US4670573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated preparation of metal alkoxides
Assignee: Akzo America Inc
•
Filing: 1984-12-17
•
Granted: 1987-06-02
•
Expires: 2004-12-17
Abstract
Abstract There are disclosed improved methods for preparing metal alkoxides from metals and alcohols. The methods involve dry-grinding the metal in an inert atmosphere prior to the addition of the alcohol. When an activator is used, it is usually ballmilled with the metal. Higher yields are obtained, particularly when the metal and alcohol are not very reactive absent an activator. Typical metals are those from Groups 2A, 2B, 3A, and 3B, particularly aluminum, magnesium, and yttrium. Typical alcohols are those which contain up to 16 carbon atoms, particularly those containing 4 or more carbon atoms.
Inventors
- 👤 Carl C. Greco
- 👤 Kelly B. Triplett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:38
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
An improved process for preparing a metal alkoxide by reacting a metal, M, having a particle size less than 50 mesh and wherein M is selected from aluminum, barium, magnesium and yttrium with an alcohol, ROH, comtaining up to 16 carbon atoms, in the presence of an activator, A, selected fron the group consisting of butyl carbitol, sodium butyl carbitol, mercuric chloride, and iodine; wherein the improvement comprises, the prestep of drygrinding M with A.
Claim 2
Dependent Claim
75 words
An improved process for preparing a metal alkoxide by reacting a metal, M, having a particle size less than 50 mesh and wherein M is selected from aluminum, barium, magnesium and yttrium with an alcohol, ROH, comtaining up to 16 carbon atoms, in the presence of an activator, A, selected fron the group consisting of butyl carbitol, sodium butyl carbitol, mercuric chloride, and iodine; wherein the improvement comprises, the prestep of drygrinding M with A.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein A is a catalyst for the reaction of M with ROH.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the prestep comprises ball-milling M with A.
Claim 5
Dependent Claim
38 words
The process of claim 3 wherein A is a liquid and which comprises ball-milling at least until there is a significant amount of agglomeration of M and A throughout the whole of the mixture of M and A.
Claim 6
Dependent Claim
20 words
The process of claim 4 which comprises ball-milling for a period of at least 8 hours in an inert atmosphere.
Claim 7
Dependent Claim
38 words
The process of claim 3 wherein the mixture being ball-milled further comprises an alcohol containing up to 16 carbon atoms in an amount of up to 10 weight percent based upon the weight of the weight of M.
Claim 8
Dependent Claim
17 words
The process of claim 6 wherein the alcohol in the mixture contains up to 5 carbon atoms.
Claim 9
Dependent Claim
28 words
The process of claim 6 wherein the alcohol in the mixture has the same structural formula as the alcohol ROH that is used in the subsequent process step.
Claim 10
Dependent Claim
35 words
The process of claim 1 wherein M is in the form of fine particles having a surface oxide layer in an amount of up to 1% by weight based on the weight of metal M.
Claim 11
Dependent Claim
26 words
The process of claim 1 wherein the activator is present in an amount of up to 10% of weight based upon the weight of the metal.
Claim 12
Dependent Claim
32 words
The process of claim 2 wherein A is capable of reacting with M to form a reaction product, and the reaction product is an autocatalyst for the reaction of M with ROH.
Claim 13
Dependent Claim
25 words
The process of claim 2 wherein the catalyst is present in an amount of up to 10 weight percent based on the weight of metal.
Claim 14
Dependent Claim
17 words
The process of claim 1 wherein A is a noncatalyst for the reaction of M with ROH.
Claim 15
Dependent Claim
15 words
The process of claim 13 wherein A is capable of reacting with oxides of M.
Claim 16
Dependent Claim
13 words
The process of claim 13 wherein A is capable of reacting with M.
Claim 17
Dependent Claim
37 words
The process of claim 1 which comprises alcohols selected from the group consisting of ethyl alcohol; isopropyl alcohol; n-propyl alcohol; n-butyl alcohol; isobutyl alcohol; sec-butyl alcohol; n-amyl alcohol; isoamyl alcohol; n-hexyl alcohol; 2-ethylhexyl alcohol; and mixtures thereof.
References Cited (Backward Citations)
US2666076A
Cited
CA517360A
Cited
GB727923A
Cited
US2796326A
Cited
US2845447A
Cited
US2927937A
Cited
US3083218A
Cited
US3094546A
Cited
US3239568A
Cited
US3523130A
Cited
US3523129A
Cited
US3507896A
Cited
US3641077A
Cited
US3717666A
Cited
US3890166A
Cited
US3963482A
Cited
US4042636A
Cited
DE2612642A1
Cited
US4288604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |