CA2337195A1 - Dispersion of fine porous inorganic oxide particles and processes for preparing same - Google Patents
Dispersion of fine porous inorganic oxide particles and processes for preparing same Download PDFInfo
- Publication number
- CA2337195A1 CA2337195A1 CA002337195A CA2337195A CA2337195A1 CA 2337195 A1 CA2337195 A1 CA 2337195A1 CA 002337195 A CA002337195 A CA 002337195A CA 2337195 A CA2337195 A CA 2337195A CA 2337195 A1 CA2337195 A1 CA 2337195A1
- Authority
- CA
- Canada
- Prior art keywords
- dispersion
- particles
- particle size
- median particle
- inorganic 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
Abstract
A dispersion comprising fine porous inorganic oxide particles, e.g., silica gel particles, wherein the particles have a median particle size below three microns. The dispersed particles have a porosity after drying in which at least about 0.50 cc/g of pore volume is from pores having a pore size of 600 .ANG. or less as determined by nitrogen porosimetry. Embodiments prepared from silica gel have porosity after drying in which at least about 0.7 cc/g of pore volume is from pores having a diameter of 600 .ANG. or smaller. The particles of the dispersion also can be described as having viscosity derived pore volume of at least about 0.5 cc/g. The dispersion is prepared by forming a dispersion from inorganic oxides having sufficient rigid structure to maintain porosity after milling and drying. After the inorganic oxide is selected, it is milled to have a median particle size of 0.05 to about 3 microns. In embodiments in which stable dispersions of fine porous particles are desired without the addition of substantial amounts of dispersant, or if dispersions having a median particle size less than one micron are desired, the dispersion is created by, for example, centrifuging the milled slurry to obtain a settled phase and a supernatant phase in which the median particle size is in the range of 0.05 to about 1 micron. The supernatant phase is then separated from the settled phase to create the final product.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11241698A | 1998-07-09 | 1998-07-09 | |
| US09/112,416 | 1998-07-09 | ||
| US09/343,842 | 1999-06-30 | ||
| US09/343,842 US6380265B1 (en) | 1998-07-09 | 1999-06-30 | Dispersion of fine porous inorganic oxide particles and processes for preparing same |
| PCT/US1999/015301 WO2000002814A1 (en) | 1998-07-09 | 1999-07-07 | Dispersion of fine porous inorganic oxide particles and processes for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2337195A1 true CA2337195A1 (en) | 2000-01-20 |
| CA2337195C CA2337195C (en) | 2009-09-08 |
Family
ID=26809928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002337195A Expired - Fee Related CA2337195C (en) | 1998-07-09 | 1999-07-07 | Dispersion of fine porous inorganic oxide particles and processes for preparing same |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JP4628544B2 (en) |
| CN (1) | CN1217857C (en) |
| AU (1) | AU773624B2 (en) |
| BR (1) | BR9911919B1 (en) |
| CA (1) | CA2337195C (en) |
| CZ (1) | CZ2001110A3 (en) |
| EA (1) | EA003200B1 (en) |
| PL (1) | PL202088B1 (en) |
| TR (1) | TR200100018T2 (en) |
| TW (1) | TW593143B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6380265B1 (en) * | 1998-07-09 | 2002-04-30 | W. R. Grace & Co.-Conn. | Dispersion of fine porous inorganic oxide particles and processes for preparing same |
| US7985400B2 (en) * | 2004-01-26 | 2011-07-26 | Lummus Technology Inc. | Method for making mesoporous or combined mesoporous and microporous inorganic oxides |
| DE102004006113A1 (en) * | 2004-02-06 | 2005-08-25 | Basell Polyolefine Gmbh | Preparation of support for catalysts e.g. hydrogenation catalyst involves producing hydrogel; milling to give finely particulate hydrogel having particles with specific particle size; producing slurry; and drying the slurry |
| WO2006129590A1 (en) | 2005-05-31 | 2006-12-07 | Matsushita Electric Industrial Co., Ltd. | Fluorescent lamp and process for producing the same, and illuminator |
| CN104350113B (en) * | 2012-06-05 | 2018-08-17 | 陶氏环球技术有限公司 | Water-based paint compositions with improved stability |
| JP6596880B2 (en) * | 2015-03-31 | 2019-10-30 | 大日本印刷株式会社 | Interior paint |
| CN108883934A (en) * | 2016-02-02 | 2018-11-23 | M技术株式会社 | The accurate method of modifying of particle dispersion liquid |
| GB201913817D0 (en) * | 2019-09-25 | 2019-11-06 | Johnson Matthey Plc | Process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816574C2 (en) * | 1978-04-17 | 1988-09-29 | Merck Patent Gmbh, 6100 Darmstadt | Fluorescent indicators for use in chromatography and sorbents containing the same |
| JPH05170424A (en) * | 1991-12-24 | 1993-07-09 | Nittetsu Mining Co Ltd | Production of silica sol |
| JP3454554B2 (en) * | 1993-12-28 | 2003-10-06 | 水澤化学工業株式会社 | Amorphous silica granules and production method thereof |
| JP3719686B2 (en) * | 1995-07-13 | 2005-11-24 | 東ソー・シリカ株式会社 | Silica gel for filter media |
-
1999
- 1999-07-07 EA EA200100123A patent/EA003200B1/en not_active IP Right Cessation
- 1999-07-07 CZ CZ2001110A patent/CZ2001110A3/en unknown
- 1999-07-07 JP JP2000559049A patent/JP4628544B2/en not_active Expired - Lifetime
- 1999-07-07 TR TR2001/00018T patent/TR200100018T2/en unknown
- 1999-07-07 PL PL346122A patent/PL202088B1/en unknown
- 1999-07-07 BR BRPI9911919-6A patent/BR9911919B1/en not_active IP Right Cessation
- 1999-07-07 AU AU52086/99A patent/AU773624B2/en not_active Expired
- 1999-07-07 CA CA002337195A patent/CA2337195C/en not_active Expired - Fee Related
- 1999-07-07 CN CN998122831A patent/CN1217857C/en not_active Expired - Lifetime
- 1999-07-19 TW TW088111587A patent/TW593143B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EA003200B1 (en) | 2003-02-27 |
| BR9911919A (en) | 2001-12-11 |
| PL346122A1 (en) | 2002-01-28 |
| AU773624B2 (en) | 2004-05-27 |
| CN1323277A (en) | 2001-11-21 |
| AU5208699A (en) | 2000-02-01 |
| CA2337195C (en) | 2009-09-08 |
| TW593143B (en) | 2004-06-21 |
| PL202088B1 (en) | 2009-05-29 |
| CN1217857C (en) | 2005-09-07 |
| CZ2001110A3 (en) | 2002-05-15 |
| TR200100018T2 (en) | 2002-01-21 |
| JP4628544B2 (en) | 2011-02-09 |
| JP2004513049A (en) | 2004-04-30 |
| EA200100123A1 (en) | 2001-08-27 |
| BR9911919B1 (en) | 2009-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |