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：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.