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公开(公告)号：US10974206B2
公开(公告)日：2021-04-13
申请号：US14894917
申请日：2014-05-29
摘要： In order to provide a composite semipermeable membrane which combines strength and water permeability, the present invention provides a composite semipermeable membrane including: a supporting membrane including a substrate and a porous support; and a separation functional layer disposed on the porous support, in which the substrate has a weight A per unit area, a portion of the porous support which is located within the substrate has a weight B per unit area, and a sum of the weight A and the weight B, (A+B), is 30 to 100 g/m2, and a ratio between the weight A and the weight B, B/A, is 0.10 to 0.60.
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公开(公告)号：US09901883B2
公开(公告)日：2018-02-27
申请号：US15539355
申请日：2015-12-25
IPC分类号： B01D33/21 , B01D39/00 , B01D39/14 , B01D71/26 , B01D63/02 , B01D71/34 , B01D69/08 , B01D69/02
CPC分类号： B01D71/34 , B01D67/0016 , B01D67/0018 , B01D67/0027 , B01D69/02 , B01D69/08 , B01D71/32 , B01D2323/08 , B01D2325/02 , B01D2325/24 , B01D2325/30 , B01D2325/32 , B01D2325/34
摘要： An object of the present invention is to provide a porous hollow-fiber membrane having high strength while maintaining high pure-water permeation performance. A porous hollow-fiber membrane of the present invention is a porous hollow-fiber membrane including a fluororesin-based polymer, in which the porous hollow-fiber membrane has a columnar texture oriented in a longitudinal direction of the porous hollow-fiber membrane, and a molecular chain of the fluororesin-based polymer is oriented in the longitudinal direction of the porous hollow-fiber membrane.
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公开(公告)号：US09802160B2
公开(公告)日：2017-10-31
申请号：US15033488
申请日：2014-10-30
发明人： Hiroyuki Yamada , Hiroho Hirozawa , Kentaro Takagi , Yoshiki Okamoto , Yoshie Marutani , Shunsuke Tabayashi , Takao Sasaki , Masahiro Kimura , Yuji Tanaka
CPC分类号： B01D63/10 , B01D69/12 , B01D2313/146 , B01D2325/00 , B01D2325/08 , C08L23/10 , C08L23/12 , C08L23/16 , C08L53/00 , C08L2205/025 , C08L2205/03 , C08L2205/035
摘要： The present invention provides a separation membrane and a separation membrane element which are capable of exhibiting good water production performance and excellent in handleability and process passage. A separation membrane of the present invention is a separation membrane including: a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member adhered to the permeate-side face of the separation membrane main body, in which the permeate-side channel member includes a composition containing at least a high-crystalline polypropylene (A) and satisfies the following requirements (a) and (b): (a) a content of the high-crystalline polypropylene (A) in the composition is from 40 to 95% by weight; and (b) the permeate-side channel member has a melting endothermic energy amount (ΔH) of from 20 to 70 J/g.
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4.发明申请公开(公告)号：US20150283515A1
公开(公告)日：2015-10-08
申请号：US14411418
申请日：2013-06-27
发明人： Masakazu Koiwa , Tomoko Mitsuhata , Harutoki Shimura , Yoshie Marutani , Kiyohiko Takaya , Shunsuke Tabayashi , Takafumi Ogawa , Takao Sasaki , Masahiro Kimura , Masahiro Henmi
CPC分类号： B01D69/10 , B01D61/025 , B01D61/027 , B01D65/08 , B01D69/02 , B01D69/12 , B01D2325/04 , B01D2325/06 , B01D2325/20 , B01D2325/28 , C02F1/441 , C02F1/442 , C02F2103/08
摘要： An object of the invention is to provide a composite semipermeable membrane which has the high ability to remove substances other than water and high water permeability and which suffers little decrease in performance due to fouling. The invention relates to a composite semipermeable membrane including: a supporting membrane having a substrate and a porous supporting layer disposed on the substrate; and a separation functional layer disposed on the supporting membrane, in which, in any ten sites of cross-sections of the composite semipermeable membrane which have a width of 2.0 μm in a membrane surface direction, the projections having a height of one-fifth or more of a 10-point average surface roughness of the separation functional layer have a standard deviation of height of 60 nm or less.
摘要翻译： 本发明的目的是提供一种复合半透膜，其具有除水以外的物质和高透水性的高能力，并且由于结垢而几乎不降低性能。 本发明涉及一种复合半透膜，包括：支撑膜，其具有基底和设置在基底上的多孔支撑层; 以及设置在所述支撑膜上的分离功能层，其中在所述复合半透膜的横截面的十个位置中，膜表面方向上的宽度为2.0μm，所述突起的高度为五分之一或 分离功能层的10点平均表面粗糙度的更多的高度的标准偏差为60nm以下。
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公开(公告)号：US20150190759A1
公开(公告)日：2015-07-09
申请号：US14410927
申请日：2013-06-27
发明人： Harutoki Shimura , Yoshie Marutani , Koji Nakatsuji , Kiyohiko Takaya , Masakazu Koiwa , Takao Sasaki , Masahiro Kimura
CPC分类号： B01D69/12 , B01D67/0016 , B01D69/02 , B01D69/125 , B01D71/56 , B01D2323/12 , B01D2325/06 , B01D2325/20 , C02F1/441 , C02F2103/08
摘要： A composite semipermeable membrane includes a porous supporting membrane and a separation functional layer, in which, in cross-sections having a length of 2.0 μm in a membrane surface direction, the average number density of projections in the separation functional layer which have a height of one-fifth or more of the 10-point average surface roughness is 10.0-30.0 projections/μm and the projections have an average height less than 100 nm, and in which a water production rate and a salt rejection are predetermined values or more after an aqueous solution is passed through under certain conditions.
