Patent US4222969A successfully refreshed from Google Patents.
US4222969A
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Hydrocarbon soluble magnesium compositions of high magnesium content
Assignee: Texas Alkyls Inc
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Filing: 1979-04-05
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Granted: 1980-09-16
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Expires: 1999-04-05
Abstract
Abstract A composition of matter comprising di-n-butylmagnesium and dimethylmagnesium, to the exclusion of dialkylmagnesium compounds containing alkyl groups other than n-butyl or methyl, with an n-butyl:methyl alkyl group ratio of about 0.2:1 to about 5:1 which is soluble in aliphatic, cycloaliphatic, and aromatic hydrocarbon solvents is disclosed. The composition is prepared in the substantial absence of oxygen and moisture by the simultaneous or consecutive reactions of methyl and n-butyl halides with metallic magnesium in the presence of the hydrocarbon solvent, followed by separation of the insoluble magnesium chloride and any unreacted magnesium metal from the resulting solution.
Inventors
- 👤 Loyd W. Fannin
- 👤 Dennis B. Malpass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:15
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
36 words
A hydrocarbon-soluble composition of matter comprising di-n-butylmagnesium and dimethylmagnesium at a n-butyl:methyl alkyl group ratio of from about 0.2:1 to about 5:1, to the exclusion of dialkylmagnesium compounds containing alkyl groups other than n-butyl or methyl.
Claim 2
Dependent Claim
36 words
A hydrocarbon-soluble composition of matter comprising di-n-butylmagnesium and dimethylmagnesium at a n-butyl:methyl alkyl group ratio of from about 0.2:1 to about 5:1, to the exclusion of dialkylmagnesium compounds containing alkyl groups other than n-butyl or methyl.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 in which the n-butyl:methyl alkyl group ratio is from about 0.5:1 to about 4:1.
Claim 4
Dependent Claim
20 words
A composition according to claim 1 in which the n-butyl:methyl alkyl group ratio is from about 1:1 to about 2:1.
Claim 5
Dependent Claim
119 words
A process for the manufacture of a hydrocarbon solution of a dialkylmagnesium composition comprising (a) reacting, in the presence of a hydrocarbon solvent, magnesium metal with a member selected from the group consisting of a methyl halide in the presence of a magnesium activating agent, and a n-butyl halide, (b) either simultaneous to step (a) or subsequent thereto, reacting, in the presence of the solvent of step (a), the unselected member of the group of step (a) with further magnesium metal, to form a mixture of a hydrocarbon solution of a dialkylmagnesium composition and undissolved solids, and (c) separating the hydrocarbon solution from the undissolved solids, all steps being conducted in the substantial absence of both moisture and oxygen.
Claim 6
Dependent Claim
119 words
A process for the manufacture of a hydrocarbon solution of a dialkylmagnesium composition comprising (a) reacting, in the presence of a hydrocarbon solvent, magnesium metal with a member selected from the group consisting of a methyl halide in the presence of a magnesium activating agent, and a n-butyl halide, (b) either simultaneous to step (a) or subsequent thereto, reacting, in the presence of the solvent of step (a), the unselected member of the group of step (a) with further magnesium metal, to form a mixture of a hydrocarbon solution of a dialkylmagnesium composition and undissolved solids, and (c) separating the hydrocarbon solution from the undissolved solids, all steps being conducted in the substantial absence of both moisture and oxygen.
Claim 7
Dependent Claim
31 words
The process of claim 4 in which the hydrocarbon solvent is a member selected from the group consisting of aliphatic, cycloaliphatic, and aromatic hydrocarbons containing 5 to 20 carbon atoms, inclusive.
Claim 8
Dependent Claim
31 words
The process of claim 4 in which the hydrocarbon solvent is a member selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons containing 6 to 15 carbon atoms, inclusive.
Claim 9
Dependent Claim
36 words
The process of claim 4 in which the hydrocarbon solvent is a member selected from the group consisting of aliphatic, cycloaliphatic, and aromatic hydrocarbons which have boiling points between about 69° C. and about 110° C.
Claim 10
Dependent Claim
15 words
The process of claim 4 in which the magnesium metal is in the powdered state.
Claim 11
Dependent Claim
24 words
The process of claim 4 in which the magnesium metal is comprised of particles of diameter equal to or less than about 150 microns.
Claim 12
Dependent Claim
27 words
The process of claim 4 in which the magnesium metal of step (a) is reacted with a methyl halide in the presence of a magnesium activating agent.
Claim 13
Dependent Claim
26 words
The process of claim 10 in which the magnesium of step (a) is thermally activated at a temperature between about 125° C. and about 350° C.
Claim 14
Dependent Claim
22 words
The process of claim 4 in which the mole ratio of magnesium to total halides is between about 1.0 and about 2.0.
Claim 15
Dependent Claim
22 words
The process of claim 4 in which the mole ratio of magnesium to total halides is between about 1.1 and about 1.3.
Claim 16
Dependent Claim
20 words
The process of claim 4 in which the methyl halide is methyl chloride and the n-butyl halide is n-butyl chloride.
Claim 17
Dependent Claim
72 words
A composition of matter comprising the components (a) di-n-butylmagnesium, (b) dimethylmagnesium, and (c) a solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons containing 5 to 20 carbon atoms, inclusive, components (a) and (b) being present in quantities relative to each other such that the n-butyl:methyl mole ratio is between about 0.2:1 and about 5:1, to the exclusion of dialkylmagnesium compounds containing alkyl groups other than n-butyl or methyl.
Claim 18
Dependent Claim
72 words
A composition of matter comprising the components (a) di-n-butylmagnesium, (b) dimethylmagnesium, and (c) a solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons containing 5 to 20 carbon atoms, inclusive, components (a) and (b) being present in quantities relative to each other such that the n-butyl:methyl mole ratio is between about 0.2:1 and about 5:1, to the exclusion of dialkylmagnesium compounds containing alkyl groups other than n-butyl or methyl.
Claim 19
Dependent Claim
31 words
A composition according to claim 15 in which the solvent is a member selected from the group consisting of aliphatic, cycloaliphatic, and aromatic hydrocarbons containing 6 to 15 carbon atoms, inclusive.
Claim 20
Dependent Claim
36 words
A composition according to claim 15 in which the solvent is a member selected from the group consisting of aliphatic, cycloaliphatic, and aromatic hydrocarbons which have boiling points between about 69° C. and about 110° C.
Claim 21
Dependent Claim
30 words
A composition according to claim 15 in which the concentration of dialkylmagnesium in the solvent is from about 0.2 weight percent to about 12 weight percent in terms of magnesium.
Claim 22
Dependent Claim
30 words
A composition according to claim 15 in which the concentration of dialkylmagnesium in the solvent is from about 1 weight percent to about 5 weight percent in terms of magnesium.
Claim 23
Dependent Claim
20 words
A composition according to claim 15 in which the n-butyl:methyl alkyl group ratio is from about 0.5:1 to about 4:1.
Claim 24
Dependent Claim
20 words
A composition according to claim 15 in which the n-butyl:methyl alkyl group ratio is from about 1:1 to about 2:1.
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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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |