US4348301A
Expired / Lapsed
US
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Process for making colloidal sols of antimony pentoxide in an aqueous medium
Assignee: Laurel Industries Inc
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Filing: 1976-08-10
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Granted: 1982-09-07
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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 a particulate antimony component selected from the group consisting of antimony metal, oxidizable antimony oxides and mixtures thereof into an essentially aqueous medium and contacting said antimony component with 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 the antimony component to colloidal particles of hydrous antimony pentoxide.
Inventors
- 👤 Charles E. Crompton
- 👤 Abdulla M. Z. Kazi
- 👤 Inderjit S. Soni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:35
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C01; C01G; C01G30/00; C01G30/004; C01G30/005; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; F; F02; F02M; F02M25/00; F02M25/08; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
91 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing a particulate antimony component selected from the group consisting of, oxidizable antimony oxides and mixtures thereof into an essentially aqueous medium which contains no stabilizers and contacting said antimony component with hydrogen peroxide in the aqueous medium 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 the antimony component to colloidal particles of hydrous antimony pentoxide.
Claim 2
Dependent Claim
91 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing a particulate antimony component selected from the group consisting of, oxidizable antimony oxides and mixtures thereof into an essentially aqueous medium which contains no stabilizers and contacting said antimony component with hydrogen peroxide in the aqueous medium 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 the antimony component to colloidal particles of hydrous antimony pentoxide.
Claim 3
Dependent Claim
58 words
The process of claim 1 further comprising the step of introducing a water-soluble stabilizer selected from the group consisting of alkanolamines, alkanolamine salts, aliphatic alpha-hydroxy carboxylic acids, and aliphatic polyhydroxy alcohols having vicinal hydroxyl groups into the aqueous medium after at least a portion of the antimony component has been converted to colloidal particles of hydrous antimony pentoxide.
Claim 4
Dependent Claim
204 words
The process of claim 2 wherein the stabilizer is (1) an alkanolamine selected from the group consisting of ##STR2## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are the same or different from one another; R 1 and R 2 are selected from the group consisting of hydrogen and alkylenehydroxy radicals of the type --(CH 2 ) n --OH and --(CH 2 ) n --O-- x (CH 2 ) m --OH; R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are selected from the group consisting of alkylenehydroxy radicals of the type --(CH 2 ) n --OH and alkylene hydroxy radicals of the type --(CH 2 ) n --O-- x (CH 2 ) m --OH, wherein m and n are integers from 1 to 6, p and g are integers from 1 to 10, x is an integer from 1 to 2, and y is an integer from 0 to 7; or (2) a salt of an alkanolamine as defined in (1) and an acid selected from the group consisting of boric acid, phosphoric acid and benzoic acid.
Claim 5
Dependent Claim
54 words
The process of claim 3 wherein the molar ratio of alkanolamine or alkanolamine salt to antimony present in the antimony component is from about 0.05:1 to about 2:1 and the concentration of antimony, pentoxide, expressed as elemental antimony in the dispersion is from about 10% to about 40% of the total weight of dispersion.
Claim 6
Dependent Claim
40 words
The process of claim 3 wherein the stabilizer is an alkanolamine selected from the group consisting of diethanolamine and triethanolamine and the molar ratio of alkanolamine to antimony present in the antimony component is from about 0.05 to about 0.1:1.
Claim 7
Dependent Claim
20 words
The process of claim 2 wherein the stabilizer is an aliphatic alpha-hydroxy carboxylic acid having 2 to 6 carbon atoms.
Claim 8
Dependent Claim
55 words
The process of claim 6 wherein the molar ratio of aliphatic alpha-hydroxy carboxylic acid to antimony present in the antimony component is from about 0.05:1 to about 2:1 and the concentration of antimony, pentoxide, expressed as elemental antimony in the dispersion is from about 10% to about 40% of the total weight of the dispersion.
Claim 9
Dependent Claim
50 words
The process of claim 6 wherein the alpha-hydroxy carboxylic acid is selected from the group consisting of tartaric acid, gluconic acid, malic acid, citric acid, hydroxyacetic acid, lactic acid, and glyceric acid, and the molar ratio of alpha-hydroxy carboxylic acid to antimony present in the antimony component is about 0.05:1.
Claim 10
Dependent Claim
23 words
The process of claim 2 wherein the stabilizer is an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and 2 to 6 carbon atoms.
Claim 11
Dependent Claim
53 words
The process of claim 9 wherein the molar ratio of polyhydroxy alcohol to antimony present in the antimony component is from about 0.05:1 to about 2:1 and the concentration of antimony pentoxide expressed as elemental antimony, in the dispersion is from about 10% to about 40% of the total weight of the dispersion.
