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Title:
POLYESTER FIBER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3126709
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a polyester fiber capable of efficiently forming fibrillar superfine fiber having a sufficient length and capable of providing polyester fabric having excellent hand and feel.
SOLUTION: This polyester fiber is a modified multilobed polyester fiber mentioned below and comes into use after forming fibrillar superfine fiber by subjecting the fiber to alkaline weight-reducing treatment: (a) having at least one kind of aromatic dicarboxylic acid components or their ester-forming derivatives and at least one kind of diols components; (b) including ≥1 wt.% organic metal sulfonate of the formula: R-SO3M (wherein, R is a 3-30C alkyl, or a 7-40C aryl or alkylaryl; M is an alkali metal) and (c) having multilobed fiber cross section having 3-20 projection. Thus, the modified polyester fiber is adjusted so as to form fibrillar superfine fibers having 0.1-10 μm diameter and ≥10 μm length by being subjected to alkaline weight-reducing treatment.


Inventors:
Ishikawa, Takeshi
Akita, Takashi
Sakakura, Hideo
Application Number:
JP1999000322748
Publication Date:
January 22, 2001
Filing Date:
June 10, 1998
Export Citation:
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Assignee:
MITSUBISHI RAYON CO LTD
International Classes:
D04B1/04; D01D5/253; D01F6/62; D01F6/92; D03D15/00; D03D25/00; D06M11/00; D06M11/38; D06M101/00; D06M101/16; D06M101/30; D06M101/32; (IPC1-7): D06M11/38; D01D5/253; D01F6/62; D01F6/92; D03D15/00; D04B1/04
Attorney, Agent or Firm:
金田 暢之 (外2名)