EP0306939A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Solid catalyst component for olefin copolymerization and process for olefin copolymerization using said solid catalyst component
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1988-09-08
•
Granted: —
•
Expires: 2008-09-08
Abstract
Abstract A solid catalyst component for olefin copolymerization containing trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹ 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 a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g, or in the presence of an organosilicon compound having at least one Si-O bond and the porous carrier to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride, a catalyst system for olefin copolymerization comprising the above-mentioned solid catalyst component and an organoaluminum compound, as well as a process for olefin copolymerization using said catalyst system.
Inventors
- 👤 Toshio Sasaki
- 👤 Yoshihiro Miyoshi
- 👤 Takeshi Ebara
- 👤 Kiyoshi Kawai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:31
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F10/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
104 words
A solid catalyst component for olefin copolymerization containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹ 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 a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 2
Dependent Claim
104 words
A solid catalyst component for olefin copolymerization containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹ 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 a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 3
Dependent Claim
99 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the solid catalyst component is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹, X and n are as defined above) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product and treating the solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 4
Dependent Claim
47 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the hydrocarbon group R¹ of the titanium compound represented by the general formula Ti(OR¹) n X 4-n is alkyl groups having 2 to 18 carbon atoms and/or aryl groups having 6 to 18 carbon atoms.
Claim 5
Dependent Claim
29 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the X of the titanium compound represented by the general formula Ti(OR¹) n X 4-n is chlorine.
Claim 6
Dependent Claim
36 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the n of the titanium compound represented by the general formula Ti(OR¹) n X 4-n is a number satisfying 2 ≦ n ≦ 4.
Claim 7
Dependent Claim
75 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the organomagnesium compound is a Grignard compound represented by the general formula R⁹MgX (wherein R⁹ 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 R¹⁰R¹¹Mg (wherein R¹⁰ and R¹¹ are each a hydrocarbon group having 1 to 20 carbon atoms).
Claim 8
Dependent Claim
98 words
A solid catalyst component for olefin copolymerization according to Claim 2, wherein the organosilicon compound having at least Si-O bond is represented by the following general formula: Si(OR³) m R⁴ 4-m , R⁵(R⁶SiO) p SiR⁷₃ or (R⁸₂SiO) q (wherein R³ is a hydrocarbon group having 1 to 20 carbon atoms, R⁴, R⁵, R⁶, R⁷, and R⁸ 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 9
Dependent Claim
46 words
A solid catalyst component for olefin copolymerization according to Claim 7, wherein the organosilicon compound having at least one Si-O bond is an alkoxysilane compound represented by the general formula Si(OR³) m R⁴ 4-m in which m is a number satisfying 1 ≦ m ≦ 4.
Claim 10
Dependent Claim
28 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the particle diameter of the porous carrier is in the range of 0.1 to 100 µm.
Claim 11
Dependent Claim
32 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the pore volume of, at pore radius of 50 to 5,000 Å, the porous carrier is 0.4 ml/g or more.
Claim 12
Dependent Claim
38 words
A solid catalyst for olefin copolymerization according to Claim 2, wherein the organosilicon compound having Si-O bonds is used in an amount of 1 to 30 in terms of the atomic ratio of silicon atom to titanium compound.
Claim 13
Dependent Claim
44 words
A solid catalyst component for olefin copolymerization according to Claim 1 or 2, wherein the organomagnesium compound is used in an amount of 0.1 to 10 in term of the atomic ratio of the sum of titanium atom and silicon atom to magnesium atom.
Claim 14
Dependent Claim
35 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the porous carrier is used in an amount of 20 to 90% by weight in terms of % by weight in solid product.
Claim 15
Dependent Claim
23 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the reduction is conducted at a temperature of -50°C to 70°C.
Claim 16
Dependent Claim
34 words
A solid catalyst component for olefin copolymerization 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
49 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the titanium tetrachloride is used in an amount of 1 to 1,000 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
31 words
A solid catalyst component for olefin copolymerization according to Claim 1, wherein the solid product is treated with an ether compound and titanium tetrachloride in a slurry state using a solvent.
Claim 19
Dependent Claim
22 words
A solid catalyst component for olefin copolymerization according to Claim 17, wherein the solvent is an aromatic hydrocarbon or a halogenated hydrocarbon.
Claim 20
Dependent Claim
17 words
A solid catalyst component for olefin copolymerization according to Claim 8, wherein the organosilicon compound is tetraethoxysilane.
Claim 21
Dependent Claim
124 words
A process for olefin copolymerization 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(OR¹) n X 4-n (wherein R¹ 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 a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride, and (B) an organoaluminum compound at a temperature of 130°C or above.
Claim 22
Dependent Claim
124 words
A process for olefin copolymerization 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(OR¹) n X 4-n (wherein R¹ 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 a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride, and (B) an organoaluminum compound at a temperature of 130°C or above.
Claim 23
Dependent Claim
97 words
A process for olefin copolymerization according to Claim 20, wherein the solid catalyst component is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹, X, and n are as defined above) with an organomagnesium compound in the presence of an organosilicon compound having at least one Si-O bond and a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product and treating the solid product with a mixture of an ether compound and titanium tetrachloride.
Claim 24
Dependent Claim
123 words
A process for olefin copolymerization according to Claim 20, wherein the catalyst system comprises: (A) a solid cstalyst component containing a trivalent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR¹) n X 4-n (wherein R¹, X and n are as defined above) with an organomagnesium compound in the presence of a porous carrier having a pore volume of, at pore radius of 50 to 5,000 Å, at least 0.2 ml/g to obtain a solid product, treating the solid product with a mixture of an ether compound and titanium tetrachloride, (B) an organoaluminum compound, and (C) an electron-donor selected from organic carboxlic esters, phosphorous esters or silicic acid esters at a temperature of 130°C or above.
Claim 25
Dependent Claim
39 words
A process for olefin copolymerization according to Claim 22, wherein the electron-donor of the catalyst system is a silicic acid ester having at least one Si-OR bond (wherein R is a hydrocarbon group having 1 to 20 carbon atoms).
Claim 26
Dependent Claim
78 words
A process for olefin copolymerization according to Claim 20, wherein the organoaluminum compound (B) is a compound having at least Al-C bond within the molecule and represented by the general formula R¹² r AlY 3-r or R¹³R¹⁴Al-O-AlR¹⁵R¹⁶ (wherein R¹², R¹³, R¹⁴, R¹⁵ and R¹⁶ are each a hydrocarbon group having 1 to 8 carbon atoms, Y is a halogen atom, a hydrogen atom or an alkoxy group, and r is a number satisfying 1 ≦ r ≦ 3).
Claim 27
Dependent Claim
21 words
A process for olefin copolymerization according to Claim 23, wherein the organoaluminum compound is an alkylaluminum sesquihalide, dialkylaluminum halide or trialkylaluminum.
Claim 28
Dependent Claim
21 words
A process for olefin copolymerization according to Claim 20, wherein the polymerization temperature is in the range of 150° to 270°C.
Claim 29
Dependent Claim
27 words
A process for olefin copolymerization according to Claim 20, 22 or 23, wherein copolymerization of ethylene and alpha-olefins having 3 to 20 carbon atoms is carried out.
Claim 30
Dependent Claim
37 words
A process for olefin copolymerization according to Claim 27, wherein the copolymer is constituted of at least 80% by mole of ethylene and residual percentage is an alpha-olefin selected from propylene, butene-1, 4-methylpentene-1, hexene-1, octene-1 or vinylcyclohexane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.