公开(公告)号：US20230321611A1

公开(公告)日：2023-10-12

申请号：US18016512

申请日：2022-01-28

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE ,  HIROSE PAPER MFG CO., LTD.

Inventor： Izumi ICHINOSE ,  Edhuan BIN ISMAIL ,  Takako TSUBATA ,  Masataka SAKAMOTO ,  Yoshiki MIZUNO

IPC: B01D69/10 ,  D21H13/24 ,  D21H15/00 ,  B01D71/68 ,  B01D69/02 ,  B32B5/26

CPC classification number: B01D69/1071 ,  B01D69/02 ,  B01D71/68 ,  B32B5/266 ,  D21H13/24 ,  D21H15/00 ,  B01D2325/0233 ,  B01D2325/54 ,  B32B2262/0284 ,  B32B2262/16

Abstract: The present invention provides a nonwoven fabric for a separation membrane which can prevent a bleed-through of a resin solution used for coating in a step of producing the separation membrane, can produce a separation membrane having a large permeate flux of a liquid by non-solvent induced phase separation, has high adhesiveness between a coating membrane and the nonwoven fabric, and can make the coating membrane thin, and a method of producing the same. In an exemplary aspect of the present invention, a two-layer nonwoven fabric 10 for a separation membrane is configured to have a surface layer 11 and a back surface layer 12, a coating surface of a coating solution during membrane formation is a surface 11a of the surface layer 11, and, when the nonwoven fabric 10 is impregnated with the coating solution for membrane formation, the surface layer 11 has a large Laplace force and the back surface layer 12 has a small Laplace force. The nonwoven fabric 10 for a separation membrane can be produced by sequentially papermaking a fiber dispersion liquid DS1 for a surface layer including one or more kinds of fine fibers FF having a small fiber diameter and one or more kinds of thick fibers TF having a fiber diameter larger than that of the fine fibers FF and a fiber dispersion liquid DS2 for a back surface layer consisting of the thick fibers TF using a wet papermaking method.

公开(公告)号：US20250130193A1

公开(公告)日：2025-04-24

申请号：US18692013

申请日：2022-09-16

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Jin KAWAKITA ,  Izumi ICHINOSE

IPC: G01N27/07 ,  G01N27/04 ,  G01N33/487

Abstract: The present invention provides a method for sensing volatile fatty acid with high sensitivity and measuring volatile fatty acid with high accuracy and provides a device for such sensing and measurement. The method for sensing volatile fatty acid of the present invention includes placing a sample in an enclosed space together with a resistance measurement device, wherein the sample is allowed to contain volatile fatty acid, the resistance measurement device measures an electrical characteristic caused by electrical resistance between at least two electrodes disposed to be adjacent to each other at a small spacing on an insulating substrate, and water vapor exists in the enclosed space, measuring the electrical characteristic when a space near the at least two electrodes has a relative humidity satisfying a humidity condition of immediately before occurrence of dew condensation between the at least two electrodes, and comparing an obtained measurement result with reference data obtained under a predetermined condition.

公开(公告)号：US20170001153A1

公开(公告)日：2017-01-05

申请号：US15039916

申请日：2014-11-28

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Izumi ICHINOSE ,  Yoshihisa FUJII ,  Sadaki SAMITSU

IPC: B01D69/12 ,  B01D71/68 ,  B01D67/00 ,  B01D71/02 ,  B01D61/02 ,  B01D61/14

CPC classification number: B01D69/12 ,  B01D61/025 ,  B01D61/027 ,  B01D61/145 ,  B01D67/0072 ,  B01D69/02 ,  B01D69/10 ,  B01D71/021 ,  B01D71/025 ,  B01D71/68 ,  B01D2323/10 ,  B01D2325/02 ,  B01D2325/04 ,  B01D2325/20 ,  B01D2325/22 ,  B01D2325/30

Abstract: Provided is a nanofiltration (NF) or reverse osmosis (RO) membrane made of a hard carbon film that has oil resistance and can efficiently separate not only ions in water but also dye molecules present in an organic solvent, a filtering filter, a two-layer-bonded-type filtering filter, and methods for manufacturing the same, using a nanofiltration (NF) or reverse osmosis (RO) membrane (10) made of a hard carbon film characterized by being made of a hard carbon film, having a thickness (t10) of from 5 nm to 300 nm, and having a maximum pore diameter of less than 0.86 nm.

Abstract translation: 本发明提供一种由具有耐油性的硬质碳膜制成的纳滤（NF）或反渗透膜（RO）膜，不仅可以有效地分离水中的离子，而且可以有效地分离有机溶剂中存在的染料分子，过滤过滤器， 层状粘合型过滤器及其制造方法，使用由硬碳膜制成的纳米过滤（NF）或反渗透（RO）膜（10），其特征在于由硬质碳膜制成，具有厚度 （t10）为5nm〜300nm，最大孔径小于0.86nm。

公开(公告)号：US20240288711A1

公开(公告)日：2024-08-29

申请号：US18287258

申请日：2022-03-28

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE ,  SEED CO., LTD.

Inventor： Izumi ICHINOSE ,  Kunio JONIN ,  Risako YAMANAKA

IPC: G02C7/04 ,  G02B1/04

CPC classification number: G02C7/04 ,  G02B1/043

Abstract: An objective of the present invention is to provide a method for manufacturing a soft ocular lens in which the surface of the lens is hydrophilized by means of plasma processing, wherein a substrate surface can be sufficiently hydrophilized by performing, once, a reaction between the substrate and a hydrophilic polymer. Another object of the present invention is to provide a soft ocular lens with sufficient hydrophilicity which comprises only one layer comprising a hydrophilic polymer on a substrate surface. A substrate comprising a hydrocarbon group-containing polysiloxane is subjected to plasma processing with an inert gas such as nitrogen, to form a radical including Si—CH2 on the substrate surface, and produce radical rearrangement with a hydrophilic polymer, thereby causing the hydrophilic polymer to bind to the substrate surface by recombination of a radical generated in the hydrophilic polymer with the substrate.

公开(公告)号：US20200238223A1

公开(公告)日：2020-07-30

申请号：US16848319

申请日：2020-04-14

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Izumi ICHINOSE ,  Yoshihisa FUJII ,  Sadaki SAMITSU

IPC: B01D69/12 ,  B01D71/02 ,  B01D69/10 ,  B01D69/02 ,  B01D61/14 ,  B01D67/00 ,  B01D61/02 ,  B01D71/68

Abstract: Provided is a nanofiltration (NF) or reverse osmosis (RO) membrane made of a hard carbon film that has oil resistance and can efficiently separate not only ions in water but also dye molecules present in an organic solvent, a filtering filter, a two-layer-bonded-type filtering filter, and methods for manufacturing the same, using a nanofiltration (NF) or reverse osmosis (RO) membrane (10) made of a hard carbon film characterized by being made of a hard carbon film, having a thickness (t10) of from 5 nm to 300 nm, and having a maximum pore diameter of less than 0.86 nm.