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Patent Searching and Data


Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2019/054119
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a composite semipermeable membrane, which has superior oxidant resistance (chlorine resistance) and salting prevention, and a method for manufacturing the same. This composite semipermeable membrane has a skin layer, which includes a polyamide resin obtained by polymerization of a multifunctional amine component and a multifunctional acid halide component and is formed on the surface of a porous support body. The multifunctional amine component includes an alicyclic diamine. The skin layer has an absorption peak intensity of at least 0.03 that is obtained by a Fourier transform infrared spectroscopy (FT-IR) transmission method and originates in the stretching vibration of C=O in the amide groups.

Inventors:
MIYABE TOMOTSUGU (JP)
INOUE SHINICHI (JP)
OKAZAKI YUHA (JP)
OGAWA TOMOYA (JP)
Application Number:
PCT/JP2018/030437
Publication Date:
March 21, 2019
Filing Date:
August 16, 2018
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D71/56; B01D69/10; B01D69/12
Domestic Patent References:
WO2015114727A12015-08-06
Foreign References:
JP2016093797A2016-05-26
JP2014233652A2014-12-15
JP2010137192A2010-06-24
US4769148A1988-09-06
JPS63123406A1988-05-27
JPS5824303A1983-02-14
JPH01180208A1989-07-18
JPH08224452A1996-09-03
Other References:
See also references of EP 3682964A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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