HIGHLY HYGROSCOPIC SEA-ISLAND TYPE COMPOSITE FIBER, FIBER STRUCTURE, AND POLYESTER COMPOSITION

A highly hygroscopic sea-island type composite fiber has characteristics (1)-(4) below: (1) the island component in a polymer has hygroscopicity; (2) the ratio of the outermost layer thickness T to the fiber diameter R in a cross section of the fiber is 0.05-0.25; (3) the difference (ΔMR) in moistur...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAGAWA, Junichi, TANAKA, Yoichiro, MAKINO, Masataka, MOCHIZUKI, Katsuhiko
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 COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A highly hygroscopic sea-island type composite fiber has characteristics (1)-(4) below: (1) the island component in a polymer has hygroscopicity; (2) the ratio of the outermost layer thickness T to the fiber diameter R in a cross section of the fiber is 0.05-0.25; (3) the difference (ΔMR) in moisture absorption rate after hot water treatment is 2.0-10.0%; and (4) the content of a phenol group is 16-160 mmol/kg, wherein the outermost layer thickness is the difference between the radius of the fiber and the radius of a circumscribed circle connecting the vertices of the island component disposed at the outermost circumference, and represents the thickness of the sea component present in the outermost layer.