US4412956A
Expired / Lapsed
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Process for forming alkyl vanadates using a catalyst
Assignee: Akzo America Inc
•
Filing: 1981-07-27
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Granted: 1983-11-01
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Expires: 2001-07-27
Abstract
Abstract Alkyl vanadates are formed by the reaction of vanadium pentoxide and an alkyl alcohol in the presence of an azeotroping solvent to assist in the removal of byproduct water, using an effective amount of a basic nitrogenous compound as a catalyst.
Inventors
- 👤 Alan Abramson
- 👤 George C. Ciomo
- 👤 Gershon J. Davis
- 👤 Edward D. Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:17
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; C07C31/00; C07C31/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
In a process for the formation of alkyl vanadates by the reaction of an alkyl alcohol and vanadium pentoxide in an azeotroping solvent, wherein the improvement comprises the use of a catalytically effective amount of a basic nitrogenous catalyst to increase the yield of product.
Claim 2
Dependent Claim
45 words
In a process for the formation of alkyl vanadates by the reaction of an alkyl alcohol and vanadium pentoxide in an azeotroping solvent, wherein the improvement comprises the use of a catalytically effective amount of a basic nitrogenous catalyst to increase the yield of product.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1 wherein the amount of catalyst is from about 0.1% to about 25%, by weight of the amount of vanadium pentoxide.
Claim 4
Dependent Claim
19 words
A process as claimed in claim 1 wherein the catalyst is one which provides ammonia to the reaction medium.
Claim 5
Dependent Claim
32 words
A process as claimed in claim 1 wherein the catalyst is selected from the group consisting of ammonia; ammonium hydroxide, carbonate, phosphate (dibasic), metavanadate; triethylamine, dimethyl formamide, urea, pyridine, and guanidine carbonate.
Claim 6
Dependent Claim
26 words
A process as claimed in either claim 1 or 2 wherein the catalyst is selected from the group consisting of urea, ammonium carbonate, and mixtures thereof.
Claim 7
Dependent Claim
16 words
A process as claimed in any of claims 1-4 wherein an alkane azeotroping solvent is present.
Claim 8
Dependent Claim
17 words
A process as claimed in any of claims 1-4 wherein heptane is used as the azeotroping solvent.
Claim 9
Dependent Claim
33 words
A process as claimed in any of claims 1-4 wherein heptane is used as the azeotroping solvent and the catalyst is selected from the group consisting of urea, ammonium carbonate, and mixtures thereof.
References Cited (Backward Citations)
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |