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：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.