Coating asbestos fibres to eliminate health hazard before recycling
Treatment of (materials contg.) asbestos fibres comprises coating with a liquid contg. esters and/or incompletely hydrolysable esters. Also claimed are the treated fibres per se. The esters contain (OR) gps. or organic gps. (R'), e.g. alkyl or aryl gps., which may have functional substituents....
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| creator | FORKEL, KLAUS., 96528 SCHALKAU, DE UNGER, BRITA., 12459 BERLIN, DE WIHSMANN, FRED GUSTAV, DR., 12487 BERLIN, DE |
| description | Treatment of (materials contg.) asbestos fibres comprises coating with a liquid contg. esters and/or incompletely hydrolysable esters. Also claimed are the treated fibres per se. The esters contain (OR) gps. or organic gps. (R'), e.g. alkyl or aryl gps., which may have functional substituents. The coating compsn. esp. is based on SiO2 sols and/or organic modified SiO2 sols prepd. from cpds. of the formula R'nSi(OR)4-n, in which, esp., n = 1 and R' = -CH3. The system esp. undergoes polycondensation or polymerisation to a firmly adhering, flexible coating with a dry thickness of >= 1 mu m, so that the fibres no longer damage the lungs. |
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Also claimed are the treated fibres per se. The esters contain (OR) gps. or organic gps. (R'), e.g. alkyl or aryl gps., which may have functional substituents. The coating compsn. esp. is based on SiO2 sols and/or organic modified SiO2 sols prepd. from cpds. of the formula R'nSi(OR)4-n, in which, esp., n = 1 and R' = -CH3. The system esp. undergoes polycondensation or polymerisation to a firmly adhering, flexible coating with a dry thickness of >= 1 mu m, so that the fibres no longer damage the lungs.</description><edition>6</edition><language>eng ; ger</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; DISPOSAL OF SOLID WASTE ; GLASS ; JOINING GLASS TO GLASS OR OTHER MATERIALS ; LIME, MAGNESIA ; METALLURGY ; MINERAL OR SLAG WOOL ; PERFORMING OPERATIONS ; RECLAMATION OF CONTAMINED SOIL SOIL ; REFRACTORIES ; SLAG ; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS ; SURFACE TREATMENT OF GLASS ; TRANSPORTING ; TREATMENT OF NATURAL STONE</subject><creationdate>1997</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=19970220&DB=EPODOC&CC=DE&NR=19531939A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970220&DB=EPODOC&CC=DE&NR=19531939A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FORKEL, KLAUS., 96528 SCHALKAU, DE</creatorcontrib><creatorcontrib>UNGER, BRITA., 12459 BERLIN, DE</creatorcontrib><creatorcontrib>WIHSMANN, FRED GUSTAV, DR., 12487 BERLIN, DE</creatorcontrib><title>Coating asbestos fibres to eliminate health hazard before recycling</title><description>Treatment of (materials contg.) asbestos fibres comprises coating with a liquid contg. esters and/or incompletely hydrolysable esters. 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Also claimed are the treated fibres per se. The esters contain (OR) gps. or organic gps. (R'), e.g. alkyl or aryl gps., which may have functional substituents. The coating compsn. esp. is based on SiO2 sols and/or organic modified SiO2 sols prepd. from cpds. of the formula R'nSi(OR)4-n, in which, esp., n = 1 and R' = -CH3. The system esp. undergoes polycondensation or polymerisation to a firmly adhering, flexible coating with a dry thickness of >= 1 mu m, so that the fibres no longer damage the lungs.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; ger |
| recordid | cdi_epo_espacenet_DE19531939A1 |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DISPOSAL OF SOLID WASTE GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LIME, MAGNESIA METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING TREATMENT OF NATURAL STONE |
| title | Coating asbestos fibres to eliminate health hazard before recycling |
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