Claim 12
Dependent Claim
25 words
The process of claim 9 wherein the polyhydroxy alcohol is selected from the group consisting of glycerol, ethylene glycol, 1,2-propanediol, 1,2-butanediol, 2,4-butanediol, and trimethylol propane.
Claim 13
Dependent Claim
121 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing a particulate antimony component selected from the group consisting of oxidizable antimony oxides and mixtures thereof into a dispersion medium which is essentially aqueous, said dispersion medium containing a stabilizing amount of a component selected from the group consisting of alkanolamines, alkanolamine salts, aliphatic alphahydroxy carboxylic acids, and aliphatic polyhydroxy alcohols having vicinal hydroxyl groups, contacting said antimony components with hydrogen peroxide in said dispersion medium at a temperature of from about 0 degrees centigrade to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of the antimony component to colloidal particles of hydrous antimony pentoxide.
Claim 14
Dependent Claim
121 words
A process for making a colloidal dispersion of hydrous antimony pentoxide particles comprising introducing a particulate antimony component selected from the group consisting of oxidizable antimony oxides and mixtures thereof into a dispersion medium which is essentially aqueous, said dispersion medium containing a stabilizing amount of a component selected from the group consisting of alkanolamines, alkanolamine salts, aliphatic alphahydroxy carboxylic acids, and aliphatic polyhydroxy alcohols having vicinal hydroxyl groups, contacting said antimony components with hydrogen peroxide in said dispersion medium at a temperature of from about 0 degrees centigrade to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of the antimony component to colloidal particles of hydrous antimony pentoxide.
Claim 15
Dependent Claim
204 words
The process of claim 12 wherein the stabilizer is (1) an alkanolamine selected from the group consisting of ##STR3## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are the same or different from one another; R 1 and R 2 are selected from the group consisting of hydrogen and alkylenehydroxy radicals of the type --(CH 2 ) n --OH and --(CH 2 ) n --O-- x (CH 2 ) m --OH; R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are selected from the group consisting of alkylenehydroxy radicals of the type --(CH 2 ) n --OH and alkylene hydroxy radicals of the type --(CH 2 ) n --O-- x (CH 2 ) m --OH, wherein m and n are integers from 1 to 6, p and g are integers from 1 to 10, x is an integer from 1 to 2, and y is an integer from 0 to 7; or (2) a salt of an alkanolamine as defined in (1) and an acid selected from the group consisting of boric acid, phosphoric acid and benzoic acid.
Claim 16
Dependent Claim
55 words
The process of claim 13 wherein the molar ratio of alkanolamine or alkanolamine salt to antimony is from about 0.05:1 to about 2:1 and the concentration of antimony present in the antimony component pentoxide, expressed as elemental antimony in the dispersion is from about 10% to about 40% of the total weight of the dispersion.
Claim 17
Dependent Claim
36 words
The process of claim 13 wherein the stabilizer is an alkanolamine selected from the group consisting of diethanolamine and triethanolamine and the molar ratio of alkanolamine to antimony present in the antimony component is about 0.05:1.
Claim 18
Dependent Claim
39 words
The process of claim 13 wherein the stabilizer is alkanolamine salt selected from the group consisting of diethanolamine phosphate and triethanolamine phosphate and the molar ratio of alkanolamine salt to antimony present in the antimony component is about 0.05:1.
Claim 19
Dependent Claim
20 words
The process of claim 12 wherein the stabilizer is an aliphatic alpha-hydroxy carboxylic acid having 2 to 6 carbon atoms.
Claim 20
Dependent Claim
55 words
The process of claim 17 wherein the molar ratio of aliphatic alpha-hydroxy carboxylic acid to antimony present in the antimony component is from about 0.05:1 to about 2:1 and the concentration of antimony, pentoxide, expressed as elemental antimony in the dispersion is from about 10% to about 40% of the total weight of the dispersion.
Claim 21
Dependent Claim
50 words
The process of claim 17 wherein the alpha-hydroxy carboxylic acid is selected from the group consisting of tartaric acid, gluconic acid, malic acid, citric acid, hydroxyacetic acid, lactic acid, and glyceric acid, and the molar ratio of alpha-hydroxy carboxylic acid to antimony present in the antimony component is about 0.05:1.
Claim 22
Dependent Claim
23 words
The process of claim 12 wherein the stabilizer is an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and 2 to 6 carbon atoms.
Claim 23
Dependent Claim
53 words
The process of claim 20 wherein the molar ratio of polyhydroxy alcohol to antimony present in the antimony component is from about 0.05:1 to about 2:1 and the concentration of antimony, pentoxide, expressed as elemental antimony, in the dispersion is from about 10% to about 40% of the total weight of the dispersion.
Claim 24
Dependent Claim
25 words
The process of claim 20 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.
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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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |