ZA916032B - Multilayer reverse osmosis membrane of polyamide-urea - Google Patents

Multilayer reverse osmosis membrane of polyamide-urea

Info

Publication number
ZA916032B
ZA916032B ZA916032A ZA916032A ZA916032B ZA 916032 B ZA916032 B ZA 916032B ZA 916032 A ZA916032 A ZA 916032A ZA 916032 A ZA916032 A ZA 916032A ZA 916032 B ZA916032 B ZA 916032B
Authority
ZA
South Africa
Prior art keywords
urea
polyamide
reverse osmosis
osmosis membrane
multilayer reverse
Prior art date
Application number
ZA916032A
Other languages
English (en)
Inventor
Samuel David Arthur
David Arthur Samuel
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of ZA916032B publication Critical patent/ZA916032B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • 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
    • B01D71/54—Polyureas; Polyurethanes
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3237—Polyamines aromatic
    • C08G18/324—Polyamines aromatic containing only one aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3246—Polyamines heterocyclic, the heteroatom being oxygen or nitrogen in the form of an amino group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/71—Monoisocyanates or monoisothiocyanates
    • C08G18/712—Monoisocyanates or monoisothiocyanates containing halogens
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/773—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur halogens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
ZA916032A 1990-07-31 1991-07-31 Multilayer reverse osmosis membrane of polyamide-urea ZA916032B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/560,512 US5019264A (en) 1990-07-31 1990-07-31 Multilayer reverse osmosis membrane of polyamide-urea

Publications (1)

Publication Number Publication Date
ZA916032B true ZA916032B (en) 1993-04-28

Family

ID=24238109

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA916032A ZA916032B (en) 1990-07-31 1991-07-31 Multilayer reverse osmosis membrane of polyamide-urea

Country Status (9)

