US4051064A
Expired / Lapsed
US
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Process for making colloidal sols of antimony pentoxide in polyhydroxy alcohols
Assignee: Chemetron Corp
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Filing: 1976-08-10
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Granted: 1977-09-27
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Expires: 1996-08-10
Abstract
Abstract A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing particles of an oxidizable antimony oxide into an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and contacting said particles with aqueous hydrogen peroxide at a temperature of from about 0° C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.
Inventors
- 👤 Charles E. Crompton
- 👤 Abdulla M. Z. Kazi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:36
CPC Classifications
B; B82; B82Y; B82Y30/00; B01; B01J; B01J13/00; B01J13/0004; B01J13/0026; C; C01; C01G; C01G30/00; C01G30/004; C01G30/005; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C01P; C01P2004/00; C01P2004/60; C01P2004/64
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing particles of an oxidizable antimony oxide into an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and contacting said particles with aqueous hydrogen peroxide at a temperature of from about 0° C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.
Claim 2
Dependent Claim
76 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing particles of an oxidizable antimony oxide into an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and contacting said particles with aqueous hydrogen peroxide at a temperature of from about 0° C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the polyhydroxy alcohol contains 2 to 6 carbon atoms.
Claim 4
Dependent Claim
24 words
The process of claim 2 wherein the polyhydroxy alcohol is selected from the group consisting of glycerol, ethylene glycol, 1,2-propanediol, 1,2-butanediol, 2,3-butanedio and trimethylolpropane.
Claim 5
Dependent Claim
33 words
The process of claim 1 further characterized by contacting said particles with aqueous hydrogen peroxide in the presence of a halogen acid selected from the group consisting of hydrogen chloride and hydrogen bromide.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein the polyhydroxy alcohol contains 2 to 6 carbon atoms.
Claim 7
Dependent Claim
26 words
The process of claim 5 wherein the polyhydroxy alcohol is selected from the group consisting of glycerol, ethylene glycol, 1,2-propanediol, 1,2-butanediol, 2,3 butanediol, and trimethylol propane.
Claim 8
Dependent Claim
21 words
The process of claim 6 wherein the molar ratio of halogen acid to antimony is from about 0.1:1 to about 1:1.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein the halogen acid is hydrogen chloride and the molar ratio of halogen acid to antimony is about 0.5:1.
Claim 10
Dependent Claim
18 words
The process of claim 8 wherein the reaction temperature is from about 50° C to about 105° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |