Patent Profile
| Patent No: | US8252261 [USA] | Application No: | 12/112,551 |
| Title: | Process for the preparation of finely divided precipitated silica | ||
| Issue Date: | 28-08-2012 | File Date: | 30-04-2008 |
| Inventor(s): | Jasra, Raksh Vir; Mody, Haresh Mahipatlal; Somani, Rajesh Shantilal; Bajaj, Hari Chand; Shukla, Dipak Balwantrai; Vyas, Niraj Rameshchandra | ||
| IPC Classification: | C01B33/12 | ||
| Abstract: | The present invention provides a process for the preparation of finely divided precipitated silica. Finely divided precipitated silica is prepared by neutralization of alkali silicate solution, under continuous stirring, at 60.degree. to 90.degree. C. in presence of alkali metal salt as coagulating agent, in various neutralization steps during which neutralization is interrupted for specific time. Further acidic silica sol, is added until 60 to 80% of total alkali is neutralized. The reaction mixture is then aged at least for 3 minute under continuous agitation, followed by circulation through centrifugal pump at an appropriate rate. | ||
| Licensing Option: | Laboratory scale know-how is available. | ||
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: director[at]csmcri[dot]res[dot]in
:91-278- 2569496 Ext. 6000, 6010
:https://www.csmcri.res.in
Industrial Applications
Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]
Inorganic materials [Chemistry, Chemical Processes]