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公开(公告)号：US20170136422A1
公开(公告)日：2017-05-18
申请号：US15323022
申请日：2015-06-30
Applicant: TORAY INDUSTRIES, INC.
Inventor： Takafumi OGAWA , Harutoki SHIMURA , Shuji FURUNO , Kiyohiko TAKAYA , Takao SASAKI , Masahiro KIMURA
CPC classification number: B01D71/56 , B01D61/02 , B01D67/0006 , B01D67/0088 , B01D69/00 , B01D69/10 , B01D69/12 , B01D69/125 , B01D2323/08 , B01D2323/12 , B01D2323/30 , B01D2325/06 , B01D2325/30 , B32B3/28 , B32B5/022 , B32B27/34 , C08G69/00 , C08G69/32 , C08J5/18
Abstract: An object of the present invention is to provide a composite semipermeable membrane which has practical water permeability and removing properties and has a high boron removal ratio even after contact with chlorine. A composite semipermeable membrane of the present invention is a composite semipermeable membrane including a substrate, a porous supporting layer and a separation functional layer, which are superposed in this order, in which the separation functional layer includes a crosslinked fully aromatic polyamide, and the crosslinked fully aromatic polyamide has a molar ratio (amide group content) between a total molar proportion of a polyfunctional amine and a polyfunctional aromatic acid halide and a molar proportion of an amide group of 0.86-1.20.
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公开(公告)号：US20220080363A1
公开(公告)日：2022-03-17
申请号：US17415854
申请日：2019-09-30
Applicant: TORAY INDUSTRIES, INC.
Inventor： Tomoya YOSHIZAKI , Tsuyoshi HAMADA , Masami OGATA , Harutoki SHIMURA , Takafumi OGAWA
Abstract: The present invention relates to a composite semipermeable membrane including: a substrate; a porous support layer disposed on the substrate; and a separation functional layer disposed on the porous support layer, in which the separation functional layer includes: a first layer including a crosslinked aromatic polyamide; and a coating layer existing on the first layer and including an aliphatic polyamide including a fluorine atom, and the composite semipermeable membrane has a proportion of the number of fluorine atoms to the total number of atoms of all elements of 0.5% or more and 8% or less, and has a ratio (N/O ratio) of the number of nitrogen atoms to the number of oxygen atoms of 0.8 or more and 1.3 or less.
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公开(公告)号：US20170120201A1
公开(公告)日：2017-05-04
申请号：US15323039
申请日：2015-06-30
Applicant: TORAY INDUSTRIES, INC.
Inventor： Harutoki SHIMURA , Takafumi OGAWA , Shuji FURUNO , Kiyohiko TAKAYA , Takao SASAKI , Masahiro KIMURA
CPC classification number: B01D71/56 , B01D61/02 , B01D67/0093 , B01D69/10 , B01D69/125 , B01D2323/08 , B01D2323/12 , B01D2323/30 , B01D2323/48 , B01D2325/30 , C08G69/265 , C08G69/32
Abstract: An object of the present invention is to provide a composite semipermeable membrane which has practical water permeability and high alkali resistance. The composite semipermeable membrane of the present invention includes: a supporting membrane including a substrate and a porous supporting layer; and a separation functional layer disposed on the porous supporting layer of the supporting membrane, in which the separation functional layer includes a crosslinked fully aromatic polyamide, and when a carboxyl group/amide group molar ratio of the separation functional layer measured by a 13C solid NMR spectroscopy is expressed by x, x is 0.54 or less.
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公开(公告)号：US20240382907A1
公开(公告)日：2024-11-21
申请号：US18693578
申请日：2022-09-26
Applicant: TORAY INDUSTRIES, INC.
Inventor： Kumiko OGAWA , Harutoki SHIMURA , Takafumi OGAWA
Abstract: The present invention relates to a composite semipermeable membrane including: a microporous support layer; and a separation functional layer provided on the microporous support layer, in which the separation functional layer includes a plurality of protrusions formed of a thin membrane including a cross-linked aromatic polyamide, in arbitrary ten cross sections perpendicular to a membrane surface direction and having a length of 2.0 μm in the membrane surface direction, an average number density of the protrusions whose height with respect to a surface of the support layer as reference is one-fifth or more of a ten-point average surface roughness of the separation functional layer is 13.0 protrusions/μm or more, and an average value of a deformation amount when the protrusions are pressed with a force of 5 nN is 2.2 nm or less, and a standard deviation of the deformation amount is 1.2 nm or less.
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公开(公告)号：US20170368510A1
公开(公告)日：2017-12-28
申请号：US15539347
申请日：2015-12-25
Applicant: TORAY INDUSTRIES, INC.
Inventor： Hiroaki TANAKA , Kazuki SATO , Takafumi OGAWA , Takao SASAKI
CPC classification number: B01D71/56 , B01D61/02 , B01D61/14 , B01D67/0093 , B01D69/10 , B01D69/12 , B01D69/125 , B01D2325/30 , C08G69/26 , C08G69/46
Abstract: The present invention relates to a composite semipermeable membrane including a supporting membrane and a separation functional layer disposed on the supporting membrane, in which the separation functional layer comprises an aromatic polyamide, the aromatic polyamide has side chains and terminal groups, at least one of the side chains and terminal groups of the aromatic polyamide being an amino group, at least one of the side chains and terminal groups of the aromatic polyamide is a substituent having a structure represented by formula (1): —NXY or formula (2): —NXYZ, and in the aromatic polyamide, a content A of substituents having structures represented by formula (1) and formula (2) and a content B of amide groups satisfy 0.005≦A/B≦0.15.
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Patent Agency Ranking
公开(公告)号：US20160008773A1
公开(公告)日：2016-01-14
申请号：US14771057
申请日：2014-02-28
Applicant: TORAY INDUSTRIES, INC.
Inventor： Keisuke YONEDA , Shunsuke TABAYASHI , Takafumi OGAWA , Takao SASAKI , Masahiro KIMURA
CPC classification number: B01D71/56 , B01D67/0006 , B01D67/0093 , B01D69/02 , B01D69/12 , B01D69/125 , B01D2323/02 , B01D2323/30 , B01D2325/20 , B32B5/12 , B32B27/34 , C02F1/44 , C02F2101/108 , C02F2103/08
Abstract: A composite semipermeable membrane including: a substrate; a porous supporting layer formed on the substrate; and a separation functional layer formed on the porous supporting layer, in which the separation functional layer contains crosslinked wholly aromatic polyamide as a main component and contains a carboxy group, a ratio of (molar equivalent of the carboxy group)/(molar equivalent of an amide group) in functional groups contained in the separation functional layer is 0.40 or more, and an average ratio of oxygen atoms/nitrogen atoms in front and rear sides of the separation functional layer is 0.95 or less.
Abstract translation: 一种复合半透膜，包括：基材; 形成在所述基板上的多孔支撑层; 以及形成在多孔支持层上的分离功能层，其中分离功能层含有交联的全芳族聚酰胺作为主要成分并含有羧基，（摩尔当量的羧基）/（摩尔当量的 酰胺基）为0.40以上，分离功能层的前后侧的氧原子/氮原子的平均比例为0.95以下。
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公开(公告)号：US20230001363A1
公开(公告)日：2023-01-05
申请号：US17772608
申请日：2020-10-30
Applicant: TORAY INDUSTRIES, INC.
Inventor： Takaaki YASUDA , Yohei ADACHI , Shinya MITSUI , Harutoki SHIMURA , Takafumi OGAWA
Abstract: The present invention relates to a composite semipermeable membrane including: a support membrane including a base and a porous support layer; and a separation functional layer disposed on the porous support layer and including a crosslinked aromatic polyamide, in which the separation functional layer contains sulfo groups in an amount of 7.0×10−5 to 5.0×10−2 g/m2 and includes a structure represented by the formula 1.
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8.发明申请公开(公告)号：US20190388844A1
公开(公告)日：2019-12-26
申请号：US16482108
申请日：2018-01-31
Applicant: TORAY INDUSTRIES, INC.
Inventor： Hiroki MINEHARA , Hiroaki TANAKA , Monami SUZUKI , Takafumi OGAWA
Abstract: The present invention pertains to a semipermeable composite membrane having a support film and a separation function layer, wherein, (A) in a semipermeable composite membrane equilibrated under specific conditions, the half value width H of an absorption peak between 3900 cm−1 and 2900 cm−1 in a difference spectrum Sd obtained by subtracting IR spectrum S2 from IR spectrum S1 is 355-373, and (B) in the IR spectrum S1, the value F obtained by dividing the area of the absorption intensity between 3900 cm−1 and 2900 cm−1 by the absorbance at the peak top between 1690 cm−1 and 1630 cm−1 is at least 850.
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公开(公告)号：US20190022602A1
公开(公告)日：2019-01-24
申请号：US16080438
申请日：2017-02-28
Applicant: TORAY INDUSTRIES, INC.
Inventor： Takahiro TOKUYAMA , Takafumi OGAWA , Hiroki TOMIOKA
Abstract: The present invention relates to a layered semipermeable membrane satisfying the conditions below. (A) The maximum peak intensity between 3700 and 2900 cm−1 is 0.08 or greater in the difference spectrum between an IR spectrum measured at 25° C. and 97% relative humidity and an IR spectrum measured at 25° C. and 3% relative humidity. (B) The peak top wavenumber between 3700 and 2900 cm−1 of the aforementioned difference spectrum is 3400 cm−1 to 3550 cm−1. (C) The N1s peak has a maximum value at 401 eV or greater in X-ray photoelectron spectroscopy in which X-rays are radiated to a coat layer.
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公开(公告)号：US20170326506A1
公开(公告)日：2017-11-16
申请号：US15531357
申请日：2015-11-27
Applicant: TORAY INDUSTRIES, INC.
Inventor： Takahiro TOKUYAMA , Hiroki TOMIOKA , Takafumi OGAWA , Yutaro SUZUKI
CPC classification number: B01D71/70 , B01D69/02 , B01D69/10 , B01D69/12 , B01D71/16 , B01D71/56 , B01D2325/022 , B01D2325/04 , B01D2325/30 , C02F1/44 , C02F2101/12 , C08F230/08 , Y02A20/131
Abstract: The present invention provides a semipermeable membrane which has resistance to oxidizing agents even in the presence of heavy metals and which, despite this, can have salt-removing performance equal to that of semipermeable membranes having poor resistance to oxidizing agents. A coated semipermeable membrane of the invention includes a semipermeable layer and a polymer layer formed on the semipermeable layer, and the polymer layer includes a polymerization product formed by both condensation of hydrolyzable groups possessed by the following compound (A) and polymerization of the compound (A) with the following compound (B): (A) a silicon compound having a silicon atom, a reactive group including an ethylenically unsaturated group directly bonded to the silicon atom, and a hydrolyzable group directly bonded to the silicon atom; and (B) a compound other than the compound (A), which has both a hydrophilic group and an ethylenically unsaturated group.
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