公开(公告)号：US20210268430A1

公开(公告)日：2021-09-02

申请号：US17254765

申请日：2019-06-20

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping Lin ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson

IPC: B01D53/22 ,  B01D53/26 ,  B01D69/14 ,  B01D71/02 ,  B01D71/40 ,  B01D71/38 ,  B01D69/02 ,  B01D67/00 ,  B01D69/10

Abstract: Described herein is a graphene oxide and polymer based selectively permeable element that provides selective gas, and vapor resistance for dehumidification applications. The graphene oxide is cross-linked with polyvinyl alcohol, the polymer comprises an ammonium salt polymer such as poly(diallyldimethylammonium) chloride. Also described is a selectively permeable element where the graphene may be selected from reduced graphene oxide, graphene oxide, and is also functionalized or crosslinked. Also described is a selectively permeable element where there is crosslinking between the graphene and/or the polymers to provide enhanced gas resistance with water vapor permeability. A selectively permeable device is also described that incorporates the selectively permeable element and further comprises a substrate and a protective coating, encompassing the selectively permeable element. Also described are methods for making the aforementioned selectively permeable elements and related devices.

公开(公告)号：US20210229048A1

公开(公告)日：2021-07-29

申请号：US17050812

申请日：2019-05-02

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Lin Weiping ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson

IPC: B01D71/02 ,  B01D69/12 ,  B01D71/52 ,  B01D71/40

Abstract: Described herein is a composite comprising a graphene material and a sulfonated polymer material. The graphene/sulfonated polymer composite is coated onto a substrate to provide a selectively permeable membrane. The selectively permeable membranes of the present disclosure provide high moisture permeability and low gas permeability.

公开(公告)号：US20210162353A1

公开(公告)日：2021-06-03

申请号：US17044941

申请日：2019-04-03

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping LIN ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson ,  Wanyun Hsieh ,  Yuji Yamashiro ,  Takashi Kondo

IPC: B01D69/14 ,  B01D69/10 ,  B01D69/12 ,  B01D69/02 ,  B01D71/02 ,  B01D71/80 ,  B01D71/62 ,  B01D71/66 ,  B01D53/22 ,  B01D53/26 ,  B01D67/00 ,  F24F3/14

Abstract: Described herein are crosslinked graphene oxide based composite membranes that provide selective resistance for gases while providing water vapor permeability. Such composite membranes have a high water/air selectivity in permeability. The methods for making such membranes, and using the membranes for dehydrating or removing water vapor from gases are also described.

公开(公告)号：US10773218B2

公开(公告)日：2020-09-15

申请号：US15915459

申请日：2018-03-08

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Peng Wang ,  Rebecca Romero ,  Isamu Kitahara ,  Weiping Lin

IPC: B01D53/22 ,  B01D69/14 ,  B01D53/26 ,  B01D71/38 ,  B01D61/36 ,  B01D67/00 ,  C01B32/198 ,  B01D71/02 ,  C08J3/24

Abstract: Described herein is a graphene material such as graphene oxide and polymer based selectively permeable element that provides selective permeability between polar and non-polar molecules such as fluid, gas or vapor. The methods for making these selectively permeable elements and related devices are also described.

公开(公告)号：US10077362B2

公开(公告)日：2018-09-18

申请号：US15306428

申请日：2015-04-21

Applicant: NITTO DENKO CORPORATION

Inventor： Tao Gu ,  Bogumila Rachwal ,  Ozair Siddiqui ,  Stanislaw Rachwal ,  Isamu Kitahara ,  Sergey Simavoryan ,  Peng Wang ,  Michiharu Yamamoto

IPC: G02B1/04 ,  G02B5/23 ,  G02F1/29 ,  C09B62/008 ,  C09K19/60 ,  C09D133/12 ,  C08L33/12 ,  G11B7/24044 ,  C08K5/23 ,  G11B7/244 ,  G11B7/245 ,  C07C255/65 ,  C07D231/12 ,  C07D239/26 ,  C07D249/06 ,  C07D261/08 ,  C07D213/42

CPC classification number: C09B62/0081 ,  C07C255/65 ,  C07D213/42 ,  C07D231/12 ,  C07D239/26 ,  C07D249/06 ,  C07D261/08 ,  C08K5/23 ,  C08L33/12 ,  C09B29/0003 ,  C09B29/0011 ,  C09B29/0807 ,  C09B62/0083 ,  C09B62/0086 ,  C09B62/0088 ,  C09D133/12 ,  C09K19/601 ,  G02B1/04 ,  G02B5/23 ,  G11B7/24044 ,  G11B7/244 ,  G11B7/245

Abstract: Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.

公开(公告)号：US20180193806A1

公开(公告)日：2018-07-12

申请号：US15915459

申请日：2018-03-08

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Peng Wang ,  Rebecca Romero ,  Isamu Kitahara ,  Weiping Lin

IPC: B01D69/14 ,  C08J3/24 ,  C01B32/198 ,  B01D53/26 ,  B01D71/02 ,  B01D71/38

Abstract: Described herein is a graphene material such as graphene oxide and polymer based selectively permeable element that provides selective permeability between polar and non-polar molecules such as fluid, gas or vapor. The methods for making these selectively permeable elements and related devices are also described.