公开(公告)号：US20240189778A1

公开(公告)日：2024-06-13

申请号：US18286779

申请日：2022-04-27

Applicant: Toray Industries, Inc.

Inventor： Marina Taguchi ,  Masayuki Hanakawa ,  Gohei Yamamura ,  Koichi Takada ,  Hiroki Eimura ,  Shigeru Aoyama ,  Miku Akutsu

IPC: B01D69/02 ,  B01D53/22 ,  B01D67/00 ,  B01D69/08 ,  B01D71/26

CPC classification number: B01D69/02 ,  B01D53/228 ,  B01D67/002 ,  B01D67/0027 ,  B01D69/0871 ,  B01D71/26 ,  B01D2323/081 ,  B01D2323/12 ,  B01D2325/0231 ,  B01D2325/02832 ,  B01D2325/04 ,  B01D2325/20 ,  B01D2325/24 ,  B01D2325/30 ,  B01D2325/52

Abstract: A separation membrane has high strength and low leakage property while maintaining high gas permeability using poly(4-methyl-1-pentene) excellent in chemical resistance and gas permeability. The separation membrane contains poly(4-methyl-1-pentene) as a main component, in which a ratio RA of a rigid amorphous of poly(4-methyl-1-pentene) in the separation membrane is 43% or more and 60% or less, a porosity is 30% or more and 70% or less, and a dense layer is provided on at least one surface.

公开(公告)号：US11369925B2

公开(公告)日：2022-06-28

申请号：US16489276

申请日：2018-02-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Koichi Takada ,  Gohei Yamamura ,  Hiroki Eimura

IPC: B01D69/08 ,  B01D69/12 ,  B01D71/16 ,  B01D71/56

Abstract: The present invention addresses the problem of providing: a composite hollow-fiber membrane having high permeability and high membrane strength; and a production method therefor. The present invention pertains to a composite hollow-fiber membrane that at least has a layer (A) and a layer (B), wherein the layer (A) contains a thermoplastic resin, the layer (A) is provided with a co-continuous structure comprising voids and a phase containing the thermoplastic resin, the co-continuous structure has a structural cycle of 1-1000 nm, and the hole area rate HA of the layer (A) and the hole area rate HB of the layer (B) fulfill the relation: HA

公开(公告)号：US10888822B2

公开(公告)日：2021-01-12

申请号：US15515761

申请日：2015-09-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Gohei Yamamura ,  Koichi Takada ,  Ryuichiro Hiranabe ,  Hiroki Tomioka

IPC: B01D71/18 ,  C02F1/44 ,  B01D61/00 ,  B01D61/02 ,  B01D69/08 ,  B01D71/52 ,  C02F103/08

Abstract: The present invention provides a separation membrane having excellent separation performance and permeation performance, having high membrane strength, and mainly including a cellulose-based resin. The present invention relates to a separation membrane containing a cellulose ester and having a tensile elasticity of 1,500 to 6,500 MPa.

公开(公告)号：US10478782B2

公开(公告)日：2019-11-19

申请号：US15569859

申请日：2016-04-28

Applicant: TORAY INDUSTRIES, INC.

Inventor： Gohei Yamamura ,  Koichi Takada ,  Ryuichiro Hiranabe ,  Hiroki Tomioka

IPC: B01D69/08 ,  B01D69/00 ,  B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D71/14

Abstract: Problems that the invention is to solve is to provide a composite hollow fiber membrane being excellent in separation performance and permeation performance, having high membrane strength, and capable of being easily produced, and a method for producing the same. The present invention relates to a composite hollow fiber membrane including at least a layer (A) and a layer (B), in which the composite hollow fiber membrane has an outer diameter of 20 to 350 μm and an inner diameter of 14 to 250 μm, the tensile modulus of the composite hollow fiber membrane is from 1,000 to 6,500 MPa, the layer (A) contains a cellulose ester, the thickness of the layer (A) is from 0.01 to 5 μm, and the open pore ratio HA of the layer (A) and the open pore ratio HB of the layer (B) satisfy HA

公开(公告)号：US11103836B2

公开(公告)日：2021-08-31

申请号：US16810423

申请日：2020-03-05

Applicant: TORAY INDUSTRIES, INC.