摘要翻译： 复合半透膜包括多孔支撑膜和分离功能层，其中在膜表面方向上具有2.0μm长度的横截面中，分离功能层中的突起的平均数密度为 十分之一平均表面粗糙度的十五分之一或更多是10.0-30.0个突起/μm，并且突起具有小于100nm的平均高度，并且其中产水率和拒水度是预定值以上 水溶液在一定条件下通过。
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6.发明申请SEPARATION MEMBRANE, SEPARATION MEMBRANE ELEMENT AND METHOD FOR PRODUCING SEPARATION MEMBRANE 审中-公开分离膜，分离膜元件和生产分离膜的方法公开(公告)号：US20140251896A1
公开(公告)日：2014-09-11
申请号：US14348299
申请日：2012-09-28
发明人： Hiroho Hirozawa , Masakazu Koiwa , Kentaro Takagi , Yoshiki Okamoto , Hiroyuki Yamada , Tsuyoshi Hamada , Katsufumi Oto , Masahiro Kimura
CPC分类号： B01D67/00 , B01D63/06 , B01D67/0006 , B01D67/0088 , B01D69/02 , B01D69/10 , B01D69/125 , B01D71/56 , B01D2323/40 , B01D2325/08 , B01D2325/24
摘要： A separation membrane, including: a separation membrane main body having at least a base material and a separating functional layer; and a flow path material independently fixed in the thickness direction of the base material, and having a compression elasticity of 0.1-5.0 GPa.
摘要翻译： 一种分离膜，包括：至少具有基材和分离功能层的分离膜主体; 以及独立地固定在基材的厚度方向上并且具有0.1-5.0GPa的压缩弹性的流路材料。
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7.发明授权公开(公告)号：US11198100B2
公开(公告)日：2021-12-14
申请号：US16314295
申请日：2017-06-29
发明人： Tsuyoshi Hamada , Jun Okabe , Takafumi Ogawa , Koji Nakatsuji , Masahiro Kimura
摘要： The present invention relates to a composite semipermeable membrane including: a supporting membrane including a substrate and a porous supporting layer; and a separation functional layer disposed on the porous supporting layer, in which the separation functional layer includes: a crosslinked polyamide; and a hydrophilic polymer which is a polymer of a monomer having an ethylenically unsaturated group, and a surface of the separation functional layer has a ratio of the number of oxygen atoms to the number of nitrogen atoms (O/N ratio), both determined by X-ray photoelectron spectrometry, of 1.5-10, and a standard deviation of the O/N ratio of 0.15 or larger.
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公开(公告)号：US11141698B2
公开(公告)日：2021-10-12
申请号：US16066564
申请日：2016-12-26
发明人： Shun Shimura , Kenta Iwai , Masayuki Hanakawa , Tamotsu Kitade , Masahiro Kimura , Atsushi Kobayashi , Aya Nishio
IPC分类号： B01D63/02 , B01D65/02 , B01D69/02 , B01D71/34 , B01D65/08 , C02F1/44 , B01D67/00 , B01D69/08
摘要： The present invention provides a hollow fiber membrane module that can effectively resolve the accumulation of suspended solids within the membrane module, lower running costs, and also operate stably. The present invention relates to a hollow fiber membrane molecule provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated within the cylindrical case; and a first potting part accommodated within the cylindrical case and attaching the plurality of hollow fiber membranes together such that the end parts of the plurality of hollow membrane fibers at a first end side of the cylindrical case are open. The hollow fiber membranes are porous hollow fiber membranes having a breaking strength of 23 MPa, and the hollow membrane module has a membrane area per unit volume of 800-3700 m2/m3. The filling fraction for the hollow fiber membranes in a cross-section orthogonal to the direction of height of the cylindrical case is 25-38%.
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公开(公告)号：US10456753B2
公开(公告)日：2019-10-29
申请号：US15755755
申请日：2016-06-24
发明人： Takaaki Yasuda , Masayuki Hanakawa , Kenta Iwai , Toshiyuki Ishizaki , Tamotsu Kitade , Masahiro Kimura
摘要： The present invention provides a porous hollow fiber membrane that has both high strength and high pure water permeability, and that exhibits excellent thermal deformation resistance. The present invention is related to a porous hollow fiber membrane containing a fluororesin-based polymer, and a manufacturing method of the membrane comprises a drawing step and a relaxing step. The porous hollow fiber membrane is characterized in that: the molecular chain of the polymer is oriented in the longitudinal direction of the hollow fiber membrane; and at the same time internal distortion of oriented non-crystalline chains, which is disadvantageous in terms of entropy, is alleviated.
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公开(公告)号：US09827536B2
公开(公告)日：2017-11-28
申请号：US14429934
申请日：2013-09-19
发明人： Keisuke Yoneda , Jun Okabe , Takao Sasaki , Masahiro Kimura , Masahiro Henmi
IPC分类号： B01D69/00 , C02F1/44 , B01D71/56 , B01D61/08 , B01D69/10 , B01D69/12 , B01D67/00 , B01D71/44 , B01D69/14 , B01D71/68 , C02F103/08
CPC分类号： B01D71/56 , B01D61/08 , B01D67/0006 , B01D69/10 , B01D69/12 , B01D69/125 , B01D69/141 , B01D71/44 , B01D71/68 , C02F1/441 , C02F2103/08
摘要： Provided is a composite semipermeable membrane having a high salt removal rate and a high water permeability. The composite semipermeable membrane comprises a substrate, a porous support layer formed on the substrate, and a separation functional layer formed on the porous support layer, the hydrophilic macromolecule concentration on the substrate-side surface of the porous support layer being higher than that on the separation functional layer-side surface.
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