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公开(公告)号：US20180117537A1
公开(公告)日：2018-05-03
申请号：US15569859
申请日：2016-04-28
Applicant: TORAY INDUSTRIES, INC.
Inventor： Gohei YAMAMURA , Koichi TAKADA , Ryuichiro HIRANABE , Hiroki TOMIOKA
CPC classification number: B01D69/081 , B01D69/00 , B01D69/02 , B01D69/08 , B01D69/10 , B01D69/12 , B01D71/14
Abstract: Problems that the invention is to solve is to provide a composite hollow fiber membrane being excellent in separation performance and permeation performance, having high membrane strength, and capable of being easily produced, and a method for producing the same. The present invention relates to a composite hollow fiber membrane including at least a layer (A) and a layer (B), in which the composite hollow fiber membrane has an outer diameter of 20 to 350 μm and an inner diameter of 14 to 250 μm, the tensile modulus of the composite hollow fiber membrane is from 1,000 to 6,500 MPa, the layer (A) contains a cellulose ester, the thickness of the layer (A) is from 0.01 to 5 μm, and the open pore ratio HA of the layer (A) and the open pore ratio HB of the layer (B) satisfy HA
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2.发明申请公开(公告)号：US20200246759A1
公开(公告)日：2020-08-06
申请号：US16853936
申请日：2020-04-21
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koichi TAKADA , Gohei YAMAMURA , Ryuichiro HIRANABE , Masayuki HANAKAWA , Hiroshi TAKAHASHI , Takaaki MIHARA , Masahiro KIMURA , Hiroki TOMIOKA
Abstract: The problem to be solved by the present invention is to provide a separation film mainly comprising a cellulose-based resin having high permeability. The present invention pertains to a separation film containing a cellulose ester, wherein the separation film is provided with a bicontinuous structure comprising voids and phases containing the cellulose ester, and the width of the voids is 1 to 200 nm inclusive.
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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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Patent Agency Ranking
公开(公告)号：US20160317973A1
公开(公告)日：2016-11-03
申请号：US15104867
申请日：2014-06-11
Applicant: TORAY INDUSTRIES, INC.
Inventor： Takahiro TOKUYAMA , Hiroki TOMIOKA
CPC classification number: B01D67/0013 , B01D61/002 , B01D67/0006 , B01D67/0009 , B01D67/0011 , B01D71/56 , B01D71/64 , B01D71/68 , B01D2323/16 , B01D2323/30 , B01D2325/04 , B01D2325/24 , C08J5/18 , C08J5/2256 , C08J2377/00 , C08J2379/08 , C08J2381/06
Abstract: Provided is a production process for a semipermeable membrane having both semipermeability and strength and also provided is the semipermeable membrane. The process comprises the step of forming a liquid membrane from a membrane-forming solution comprising materials (A) to (C), material (A) being a polymer having a repeating unit structure comprising one or more kinds of structural moieties selected from the group consisting of an amide group, an imide group, a sulfonyl group, and a heterocyclic ring, material (B) being a good solvent for material (A), material (C) being a salt, and the step of removing the solvent from the liquid membrane.
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公开(公告)号：US20190046931A1
公开(公告)日：2019-02-14
申请号：US16073531
申请日：2017-01-27
Applicant: TORAY INDUSTRIES, INC.
Inventor： Gohei YAMAMURA , Koichi TAKADA , Hiroki TOMIOKA
Abstract: The problem addressed by the present invention is to provide a separation membrane with superior permeation performance and separation performance and having few occurrences of defects. The present invention relates to a separation membrane wherein: the separation membrane has a layer (I) with a thickness of 0.5-100 μm; letting, in a cross-section in the direction of thickness of the layer (I), region a be a region with a depth of 50-150 nm from a surface (surface A), region b a region with a depth of 50-150 nm from the other surface (surface B), and region c a region with a thickness of 100 nm where the depth from both surfaces is the same, the average pore diameter Pa for region a and the average pore diameter Pb for region b are both 0.3-3.0 nm and the average pore diameter Pc for region c is 3.0 nm or less; and the percentage of open area Ha for region a, the percentage of open area Hb for region b, and the percentage of open area Hc for region c satisfy the following equations. 2Hc
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7.发明申请公开(公告)号：US20180280893A1
公开(公告)日：2018-10-04
申请号：US15764390
申请日：2016-09-30
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koichi TAKADA , Gohei YAMAMURA , Ryuichiro HIRANABE , Masayuki HANAKAWA , Hiroshi TAKAHASHI , Takaaki MIHARA , Masahiro KIMURA , Hiroki TOMIOKA
Abstract: The problem to be solved by the present invention is to provide a separation film mainly comprising a cellulose-based resin having high permeability. The present invention pertains to a separation film containing a cellulose ester, wherein the separation film is provided with a bicontinuous structure comprising voids and phases containing the cellulose ester, and the width of the voids is 1 to 200 nm inclusive.
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公开(公告)号：US20180065093A1
公开(公告)日：2018-03-08
申请号：US15563315
申请日：2016-03-31
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koichi TAKADA , Gohei YAMAMURA , Ryuichiro HIRANABE , Hiroki TOMIOKA
CPC classification number: B01D71/18 , B01D67/002 , B01D69/02 , B01D69/08 , B01D69/081 , B01D69/12 , B01D71/16 , B01D71/48 , B01D71/56 , B01D2325/021 , B01D2325/04 , C08J5/18
Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.
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公开(公告)号：US20140377460A1
公开(公告)日：2014-12-25
申请号：US14481338
申请日：2014-09-09
Applicant: TORAY INDUSTRIES, INC.
Inventor： Jun OKABE , Hiroki TOMIOKA , Masahiro HENMI
CPC classification number: B01D69/125 , B01D69/10 , B01D69/12 , B01D71/70 , B01D2323/02 , B01D2325/36
Abstract: In order to obtain a composite separation membrane which has excellent chemical resistance, separation performance and water permeability at the same time, the present invention provides a composite separation membrane comprising a separation function layer on a porous supporting membrane, characterized in that the separation function layer contains at least a polymer of a polyhedral silsesquioxane represented by the following general formula (a) and a hydrophilic monomer. (R1SiO1.5)n(R2SiO1.5)m General Formula (a) (In the formula, R1 includes a polymerizable reactive moiety; R2 represents a hydrogen atom or an alkyl group, which may be substituted; and n and m each represent an integer satisfying n>2 or m>0, with n+m being 8, 10 or 12.)
Abstract translation: 为了获得同时具有优异的耐化学性，分离性能和透水性的复合分离膜，本发明提供一种复合分离膜，其在多孔支撑膜上具有分离功能层，其特征在于，分离功能层 含有至少一种由以下通式（a）表示的多面体倍半硅氧烷的聚合物和亲水性单体。 （R1SiO1.5）n（R2SiO1.5）m通式（a）（式中，R 1包含可聚合反应性部分; R 2表示氢原子或烷基，可以被取代; n和m各自表示 满足n> 2或m> 0的整数，n + m为8,10或12.）
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