ZA802479B - Ultrafiltration membranes comprising linear polyurethanes - Google Patents

Ultrafiltration membranes comprising linear polyurethanes

Info

Publication number
ZA802479B
ZA802479B ZA00802479A ZA802479A ZA802479B ZA 802479 B ZA802479 B ZA 802479B ZA 00802479 A ZA00802479 A ZA 00802479A ZA 802479 A ZA802479 A ZA 802479A ZA 802479 B ZA802479 B ZA 802479B
Authority
ZA
South Africa
Prior art keywords
ultrafiltration membranes
linear polyurethanes
polyurethanes
linear
ultrafiltration
Prior art date
Application number
ZA00802479A
Other languages
English (en)
Inventor
E Hohm
J Behnke
K Gerlach
W Roesener
Original Assignee
Akzo Nv
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 Akzo Nv filed Critical Akzo Nv
Publication of ZA802479B publication Critical patent/ZA802479B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/085—Thickening liquid suspensions by filtration with membranes
    • 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
    • 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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • 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
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • 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
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
ZA00802479A 1979-05-04 1980-04-24 Ultrafiltration membranes comprising linear polyurethanes ZA802479B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2918027A DE2918027C2 (de) 1979-05-04 1979-05-04 Ultrafiltrationsmembranen aus linearen Polyurethanen

Publications (1)

Publication Number Publication Date
ZA802479B true ZA802479B (en) 1981-04-29

Family

ID=6069940

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00802479A ZA802479B (en) 1979-05-04 1980-04-24 Ultrafiltration membranes comprising linear polyurethanes

Country Status (16)

Country Link
US (1) US4332686A (es)
JP (1) JPS5857203B2 (es)
AT (1) AT379317B (es)
AU (1) AU538518B2 (es)
BE (1) BE883083A (es)
CA (1) CA1150457A (es)
CH (1) CH645816A5 (es)
DE (1) DE2918027C2 (es)
ES (1) ES8100897A1 (es)
FR (1) FR2455475A1 (es)
GB (1) GB2049544B (es)
IT (1) IT1147053B (es)
LU (1) LU82412A1 (es)
MX (1) MX154033A (es)
NL (1) NL8002466A (es)
ZA (1) ZA802479B (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087909B (en) * 1980-11-22 1984-11-07 Shirley Inst Breathable non-porous polyurethane film
JPS583604A (ja) * 1981-06-25 1983-01-10 イ−・アイ・デユポン・デ・ニモアス・アンド・カンパニ− 選択透過膜及びその製造方法
DE3127464C2 (de) * 1981-07-11 1986-10-30 Akzo Gmbh, 5600 Wuppertal Linear segmentierte Polyurethane und Verfahren zu deren Herstellung
JPS60225622A (ja) * 1984-04-23 1985-11-09 Agency Of Ind Science & Technol 炭酸ガス選択透過膜
DE3478088D1 (en) * 1984-10-15 1989-06-15 Shell Int Research Process for producing dense membranes
US4787976A (en) * 1985-04-29 1988-11-29 W. R. Grace & Co. Non-adsorptive, semipermeable filtration membrane
AU582936B2 (en) * 1985-12-06 1989-04-13 Memtec Limited Treatment of emulsions
US4780211A (en) * 1986-11-07 1988-10-25 Desalination Systems, Inc. Method of dewatering using PTFE membrane
US4797214A (en) * 1987-07-07 1989-01-10 Vincent Saputo Method of treatment of waste streams of oil/water emulsions or solutions
DE3824359A1 (de) * 1988-04-07 1989-10-19 Bayer Ag Verbundmembranen, verfahren zu ihrer herstellung und ihre verwendung
DE3916210A1 (de) * 1989-05-18 1990-12-06 Bayer Ag Verbundmembranen, verfahren zu ihrer herstellung und ihre verwendung
US4946939A (en) * 1989-05-30 1990-08-07 The Dow Chemical Company High purity polyether polyols
US5047495A (en) * 1989-08-28 1991-09-10 The G. F. Goodrich Company Polyurethane for flexible fuel containers
US5574104A (en) * 1990-01-05 1996-11-12 The B. F. Goodrich Company Chain extended low molecular weight polyoxiranes and electrostatic dissipating blend compositions based thereon
US5207917A (en) * 1991-10-08 1993-05-04 Weaver Thomas J M Recycling and recovery of aqueous cleaner solutions
DE69320470T2 (de) * 1992-04-24 1999-04-29 Polymer Technology Group Inc Copolymere, sowie daraus hergestellte nichtporöse halbdurchlässige membranen und ihre verwendung zum filtern von molekülen in einem vorgegebenen molekulargewichtbereich
FR2692164B1 (fr) * 1992-06-16 1994-11-10 Elf Antar France Procédé d'ultrafiltration d'émulsions stabilisées.
EP0590769B1 (en) * 1992-09-30 1998-04-29 Baker Hughes Incorporated Method for removal of water soluble organics from oil process water
US5269934A (en) * 1992-10-06 1993-12-14 Chevron Research And Technology Company Removal of oily residues from aqueous waste streams
AUPO251096A0 (en) 1996-09-23 1996-10-17 Cardiac Crc Nominees Pty Limited Polysiloxane-containing polyurethane elastomeric compositions
US6294093B1 (en) * 1998-09-04 2001-09-25 Nalco/Exxon Energy Chemicals, L.P. Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE673744A (es) * 1964-12-14
FR1551885A (es) * 1967-06-30 1969-01-03
US3615024A (en) * 1968-08-26 1971-10-26 Amicon Corp High flow membrane
DE2165073A1 (de) * 1971-12-28 1973-07-12 Sartorius Membranfilter Gmbh Mehrschichten-filtermembrane, verfahren zu deren herstellung und deren verwendung
US3822238A (en) * 1972-08-02 1974-07-02 Princeton Polymer Lab Hydrophilic polyurethane polymers
US3776970A (en) * 1972-12-14 1973-12-04 Monsanto Co Process for the separation of styrene from ethylbenzene
DE2409789C3 (de) * 1974-03-01 1981-08-20 Akzo Gmbh, 5600 Wuppertal Verfahren zur Herstellung von Polyurethanlösungen sowie deren Anwendung
FR2288477A1 (fr) * 1974-10-22 1976-05-21 Manche Union Coop Agr Laiti Procede de production d'acide sialique et de glycoproteines a partir de lactoserum de fromagerie
US4148734A (en) * 1974-12-21 1979-04-10 Chemie-Anlagenbau Bischofsheim Gmbh Filter material and process for producing same
DE2460835C2 (de) * 1974-12-21 1982-11-18 Chemie-Anlagenbau Bischofsheim GmbH, 4500 Osnabrück Verfahren zur Herstellung von Filtermaterial
DE2627629C3 (de) * 1976-06-19 1979-12-20 Bayer Ag, 5090 Leverkusen Verfahren zur Abtrennung von aromatischen* Kohlenwasserstoffen aus Gemischen mit anderen organischen Verbindungen mit Hilfe von Kunststoffmembranen

