公开(公告)号：US20190118144A1

公开(公告)日：2019-04-25

申请号：US16091918

申请日：2017-04-13

Applicant: ASTOM Corporation

Inventor： Masayuki KISHINO ,  Kouta YUZUKI ,  Kenji FUKUTA

IPC: B01D61/44 ,  B01J47/12 ,  B01J39/04 ,  B01J39/20 ,  B01J41/04 ,  B01J41/14 ,  C08J5/22 ,  B01D61/46 ,  B01D69/02 ,  B01D69/12 ,  B01D71/28

Abstract: A bipolar membrane in which a cation-exchange membrane and an anion-exchange membrane are joined to each other, wherein a leakage ratio of gluconic acid at 60° C. is not more than 1.0%, and the cation-exchange membrane is supported by a polyolefin reinforcing member and, further, contains a polyvinyl chloride.

公开(公告)号：US20230119424A1

公开(公告)日：2023-04-20

申请号：US17912421

申请日：2021-03-12

Applicant: ASTOM CORPORATION

Inventor： Takaaki OKAMURA ,  Masayuki KISHINO ,  Kenji FUKUTA

IPC: B01D69/02 ,  B01D71/28 ,  B01D69/10 ,  B01D69/12 ,  B01J47/127 ,  B01J41/14 ,  B01J41/05 ,  C08J5/22

Abstract: An anion-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric and an anion-exchange resin, and has an electrical resistance measured using 0.5 M NaCl solution at 25° C. of 1.0 Ω•cm2 or more to 2.5 Ω•cm2 or less, a bursting strength of 0.7 MPa or more to 1.2 MPa or less, a water permeation rate measured using pressured water at 0.1 MPa of 300 ml/(m2•hr) or less, a thickness of the substrate of 90 µm or more to 160 µm or less, and an open area ratio of the substrate of 35% or more to 55% or less.

公开(公告)号：US20190176098A1

公开(公告)日：2019-06-13

申请号：US16326009

申请日：2017-08-30

Applicant: ASTOM Corporation

Inventor： Maki KINOSHITA ,  Masayuki KISHINO ,  Shunichiro NAKATSUKASA ,  Kenji FUKUTA

IPC: B01D71/28 ,  B01D61/46 ,  B01D69/02 ,  B01D69/14 ,  B01J47/12

Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.

公开(公告)号：US20210187446A1

公开(公告)日：2021-06-24

申请号：US17196228

申请日：2021-03-09

Applicant: ASTOM Corporation

Inventor： Maki KINOSHITA ,  Masayuki KISHINO ,  Shunichiro NAKATSUKASA ,  Kenji FUKUTA

IPC: B01D71/28 ,  B01D71/26 ,  B01D67/00 ,  C08J5/22 ,  B01J47/12 ,  B01D69/02 ,  B01D69/14

Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.

公开(公告)号：US20210008499A1

公开(公告)日：2021-01-14

申请号：US16982275

申请日：2019-03-19

Applicant: ASTOM CORPORATION

Inventor： Minoru KAWASHIMA ,  Kenji FUKUTA

IPC: B01D61/44 ,  B01D67/00 ,  B01D69/14 ,  B01D69/02 ,  B01J47/12 ,  B01J39/04 ,  B01J39/18 ,  B01J41/04 ,  B01J41/12 ,  C08J5/22

Abstract: A bipolar membrane BP characterized in that particles 5 of a basic metal chloride are distributed in the interface between a cation-exchange membrane 1 and an anion-exchange membrane 3.

