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US4224178A
Expired / Lapsed
US
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Method for reducing the crystallinity of a stabilized colloidal composition
Assignee: Individual
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Filing: 1978-07-24
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Granted: 1980-09-23
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Expires: 1998-07-24
Abstract
Abstract A method for the formation of amorphous dispersions derived by the admixing of a stabilized colloidal dispersion of a higher degree of crystallinity with a modifier. The modified dispersions exhibit a shift towards lower particle size distribution. The resulting amorphous dispersions are useful in a wide variety of chemical processes ranging from catalysis and pigments to display devices.
Inventors
- 👤 Nathan Feldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:17
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0039
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said amorphous colloid consists of metals selected from the group consisting of copper, nickel, cobalt and iron and wherein said metal may be part of an alloy, a compound or an elemental state and combinations thereof and wherein said modifier is a surfactant.
Claim 2
Independent Claim
120 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said amorphous colloid consists of metals selected from the group consisting of copper, nickel, cobalt and iron and wherein said metal may be part of an alloy, a compound or an elemental state and combinations thereof and wherein said modifier is a surfactant.
Claim 3
Independent Claim
87 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said modifier is selected from the group of soluble alkylsulfates.
Claim 4
Independent Claim
87 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said modifier is selected from the group of soluble alkylsulfates.
Claim 5
Independent Claim
89 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said amorphous colloidal dispersion comprises of copper-hydrous oxide, gelatin and sodium laurylsulfate.
Claim 6
Independent Claim
89 words
A method for reducing the crystallinity of a stabilized colloidal composition by the steps of admixing a modifier with said stabilized colloidal composition and causing the formation of a relatively amorphous colloidal dispersion and further wherein said stabilized colloidal dispersion or otherwise the crystalline colloidal composition is nucleated in the presence of a colloidal stabilizer and wherein the addition of said modifier does not change the oxidation state of any metal(s) constituting the colloid nucleus and wherein said amorphous colloidal dispersion comprises of copper-hydrous oxide, gelatin and sodium laurylsulfate.
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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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |