Method for producing a precursor pitch for carbon fiber

A precursor pitch suitable for production of carbon fiber which is excellent in thermal stability, spinnability, infusibility and is few in impurities, is produced by heating a coal tar pitch at a temperature of 350 DEG -500 DEG C. to form mesophase and extracting the thus heated pitch with a tar se...

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Bibliographische Detailangaben
Hauptverfasser:	YUDATE, KOZO, NAGASAWA, KEN
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A precursor pitch suitable for production of carbon fiber which is excellent in thermal stability, spinnability, infusibility and is few in impurities, is produced by heating a coal tar pitch at a temperature of 350 DEG -500 DEG C. to form mesophase and extracting the thus heated pitch with a tar series light oil to obtain the precursor pitch.