Inventor： Koichi Takada ,  Gohei Yamamura ,  Ryuichiro Hiranabe ,  Hiroki Tomioka

IPC: B01D69/02 ,  B01D69/08 ,  B01D67/00 ,  B01D71/48 ,  B01D71/56 ,  B01D71/18 ,  C08J5/18 ,  B01D71/16 ,  B01D69/12

Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.

公开(公告)号：US20170296984A1

公开(公告)日：2017-10-19

申请号：US15515761

申请日：2015-09-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Gohei Yamamura ,  Koichi Takada ,  Ryuichiro Hiranabe ,  Hiroki Tomioka

IPC: B01D71/18 ,  B01D71/52 ,  C02F1/44 ,  B01D69/08 ,  C02F103/08

CPC classification number: B01D71/18 ,  B01D61/00 ,  B01D61/02 ,  B01D69/08 ,  B01D71/52 ,  C02F1/44 ,  C02F2103/08

Abstract: The present invention provides a separation membrane having excellent separation performance and permeation performance, having high membrane strength, and mainly including a cellulose-based resin. The present invention relates to a separation membrane containing a cellulose ester and having a tensile elasticity of 1,500 to 6,500 MPa.

公开(公告)号：US11446611B2

公开(公告)日：2022-09-20

申请号：US16499079

申请日：2018-03-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Koichi Takada ,  Gohei Yamamura ,  Hiroki Eimura

IPC: B01D69/02 ,  B01D69/08 ,  B01D71/56 ,  B01D71/18 ,  B01D71/48 ,  D01D5/08 ,  D01D5/24 ,  D01F2/28

Abstract: The present invention addresses the problem of providing a separating membrane mainly comprising a thermoplastic resin having high permeability. The present invention relates to a separating membrane including a thermoplastic resin, wherein the width of voids in the separating membrane is at least equal to 1 nm and at most equal to 1000 nm, and the curvature rate of the voids is at least equal to 1.0 and at most equal to 6.0.

公开(公告)号：US11103835B2

公开(公告)日：2021-08-31

申请号：US16498802

申请日：2018-03-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Hiroki Eimura ,  Gohei Yamamura ,  Koichi Takada

IPC: B01D71/18 ,  B01D67/00 ,  B01D69/02

Abstract: The purpose of the present invention is to provide: a separation film that consists primarily of a cellulose ester and has a high membrane strength and a high elongation degree; and a production method therefor. Provided is a separation film which has a structure comprising a cellulose ester phase and pores, wherein the average pore diameter R is 0.001-6 μm, the value obtained from the expression: breaking strength (MPa)÷(100−porosity (%))×100 is 40 or greater, and the elongation degree is 10% or greater.

公开(公告)号：US10799837B2

公开(公告)日：2020-10-13

申请号：US16073531

申请日：2017-01-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Gohei Yamamura ,  Koichi Takada ,  Hiroki Tomioka

IPC: B01D69/08 ,  B01D69/02 ,  B01D67/00 ,  B01D69/10 ,  B01D69/12 ,  B01D71/12 ,  B01D71/48 ,  B01D71/56 ,  B01D61/02

Abstract: The problem addressed by the present invention is to provide a separation membrane with superior permeation performance and separation performance and having few occurrences of defects. The present invention relates to a separation membrane wherein: the separation membrane has a layer (I) with a thickness of 0.5-100 μm; letting, in a cross-section in the direction of thickness of the layer (I), region a be a region with a depth of 50-150 nm from a surface (surface A), region b a region with a depth of 50-150 nm from the other surface (surface B), and region c a region with a thickness of 100 nm where the depth from both surfaces is the same, the average pore diameter Pa for region a and the average pore diameter Pb for region b are both 0.3-3.0 nm and the average pore diameter Pc for region c is 3.0 nm or less; and the percentage of open area Ha for region a, the percentage of open area Hb for region b, and the percentage of open area Hc for region c satisfy the following equations. 2Hc