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Title:
CONJUGATED FIBER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3697882
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To solve problems in conventional polyester fibers containing particles at a high concentration and produce a high-strength conjugated fiber having high color developing properties.
SOLUTION: This conjugated fiber is a core-sheath type conjugated fiber containing a core and a sheath components which are polyester-based polymers. The content of particles in the fiber is ≥15 wt.% and the core component polyester is obtained by copolymerizing isophthalic acid with an ethylene oxide adduct to bisphenol A as copolymerization components in a molar fraction of 10.0≤Fa+Fb≤20.0 and 1.0≤Fb≤5.0 (Fa is the molar fraction of the isophthalic acid based on the total acid component of the copolyester; Fb is the molar fraction of the ethylene oxide adduct to the bisphenol A based on the total glycol component in the copolyester). The intrinsic viscosity of the core component is lower than that of the sheath component by ≥0.35.


Inventors:
Akio Tahara
Yuhei Maeda
Honda main tax
Application Number:
JP540698A
Publication Date:
September 21, 2005
Filing Date:
January 14, 1998
Export Citation:
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Assignee:
TORAY INDUSTRIES,INC.
International Classes:
D01F1/10; D01F8/14; (IPC1-7): D01F8/14
Domestic Patent References:
JP9228151A
JP9228172A