PRODUCTION OF ACRYLONITRILE-BASED PRECURSOR FOR MANUFACTURING CARBON YARN

PURPOSE:To obtain the title precursor having excellent reeling properties and productivity, by attaching a finishing oil to acrylonitrile-based yarn tow comprising drawn filaments, winding and heat-treating at a specific temperature for a specific time. CONSTITUTION:For example, an acrylonitrile-bas...

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Bibliographische Detailangaben
Hauptverfasser:	SHIRAKATA MORIAKI, TOKUOKA YOSHIKAZU, ICHIKAWA SEISHIRO
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 FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE MECHANICAL FINISHING OF YARNS OR ROPES NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES WARPING OR BEAMING YARNS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the title precursor having excellent reeling properties and productivity, by attaching a finishing oil to acrylonitrile-based yarn tow comprising drawn filaments, winding and heat-treating at a specific temperature for a specific time. CONSTITUTION:For example, an acrylonitrile-based polymer comprising >=85wt.% acrylonitrile is spun and drawn to give acrylonitrile-based yarn tow having >=1,000 filaments, which is provided with preferably >=0.05wt.% finishing oil (e.g. polybutene), wound and heat-treated in an atmosphere at 60-120 deg.C, preferably 70-100 deg.C for at least 6 hours, preferably 7-24 hours to give the objective precursor.