公开(公告)号：US20180141035A1

公开(公告)日：2018-05-24

申请号：US15575036

申请日：2016-05-16

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Atsushi NAKAJIMA ,  Naoki SAKAMOTO ,  Takuya MORIKAWA

IPC: B01J39/05 ,  B01J39/20 ,  B01J47/12 ,  B32B27/30 ,  C08J5/22 ,  C08L33/16 ,  C25B13/08

Abstract: The ion exchange membrane according to the present invention comprises a layer A comprising a fluorine-containing polymer having a sulfonic acid group and a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein the layer B has a value of an ion cluster diameter distribution M represented by the following formula (B) of greater than 10: M=(a0)2/(σ)2   (B) wherein M represents an ion cluster diameter distribution, a0 represents an average ion cluster radius, and σ represents a standard deviation of an ion cluster radius.

公开(公告)号：US20180126370A1

公开(公告)日：2018-05-10

申请号：US15574976

申请日：2016-05-16

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Atsushi NAKAJIMA ,  Naoki SAKAMOTO ,  Takuya MORIKAWA

IPC: B01J39/18 ,  B01J47/12 ,  C08J5/22 ,  C08L27/18 ,  C25B9/00 ,  C25B13/08 ,  B32B27/32

CPC classification number: B01J39/18 ,  B01J39/04 ,  B01J39/20 ,  B01J47/12 ,  B32B27/30 ,  B32B27/322 ,  B32B2307/732 ,  C08F16/30 ,  C08J5/2237 ,  C08J5/2281 ,  C08J2327/12 ,  C08J2327/18 ,  C08L27/18 ,  C25B9/00 ,  C25B13/08

Abstract: The ion exchange membrane according to the present invention comprises a layer A comprising a fluorine-containing polymer having a sulfonic acid group and a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein a ratio of an ion cluster diameter of the layer B after electrolysis under the following electrolysis conditions to the ion cluster diameter of the layer B before the electrolysis [(the ion cluster diameter of the layer B after the electrolysis)/(the ion cluster diameter of the layer B before the electrolysis)] is 0.83 to 0.95:(Electrolysis Conditions)in a zero-gap base electrolytic cell where the ion exchange membrane is disposed between an anode chamber to which a 3.5 N aqueous sodium chloride solution is supplied and a cathode chamber to which a 10.8 N aqueous sodium hydroxide solution is supplied, electrolysis is performed for 7 days under conditions having a temperature of 85° C. and a current density of 6 kA/m2.

公开(公告)号：US20200173046A1

公开(公告)日：2020-06-04

申请号：US16671535

申请日：2019-11-01

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Atsushi NAKAJIMA ,  Takuya MORIKAWA

IPC: C25B13/08 ,  C25B9/10 ,  C08J5/22

Abstract: [Problem to be solved] Provided is an ion exchange membrane having both excellent electrolytic characteristics and excellent gas zone damage resistance.[Solution] An ion exchange membrane comprising: a layer A comprising a fluorine-containing polymer having a sulfonic acid group; and a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein the layer B has a thickness of 5 to 30 μm, and the layer B has an ion cluster diameter of 1.8 to 2.48 μm.

公开(公告)号：US20180141036A1

公开(公告)日：2018-05-24

申请号：US15574301

申请日：2016-05-16

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Atsushi NAKAJIMA ,  Yasuo AJISAKA ,  Yoshifumi KADO ,  Naoki SAKAMOTO

IPC: B01J39/20 ,  C08J5/22 ,  B01J47/12 ,  C25B13/08 ,  C25B1/46

CPC classification number: B01J39/20 ,  B01J47/12 ,  B32B27/30 ,  C08J5/2237 ,  C08J2327/12 ,  C08J2327/18 ,  C25B1/46 ,  C25B9/00 ,  C25B13/02 ,  C25B13/08

Abstract: The ion exchange membrane according to the present invention comprises a layer A comprising a fluorine-containing polymer having a sulfonic acid group and a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein an ion exchange capacity of the layer B is 0.81 mEq/g or more, and a value of (an ion cluster diameter of the layer B)/(an ion cluster diameter of the layer A) is 0.67 to 0.89.