ZA886244B - Water softening membranes - Google Patents

Water softening membranes

Info

Publication number
ZA886244B
ZA886244B ZA886244A ZA886244A ZA886244B ZA 886244 B ZA886244 B ZA 886244B ZA 886244 A ZA886244 A ZA 886244A ZA 886244 A ZA886244 A ZA 886244A ZA 886244 B ZA886244 B ZA 886244B
Authority
ZA
South Africa
Prior art keywords
water softening
membranes
softening membranes
water
softening
Prior art date
Application number
ZA886244A
Other languages
English (en)
Inventor
John E Cadotte
E Cadotte John
David R Walker
R Walker David
Original Assignee
Filmtec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filmtec Corp filed Critical Filmtec Corp
Priority to ZA886244A priority Critical patent/ZA886244B/xx
Publication of ZA886244B publication Critical patent/ZA886244B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00933—Chemical modification by addition of a layer chemically bonded to the membrane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/56—Polyamides, e.g. polyester-amides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/30—Cross-linking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31536—Including interfacial reaction product of adjacent layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/3175—Next to addition polymer from unsaturated monomer[s]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
ZA886244A 1986-04-28 1988-08-23 Water softening membranes ZA886244B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA886244A ZA886244B (en) 1986-04-28 1988-08-23 Water softening membranes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/856,519 US4765897A (en) 1986-04-28 1986-04-28 Polyamide membranes useful for water softening
ZA886244A ZA886244B (en) 1986-04-28 1988-08-23 Water softening membranes

Publications (1)

Publication Number Publication Date
ZA886244B true ZA886244B (en) 1990-04-25

Family

ID=25323831

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA886244A ZA886244B (en) 1986-04-28 1988-08-23 Water softening membranes

Country Status (8)

Country Link
US (1) US4765897A (xx)
EP (1) EP0355188B1 (xx)
CN (1) CN1040745A (xx)
AU (1) AU609178B2 (xx)
CA (1) CA1317713C (xx)
ES (1) ES2059456T3 (xx)
WO (1) WO1990001980A1 (xx)
ZA (1) ZA886244B (xx)

Families Citing this family (72)