公开(公告)号：US20230166219A1

公开(公告)日：2023-06-01

申请号：US17912469

申请日：2021-03-08

Applicant: ASTOM CORPORATION

Inventor： Naoto TAKASHINA ,  Masayuki KISHINO ,  Kenji FUKUTA

IPC: B01D67/00 ,  B01D69/10 ,  B01D71/30 ,  B01D69/02 ,  B01D71/28 ,  C08J5/22 ,  B01J39/05 ,  B01J39/20 ,  B01J47/127

CPC classification number: B01D67/0006 ,  B01D69/1071 ,  B01D71/301 ,  B01D69/02 ,  B01D71/281 ,  C08J5/2243 ,  B01J39/05 ,  B01J39/20 ,  B01J47/127 ,  B01D2325/24 ,  B01D2325/26 ,  B01D2325/42 ,  B01D2325/22 ,  C08J2325/12 ,  C08J2427/06 ,  C08J2423/06

Abstract: A cation-exchange membrane using a polyolefin-based substrate with reduced swelling of an ion-exchange resin and a low electrical resistance is provided. The cation-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric, and a sulfonic acid group-containing cation-exchange resin. A portion of the cation-exchange membrane other than the substrate has 23 mass % or more to 35 mass % or less of polyvinyl chloride.

公开(公告)号：US20230067288A1

公开(公告)日：2023-03-02

申请号：US17982998

申请日：2022-11-08

Applicant: ASTOM Corporation

Inventor： Masayuki KISHINO ,  Kouta YUZUKI ,  Kenji FUKUTA

IPC: B01D61/44 ,  B01J47/12 ,  B01D61/46 ,  C08J5/22 ,  C25B13/02 ,  C25B13/08 ,  B01D69/02 ,  B01D69/12 ,  B01D71/28 ,  B01J39/04 ,  B01J39/20 ,  B01J41/04 ,  B01J41/14

Abstract: A bipolar membrane in which a cation-exchange membrane and an anion-exchange membrane are joined to each other, wherein a leakage ratio of gluconic acid at 60° C. is not more than 1.0%, and the cation-exchange membrane is supported by a polyolefin reinforcing member and, further, contains a polyvinyl chloride.

公开(公告)号：US20240181403A1

公开(公告)日：2024-06-06

申请号：US18283637

申请日：2021-12-27

Applicant: ASTOM Corporation

Inventor： Maki KINOSHITA ,  Masayuki KISHINO ,  Kenji FUKUTA

IPC: B01D69/12 ,  B01D71/26 ,  B01D71/28 ,  B01D71/30

CPC classification number: B01D69/125 ,  B01D71/261 ,  B01D71/283 ,  B01D71/301 ,  B01D2325/04 ,  B01D2325/16 ,  B01D2325/42

Abstract: An anion exchange membrane includes an anion exchange resin layer 3 reinforced with a backing material sheet 5. The anion exchange resin layer 3 includes an anion exchange resin that has as an anion exchange group a pyridinium group formed by protonation of a pyridyl group, and a vinyl chloride resin as a thickener. The backing material sheet 5 is made of a polyethylene woven fabric.

公开(公告)号：US20170216832A1

公开(公告)日：2017-08-03

申请号：US15328673

申请日：2015-07-16

Applicant: ASTOM CORPORATION

Inventor： Tomoaki TAKAHASHI ,  Hiroshi MIYAZAWA ,  Nobuyuki TANAKA ,  Nobuhiko OHMURA ,  Kazuo MIZUGUCHI ,  Kenji FUKUTA

IPC: B01J39/20 ,  B01J41/07 ,  B01J41/14 ,  B01J47/12 ,  C08J5/22 ,  B01D71/26 ,  B32B27/08 ,  B32B27/32 ,  B32B38/00 ,  B01D67/00 ,  B01D69/12 ,  B01D69/02 ,  B01J39/05 ,  B32B3/26

Abstract: An ion exchange membrane having a structure that an ion exchange resin is filled in spaces of a porous base film, the porous base film has a structure that at least two porous olefin resin layers are laminated with a bonding strength of 100 gf/cm or more to less than 700 gf/cm and a Gurley air permeance of 500 sec/100 ml or less in terms of a 100 μm thick film. In this ion exchange membrane, base film has high air permeability though it has a multi-layer structure that a plurality of porous resin films are bonded together, and therefore a rise in electric resistance caused by the lamination of the base sheets is effectively suppressed.