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Patent Searching and Data


Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING COMPOSITE SEMIPERMEABLE MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2018/003943
Kind Code:
A1
Abstract:
The present invention pertains to a composite semipermeable membrane comprising a support film including a substrate and a porous support layer, and a separation functional layer disposed on the porous support layer, said separation functional layer containing a crosslinked polyamide and a hydrophilic polymer that is a polymerized product of a monomer having an ethylenically-unsaturated group, and the ratio (the O/N ratio) of the atomic number of oxygen atoms to the atomic number of nitrogen atoms on the surface of the separation functional layer, measured by an X-ray photoelectron spectroscopy, is 1.5 or more and 10 or less, and the standard deviation of the ratio is 0.15 or more.

Inventors:
HAMADA Tsuyoshi (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
OKABE Jun (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
OGAWA Takafumi (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
NAKATSUJI Koji (Toray Industries Inc., 1515, Oaza-tsutsui, Masaki-cho, Iyo-gu, Ehime 93, 〒7913193, JP)
KIMURA Masahiro (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
Application Number:
JP2017/024017
Publication Date:
January 04, 2018
Filing Date:
June 29, 2017
Export Citation:
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Assignee:
TORAY INDUSTRIES, INC. (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 66, 〒1038666, JP)
International Classes:
B01D71/56; B01D69/02; B01D69/10; B01D69/12; B01D71/82
Domestic Patent References:
WO2016002819A12016-01-07
WO2014133130A12014-09-04
WO2014133133A12014-09-04
Foreign References:
JP2000176263A2000-06-27
JP2010012455A2010-01-21
JP2001286741A2001-10-16
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (Toranomon East Bldg. 10F, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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