US3903122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid octa 2-lower alkoxy ethoxides of aluminum and (magnesium or calcium)
Assignee: OI Glass Inc
•
Filing: 1972-12-11
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Granted: 1975-09-02
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Expires: 1992-12-11
Abstract
Abstract Alkoxy ethoxides, for example 2-methoxy ethoxide, of aluminum and magnesium or aluminum and calcium, are provided. These compounds are of the formula MAl2(O-CH2-CH2-O-R)8 wherein M is calcium or magnesium and wherein R is an alkyl of 1 to 4 carbon atoms; they are liquids at about 25*C. and about 1 atmosphere of pressure and are produced by reacting aluminum and magnesium or calcium with mono-alkyl ethers of ethylene glycol. Methods for hydrolyzing the compounds to obtain oxides of the formula MgAl2O4 and CaAl2O4 are disclosed. For example, magnesium aluminum octa(2 methoxy ethoxide) is produced, using ethylene glycol monomethyl ether (methyl ''''Cellosolve'''') as a reagent; the material is hydrolyzed and heated to form MgAl2O4.
Inventors
- 👤 Ian M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:23
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/16; C01F7/164; C01F7/162; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
39 words
As a composition of matter, a compound which is liquid at about 25* C. and about 1 atmosphere of pressure, said compound being of the formula MAl2(O-CH2-CH2-O-R)8 wherein M is Ca or Mg and R is a C1-C4 alkyl.
Claim 2
Dependent Claim
39 words
As a composition of matter, a compound which is liquid at about 25* C. and about 1 atmosphere of pressure, said compound being of the formula MAl2(O-CH2-CH2-O-R)8 wherein M is Ca or Mg and R is a C1-C4 alkyl.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein M is Ca.
Claim 4
Dependent Claim
9 words
The composition of claim 2 wherein R is methyl.
Claim 5
Dependent Claim
9 words
The composition of claim 1 wherein M is Mg.
Claim 6
Dependent Claim
9 words
The composition of claim 4 wherein R is methyl.
Claim 7
Dependent Claim
9 words
The composition of claim 4 wherein R is ethyl.
Claim 8
Dependent Claim
10 words
The composition of claim 4 wherein R is normal butyl.
Claim 9
Independent Claim
117 words
THE METHOD FOR MAKING A COMPOUND WHICH IS LIQUID AT ABOUT 25*C AND ABOUT 1 ATMOSPHERE OF PRESSURE WHEREIN SAID COMPOUND IS OF THE FORMULA MA12(O-CH2-CH2-O-R)8 WHEREIN M IS CALCIUM OR MAGNESIUM AND R IS A C1-C4 ALKYL COMPRISING THE STEPS OF HEATING MG OR CA AND A1 AND A COMPOUND OF THE FORMULA R-O-CH2-CH2-O-H WHEREIN R IS DESCRIBED AS ABOVE AND WHEREIN THE RATIO OF THE GRAM ATOMS OF ALUMINUM TO MAGNESIUM OR CALCIUM IS ABOUT 2:1 OR LESS AND WHEREIN SAID R-O-CH2-CH2-O-H COMPOUND IS PRESENT IN AN AMOUNT IN EXCESS OF THE STOICHIOMETRIC AMOUNT FOR A PERIOD OF TIME SUFFICIENT TO FORM SAID MA12(O-CH2-CH2O-R)8 COMPOUND AND SEPARATING SAID MA12(O-CH2-CH, 2-O-R)8 COMPOUND FROM THE REACTION MASS.
Claim 10
Independent Claim
117 words
THE METHOD FOR MAKING A COMPOUND WHICH IS LIQUID AT ABOUT 25*C AND ABOUT 1 ATMOSPHERE OF PRESSURE WHEREIN SAID COMPOUND IS OF THE FORMULA MA12(O-CH2-CH2-O-R)8 WHEREIN M IS CALCIUM OR MAGNESIUM AND R IS A C1-C4 ALKYL COMPRISING THE STEPS OF HEATING MG OR CA AND A1 AND A COMPOUND OF THE FORMULA R-O-CH2-CH2-O-H WHEREIN R IS DESCRIBED AS ABOVE AND WHEREIN THE RATIO OF THE GRAM ATOMS OF ALUMINUM TO MAGNESIUM OR CALCIUM IS ABOUT 2:1 OR LESS AND WHEREIN SAID R-O-CH2-CH2-O-H COMPOUND IS PRESENT IN AN AMOUNT IN EXCESS OF THE STOICHIOMETRIC AMOUNT FOR A PERIOD OF TIME SUFFICIENT TO FORM SAID MA12(O-CH2-CH2O-R)8 COMPOUND AND SEPARATING SAID MA12(O-CH2-CH, 2-O-R)8 COMPOUND FROM THE REACTION MASS.
Claim 11
Dependent Claim
21 words
The method of claim 8 wherein said excess is removed from the reaction mass prior to separation of said MAl2(O-CH2-CH2-OR)8 compound.
Claim 12
Dependent Claim
23 words
The method of claim 9 wherein the ratio of the gram atoms of aluminum to magnesium is between about 1.9 to about 2:1.
Claim 13
Dependent Claim
32 words
The method of claim 10 wherein the ratio of the number of moles of said R-O-CH2-CH2-O-H compound to the gram atoms of Al is in excess of about 4 to about 8:1.
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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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |