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US4808387A
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Stabilization of vanadium tetrachloride
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1987-05-15
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Granted: 1989-02-28
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Expires: 2007-05-15
Abstract
Abstract Vanadium tetrachloride is stabilized by the addition of minor but stabilizing amounts of an acyl halide, benzoyl chloride being especially preferred. The vanadium tetrachloride may be dissolved in an inert organic solvent; hydrocarbons such as hexane are preferred. The stabilized vanadium tetrachloride may be utilized subsequently in polymerization processes.
Inventors
- 👤 Sudhin Datta
- 👤 Trazollah Ouhadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:38
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/20; A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/533; C01; C01G; C01G31/00; C01G31/04; C08F10/00; Y; Y10; Y10S; Y10S502/00; Y10S502/50
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
A method of stabilizing vanadium tetrachloride against decomposition into vanadium trichloride which comprises incorporating therein an amount of an acyl halide effective to preclude said decomposition, wherein said acyl halide is of the formula ##STR2## in which R is a bond or a C 1-6 alkyl, alkylene, aryl or arylene group, n is 0 or 1 and X is halogen, and wherein the amount of said acyl halide ranges from about 0.1 to 10 mol % of vanadium.
Claim 2
Independent Claim
78 words
A method of stabilizing vanadium tetrachloride against decomposition into vanadium trichloride which comprises incorporating therein an amount of an acyl halide effective to preclude said decomposition, wherein said acyl halide is of the formula ##STR2## in which R is a bond or a C 1-6 alkyl, alkylene, aryl or arylene group, n is 0 or 1 and X is halogen, and wherein the amount of said acyl halide ranges from about 0.1 to 10 mol % of vanadium.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the vanadium tetrachloride is in solution with an inert organic solvent.
Claim 4
Dependent Claim
15 words
The method of claim 2 wherein said inert organic solvent is a hydrocarbon or halocarbon.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein n is 0, R is C 1-6 alkyl or phenyl and X is chloro.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the acyl halide is benzoyl chloride.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the amount of said acyl halide ranges from about 3 to 5 mol %.
Claim 8
Independent Claim
53 words
A method of stabilizing vanadium tetrachloride against decomposition into vanadium trichloride which comprises incorporation therein an amount of an acyl halide effective to preclude said decomposition wherein the acyl halide is of the formula ##STR3## in which n is 1, R is a bond, C 1-6 alkylene or phenylene and X is chloro.
Claim 9
Independent Claim
53 words
A method of stabilizing vanadium tetrachloride against decomposition into vanadium trichloride which comprises incorporation therein an amount of an acyl halide effective to preclude said decomposition wherein the acyl halide is of the formula ##STR3## in which n is 1, R is a bond, C 1-6 alkylene or phenylene and X is chloro.
Claim 10
Dependent Claim
82 words
A stabilized vanadium tetrachloride composition comprising vanadium tetrachloride, an inert organic solvent, and an amount of an acyl halide effective to preclude substantial decomposition of said vanadium tetrachloride, wherein said acyl halide is of the formula ##STR4## in which R is a bond or a C 1-6 alkyl, alkylene, aryl or arylene group, n is 0 or 1 and X is halogen, and wherein the amount of said acyl halide ranges from about 0.1 to 10 mol % per mol of vanadium.
Claim 11
Dependent Claim
82 words
A stabilized vanadium tetrachloride composition comprising vanadium tetrachloride, an inert organic solvent, and an amount of an acyl halide effective to preclude substantial decomposition of said vanadium tetrachloride, wherein said acyl halide is of the formula ##STR4## in which R is a bond or a C 1-6 alkyl, alkylene, aryl or arylene group, n is 0 or 1 and X is halogen, and wherein the amount of said acyl halide ranges from about 0.1 to 10 mol % per mol of vanadium.
Claim 12
Dependent Claim
18 words
The stabilized vanadium tetrachloride composition of claim 8 wherein said inert organic solvent is a hydrocarbon or halocarbon.
Claim 13
Dependent Claim
23 words
The stabilized vanadium tetrachloride composition of claim 8 wherein the amount of the acyl halide ranges from about 3 to 5 mol %.
Claim 14
Dependent Claim
23 words
The stabilized vanadium tetrachloride composition of claim 8 wherein n is 0, R is C 1-6 alkyl or phenyl and X is chloro.
Claim 15
Dependent Claim
15 words
The stabilized vanadium tetrachloride composition of claim 8 wherein the acyl halide is benzoyl chloride.
Claim 16
Dependent Claim
14 words
The stabilized vanadium tetrachloride composition of claim 12 wherein the solvent is a hydrocarbon.
Claim 17
Dependent Claim
55 words
A stabilized vanadium chloride composition comprising vanadium tetrachloride, an inert organic solvent, and an amount of an acyl halide effective to preclude substantial decomposition of said vanadium tetrachloride wherein the acyl halide is of the formula ##STR5## in which n is 1, R is a bond, C 1-6 alkylene or phenylene and X is chloro.
Claim 18
Dependent Claim
55 words
A stabilized vanadium chloride composition comprising vanadium tetrachloride, an inert organic solvent, and an amount of an acyl halide effective to preclude substantial decomposition of said vanadium tetrachloride wherein the acyl halide is of the formula ##STR5## in which n is 1, R is a bond, C 1-6 alkylene or phenylene and X is chloro.
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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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |