Patent US5169969A successfully refreshed from Google Patents.
US5169969A
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Process for forming mixed bimetal alkoxide-carboxylate composition and novel compositions thereof
Assignee: Akzo NV
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Filing: 1991-07-19
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Granted: 1992-12-08
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Expires: 2011-07-19
Abstract
Abstract Mixed bimetallic alkoxide-caraboxylate compositions are formed by reaction of at least two metal alkoxides and a carboxylic acid with elimination of distillable ester by-product therefrom. Hydrolysis of said compositions produce bimetallic hydroxy-carboxylates which, upon calcination, give bimetallic oxides.
Inventors
- 👤 Fawzy G. Sherif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:20
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/003
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
33 words
A process for forming a mixed bimetallic alkoxide-carboxylate composition which comprises reacting at least two different metal alkoxides and a carboxylic acid under substantially anhydrous conditions with elimination of distillable ester by-product therefrom.
Claim 2
Dependent Claim
33 words
A process for forming a mixed bimetallic alkoxide-carboxylate composition which comprises reacting at least two different metal alkoxides and a carboxylic acid under substantially anhydrous conditions with elimination of distillable ester by-product therefrom.
Claim 3
Dependent Claim
17 words
A process as claimed in claim 1 wherein at least one metal is a tetravalent transition metal.
Claim 4
Dependent Claim
17 words
A process as claimed in claim 1 wherein at least one metal is a trivalent transition metal.
Claim 5
Dependent Claim
22 words
A process as claimed in claim 1 wherein the transition metal is selected from the group consisting of aluminum, yttrium and zirconium.
Claim 6
Dependent Claim
24 words
A process as claimed in claim 1 wherein the metals are tetravalent and trivalent metals in a ratio of from about 1:10 to 10:1.
Claim 7
Dependent Claim
16 words
A process as claimed in claim 1 wherein the process is conducted in an organic solvent.
Claim 8
Dependent Claim
14 words
A process as claimed in claim 1 wherein the carboxylic acid is acetic acid.
Claim 9
Dependent Claim
16 words
A process as claimed in claim 5 wherein yttrium and zirconium are present as the metals.
Claim 10
Dependent Claim
18 words
A process as claimed in claim 1 where the process is conducted in the substantial absence of solvent.
Claim 11
Dependent Claim
16 words
A process as claimed in claim 1 where the process is conducted in a non-polar solvent.
Claim 12
Dependent Claim
21 words
A process as claimed in claim 8 wherein the yttrium to zirconium molar ratio varies from about 1:10 to about 10:1.
Claim 13
Dependent Claim
35 words
A process as claimed in claim 1 wherein the mixed metal alkoxide composition is hydrolyzed with water in a non-aqueous solvent to yield a powder which after calcination is suitable for ceramic plasma spray coatings.
Claim 14
Dependent Claim
34 words
A novel mixed heavy metal alkoxide carboxylate having the formula ##STR6## where M is a tetravalent heavy metal, M 1 is a trivalent heavy metal, R is alkyl and R 1 is lower alkyl.
Claim 15
Dependent Claim
34 words
A novel mixed heavy metal alkoxide carboxylate having the formula ##STR6## where M is a tetravalent heavy metal, M 1 is a trivalent heavy metal, R is alkyl and R 1 is lower alkyl.
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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) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |