Patent EP0435627A2 successfully refreshed from Google Patents.
EP0435627A2
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EP
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Supported olefin polymerization catalyst
Assignee: Mobil Oil AS
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Filing: 1990-12-21
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Granted: —
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Expires: 2010-12-21
Abstract
Abstract A supported olefin, e.g., alpha-olefin, polymerization catalyst composition is synthesized by reacting (1) a slurry of a solid catalyst carrier in a non-polar solvent, e.g., hexane, with a dialkyl organomagnesium composition; (2) contacting the slurry of step (1) with a hydroxyl group-containing compound, e.g., an alcohol; (3) contacting the slurry of step (2) with at least one transition metal compound; (4) removing the non-polar solvent to obtain a dry-flowing powder; and, (5) activating the powder with dimethylaluminum chloride. The resulting catalyst composition produces polymers having substantially better distribution of side chain branches on polymer molecules than polymers made with precursors activated with conventional activators, e.g., triethylaluminum.
Inventors
- 👤 Robert Olds Haggerty
- 👤 Per Kristian Husby
- 👤 Yuri Viktorovich Kissin
- 👤 Thomas Edward Nowlin
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:47
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
127 words
A method of producing a supported olefin polymerization catalyst comprising the steps of: (i) contacting a slurry of a solid, porous carrier and a non-polar solvent with at least one organomagnesium composition having the formula where R and R' are the same or different C₄-C₁₂ alkyl groups, m and n are each 0, 1 or 2, provided that m + n is equal to the valence of Mg; (ii) contacting the slurry of step (i) with at least one compound of the formula where R" is a C₁-C₁₀ alkyl group or a C₁-C₁₀ halogenated alkyl group; (iii) contacting the slurry of step (ii) with at least one transition metal compound soluble in the non-polar solvent; and (iv) combining the product of said step (iii) with dimethylaluminum chloride.
Claim 2
Dependent Claim
34 words
A method according to claim 1 wherein the solid, porous carrier is silica which, prior to contact thereof with the solvent in said step (i), is heated at a temperature of 100°C to 1000°C.
Claim 3
Dependent Claim
16 words
A method according to claim 3 wherein the silica is heated at a temperature of 600°C.
Claim 4
Dependent Claim
34 words
A method according to claim 2 or 3 wherein the silica has, after the heating, surface hydroxyl group concentration of 0.5 mmoles/g, a surface area of 300m²/gram and a pore volume of 1.65 m³/gram.
Claim 5
Independent Claim
33 words
A method according to any preceding claim wherein the product of said step (iii) , prior to conduction said step (iv), is dried at 40° to 65°C to substantially remove the non-polar solvent.
Claim 6
Independent Claim
29 words
A method according to any of claims 1 to 4 wherein the product of said step (iii), prior to conducting said step (iv), is dried at 45° to 55°C.
Claim 7
Independent Claim
27 words
A method according to any of claims 1 to 4 wherein the product of said step (iii), prior to conducting said step (iv), is dried at 50°C.
Claim 8
Independent Claim
123 words
A method according to any preceding claim wherein in said step (i) only such an amount of the organomagnesium composition is used which will be deposited onto the carrier; in said step (ii) only such an amount of the compound of the formula (II) is used which is sufficient to convert substantially all of the magnesium alkyl groups on the carrier to magnesium alkoxy groups, so that substantially no excess of the formula (II) compound is present in the non-polar solvent after substantially all of the magnesium groups are converted to the magnesium alkoxy groups; and in said step (iii) such an amount of the transition metal compound is used which is not greater than that which can be deposited on the carrier.
Claim 9
Independent Claim
67 words
A method according to any of claims 1 to 8 wherein after said step (iii) but before said step (iv), there is conducted the following step (iii a): (iii a) contacting the slurry of said step (iii) with at least one halogenated alkyl aluminum compound of the formula where R³ is a C₁-C₁₀ alkyl group, X is Cl, Br or I, and y is 1 or 2.
Claim 10
Dependent Claim
17 words
A method according to claim 9 wherein R³ is a C₁-C₄ alkyl group and X is Cl.
Claim 11
Dependent Claim
17 words
A method according to claim 9 or 10 wherein the compound of formula (III) is diethylaluminum chloride.
Claim 12
Dependent Claim
17 words
A method according to claim 9 or 10 wherein the compound of formula (III) is ethylaluminum dichloride.
Claim 13
Dependent Claim
73 words
A supported olefin polymerization catalyst comprising at least one organomagnesium composition having the formula where R and R' are the same or different C₄-C₁₂ alkyl groups, m and n are each 0,1 or 2, providing that m+n is equal to the valence of Mg, at least one compound of the formula where R" is a C₁-C₁₀ alkyl group or a C₁-C₁₀ halogenated alkyl group, at least one transition metal compound, and dimethylaluminum chloride.
Claim 14
Dependent Claim
14 words
A catalyst according to claim 13 wherein R and R' are C₄-C₁₀ alkyl groups.
Claim 15
Dependent Claim
14 words
A catalyst according to claim 13 wherein R and R' are C₄-C₈ alkyl groups.
Claim 16
Dependent Claim
21 words
A catalyst according to claim 13 wherein R and R' are each butyl groups, m is 1 and n is 1.
Claim 17
Dependent Claim
17 words
A catalyst according to any of claims 13 to 16 wherein R" is a C₁-C₈ alkyl group.
Claim 18
Dependent Claim
20 words
A catalyst according to any of claims 13 to 16 wherein R" is a methyl, ethyl, propyl or butyl group.
Claim 19
Dependent Claim
18 words
A catalyst according to any of claims 13 to 16 wherein R" is a C₂-C₁₀ chlorinated alkyl group.
Claim 20
Dependent Claim
18 words
A catalyst according to any of claims 13 to 16 wherein R" is a C₂-C₈ chlorinated alkyl group.
Claim 21
Dependent Claim
20 words
A catalyst according to any of claims 13 to 16 wherein R" is a chlorinated ethyl, propyl or butyl group.
Claim 22
Dependent Claim
16 words
A catalyst according to any of claims 13 to 16 wherein R" is a 2,2,2-trichloroethyl group.
Claim 23
Dependent Claim
24 words
A catalyst according to any of claims 13 to 22 wherein the non-polar solvent is a hydrocarbon which is a liquid at ambient conditions.
Claim 24
Dependent Claim
22 words
A catalyst according to any of claims 13 to 23 wherein the transition metal compound is a compound of titanium or vanadium.
Claim 25
Dependent Claim
41 words
A catalyst according to any of claims 13 to 24 wherein the amount of the transition metal compound present in said step (iii) is such that the molar ratio of Mg to the transition metal is about 1 to about 3.
Claim 26
Dependent Claim
39 words
A catalyst according to any of claims 13 to 24 wherein the amount of the transition metal compound present in said step (iii) is such that the molar ratio of Mg to the transition metal is 2 to 3.
Claim 27
Dependent Claim
39 words
A catalyst according to any of claims 13 to 24 wherein the amount of the transition metal compound present in said step (iii) is such that the molar ratio of Mg to the transition metal is 1.65 to 2.40.
Claim 28
Dependent Claim
14 words
A catalyst according to claim 27 wherein the transition metal compound is titanium halide.
Claim 29
Dependent Claim
13 words
A catalyst according to claim 28 wherein the titanium halide is titanium tetrahalide.
Claim 30
Dependent Claim
12 words
A catalyst according to claim 29 wherein the titanium tetrahalide is TiCl₄.
Claim 31
Dependent Claim
31 words
A catalyst according to claim 30 wherein the amount of the TiCl₄ present in said step (iii) is such that the molar ratio of Mg to Ti is 1 to 3.
Claim 32
Dependent Claim
31 words
A catalyst according to claim 30 wherein the amount of the TiCl₄ present in said step (iii) is such that the molar ratio of Mg to Ti is 2 to 3.
Claim 33
Dependent Claim
17 words
A catalyst according to claims 30, 31 or 32 wherein the solid, porous carrier contains OH groups.
Claim 34
Dependent Claim
30 words
A catalyst according to claim 33 wherein the amount of the organomagnesium composition used in said step (i) is such that the molar ratio of Mg:OH is 1:1 to 6:1.
Claim 35
Dependent Claim
30 words
A catalyst according to claim 33 wherein the amount of the organomagnesium composition used in said step (i) is such that the molar ratio of Mg:OH is 2:1 to 4:1.
Claim 36
Dependent Claim
30 words
A catalyst according to claim 33 wherein the amount of the organomagnesium composition used in said step (i) is such that the molar ratio of Mg:OH is 2.5:1 to 3.5:1.
Claim 37
Dependent Claim
28 words
A catalyst according to claim 33 wherein the amount of the organomagnesium composition used in said step (i) is such that the molar ratio of Mg:OH is 3:1.
Claim 38
Dependent Claim
27 words
A process for polymerizing at least one olefin comprising contacting the olefin under olefin polymerization conditions with a catalyst according to any of claims 9 to 33.
Claim 39
Dependent Claim
12 words
A process according to claim 38 wherein the olefin is an alpha-olefin.
References Cited (Backward Citations)
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