Patent Profile
| Patent No: | IN287457 [India] | Application No: | 0954DEL2007 |
| Title: | Process for the manufacture of finely divided precipitated silica | ||
| Issue Date: | 18-09-2017 | File Date: | 03-05-2007 |
| Inventor(s): | RAKSH VIR JASRA, HAREH MAHIPTALAL MODY, RAJESH SHANTILAL SOMANI, HARI CHAND BAJAJ, DIPAK BALWANTRAI SHUKLA, NIRAJ RAMESH | ||
| IPC Classification: | C01B33/143 | ||
| 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 deg to 90 deg 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. | ||
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