Process for the preparation of finely divided precipitated silica
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° to 90° C. in presence of alkali metal salt as coagulating agent, in vari...
Gespeichert in:
| Hauptverfasser: | , , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | SOMANI RAJESH SHANTILAL BAJAJ HARI CHAND MODY HARESH MAHIPATLAL SHUKLA DIPAK BALWANTRAI VYAS NIRAJ RAMESHCHANDRA JASRA RAKSH VIR |
| description | 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° to 90° 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. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US8252261B2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US8252261B2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US8252261B23</originalsourceid><addsrcrecordid>eNrjZHAMKMpPTi0uVkjLL1IoyUhVKChKLUgsSizJzM9TyE9TSMvMS82pVEjJLMtMSU0BySZnFmSWJJYAOcWZOZnJiTwMrGmJOcWpvFCam0HBzTXE2UM3tSA_PrW4IDE5NS-1JD402MLI1MjIzNDJyJgIJQC9gjGi</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Process for the preparation of finely divided precipitated silica</title><source>esp@cenet</source><creator>SOMANI RAJESH SHANTILAL ; BAJAJ HARI CHAND ; MODY HARESH MAHIPATLAL ; SHUKLA DIPAK BALWANTRAI ; VYAS NIRAJ RAMESHCHANDRA ; JASRA RAKSH VIR</creator><creatorcontrib>SOMANI RAJESH SHANTILAL ; BAJAJ HARI CHAND ; MODY HARESH MAHIPATLAL ; SHUKLA DIPAK BALWANTRAI ; VYAS NIRAJ RAMESHCHANDRA ; JASRA RAKSH VIR</creatorcontrib><description>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° to 90° 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.</description><language>eng</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120828&DB=EPODOC&CC=US&NR=8252261B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25555,76308</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120828&DB=EPODOC&CC=US&NR=8252261B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SOMANI RAJESH SHANTILAL</creatorcontrib><creatorcontrib>BAJAJ HARI CHAND</creatorcontrib><creatorcontrib>MODY HARESH MAHIPATLAL</creatorcontrib><creatorcontrib>SHUKLA DIPAK BALWANTRAI</creatorcontrib><creatorcontrib>VYAS NIRAJ RAMESHCHANDRA</creatorcontrib><creatorcontrib>JASRA RAKSH VIR</creatorcontrib><title>Process for the preparation of finely divided precipitated silica</title><description>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° to 90° 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.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHAMKMpPTi0uVkjLL1IoyUhVKChKLUgsSizJzM9TyE9TSMvMS82pVEjJLMtMSU0BySZnFmSWJJYAOcWZOZnJiTwMrGmJOcWpvFCam0HBzTXE2UM3tSA_PrW4IDE5NS-1JD402MLI1MjIzNDJyJgIJQC9gjGi</recordid><startdate>20120828</startdate><enddate>20120828</enddate><creator>SOMANI RAJESH SHANTILAL</creator><creator>BAJAJ HARI CHAND</creator><creator>MODY HARESH MAHIPATLAL</creator><creator>SHUKLA DIPAK BALWANTRAI</creator><creator>VYAS NIRAJ RAMESHCHANDRA</creator><creator>JASRA RAKSH VIR</creator><scope>EVB</scope></search><sort><creationdate>20120828</creationdate><title>Process for the preparation of finely divided precipitated silica</title><author>SOMANI RAJESH SHANTILAL ; BAJAJ HARI CHAND ; MODY HARESH MAHIPATLAL ; SHUKLA DIPAK BALWANTRAI ; VYAS NIRAJ RAMESHCHANDRA ; JASRA RAKSH VIR</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US8252261B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2012</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>SOMANI RAJESH SHANTILAL</creatorcontrib><creatorcontrib>BAJAJ HARI CHAND</creatorcontrib><creatorcontrib>MODY HARESH MAHIPATLAL</creatorcontrib><creatorcontrib>SHUKLA DIPAK BALWANTRAI</creatorcontrib><creatorcontrib>VYAS NIRAJ RAMESHCHANDRA</creatorcontrib><creatorcontrib>JASRA RAKSH VIR</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SOMANI RAJESH SHANTILAL</au><au>BAJAJ HARI CHAND</au><au>MODY HARESH MAHIPATLAL</au><au>SHUKLA DIPAK BALWANTRAI</au><au>VYAS NIRAJ RAMESHCHANDRA</au><au>JASRA RAKSH VIR</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for the preparation of finely divided precipitated silica</title><date>2012-08-28</date><risdate>2012</risdate><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° to 90° 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.</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_US8252261B2 |
| source | esp@cenet |
| subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS |
| title | Process for the preparation of finely divided precipitated silica |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-15T01%3A25%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=SOMANI%20RAJESH%20SHANTILAL&rft.date=2012-08-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS8252261B2%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |