon compound having at least one Si- OR 2 bond (wherein R 2 is a hydrocarbon group having 1 to 20 carbon atoms), at a temperature of -30°C to 200°C under a pressure of 3 to 100 atoms.
Claim 29
Dependent Claim
186 words
A process for producing an alpha-olefin polymer, which comprises homopolymerizing an alpha-olefin or copolymerizing alpha-olefins using a catalyst system comprising: (A) a solid catalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4-n (wherein R 1 is a hydrocarbon group of 1 to 20 carbon atoms; X is a halogen atom; and n is a number satisfying 0<n<4) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a silica gel having 0 a pore volume of, at pore radius of 75 to 20,000 A, at least 0.65 ml/g to obtain a solid product, treating the solid product with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride, (B) an organoaluminum compound, and (C) a silicon compound having at least one Si- OR 2 bond (wherein R 2 is a hydrocarbon group having 1 to 20 carbon atoms), at a temperature of -30°C to 200°C under a pressure of 3 to 100 atoms.
References Cited (Backward Citations)
FR2265768A1
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EP0026027A1
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US4335016A
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EP0111902A2
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GB2167762A
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EP0206817A1
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