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JPH07178327A (ja) * 1993-11-12 1995-07-18 Nitto Denko Corp 複合半透膜及びその製造方法
US5755964A (en) * 1996-02-02 1998-05-26 The Dow Chemical Company Method of treating polyamide membranes to increase flux
JP3681214B2 (ja) * 1996-03-21 2005-08-10 日東電工株式会社 高透過性複合逆浸透膜
US6280853B1 (en) 1999-06-10 2001-08-28 The Dow Chemical Company Composite membrane with polyalkylene oxide modified polyamide surface
US6337018B1 (en) * 2000-04-17 2002-01-08 The Dow Chemical Company Composite membrane and method for making the same
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US7001518B1 (en) * 2000-11-28 2006-02-21 Hydranautics Low pressure reverse osmosis and nanofiltration membranes and method for the production thereof
US20030015470A1 (en) * 2001-07-20 2003-01-23 Muralidhara Harapanahalli S. Nanofiltration water-softening apparatus and method
JP2003080042A (ja) * 2001-09-10 2003-03-18 Nitto Denko Corp 複合半透膜及びその製造方法
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CN100411719C (zh) * 2003-03-03 2008-08-20 通用电气公司 半渗透膜的制备方法
US7051883B2 (en) * 2003-07-07 2006-05-30 Reemay, Inc. Wetlaid-spunbond laminate membrane support
US20050056589A1 (en) * 2003-09-16 2005-03-17 General Electric Company Treatment of semi-permeable filtration membranes
DE102004008219B3 (de) * 2004-02-19 2005-10-27 Membrana Gmbh Integral asymmetrische Membran, Verfahren zu ihrer Herstellung und ihre Verwendung
NL1030288C2 (nl) * 2004-10-29 2006-10-09 Toray Industries Semipermeabel composietmembraan, productiewerkwijze daarvan, en element, fluïdumscheidingsinstallatie en werkwijze voor behandeling van water onder toepassing van hetzelfde.
AU2012200036B2 (en) * 2005-03-09 2014-02-13 The Regents Of The University Of California Nanocomposite membranes and methods of making and using same
BRPI0608363A2 (pt) * 2005-03-09 2011-05-31 Univ California membranas nanocompósitas e métodos de fabricação e utilização das mesmas
RU2008104828A (ru) * 2005-07-12 2009-08-20 Каргилл, Инкорпорейтед (US) Способ умягчения воды (варианты)
KR100821486B1 (ko) * 2005-08-08 2008-04-10 주식회사 코오롱 나노 복합중공사막 및 그의 제조방법
US7909179B2 (en) * 2005-08-16 2011-03-22 Ge Osmonics, Inc. Modified polyamide matrices and methods for their preparation
US7575687B2 (en) 2005-08-16 2009-08-18 Ge Osmonics, Inc. Membranes and methods useful for caustic applications
US20070251883A1 (en) * 2006-04-28 2007-11-01 Niu Q Jason Reverse Osmosis Membrane with Branched Poly(Alkylene Oxide) Modified Antifouling Surface
KR101360751B1 (ko) * 2006-05-12 2014-02-07 다우 글로벌 테크놀로지스 엘엘씨 개질된 막
CN100478056C (zh) * 2006-08-25 2009-04-15 贵阳时代汇通膜科技有限公司 耐氧化复合反渗透膜
EP2188044A4 (en) * 2006-10-27 2012-10-24 Univ California MICRO AND NANOVERBUND SUPPORT STRUCTURE FOR THIN FILM REVERSE OSMOSEMBRBRANES
US7905361B2 (en) 2007-02-05 2011-03-15 Dow Global Technologies Llc Modified polyamide membrane
US20100224555A1 (en) * 2007-09-21 2010-09-09 Hoek Eric M V Nanocomposite membranes and methods of making and using same
US8177978B2 (en) 2008-04-15 2012-05-15 Nanoh20, Inc. Reverse osmosis membranes
US8567612B2 (en) 2008-04-15 2013-10-29 Nanoh2O, Inc. Hybrid TFC RO membranes with nitrogen additives
US8216473B2 (en) 2008-06-13 2012-07-10 Solution Dynamics, Llc Apparatus and methods for solution processing using reverse osmosis
US7815987B2 (en) * 2008-12-04 2010-10-19 Dow Global Technologies Inc. Polyamide membrane with coating of polyalkylene oxide and polyacrylamide compounds
TWI398353B (zh) * 2009-03-02 2013-06-11 Ind Tech Res Inst 奈米纖維材料與脫鹽過濾材料
US8580341B2 (en) * 2009-05-22 2013-11-12 General Electric Company Method of making composite membrane
EP2490794A1 (en) 2009-10-19 2012-08-29 Dow Global Technologies LLC Method of testing the integrity of spiral wound modules
US8142588B2 (en) * 2009-10-27 2012-03-27 Dow Global Technologies Llc Method for applying tape layer to outer periphery of spiral wound module
CN102711964B (zh) * 2010-01-12 2014-10-22 陶氏环球技术有限责任公司 通过热成像测试螺旋卷组件的方法
CN102791365B (zh) * 2010-03-10 2014-12-24 陶氏环球技术有限责任公司 具有包含聚环氧烷和苯乙酮化合物的涂层的聚酰胺膜
