POLYVINYL ALCOHOL-BASED FIBER SUBJECT TO READY FIBRILLATION

PURPOSE: To obtain a fiber from a blend of a PVA-based polymer, PAN-based polymer and a specific graft copolymer, capable of easily forming fibrils by beating operation in an aqueous dispersion system thereof, thus useful as e.g. a substitutive material for asbestos or wood pulp. CONSTITUTION: This...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEDA HIROSHI, UBUKAWA HIROSHI, OMORI AKIO
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 NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain a fiber from a blend of a PVA-based polymer, PAN-based polymer and a specific graft copolymer, capable of easily forming fibrils by beating operation in an aqueous dispersion system thereof, thus useful as e.g. a substitutive material for asbestos or wood pulp. CONSTITUTION: This fiber is obtained from a blend of (A) a polyvinyl alcohol (PVA) >=1200 in degree polymerization and >=90mol% in degree of saponification, (B) a polyacrylonitrile-based polymer and (C) a graft copolymer prepared by grafting acrylonitrile to PVA. The blend contains 5-50wt.% (C) and 50-90wt.% total of the component A and the PVA component in the component C. For this fiber, the swellability of the phase involved in the component B is good, no component elutes into the water, and there is no trouble during its aftertreatment.