JPS5614413A - Manufacture of water repellent silica - Google Patents
Manufacture of water repellent silicaInfo
- Publication number
- JPS5614413A JPS5614413A JP8650279A JP8650279A JPS5614413A JP S5614413 A JPS5614413 A JP S5614413A JP 8650279 A JP8650279 A JP 8650279A JP 8650279 A JP8650279 A JP 8650279A JP S5614413 A JPS5614413 A JP S5614413A
- Authority
- JP
- Japan
- Prior art keywords
- org
- water repellent
- sio
- water
- repellent silica
- 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
Landscapes
- Silicon Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
PURPOSE: To obtain water repellent silica having high water repellency and not requiring heat treatment especially as after-treatment by reacting SiO2 and an org. Si halide compound in the presence of an org. solvent miscible with water.
CONSTITUTION: SiO2 obtd. preferably by a wet method and an org. Si halide compound such as trimethylmonochlorosilane are reacted in an org. solvent such as methanol or ethanol miscible with water. Water repellent silica thus formed is then separated from the liq. reaction product by filtration, centrifugal separation or other method. The molar ratio of the org. Si halide compound to the SiO2 is 1.0W 1.5, and they are reacted especially preferably at 50°CWthe b.p. of the reaction system for 0.5W2hr.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8650279A JPS591213B2 (en) | 1979-07-10 | 1979-07-10 | "Hatsu" water silica manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8650279A JPS591213B2 (en) | 1979-07-10 | 1979-07-10 | "Hatsu" water silica manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5614413A true JPS5614413A (en) | 1981-02-12 |
JPS591213B2 JPS591213B2 (en) | 1984-01-11 |
Family
ID=13888746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8650279A Expired JPS591213B2 (en) | 1979-07-10 | 1979-07-10 | "Hatsu" water silica manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS591213B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6852299B2 (en) | 2000-04-28 | 2005-02-08 | Mitsui Chemicals, Inc. | Water-repellent porous silica, method for preparation thereof and use thereof |
-
1979
- 1979-07-10 JP JP8650279A patent/JPS591213B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6852299B2 (en) | 2000-04-28 | 2005-02-08 | Mitsui Chemicals, Inc. | Water-repellent porous silica, method for preparation thereof and use thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS591213B2 (en) | 1984-01-11 |
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