Process for preparing organically modified aerogels in which the salts formed are precipitated out

Process for preparing organically modified aerogels in which the salts formed are precipitated out

The present invention relates to a process for the preparation of organically modified aerogels, comprisinga) the preparation of a silicic acid sol having a pH of

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: SCHWERTFEGER FRITZ
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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 SCHWERTFEGER FRITZ
description The present invention relates to a process for the preparation of organically modified aerogels, comprisinga) the preparation of a silicic acid sol having a pH of
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US6210751B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US6210751B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US6210751B13</originalsourceid><addsrcrecordid>eNqNjEEKAjEMRbtxIeodcgHBKupeUVwK6nqInUwb6DQlrYi31xEP4OrB5_03NveziqNSoBOFrJRROXkQ9ZjYYYwv6KXljqkFJBVPsQAneAZ2AWogKBjr994PitJQcZy5Yv0M8qhTM-owFpr9ODFwPFz3pzllaahkdJSoNrfLZmkX27Xd2dUfyhsM4T4Y</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Process for preparing organically modified aerogels in which the salts formed are precipitated out</title><source>esp@cenet</source><creator>SCHWERTFEGER FRITZ</creator><creatorcontrib>SCHWERTFEGER FRITZ</creatorcontrib><description>The present invention relates to a process for the preparation of organically modified aerogels, comprisinga) the preparation of a silicic acid sol having a pH of &lt;=4.0 from an aqueous water glass solution, with the aid of at least one organic and/or inorganic acid;b) polycondensation of the resulting silicic acid sol to a SiO2 gel by the addition of a base;c) washing the gel obtained in Step b) with an organic solvent until the water content of the gel is &lt;=5% by weight;d) surface-silylating the gel obtained in Step c), ande) drying the surface-silylated gel obtained in Step d), characterized in that at least one acid forms difficultly soluble salts with the cations of the water glass in the silicic acid sol, and that before Step b) the resulting difficultly soluble salts are extensively precipitated and separated from the silicic acid sol.</description><edition>7</edition><language>eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; COMPOUNDS THEREOF ; CONCRETE ; INORGANIC CHEMISTRY ; LIME, MAGNESIA ; METALLURGY ; NON-METALLIC ELEMENTS ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</subject><creationdate>2001</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&amp;date=20010403&amp;DB=EPODOC&amp;CC=US&amp;NR=6210751B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20010403&amp;DB=EPODOC&amp;CC=US&amp;NR=6210751B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHWERTFEGER FRITZ</creatorcontrib><title>Process for preparing organically modified aerogels in which the salts formed are precipitated out</title><description>The present invention relates to a process for the preparation of organically modified aerogels, comprisinga) the preparation of a silicic acid sol having a pH of &lt;=4.0 from an aqueous water glass solution, with the aid of at least one organic and/or inorganic acid;b) polycondensation of the resulting silicic acid sol to a SiO2 gel by the addition of a base;c) washing the gel obtained in Step b) with an organic solvent until the water content of the gel is &lt;=5% by weight;d) surface-silylating the gel obtained in Step c), ande) drying the surface-silylated gel obtained in Step d), characterized in that at least one acid forms difficultly soluble salts with the cations of the water glass in the silicic acid sol, and that before Step b) the resulting difficultly soluble salts are extensively precipitated and separated from the silicic acid sol.</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>COMPOUNDS THEREOF</subject><subject>CONCRETE</subject><subject>INORGANIC CHEMISTRY</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2001</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjEEKAjEMRbtxIeodcgHBKupeUVwK6nqInUwb6DQlrYi31xEP4OrB5_03NveziqNSoBOFrJRROXkQ9ZjYYYwv6KXljqkFJBVPsQAneAZ2AWogKBjr994PitJQcZy5Yv0M8qhTM-owFpr9ODFwPFz3pzllaahkdJSoNrfLZmkX27Xd2dUfyhsM4T4Y</recordid><startdate>20010403</startdate><enddate>20010403</enddate><creator>SCHWERTFEGER FRITZ</creator><scope>EVB</scope></search><sort><creationdate>20010403</creationdate><title>Process for preparing organically modified aerogels in which the salts formed are precipitated out</title><author>SCHWERTFEGER FRITZ</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US6210751B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2001</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>COMPOUNDS THEREOF</topic><topic>CONCRETE</topic><topic>INORGANIC CHEMISTRY</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>SCHWERTFEGER FRITZ</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SCHWERTFEGER FRITZ</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for preparing organically modified aerogels in which the salts formed are precipitated out</title><date>2001-04-03</date><risdate>2001</risdate><abstract>The present invention relates to a process for the preparation of organically modified aerogels, comprisinga) the preparation of a silicic acid sol having a pH of &lt;=4.0 from an aqueous water glass solution, with the aid of at least one organic and/or inorganic acid;b) polycondensation of the resulting silicic acid sol to a SiO2 gel by the addition of a base;c) washing the gel obtained in Step b) with an organic solvent until the water content of the gel is &lt;=5% by weight;d) surface-silylating the gel obtained in Step c), ande) drying the surface-silylated gel obtained in Step d), characterized in that at least one acid forms difficultly soluble salts with the cations of the water glass in the silicic acid sol, and that before Step b) the resulting difficultly soluble salts are extensively precipitated and separated from the silicic acid sol.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_US6210751B1
source esp@cenet
subjects ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
title Process for preparing organically modified aerogels in which the salts formed are precipitated out
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-04T15%3A56%3A48IST&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=SCHWERTFEGER%20FRITZ&rft.date=2001-04-03&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS6210751B1%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