PRODUCTION OF PRECURSOR PITCH FOR CARBON FIBER
PURPOSE:To obtain the titled pitch of low viscosity with good thermal stability and spinnability without hydrogenation-treatment, etc., by removing the high- molecular weight component in tar pitch by solvent extraction followed by heat-treatment of the resultant pitch. CONSTITUTION:First, tar pitch...
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| creator | KAMISHITA MAMORU YUMITATE KOZO OOSUGI YUKIHIRO |
| description | PURPOSE:To obtain the titled pitch of low viscosity with good thermal stability and spinnability without hydrogenation-treatment, etc., by removing the high- molecular weight component in tar pitch by solvent extraction followed by heat-treatment of the resultant pitch. CONSTITUTION:First, tar pitch is subjected to extraction-treatment with an aromatic solvent (e.g., tar-based middle oil) followed by separation-treatment such as filtration to eliminate solvent-insolubles. Next, the resulting pitch is treated by heating (pref. being heated to 470-530 deg.C under an inert gas atmo sphere and a reduced pressure =15 deg.C/min. followed by heating at this highest temperature for |
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CONSTITUTION:First, tar pitch is subjected to extraction-treatment with an aromatic solvent (e.g., tar-based middle oil) followed by separation-treatment such as filtration to eliminate solvent-insolubles. Next, the resulting pitch is treated by heating (pref. being heated to 470-530 deg.C under an inert gas atmo sphere and a reduced pressure <=20mmHg at a rate >=15 deg.C/min. followed by heating at this highest temperature for <=10min), thus obtaining the objective pitch. The elimination of solvent-insolubles mentioned above is pref. carried out in such a manner that the pyridine-insolubles and quinoline-insolubles in the pitch represent <=2wt% and trace amount, respectively.</description><language>eng</language><subject>APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS ; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS ; CHEMISTRY ; FUELS ; LUBRICANTS ; METALLURGY ; NATURAL OR ARTIFICIAL THREADS OR FIBRES ; PEAT ; PETROLEUM, GAS OR COKE INDUSTRIES ; PYROLIGNEOUS ACID ; SPINNING ; TECHNICAL GASES CONTAINING CARBON MONOXIDE ; TEXTILES ; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR</subject><creationdate>1986</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=19860723&DB=EPODOC&CC=JP&NR=S61162586A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860723&DB=EPODOC&CC=JP&NR=S61162586A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAMISHITA MAMORU</creatorcontrib><creatorcontrib>YUMITATE KOZO</creatorcontrib><creatorcontrib>OOSUGI YUKIHIRO</creatorcontrib><title>PRODUCTION OF PRECURSOR PITCH FOR CARBON FIBER</title><description>PURPOSE:To obtain the titled pitch of low viscosity with good thermal stability and spinnability without hydrogenation-treatment, etc., by removing the high- molecular weight component in tar pitch by solvent extraction followed by heat-treatment of the resultant pitch. CONSTITUTION:First, tar pitch is subjected to extraction-treatment with an aromatic solvent (e.g., tar-based middle oil) followed by separation-treatment such as filtration to eliminate solvent-insolubles. Next, the resulting pitch is treated by heating (pref. being heated to 470-530 deg.C under an inert gas atmo sphere and a reduced pressure <=20mmHg at a rate >=15 deg.C/min. followed by heating at this highest temperature for <=10min), thus obtaining the objective pitch. The elimination of solvent-insolubles mentioned above is pref. carried out in such a manner that the pyridine-insolubles and quinoline-insolubles in the pitch represent <=2wt% and trace amount, respectively.</description><subject>APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS</subject><subject>CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS</subject><subject>CHEMISTRY</subject><subject>FUELS</subject><subject>LUBRICANTS</subject><subject>METALLURGY</subject><subject>NATURAL OR ARTIFICIAL THREADS OR FIBRES</subject><subject>PEAT</subject><subject>PETROLEUM, GAS OR COKE INDUSTRIES</subject><subject>PYROLIGNEOUS ACID</subject><subject>SPINNING</subject><subject>TECHNICAL GASES CONTAINING CARBON MONOXIDE</subject><subject>TEXTILES</subject><subject>WORKING-UP PITCH, ASPHALT, BITUMEN, TAR</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNALCPJ3CXUO8fT3U_B3UwgIcnUODQr2D1II8Axx9lBwA7KcHYOcgLJunk6uQTwMrGmJOcWpvFCam0HRzRWoUDe1ID8-tbggMTk1L7Uk3isg2MzQ0MzI1MLM0ZgYNQDvyCYQ</recordid><startdate>19860723</startdate><enddate>19860723</enddate><creator>KAMISHITA MAMORU</creator><creator>YUMITATE KOZO</creator><creator>OOSUGI YUKIHIRO</creator><scope>EVB</scope></search><sort><creationdate>19860723</creationdate><title>PRODUCTION OF PRECURSOR PITCH FOR CARBON FIBER</title><author>KAMISHITA MAMORU ; YUMITATE KOZO ; OOSUGI YUKIHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS61162586A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1986</creationdate><topic>APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS</topic><topic>CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS</topic><topic>CHEMISTRY</topic><topic>FUELS</topic><topic>LUBRICANTS</topic><topic>METALLURGY</topic><topic>NATURAL OR ARTIFICIAL THREADS OR FIBRES</topic><topic>PEAT</topic><topic>PETROLEUM, GAS OR COKE INDUSTRIES</topic><topic>PYROLIGNEOUS ACID</topic><topic>SPINNING</topic><topic>TECHNICAL GASES CONTAINING CARBON MONOXIDE</topic><topic>TEXTILES</topic><topic>WORKING-UP PITCH, ASPHALT, BITUMEN, TAR</topic><toplevel>online_resources</toplevel><creatorcontrib>KAMISHITA MAMORU</creatorcontrib><creatorcontrib>YUMITATE KOZO</creatorcontrib><creatorcontrib>OOSUGI YUKIHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KAMISHITA MAMORU</au><au>YUMITATE KOZO</au><au>OOSUGI YUKIHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PRODUCTION OF PRECURSOR PITCH FOR CARBON FIBER</title><date>1986-07-23</date><risdate>1986</risdate><abstract>PURPOSE:To obtain the titled pitch of low viscosity with good thermal stability and spinnability without hydrogenation-treatment, etc., by removing the high- molecular weight component in tar pitch by solvent extraction followed by heat-treatment of the resultant pitch. CONSTITUTION:First, tar pitch is subjected to extraction-treatment with an aromatic solvent (e.g., tar-based middle oil) followed by separation-treatment such as filtration to eliminate solvent-insolubles. Next, the resulting pitch is treated by heating (pref. being heated to 470-530 deg.C under an inert gas atmo sphere and a reduced pressure <=20mmHg at a rate >=15 deg.C/min. followed by heating at this highest temperature for <=10min), thus obtaining the objective pitch. The elimination of solvent-insolubles mentioned above is pref. carried out in such a manner that the pyridine-insolubles and quinoline-insolubles in the pitch represent <=2wt% and trace amount, respectively.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY FUELS LUBRICANTS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PYROLIGNEOUS ACID SPINNING TECHNICAL GASES CONTAINING CARBON MONOXIDE TEXTILES WORKING-UP PITCH, ASPHALT, BITUMEN, TAR |
| title | PRODUCTION OF PRECURSOR PITCH FOR CARBON FIBER |
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