US8661648B2 (en) * 2010-03-24 2014-03-04 Dow Global Technologies Llc Spiral wound filtration module
WO2011136865A1 (en) 2010-04-26 2011-11-03 Dow Global Technologies Llc Polyamide membrane with a coating comprising polyalkylene oxide and triazine compounds
WO2011149571A1 (en) 2010-05-24 2011-12-01 Dow Global Technologies Llc Polyamide membrane with coating comprising polyalkylene oxide and biguanide compounds
US8757396B2 (en) 2010-05-24 2014-06-24 Dow Global Technologies Llc Composite membrane with coating comprising polyalkylene oxide and oxy-substituted phenyl compounds
CN102917775B (zh) 2010-05-24 2015-11-25 陶氏环球技术有限责任公司 具有包含聚环氧烷和咪唑化合物的涂层的聚酰胺膜
GB201012083D0 (en) 2010-07-19 2010-09-01 Imp Innovations Ltd Thin film composite membranes for separation
US9216385B2 (en) * 2010-10-04 2015-12-22 Saudi Arabian Oil Company Application of rejection enhancing agents (REAs) that do not have cloud point limitations on desalination membranes
JP5968328B2 (ja) 2010-11-10 2016-08-10 ナノエイチツーオー・インコーポレーテッド 非金属添加剤を含む改良された混成ｔｆｃｒｏ膜
US20120152839A1 (en) * 2010-12-20 2012-06-21 David Allen Olson Modified sulfonamide polymeric matrices
US8778182B2 (en) 2011-07-28 2014-07-15 Dow Global Technologies Llc Spiral wound element and seal assembly
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GB201117950D0 (en) 2011-10-18 2011-11-30 Imp Innovations Ltd Membranes for separation
US20130146530A1 (en) * 2011-12-08 2013-06-13 General Electric Company Membrane, water treatment system, and method of making
JP5969019B2 (ja) * 2012-05-24 2016-08-10 エルジー・ケム・リミテッド 逆浸透分離膜
JP6029156B2 (ja) * 2012-11-21 2016-11-24 エルジー・ケム・リミテッド 耐塩素性に優れた高流量水処理分離膜
US9211507B2 (en) 2012-11-21 2015-12-15 Lg Chem, Ltd. Water-treatment separating membrane of high flux having good chlorine resistance and method of manufacturing the same
JP6251953B2 (ja) 2012-12-28 2017-12-27 栗田工業株式会社 逆浸透膜の阻止率向上方法
WO2016007345A1 (en) 2014-07-07 2016-01-14 E. I. Du Pont De Nemours And Company Composite filtration membranes comprising a casted membrane on a nanofiber sheet
CN105435656B (zh) 2014-07-22 2017-10-03 中国石油化工股份有限公司 一种复合纳滤膜及其制备方法
EP3328522A4 (en) 2015-07-29 2019-04-24 Gradiant Corporation OSMOTIC DESALINATION METHODS AND ASSOCIATED SYSTEMS
US9861940B2 (en) 2015-08-31 2018-01-09 Lg Baboh2O, Inc. Additives for salt rejection enhancement of a membrane
US9737859B2 (en) 2016-01-11 2017-08-22 Lg Nanoh2O, Inc. Process for improved water flux through a TFC membrane
US10155203B2 (en) 2016-03-03 2018-12-18 Lg Nanoh2O, Inc. Methods of enhancing water flux of a TFC membrane using oxidizing and reducing agents
CN106512729B (zh) * 2016-11-21 2019-02-19 杭州易膜环保科技有限公司 一种高脱盐率反渗透复合膜及其制备方法
US20200376442A1 (en) 2017-12-21 2020-12-03 Nitto Denko Corporation Graphene oxide membrane protective coating
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US11534719B1 (en) * 2021-07-02 2022-12-27 Gradiant Corporation Membranes with controlled porosity for serial filtration

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US3551331A (en) * 1969-09-22 1970-12-29 Du Pont Reverse osmosis separations using a treated polyamide membrane
US3886066A (en) * 1972-11-06 1975-05-27 Du Pont Tannin treatment for non-porous semipermeable membranes
US3853755A (en) * 1972-11-06 1974-12-10 Du Pont Osmosis efficiency from tannin treatment of non-porous semipermeable membranes having hydrous heavy metal coatings
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US4765897A (en) * 1986-04-28 1988-08-23 The Dow Chemical Company Polyamide membranes useful for water softening
US4814082A (en) * 1986-10-20 1989-03-21 Memtec North America Corporation Ultrafiltration thin film membranes
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Also Published As

Publication number Publication date
WO1990001980A1 (en) 1990-03-08
ES2059456T3 (es) 1994-11-16
AU2143788A (en) 1990-03-01
US4765897A (en) 1988-08-23
EP0355188A1 (en) 1990-02-28
AU609178B2 (en) 1991-04-26
CA1317713C (en) 1993-05-18
CN1040745A (zh) 1990-03-28
EP0355188B1 (en) 1994-09-14

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