CERAMIC COMPOSITION AND ITS PRODUCTION
PURPOSE:To enhance strength at high temp. without requiring a dewaxing stage by firing a molded body consisting of alumina powder and a specified polysilazane in an inert gaseous atmosphere or under pressure. CONSTITUTION:Alumina powder is mixed with polysilazane having a skeleton structure consisti...
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| creator | AYAMA KYOICHI NOAKI NORIO |
| description | PURPOSE:To enhance strength at high temp. without requiring a dewaxing stage by firing a molded body consisting of alumina powder and a specified polysilazane in an inert gaseous atmosphere or under pressure. CONSTITUTION:Alumina powder is mixed with polysilazane having a skeleton structure consisting of repeating units represented by formula I and also having plural residues of precursors having units represented by formula II partially in the form of structural units represented by formulae III, IV and the mixture is molded and fired at 800-1,950 deg.C in an inert gaseous atmosphere of Ar-N and/or NH3 or under pressure. In the formulae II-IV, each of R1-R4 is 1-6C lower alkyl such as methyl, ethyl, n-propyl or isopropyl, (un)substd. vinyl, (un) substd. allyl or 6-10C (un)substd. lower aryl such as phenyl, tolyl or xylyl and each of R1-R3 may be H. |
| format | Patent |
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CONSTITUTION:Alumina powder is mixed with polysilazane having a skeleton structure consisting of repeating units represented by formula I and also having plural residues of precursors having units represented by formula II partially in the form of structural units represented by formulae III, IV and the mixture is molded and fired at 800-1,950 deg.C in an inert gaseous atmosphere of Ar-N and/or NH3 or under pressure. In the formulae II-IV, each of R1-R4 is 1-6C lower alkyl such as methyl, ethyl, n-propyl or isopropyl, (un)substd. vinyl, (un) substd. allyl or 6-10C (un)substd. lower aryl such as phenyl, tolyl or xylyl and each of R1-R3 may be H.</description><language>eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; LIME, MAGNESIA ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; REFRACTORIES ; SLAG ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TREATMENT OF NATURAL STONE ; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</subject><creationdate>1992</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=19920207&DB=EPODOC&CC=JP&NR=H0437644A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920207&DB=EPODOC&CC=JP&NR=H0437644A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AYAMA KYOICHI</creatorcontrib><creatorcontrib>NOAKI NORIO</creatorcontrib><title>CERAMIC COMPOSITION AND ITS PRODUCTION</title><description>PURPOSE:To enhance strength at high temp. without requiring a dewaxing stage by firing a molded body consisting of alumina powder and a specified polysilazane in an inert gaseous atmosphere or under pressure. CONSTITUTION:Alumina powder is mixed with polysilazane having a skeleton structure consisting of repeating units represented by formula I and also having plural residues of precursors having units represented by formula II partially in the form of structural units represented by formulae III, IV and the mixture is molded and fired at 800-1,950 deg.C in an inert gaseous atmosphere of Ar-N and/or NH3 or under pressure. In the formulae II-IV, each of R1-R4 is 1-6C lower alkyl such as methyl, ethyl, n-propyl or isopropyl, (un)substd. vinyl, (un) substd. allyl or 6-10C (un)substd. lower aryl such as phenyl, tolyl or xylyl and each of R1-R3 may be H.</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>CONCRETE</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>TREATMENT OF NATURAL STONE</subject><subject>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFBzdg1y9PV0VnD29w3wD_YM8fT3U3D0c1HwDAlWCAjydwl1BgnxMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAPAxNjczMTE0djIpQAAIvmI3c</recordid><startdate>19920207</startdate><enddate>19920207</enddate><creator>AYAMA KYOICHI</creator><creator>NOAKI NORIO</creator><scope>EVB</scope></search><sort><creationdate>19920207</creationdate><title>CERAMIC COMPOSITION AND ITS PRODUCTION</title><author>AYAMA KYOICHI ; NOAKI NORIO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH0437644A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1992</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>CONCRETE</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>TREATMENT OF NATURAL STONE</topic><topic>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>AYAMA KYOICHI</creatorcontrib><creatorcontrib>NOAKI NORIO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>AYAMA KYOICHI</au><au>NOAKI NORIO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CERAMIC COMPOSITION AND ITS PRODUCTION</title><date>1992-02-07</date><risdate>1992</risdate><abstract>PURPOSE:To enhance strength at high temp. without requiring a dewaxing stage by firing a molded body consisting of alumina powder and a specified polysilazane in an inert gaseous atmosphere or under pressure. CONSTITUTION:Alumina powder is mixed with polysilazane having a skeleton structure consisting of repeating units represented by formula I and also having plural residues of precursors having units represented by formula II partially in the form of structural units represented by formulae III, IV and the mixture is molded and fired at 800-1,950 deg.C in an inert gaseous atmosphere of Ar-N and/or NH3 or under pressure. In the formulae II-IV, each of R1-R4 is 1-6C lower alkyl such as methyl, ethyl, n-propyl or isopropyl, (un)substd. vinyl, (un) substd. allyl or 6-10C (un)substd. lower aryl such as phenyl, tolyl or xylyl and each of R1-R3 may be H.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS |
| title | CERAMIC COMPOSITION AND ITS PRODUCTION |
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