Country Link
US (1) US5019264A (xx)
EP (2) EP0612722A3 (xx)
JP (2) JPH0722688B2 (xx)
AU (1) AU635479B2 (xx)
CA (1) CA2047989C (xx)
DE (1) DE69110795T2 (xx)
IL (1) IL99010A (xx)
PT (1) PT98506A (xx)
ZA (1) ZA916032B (xx)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5019264A (en) * 1990-07-31 1991-05-28 E. I. Du Pont De Nemours And Company Multilayer reverse osmosis membrane of polyamide-urea
US5246587A (en) * 1991-12-23 1993-09-21 Hydranautics Interfacially synthesized reverse osmosis membranes and processes for preparing the same
JPH07178327A (ja) * 1993-11-12 1995-07-18 Nitto Denko Corp 複合半透膜及びその製造方法
US5693227A (en) * 1994-11-17 1997-12-02 Ionics, Incorporated Catalyst mediated method of interfacial polymerization on a microporous support, and polymers, fibers, films and membranes made by such method
US5851355A (en) * 1996-11-27 1998-12-22 Bba Nonwovens Simpsonville, Inc. Reverse osmosis support substrate and method for its manufacture
EP0924184A3 (en) 1997-12-17 1999-06-30 Daicel Chemical Industries, Ltd. A method for treating an effluent containing sorbic acid and/or a salt thereof and an effluent disposal device
KR19990070134A (ko) * 1998-02-17 1999-09-15 한형수 폴리아미드계 복합소재 분리막의 제조방법
EP0992277B1 (en) * 1998-10-09 2004-04-07 Saehan Industries, Inc. Dry semipermeable reverse osmosis membrane and process for preparing the same using saccharides
US6156680A (en) * 1998-12-23 2000-12-05 Bba Nonwovens Simpsonville, Inc. Reverse osmosis support substrate and method for its manufacture
DE19954158A1 (de) * 1999-11-10 2001-05-17 Inst Textil & Faserforschung Mikroporöse hydrophile Membran
US7250226B2 (en) 2001-08-31 2007-07-31 Nippon Hoso Kyokai Phosphorescent compound, a phosphorescent composition and an organic light-emitting device
US20060207930A1 (en) * 2005-03-15 2006-09-21 Yeager Gary W Interfacial composite structure and method of making them
US7727434B2 (en) * 2005-08-16 2010-06-01 General Electric Company Membranes and methods of treating membranes
AU2008270034B2 (en) 2007-06-28 2009-07-16 Arelac, Inc. Desalination methods and systems that include carbonate compound precipitation
US20090242831A1 (en) * 2008-03-27 2009-10-01 General Electric Company Aromatic halosulfonyl isocyanate compositions
US20090242479A1 (en) * 2008-03-27 2009-10-01 General Electric Company Aromatic halosulfonyl isocyanate compositions
US8857629B2 (en) 2010-07-15 2014-10-14 International Business Machines Corporation Composite membrane with multi-layered active layer
KR101920194B1 (ko) 2011-01-24 2019-02-08 다우 글로벌 테크놀로지스 엘엘씨 복합 폴리아미드 막
US9022227B2 (en) 2011-03-21 2015-05-05 International Business Machines Corporation Composite membranes and methods of preparation thereof
WO2013032586A1 (en) 2011-08-31 2013-03-07 Dow Global Technologies Llc Composite polyamide membrane derived from monomer including amine-reactive and phosphorous-containing functional groups
US9029600B2 (en) 2011-09-29 2015-05-12 Dow Global Technologies Llc Method for preparing high purity mono-hydrolyzed acyl halide compound
JP6018222B2 (ja) 2012-01-06 2016-11-02 ダウ グローバル テクノロジーズ エルエルシー 複合ポリアミド膜
US9561474B2 (en) 2012-06-07 2017-02-07 International Business Machines Corporation Composite membrane with multi-layered active layer
US20150157990A1 (en) 2012-07-19 2015-06-11 Dow Global Technologies Llc Composite polyamide membrane with carboxylic acid functionality
CN104918687A (zh) 2013-01-14 2015-09-16 陶氏环球技术有限责任公司 使用非极性溶剂的掺合物经由界面聚合制造复合聚酰胺膜
WO2014109947A1 (en) 2013-01-14 2014-07-17 Dow Global Technologies Llc Composite polyamide membrane comprising substituted benzamide monomer
US9289729B2 (en) 2013-03-16 2016-03-22 Dow Global Technologies Llc Composite polyamide membrane derived from carboxylic acid containing acyl halide monomer
US9051417B2 (en) 2013-03-16 2015-06-09 Dow Global Technologies Llc Method for solubilizing carboxylic acid-containing compound in hydrocarbon solvent
US9051227B2 (en) 2013-03-16 2015-06-09 Dow Global Technologies Llc In-situ method for preparing hydrolyzed acyl halide compound
CN105163837B (zh) 2013-05-03 2017-05-10 陶氏环球技术有限责任公司 衍生自脂肪族非环状叔胺化合物的复合聚酰胺膜
EP3077088B1 (en) 2013-12-02 2017-12-27 Dow Global Technologies LLC Method for forming a composite polyamide membrane post treated with nitrious acid
US9452391B1 (en) 2013-12-02 2016-09-27 Dow Global Technologies Llc Composite polyamide membrane treated with dihyroxyaryl compounds and nitrous acid
EP3092060B1 (en) 2014-01-09 2018-07-25 Dow Global Technologies LLC Composite polyamide membrane having azo content and high acid content
EP3092062B1 (en) 2014-01-09 2018-05-30 Dow Global Technologies LLC Composite polyamide membrane having preferred azo content
CN105873666B (zh) 2014-01-09 2019-11-01 陶氏环球技术有限责任公司 具有高酸含量和低偶氮含量的复合聚酰胺膜
US9776141B2 (en) 2014-04-28 2017-10-03 Dow Global Technologies Llc Composite polyamide membrane post-treated with nitrous acid
US9943810B2 (en) 2014-05-14 2018-04-17 Dow Global Technologies Llc Composite polyamide membrane post-treated with nitrous acid
US11472936B2 (en) 2018-02-21 2022-10-18 Cryovac, Llc Method and formulation for an isocyanate-free foam using isocyanate-free polyurethane chemistry
KR102129672B1 (ko) 2018-09-04 2020-07-02 도레이첨단소재 주식회사 역삼투분리막, 이의 제조방법 및 이를 포함하는 분리막 모듈
WO2020175205A1 (ja) * 2019-02-28 2020-09-03 株式会社クラレ 複合中空糸膜、及び複合中空糸膜の製造方法
KR102267821B1 (ko) 2019-09-17 2021-06-21 도레이첨단소재 주식회사 나노분리막 및 이를 포함하는 분리막 모듈
KR102390219B1 (ko) 2020-08-07 2022-04-22 도레이첨단소재 주식회사 해수전처리용 나노분리막 및 이를 포함하는 분리막 모듈