Also Published As

Publication number Publication date
IT1147053B (it) 1986-11-19
FR2455475B1 (es) 1984-04-13
MX154033A (es) 1987-04-08
ES491125A0 (es) 1980-12-01
BE883083A (fr) 1980-09-01
GB2049544A (en) 1980-12-31
AT379317B (de) 1985-12-27
AU5777680A (en) 1980-11-06
DE2918027A1 (de) 1980-11-13
LU82412A1 (de) 1980-07-31
CA1150457A (en) 1983-07-26
AU538518B2 (en) 1984-08-16
DE2918027C2 (de) 1986-05-28
ATA222380A (de) 1985-05-15
JPS5857203B2 (ja) 1983-12-19
FR2455475A1 (fr) 1980-11-28
NL8002466A (nl) 1980-11-06
GB2049544B (en) 1982-11-24
US4332686A (en) 1982-06-01
ES8100897A1 (es) 1980-12-01
CH645816A5 (de) 1984-10-31
JPS55149613A (en) 1980-11-21
IT8048528A0 (it) 1980-04-28

Similar Documents

Publication Publication Date Title
GB2049544B (en) Ultrafiltration membranes comprising linear polyurethanes
GB2070974B (en) Supported semipermeable membrane
US4629563B1 (en) Asymmetric membranes
ZA801003B (en) Interfacially synthesized reverse osmosis membrane
GB2051664B (en) Preparing selective permeable membranes
JPS55136865A (en) Linear motor
IL65197A0 (en) Polyacrylonitrile-containing semipermeable membranes,their manufacture and their use
JPS57159506A (en) Ultrafiltration membrane and its manufacture
JPS5594576A (en) Miniature linear motor
DE3167434D1 (en) Semipermeable membranes
ZA818207B (en) Permselective membranes
GB2047162B (en) Anisotropic membranes
DE3275815D1 (en) Semi-permeable membranes
JPS5339980A (en) Polyamide semipermeable membrane
DE3063901D1 (en) Improved ultrafiltration and reverse osmosis device
GB2047979B (en) Linear motor
JPS5375175A (en) Semipermeable membrane and manufacture thereof
GB2052886B (en) Linear motor
DE3065538D1 (en) Permselective membrane
GB2055069B (en) Shaving units
IE45467L (en) Semipermeable membranes
DE3274953D1 (en) Permselective membrane
GB2064367B (en) Semi-permeable composite membrane
JPS53122683A (en) Semipermeable membrane and manufacture thereof
GB2061749B (en) Membrane filter assembly