US4477639A
Expired / Lapsed
US
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Olefin polymerization catalyst component and composition and method of preparation
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1983-05-27
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Granted: 1984-10-16
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Expires: 2003-05-27
Abstract
Abstract A polymer-supported constituent for olefin polymerization catalyst obtained by: mixing in organic solution a chlorine-containing organic polymer and a magnesium compound, removing the solvent, and reacting the resulting magnesium-modified polymer with a titanium halide. An olefin polymerization catalyst is formed by mixing such a polymer-supported constituent with an appropriate organo-metallic compound and optionally also an appropriate selectivity control agent.
Inventors
- 👤 Robert P. Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/904
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A polymer-supported constituent for olefin polymerization catalysts obtained by: (a) mixing in organic solution a chlorine-containing organic polymer and a magnesium compound, (b) removing the organic solvent to form a magnesium-modified polymer, (c) reacting the magnesium-modified polymer with a halogenated titanium compound, wherein the chlorine-containing organic polymer is a poly(vinyl chloride/vinylidene chloride) copolymer and the magnesium compound is a magnesium salt of an aromatic carboxylic acid.
Claim 2
Dependent Claim
66 words
A polymer-supported constituent for olefin polymerization catalysts obtained by: (a) mixing in organic solution a chlorine-containing organic polymer and a magnesium compound, (b) removing the organic solvent to form a magnesium-modified polymer, (c) reacting the magnesium-modified polymer with a halogenated titanium compound, wherein the chlorine-containing organic polymer is a poly(vinyl chloride/vinylidene chloride) copolymer and the magnesium compound is a magnesium salt of an aromatic carboxylic acid.
Claim 3
Dependent Claim
16 words
A catalyst constituent as claimed in claim 1 wherein the halogenated titanium compound is titanium tetrachloride.
Claim 4
Dependent Claim
14 words
A catalyst constituent as claimed in claim 1 wherein the organic solvent is tetrahydrofuran.
Claim 5
Dependent Claim
75 words
A polymer-supported constituent for olefin polymerization catalysts obtained by: (a) adding a poly(vinyl chloride/vinylidene chloride) copolymer and a magnesium salt of an aromatic carboxylic acid to an organic solvent capable of dissolving both the copolymer and the salt, (b) mixing the resultant solution at a temperature above ambient but below that at which the solvent distils off, (c) removing the organic solvent to form a magnesium-modified polymer, (d) reacting the magnesium-modified polymer with titanium tetrachloride.
Claim 6
Dependent Claim
75 words
A polymer-supported constituent for olefin polymerization catalysts obtained by: (a) adding a poly(vinyl chloride/vinylidene chloride) copolymer and a magnesium salt of an aromatic carboxylic acid to an organic solvent capable of dissolving both the copolymer and the salt, (b) mixing the resultant solution at a temperature above ambient but below that at which the solvent distils off, (c) removing the organic solvent to form a magnesium-modified polymer, (d) reacting the magnesium-modified polymer with titanium tetrachloride.
Claim 7
Dependent Claim
21 words
A catalyst constituent as claimed in claim 4 wherein the organic solvent is tetrahydrofuran and the magnesium salt is magnesium benzoate.
Claim 8
Dependent Claim
78 words
A process for the preparation of a polymer-supported constituent for olefin polymerization catalysts which comprises: (a) mixing in organic solution a chlorine-containing organic polymer and a magnesium compound, (b) removing the organic solvent to yield a magnesium-modified polymer, (c) reacting the magnesium-modified polymer with a halogenated titanium compound to form a polymer-supported catalyst-forming component, wherein the chlorine-containing organic polymer is a poly(vinyl chloride/vinylidene chloride) copolymer and the magnesium compound is a magnesium salt of an aromatic carboxylic acid.
Claim 9
Dependent Claim
78 words
A process for the preparation of a polymer-supported constituent for olefin polymerization catalysts which comprises: (a) mixing in organic solution a chlorine-containing organic polymer and a magnesium compound, (b) removing the organic solvent to yield a magnesium-modified polymer, (c) reacting the magnesium-modified polymer with a halogenated titanium compound to form a polymer-supported catalyst-forming component, wherein the chlorine-containing organic polymer is a poly(vinyl chloride/vinylidene chloride) copolymer and the magnesium compound is a magnesium salt of an aromatic carboxylic acid.
Claim 10
Dependent Claim
47 words
A catalyst for the polymerization of olefins, obtained by mixing a polymer-supported catalyst constituent as defined in claim 1 with an organic-metallic compound of a metal of Group II or III of the Mendeleev Periodic Table, and optionally also an electron donor compound as selectivity control agent.
Claim 11
Dependent Claim
29 words
Catalyst as claimed in claim 7 wherein the organo-metallic compound is a trialkyl aluminum and the selectivity control agent is an ester of an oxygenated organic or inorganic acid.
Claim 12
Dependent Claim
14 words
Catalyst as claimed in claim 8 wherein the selectivity control agent is p-ethyl anisate.
Claim 13
Dependent Claim
23 words
Process for the polymerization of olefins which comprises contacting at least one ethylenically unsaturated hydrocarbon with a catalyst as defined in claim 7.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |