公开(公告)号：US20240278184A1

公开(公告)日：2024-08-22

申请号：US18287786

申请日：2022-04-22

Applicant: TORAY INDUSTRIES, INC.

Inventor： Ryosuke OKANISHI ,  Shunsuke TABAYASHI ,  Yuta AMANO ,  Takao SASAKI ,  Masaki HIGASHI ,  Takashi YOSHINO ,  Hiroki MINEHARA ,  Hiroaki TANAKA

IPC: B01D69/10 ,  B01D69/02 ,  B01D71/56 ,  C02F1/44 ,  C02F103/08

CPC classification number: B01D69/107 ,  B01D69/02 ,  B01D71/56 ,  C02F1/44 ,  B01D2325/04 ,  B01D2325/06 ,  C02F2103/08

Abstract: The present invention relates to a composite semipermeable membrane including: a support membrane; and a separation functional layer provided on the support membrane, in which the separation functional layer includes a thin membrane, the thin membrane has a fold structure including a plurality of protrusions having a height of 10 nm or more, and in the fold structure, a ratio (T100/T25) is less than 0.95, where T25 is a thickness of the thin membrane in a region of 0% to 25% of the height of the protrusion and T100 is a thickness of the thin membrane in a region of 50% to 100% of the height of the protrusion.

公开(公告)号：US20190282962A1

公开(公告)日：2019-09-19

申请号：US16335107

申请日：2017-09-11

Applicant: TORAY INDUSTRIES, INC.

Inventor： Takeshi KONDA ,  Kentarou TAKAGI ,  Hiroho HIROZAWA ,  Hiroyuki YAMADA ,  Hiroki MINEHARA ,  Hiroaki TANAKA ,  Monami SUZUKI ,  Yutaro SUZUKI

IPC: B01D63/10 ,  B01D69/02 ,  C02F1/44 ,  B01D61/02

Abstract: According to the present invention, it is possible to obtain a separation membrane element which has an element configuration having high fresh water production performance and high removal performance, has an improved membrane surface linear velocity whereby fouling due to hardly-soluble salts (scales) or organic matters is less likely to occur on the membrane surface particularly in high recovery ratio operation, and is excellent in fresh water production performance and removal performance over a long period of time.

公开(公告)号：US20180318771A1

公开(公告)日：2018-11-08

申请号：US15748981

申请日：2016-07-29

Applicant: TORAY INDUSTRIES, INC.

Inventor： Masakazu KOIWA ,  Ryoma MIYAMOTO ,  Hiroaki TANAKA ,  Koji NAKATSUJI ,  Kentaro TAKAGI

IPC: B01D69/10 ,  B01D69/12 ,  B01D71/56 ,  B01D69/02 ,  B01D53/22 ,  B01D61/02 ,  B01D61/18

CPC classification number: B01D69/10 ,  B01D53/228 ,  B01D61/025 ,  B01D61/18 ,  B01D69/02 ,  B01D69/12 ,  B01D69/125 ,  B01D71/34 ,  B01D71/56 ,  B01D71/68 ,  B01D2325/36 ,  B32B5/18 ,  B32B27/12

Abstract: An object of the present invention is to provide a separation membrane having high permeability and selective removability of divalent/monovalent ions. The separation membrane of the present invention includes a supporting membrane and a separation functional layer formed on the supporting membrane, in which the separation functional layer contains a polymerized product of a polyfunctional amine with a polyfunctional acid halide, the polyfunctional amine contains a polyfunctional aliphatic amine as a main component, the separation functional layer has a hollow protuberant structure, and the separation functional layer has a relative surface area of 1.1-10.0.

公开(公告)号：US20170368510A1

公开(公告)日：2017-12-28

申请号：US15539347

申请日：2015-12-25

Applicant: TORAY INDUSTRIES, INC.

Inventor： Hiroaki TANAKA ,  Kazuki SATO ,  Takafumi OGAWA ,  Takao SASAKI

IPC: B01D71/56 ,  B01D69/12 ,  B01D69/10 ,  C08G69/46 ,  C08G69/26

CPC classification number: B01D71/56 ,  B01D61/02 ,  B01D61/14 ,  B01D67/0093 ,  B01D69/10 ,  B01D69/12 ,  B01D69/125 ,  B01D2325/30 ,  C08G69/26 ,  C08G69/46

Abstract: The present invention relates to a composite semipermeable membrane including a supporting membrane and a separation functional layer disposed on the supporting membrane, in which the separation functional layer comprises an aromatic polyamide, the aromatic polyamide has side chains and terminal groups, at least one of the side chains and terminal groups of the aromatic polyamide being an amino group, at least one of the side chains and terminal groups of the aromatic polyamide is a substituent having a structure represented by formula (1): —NXY or formula (2): —NXYZ, and in the aromatic polyamide, a content A of substituents having structures represented by formula (1) and formula (2) and a content B of amide groups satisfy 0.005≦A/B≦0.15.

公开(公告)号：US20180369758A1

公开(公告)日：2018-12-27

申请号：US16063172

申请日：2016-12-16

Applicant: TORAY INDUSTRIES, INC.

Inventor： Hiroaki TANAKA ,  Hiroki MINEHARA ,  Koji NAKATSUJI ,  Masahiro KIMURA

IPC: B01D69/12 ,  B01D69/10 ,  B01D69/02 ,  B01D71/56

Abstract: This composite semipermeable membrane is provided with: a porous supporting membrane that comprises a base and a porous supporting layer; and a separating function layer that is provided on the porous supporting layer. With respect to this composite semipermeable membrane, the standard deviation of pore radius of the separating function layer as determined by positron annihilation lifetime measurement is 0.025 nm or less.

公开(公告)号：US20190388844A1

公开(公告)日：2019-12-26

申请号：US16482108

申请日：2018-01-31

Applicant: TORAY INDUSTRIES, INC.

Inventor： Hiroki MINEHARA ,  Hiroaki TANAKA ,  Monami SUZUKI ,  Takafumi OGAWA

IPC: B01D69/02 ,  B01D69/10

Abstract: The present invention pertains to a semipermeable composite membrane having a support film and a separation function layer, wherein, (A) in a semipermeable composite membrane equilibrated under specific conditions, the half value width H of an absorption peak between 3900 cm−1 and 2900 cm−1 in a difference spectrum Sd obtained by subtracting IR spectrum S2 from IR spectrum S1 is 355-373, and (B) in the IR spectrum S1, the value F obtained by dividing the area of the absorption intensity between 3900 cm−1 and 2900 cm−1 by the absorbance at the peak top between 1690 cm−1 and 1630 cm−1 is at least 850.