SEA-ISLAND TYPE COMPOSITE CROSS-SECTION FIBER AND METHOD FOR MANUFACTURING THE SAME

Japanese Patent JP2014043659

A

To provide a sea-island type composite cross-section fiber capable of suppressing separation at a composite interface and substantially improving a fluff and thread breakage, etc., and an ultra fine polyamide fiber obtained by dissolving and removing a polyester included in the sea-island type composite fiber.

The sea-island type composite cross section fiber uses an alkali easily leachable polyester having a main repeating unit formed of ethylene terephthalate and comprising 2.0-5.5 mol% of an isophthalic acid component including a metal sulfonate group and 3.0-6.0 mol% of an adipic acid component to a total acid component as a sea component, and a polyamide as an island component. In the sea-island type composite cross section fiber, a unit reaction rate of terephthalic acid caused by an ester/amide exchange reaction is 0.0005-0.0025%/mm.

JPH073634	PRODUCTION OF SPLITTABLE COMPOSITE FIBER KNITTED OR WOVEN FABRIC
JP2875000	INDUSTRIAL APPLICABILITY: Porous and antistatic polyester fibers and methods for producing the same.
JP3452291	CORE-SHEATH TYPE CONJUGATE FIBER HAVING FRICTION MELTING RESISTANCE AND ITS WOVEN AND KNITTED FABRIC

KONO TAKEAKI
IDA TAKASHI
TAKANAGA HIDETOSHI
MIZOTA JUNICHI
SUZUKI NORIO
KOMATSU HIROKAZU

JP2012186732A

March 13, 2014

August 27, 2012

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TORAY INDUSTRIES

D01F8/14; D03D15/00

Seiryu International Patent Service Corporation
Takayoshi in the daytime
Shinichi Ogawa
Takashi Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita

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