| 摘要 |
PURPOSE:To obtain inexpensively the titled high-quality yarn having easy handleability, improved opening properties free from fusion among filament, by attaching a specific filament-collecting agent to pitch yarn while or before the pitch yarn obtained by subjecting raw material pitch to melt spinning is collected. CONSTITUTION:First, raw material pitch is subjected to melt spinning from a spinneret to a gaseous phase to form pitch yarn and, while or before the yarn is collected, a dispersion of a silicon oil (e.g., dimethylpolysiloxane, etc.) and solid fine particles (preferably carbon black, etc.) as a filament-collecting agent is attached to the yarn. Then, the pitch yarn after the collection is made infusible, carbonized, and optionally graphitized, to give the aimed yarn. A silicone oil that is not in a solution or emulsion with water is preferable as the silicone oil.
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