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.

公开(公告)号：US20240198293A1

公开(公告)日：2024-06-20

申请号：US18287795

申请日：2022-04-22

Applicant: TORAY INDUSTRIES, INC.

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

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

CPC classification number: B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D2325/04

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 comprises a plurality of protrusions formed of a thin membrane, and at least a part of the plurality of protrusions has a ratio (Wa/Wb) of larger than 1.3 in cross sections at arbitrary ten positions each having a length of 2.0 μm in a membrane surface direction of the support membrane, provided that Wa is a maximum width of the protrusion and Wb is a root width of the protrusion.

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：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：US20240198294A1

公开(公告)日：2024-06-20

申请号：US18287800

申请日：2022-04-22

Applicant: TORAY INDUSTRIES, INC.

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

IPC: B01D69/12 ,  B01D69/02

CPC classification number: B01D69/12 ,  B01D69/02 ,  B01D2325/06

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, an actual length L of the thin membrane per 1 μm length of the support membrane in a cross-sectional direction perpendicular to a membrane surface is 3.0 μm or more, and a thickness of the thin membrane in the protrusion is 15 nm or more.

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.