Title:
POROUS SUPPORT BODY, COMPOSITE SEMIPERMEABLE MEMBRANE, AND SPIRAL SEPARATION MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2016/098552
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a porous support body that is unlikely to curl (the incidence of MD curling is low). This porous support body has a polymer porous layer on one surface of a nonwoven cloth layer, the nonwoven cloth layer having an MD bend stiffness of 1.2-2.1 g∙cm2/cm, and an MD bend recovery of 0.3-0.6 g∙cm/cm. The nonwoven cloth layer is impregnated with a polymer that is the material for forming the polymer porous layer, the impregnation ratio of the polymer impregnated in the nonwoven cloth layer being 25-34% by weight of the total weight of the polymer in the polymer porous layer and the polymer impregnated in the nonwoven cloth layer.
Inventors:
NISHI MIEKO (JP)
KOMOTO ATSUHITO (JP)
KOMOTO ATSUHITO (JP)
Application Number:
PCT/JP2015/083169
Publication Date:
June 23, 2016
Filing Date:
November 26, 2015
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B5/28; B01D63/10; B01D69/10; B01D69/12; B01D71/68; B32B27/12
Domestic Patent References:
| WO2010126113A1 | 2010-11-04 |
Foreign References:
| JP2013180294A | 2013-09-12 | |||
| JP2012106177A | 2012-06-07 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
Patent business corporation ユニアス international patent firm (JP)
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