CA2249609A1 - Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating - Google Patents
Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coatingInfo
- Publication number
- CA2249609A1 CA2249609A1 CA002249609A CA2249609A CA2249609A1 CA 2249609 A1 CA2249609 A1 CA 2249609A1 CA 002249609 A CA002249609 A CA 002249609A CA 2249609 A CA2249609 A CA 2249609A CA 2249609 A1 CA2249609 A1 CA 2249609A1
- Authority
- CA
- Canada
- Prior art keywords
- oxide particles
- free
- nanoscalar
- hydrolysis
- iron oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002245 particle Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title 2
- 239000011248 coating agent Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 230000007062 hydrolysis Effects 0.000 title 1
- 238000006460 hydrolysis reaction Methods 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 238000009835 boiling Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 238000002604 ultrasonography Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007900 aqueous suspension Substances 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 239000003495 polar organic solvent Substances 0.000 abstract 1
Landscapes
- Compounds Of Iron (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
A process for preparing an agglomerate-free suspension of nanosize iron-containing oxide particles coated in a stable manner comprises preparing an aqueous suspension of nanosize iron-containing oxide particles which are partially or completely in the form of agglomerates; adding a trialkoxysilane and a water-miscible polar organic solvent which has a boiling point at least 10° C. higher than the boiling point of water; treating the resulting suspension with ultrasound until at least 70% of the particles present are in the range of ~20% of the average particle diameter; removing the water by distillation under the action of ultrasound; and separating the non-disintegrated agglomerates.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19614136.2 | 1996-04-10 | ||
| DE19614136A DE19614136A1 (en) | 1996-04-10 | 1996-04-10 | Process for the production of agglomerate-free nanoscale iron oxide particles with a hydrolysis-resistant coating |
| PCT/EP1997/001758 WO1997038058A1 (en) | 1996-04-10 | 1997-04-09 | Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2249609A1 true CA2249609A1 (en) | 1997-10-16 |
| CA2249609C CA2249609C (en) | 2006-06-13 |
Family
ID=36587577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002249609A Expired - Lifetime CA2249609C (en) | 1996-04-10 | 1997-04-09 | Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2249609C (en) |
-
1997
- 1997-04-09 CA CA002249609A patent/CA2249609C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2249609C (en) | 2006-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2637597A (en) | Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating | |
| WO2000009446A8 (en) | Compositions for forming transparent conductive nanoparticle coatings and process of preparation therefor | |
| AU2910100A (en) | Nanoparticulate, redispersible zinc oxide gels | |
| IE44241L (en) | Carbon black-containing pigments | |
| CA2213660A1 (en) | Aerosol containing beclamethasone nanoparticle dispersions | |
| EP1199123A4 (en) | Ultra fine composite metal particles | |
| AU2002366728A1 (en) | Surface modified zinc oxide for the production of nanoparticulate dispersions | |
| CA2163237A1 (en) | Method for the subcritical drying of aerogels | |
| GB2275876B (en) | Grinding alkaline earth metal pigments | |
| CA2313544A1 (en) | Anionic polymer products and processes | |
| AU2171699A (en) | Association based on microfibrils and mineral particles, preparation and uses | |
| WO2002055186A3 (en) | Surface modified semiconductive and metallic nanoparticlse having enhanced dispersibility in aqueous media | |
| WO1989011154A1 (en) | Encapsulated superparamagnetic particles | |
| IL125779A0 (en) | Titanium dioxide particles | |
| AU6849490A (en) | Magnetizable "core-shell" microspheres based on crosslinked organopolysiloxane, process for their prepatration and their application in biology | |
| ZA97722B (en) | Grafted copolymers, their process of manufacture, the compositions containing them and their use for the preparation of pigmentary dispersions in an aqueous and/or organic medium. | |
| SG81903A1 (en) | Preparation of polymer powders which are redispersible in an aqueous medium | |
| EP0921163A3 (en) | Pigment composition and aqueous pigment dispersion prepared therefrom | |
| EP0841345A4 (en) | Bacterial cellulose concentrate and method for treating said concentrate | |
| CA2249609A1 (en) | Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating | |
| CA2058460A1 (en) | Silica, formulation process thereof and use thereof as loads for paper for example | |
| AU6849590A (en) | Magnetizable microspheres based on polysilsesquioxane, the process for their preparation and their application in biology | |
| EP0801030A3 (en) | Production of titanium oxide | |
| ATE235982T1 (en) | PRODUCTION PROCESS OF TANTALUM AND NIOBIUM POWDER WITH HIGHLY DEVELOPED SURFACE | |
| CA2243774A1 (en) | A slurry containing an agglomerated carbonate-containing pigment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20170410 |