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US4672050A
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Catalyst and process for producing alpha-olefin polymers using the same
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1986-03-20
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Granted: 1987-06-09
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Expires: 2006-03-20
Abstract
Abstract A catalyst comprising: (A) a solid catalyst component containing a tri-valent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR1)nX4-n (wherein R1 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n</=4) with an organo magnesium compound in the presence of an organo silicon compound having Si-O bonds and then treating the resulting solid product with an ester compound and a mixture of an ether compound and titanium tetrachloride, (B) an organo aluminum compound, and (C) a silicon compound having Si-OR2 bonds (wherein R2 is a hydrocarbon group having 1 to 20 carbon atoms) and/or an organic carboxylic acid ester, and a process for producing alpha -olefin polymers using the same.
Inventors
- 👤 Toshio Sasaki
- 👤 Masaaki Katao
- 👤 Kiyoshi Kawai
- 👤 Akinobu Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:18
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
176 words
A solid catalyst component for α-olefin polymerization containing a tri-valent 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 having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n≦4) with an organo magnesium compound in the presence of an organo silicon compound having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4 .sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7 .sub.3 or (R.sup.8 .sub.2 SiO).sub.q (wherein R 3 --is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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), and then treating the resulting solid product with a mono- or polycarboxylic acid ester and a mixture of a dialkyl ether and titanium tetrachloride.
Claim 2
Dependent Claim
176 words
A solid catalyst component for α-olefin polymerization containing a tri-valent 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 having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n≦4) with an organo magnesium compound in the presence of an organo silicon compound having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4 .sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7 .sub.3 or (R.sup.8 .sub.2 SiO).sub.q (wherein R 3 --is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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), and then treating the resulting solid product with a mono- or polycarboxylic acid ester and a mixture of a dialkyl ether and titanium tetrachloride.
Claim 3
Dependent Claim
174 words
A solid catalyst component according to claim 1, 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 having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n≦4) with an organo magnesium compound in the presence of an organo silicon compound having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4.sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7.sub.3 or (R.sup.8.sub.2 SIO).sub.q (wherein R 3 is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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 integrer of 2 to 1,000), and then treating the resulting product firstly with a mono- or polycarboxylic acid ester and secondly with a mixture of a dialkyl ether and titanium tetrachloride.
Claim 4
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 5
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 6
Dependent Claim
32 words
A solid catalyst component according to claim 1, wherein the hydrocarbon group R 1 is alkyl groups having 2 to 18 carbon atoms and/or aryl groups having 6 to 18 carbon atoms.
Claim 7
Dependent Claim
41 words
A solid catalyst component according to claim 1, wherein the organo silicon compound having Si--O bonds is an alkoxysilane 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 8
Dependent Claim
82 words
A solid catalyst component according to claim 1, wherein the organo magnesium 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 atoms).
Claim 9
Dependent Claim
34 words
A solid catalyst component according to claim 1, wherein the ester compound is an aliphatic carboxylic acid ester, an olefinic carboxylic acid ester, an alicyclic carboxylic acid ester or an aromatic carboxylic acid ester.
Claim 10
Dependent Claim
23 words
A solid catalyst component according to claim 8, wherein the ester compound is an olefinic carboxylic acid ester or a phthalic acid ester.
Claim 11
Dependent Claim
42 words
A solid catalyst component according to claim 1, wherein the organo silicon compound having Si--O bonds is used in an amount of 1 to 50 in terms of Si/Ti, namely, the atomic ratio of silicon atom to titanium atom in titanium compound.
Claim 12
Dependent Claim
42 words
A solid catalyst component according to claim 1, wherein the organo magnesium compound is used in an amount of 0.1 to 10 in terms of (Ti+Si)/Mg, namely, the atomic ratio of the sum of titanium atom and silicon atom to magnesium atom.
Claim 13
Dependent Claim
21 words
A solid catalyst component according to claim 1, wherein the reduction is conducted at a temperature of -50° to 70° C.
Claim 14
Dependent Claim
49 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 and in an amount of 0.01 to 1.0 mole per 1 mole of magnesium atom in solid product.
Claim 15
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 16
Dependent Claim
45 words
A solid catalyst component according to claim 1, wherein 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 17
Dependent Claim
36 words
A solid catalyst component according to claim 1, wherein the solid product is treated with an ester compound and a mixture of an ether compound and titanium tetrachloride in a slurry state using a hydrocarbon solvent.
Claim 18
Dependent Claim
22 words
A solid catalyst component according to claim 16, wherein the hydrocarbon solvent is an aromatic hydrocarbon solvent or a halogenated hydrocarbon solvent.
Claim 19
Dependent Claim
241 words
A catalyst system for α-olefin polymerization comprising: (A) a solid catalyst component containing a tri-valent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4- n (wherien R 1 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and n is a number satifying 0≦n≦4) with an organo magnesium compound in the presence of an organo silicon having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4.sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7.sub.3 or (R.sup.8 SiO).sub.q (wherein R 3 is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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), and then treating the resulting solid product with a mono- or polycarboxylic acid ester and a mixture of a dialkyl ether and titanium tetrachloride, (B) an organo aluminum compound, and (C) an organo silicon compound having Si--OR 2 bonds which is an alkoxysiliane compound represented by the general formula R 17 .sub.α Si(OR 2 ) 4- α (wherein R 2 and R 17 are each a hydrocarbon group having 1 to 20 carbon atoms and α is a number satisfying 0≦α≦3) and/or an organic carbonxylic acid ester.
Claim 20
Dependent Claim
241 words
A catalyst system for α-olefin polymerization comprising: (A) a solid catalyst component containing a tri-valent titanium compound, which is obtained by reducing a titanium compound represented by the general formula Ti(OR 1 ) n X 4- n (wherien R 1 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and n is a number satifying 0≦n≦4) with an organo magnesium compound in the presence of an organo silicon having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4.sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7.sub.3 or (R.sup.8 SiO).sub.q (wherein R 3 is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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), and then treating the resulting solid product with a mono- or polycarboxylic acid ester and a mixture of a dialkyl ether and titanium tetrachloride, (B) an organo aluminum compound, and (C) an organo silicon compound having Si--OR 2 bonds which is an alkoxysiliane compound represented by the general formula R 17 .sub.α Si(OR 2 ) 4- α (wherein R 2 and R 17 are each a hydrocarbon group having 1 to 20 carbon atoms and α is a number satisfying 0≦α≦3) and/or an organic carbonxylic acid ester.
Claim 21
Dependent Claim
184 words
A catalyst system for α -olefin polymerization according to claim 18, wherein the solid catalyst component (A) containing a tri-valent titanium compound 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 having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n≦4) with an organo magnesium compound in the presence of an organo silicon compound having Si--O bonds of the formula: Si(OR.sup.3).sub.m R.sup.4.sub.4-m, R.sup.5 (R.sup.6 SiO).sub.p SiR.sup.7.sub.3 or (R.sup.8 SiO).sub.q (wherein R 3 is a hydrocarbon group having 1 to 20 carbon atoms; R 4 , R 5 , R 6 , R 7 and R 8 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), and then treating the resulting product firstly with a mono- or polycarboxylic acid ester and secondly with a mixture of a dialkyl ether and titanium tetrachloride.
Claim 22
Dependent Claim
34 words
A catalyst system for α-olefin polymerization according to claim 18, 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 23
Dependent Claim
31 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the X of the titanium compound represented by the general formula Ti(OR 1 ) n X 4- n is chlorine.
Claim 24
Dependent Claim
34 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the hydrocarbon group R 1 is alkyl groups having 2 to 18 carbon atoms and/or aryl groups having 6 to 18 carbon atoms.
Claim 25
Dependent Claim
43 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo silicon compound having Si--O bonds is an alkoxysilane 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 26
Dependent Claim
83 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo magnesium 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 R 11 are each a hydrocarbon group having 1 to 20 carbon atoms).
Claim 27
Dependent Claim
36 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the ester compound is an aliphatic carboxylic acid ester, an olefinic carboxylic acid ester, an alicyclic carboxylic acid ester or an aromatic carboxylic acid ester.
Claim 28
Dependent Claim
25 words
A catalyst system for α-olefin polymerization according to claim 25, wherein the ester compound is an olefinic carboxylic acid ester or a phthalic acid ester.
Claim 29
Dependent Claim
44 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo silicon compound having Si--O bonds is used in an amount of 1 to 50 in terms of Si/Ti, namely, the atomic ratio of silicon atom to titanium atom in titanium compound.
Claim 30
Dependent Claim
44 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo magnesium compound is used in an amount of 0.1 to 10 in terms of (Ti+Si)/Mg, namely, the atomic ratio of the sum of titanium atom and silicon atom to magnesium atom.
Claim 31
Dependent Claim
23 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the reduction is conducted at a temperature of -50° to 70° C.
Claim 32
Dependent Claim
51 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the ester compound is used in an amount of 0.1 to 50 moles per 1 mole of titanium atom in solid product and in an amount of 0.01 to 1.0 mole per 1 mole of magnesium atom in solid product.
Claim 33
Dependent Claim
32 words
A catalyst for α-olefin polymerization according to claim 18, 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 34
Dependent Claim
47 words
A catalyst system for α-olefin polymerization according to claim 18, wherein 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 35
Dependent Claim
38 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the solid product is treated with an ester compound and a mixture of an ether compound and titanium tetrachloride in a slurry state using a hydrocarbon solvent.
Claim 36
Dependent Claim
24 words
A catalyst system for α-olefin polymerization according to claim 33, wherein the hydrocarbon solvent is an aromatic hydrocarbon solvent or a halogenated hydrocarbon solvent.
Claim 37
Dependent Claim
86 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo aluminum compound (B) is a compound having at least one Al--C bond within the molecule and represented by the general formula: R.sup.12.sub.γ AlY.sub.3-γ or R.sup.13 R.sup.14 Al--O--AlR.sup.15 R.sup.16 (wherein R 12 , R 13 , 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 γ is a number satisfying 2≦γ≦3).
Claim 38
Dependent Claim
31 words
A catalyst system for α-olefin polymerization according to claim 35, wherein the organo aluminum compound is a trialkylaluminum, a mixture of a trialkylaluminum and a dialkylaluminum halide, or an alkyl alumoxane.
Claim 39
Dependent Claim
28 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organic carboxylic acid ester used as the catalyst component (C) is an aromatic carboxylic acid ester.
Claim 40
Dependent Claim
48 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organo silicon compound having Si--OR 2 bonds is used in an amount of 0.01 to 5 moles of silicon atom per 1 mole of aluminum atom in the organo aluminum compound as the catalyst component (B).
Claim 41
Dependent Claim
41 words
A catalyst system for α-olefin polymerization according to claim 18, wherein the organic carboxylic acid ester is used in amount of 0.03 to 3 moles per 1 mole of aluminum atom in the organo aluminum compound as the catalyst component (B).
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