PREPARATION OF QUARTZ GLASS POWDER
PURPOSE:To obtain quartz glass powder useful as a main raw material for high- purity fiber, by blending ethyl silicate or propyl silicate with proper amounts of water and an acid with stirring, separating the formed powdery gel, calcining it. CONSTITUTION:Ethyl silicate or propyl silicate is blended...
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| creator | YAMAKAWA KOUICHI IKEDA HIROSHI KURODA YASUO |
| description | PURPOSE:To obtain quartz glass powder useful as a main raw material for high- purity fiber, by blending ethyl silicate or propyl silicate with proper amounts of water and an acid with stirring, separating the formed powdery gel, calcining it. CONSTITUTION:Ethyl silicate or propyl silicate is blended with >=4- |
| format | Patent |
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CONSTITUTION:Ethyl silicate or propyl silicate is blended with >=4-<=6mol water per 1mol of said silicates, and <=50 milimole acid such as hydrochloric acid, etc. based on 1l water and stirred. The precipitate of powdery or granular gel formed by the stirring is separated from the mother liquor, washed, dried and calcined. By this method, high-purity quartz glass powder useful as a main raw material for optical fiber of multicomponent system is obtained without requiring crushing process and producing dust during handling.</description><language>eng</language><subject>CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS ; CHEMISTRY ; COMPOUNDS THEREOF ; GLASS ; INORGANIC CHEMISTRY ; JOINING GLASS TO GLASS OR OTHER MATERIALS ; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES ; METALLURGY ; MINERAL OR SLAG WOOL ; NON-METALLIC ELEMENTS ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PHYSICS ; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS ; SURFACE TREATMENT OF GLASS</subject><creationdate>1983</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=19831015&DB=EPODOC&CC=JP&NR=S58176135A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19831015&DB=EPODOC&CC=JP&NR=S58176135A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAMAKAWA KOUICHI</creatorcontrib><creatorcontrib>IKEDA HIROSHI</creatorcontrib><creatorcontrib>KURODA YASUO</creatorcontrib><title>PREPARATION OF QUARTZ GLASS POWDER</title><description>PURPOSE:To obtain quartz glass powder useful as a main raw material for high- purity fiber, by blending ethyl silicate or propyl silicate with proper amounts of water and an acid with stirring, separating the formed powdery gel, calcining it. CONSTITUTION:Ethyl silicate or propyl silicate is blended with >=4-<=6mol water per 1mol of said silicates, and <=50 milimole acid such as hydrochloric acid, etc. based on 1l water and stirred. The precipitate of powdery or granular gel formed by the stirring is separated from the mother liquor, washed, dried and calcined. 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CONSTITUTION:Ethyl silicate or propyl silicate is blended with >=4-<=6mol water per 1mol of said silicates, and <=50 milimole acid such as hydrochloric acid, etc. based on 1l water and stirred. The precipitate of powdery or granular gel formed by the stirring is separated from the mother liquor, washed, dried and calcined. By this method, high-purity quartz glass powder useful as a main raw material for optical fiber of multicomponent system is obtained without requiring crushing process and producing dust during handling.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOUNDS THEREOF GLASS INORGANIC CHEMISTRY JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL NON-METALLIC ELEMENTS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS |
| title | PREPARATION OF QUARTZ GLASS POWDER |
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