Title:
SEMIPERMEABLE MEMBRANE SUPPORT
Document Type and Number:
Japanese Patent JP2019063727
Kind Code:
A
Abstract:
To provide a semipermeable membrane support having sufficient resistance to high temperature and high concentration alkaline liquid, high strength, manufacturing stability and no strike-through to a non-coating surface because of good infiltration of a semipermeable membrane solution and being excellent in semipermeable membrane coating property and adhesiveness between a semipermeable membrane and the semipermeable membrane support.SOLUTION: In a semipermeable membrane support used by providing a semipermeable membrane on at least one surface of the semipermeable membrane support, the semipermeable membrane support: includes a core-sheath type composite fiber whose core component is polypropylene and sheath component is high-density polyethylene of 30 mass% or more and 90 mass% or less; includes a single fiber made of high crystalline polypropylene of 10 mass% or more and 70 mass% or less; is made of only polyolefin fibers; and has a permeability of 1.0-20.0 cm/cmsec.SELECTED DRAWING: None
Inventors:
ESUMI SHINICHI
Application Number:
JP2017190966A
Publication Date:
April 25, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
B01D69/10; B01D71/26; D01F8/06; D21H13/14; D21H15/10
Domestic Patent References:
| JP2012106177A | 2012-06-07 | |||
| JP2008302359A | 2008-12-18 | |||
| JP2003535683A | 2003-12-02 | |||
| JPS63191809A | 1988-08-09 |
Other References:
波木 一郎: "高結晶性ポリプロピレン", 高分子, vol. 41巻６月号, JPN6020047232, 1992, pages 407, ISSN: 0004405664