Title:
鞘芯複合型ポリオレフィン系繊維およびグラフト化ポリオレフィン系不織布
Document Type and Number:
Japanese Patent JP4095190
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject fibers good in spinning properties, capable of readily carrying out conversion into a nonwoven fabric and grafting and useful for the production, etc., of a separator for cells or batteries having high liquid sucking properties and the holding ability of an electrolyte by composing the fibers of a core material and a specific sheath material covering the core material. SOLUTION: The sheath-core conjugate type polyolefin-based fibers comprise a sheath material containing (A) a propylene-based polymer such as a propylene-butene-1 random copolymer and (B) a linear low-density polyethylene having 0.85-0.92 g/cm3 density and <3.0 ratio Mw/Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn measured by a gel permeation chromatography such as a copolymer of ethylene and an α-olefin, e.g. butene-1 in the sheath-core conjugate type polyolefin-based fibers comprising a core material such as a polypropylene- based resin and the sheath material covering the core material. Further, the graft polymerization of a hydrophilic vinyl monomer such as acrylic acid onto the fibers of a nonwoven fabric comprising the sheath-core conjugate type polyolefin-based fibers is preferably carried out to prepare the grafted polyolefin-based nonwoven fabric.
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Inventors:
Shinji Ota
Yuki Meguro
Yuki Meguro
Application Number:
JP35911398A
Publication Date:
June 04, 2008
Filing Date:
December 17, 1998
Export Citation:
Assignee:
Ube Nitto Kasei Co., Ltd.
International Classes:
D01F8/06; H01M2/16; D01F8/00; D04H1/541; D06M13/203; D06M14/12; D21H13/14; D06M101/00; D06M101/16; D06M101/18
Domestic Patent References:
| JP7070898A | ||||
| JP8325932A | ||||
| JP5059614A | ||||
| JP9158020A |
Attorney, Agent or Firm:
Shizuo Nakamura