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752105A (en) * 1953-01-23 1956-07-04 Bayer Ag Isocyanatocarboxylic acid chlorides
DE943407C (de) * 1953-01-24 1956-05-17 Bayer Ag Verfahren zur Herstellung von Isocyanatcarbonsaeurechloriden
US3211776A (en) * 1963-01-22 1965-10-12 Du Pont Catalytic process for preparing aromatic chloroformates
FR1476714A (fr) * 1965-03-03 1967-04-14 Bayer Ag Procédé de préparation de chlorures d'acides isocyanato-carboxyliques
DE1222919B (de) * 1965-03-03 1966-08-18 Bayer Ag Verfahren zur Herstellung von Isocyanatocarbonsaeurechloriden
US3492331A (en) * 1966-12-20 1970-01-27 Upjohn Co 4 - nitro - 2,6 - dichlorophenyl isocyanate and preparation of organic isocyanates
CH572047A5 (xx) * 1973-03-01 1976-01-30 Ciba Geigy Ag
JPS54107882A (en) * 1978-02-13 1979-08-24 Toray Ind Inc Semipermeable membrane
JPS5554004A (en) * 1978-10-18 1980-04-21 Teijin Ltd Selective permeable membrane and its manufacturing
US4277344A (en) * 1979-02-22 1981-07-07 Filmtec Corporation Interfacially synthesized reverse osmosis membrane
US4824916A (en) * 1985-03-15 1989-04-25 The Dow Chemical Company Water-insoluble, crosslinked, sulfonated aromatic polyamide
GB2189168B (en) * 1986-04-21 1989-11-29 Aligena Ag Composite membranes useful in the separation of low molecular weight organic compounds from aqueous solutions containing inorganic salts
DE3641702A1 (de) * 1986-12-06 1988-06-16 Bayer Ag Diisocyanate und diisocyanatgemische, ein verfahren zu ihrer herstellung und ihrer verwendung bei der herstellung von polyurethankunststoffen
JPH0474517A (ja) * 1990-07-16 1992-03-09 Nitto Denko Corp 複合逆浸透膜
US5019264A (en) * 1990-07-31 1991-05-28 E. I. Du Pont De Nemours And Company Multilayer reverse osmosis membrane of polyamide-urea
US5085777A (en) * 1990-08-31 1992-02-04 E. I. Du Pont De Nemours And Company Reverse osmosis membranes of polyamideurethane

Also Published As

Publication number Publication date
CA2047989A1 (en) 1992-02-01
EP0473290B1 (en) 1995-06-28
PT98506A (pt) 1992-06-30
JPH07138222A (ja) 1995-05-30
JPH04281830A (ja) 1992-10-07
EP0612722A3 (en) 1994-09-07
CA2047989C (en) 2004-09-21
IL99010A (en) 1995-12-31
EP0612722A2 (en) 1994-08-31
IL99010A0 (en) 1992-07-15
EP0473290A3 (en) 1992-07-08
EP0473290A2 (en) 1992-03-04
AU635479B2 (en) 1993-03-18
AU8147391A (en) 1992-02-06
DE69110795T2 (de) 1996-02-22
JPH0722688B2 (ja) 1995-03-15
US5019264A (en) 1991-05-28
DE69110795D1 (de) 1995-08-03

Similar Documents

Publication Publication Date Title
EP0473290A3 (en) Multilayer reverse osmosis membrane of polyamide-urea
HK30896A (en) Prevention of biofouling of reverse osmosis membranes
EP0473459A3 (en) Reverse osmosis membranes of polyamideurethane
EP0438372A3 (en) Reverse osmosis system
EP0275027A3 (en) Reverse osmosis membranes
IL100852A0 (en) Manufacture of thin film composite membranes
SG25493G (en) Polyamide reverse osmosis membranes
AU3274693A (en) Composite membrane
PH25392A (en) Purification of polydextrose by reverse osmosis
EP0480039A4 (en) Composite membrane
DE69311494D1 (de) Mikroporöse Verbundmembranen
AU555866B2 (en) Reverse osmosis membrane
EP0556569A3 (en) Composite reverse osmosis membrane and novel acid chloride
IL87126A (en) Reverse osmosis membranes
GB2218011B (en) Composite semipermeable membrane
AU5360090A (en) Treatment for reverse osmosis membranes
DE69118887D1 (de) Semipermeable komposit-membran
GB9201869D0 (en) Membranes
GB8404855D0 (en) Reverse osmosis membrane
GB2238966B (en) Solvent-stable semipermeable composite membranes
GB8724818D0 (en) Reverse osmosis membranes
GB9112760D0 (en) Determination of membrane pore size
AU673322B2 (en) Water filtration
AU678546B3 (en) Water filtration
AU673322C (en) Water filtration