ES8100897A1 - Procedimiento para la fabricacion de membranas de ultrafil- tracion - Google Patents

Procedimiento para la fabricacion de membranas de ultrafil- tracion

Info

Publication number
ES8100897A1
ES8100897A1 ES491125A ES491125A ES8100897A1 ES 8100897 A1 ES8100897 A1 ES 8100897A1 ES 491125 A ES491125 A ES 491125A ES 491125 A ES491125 A ES 491125A ES 8100897 A1 ES8100897 A1 ES 8100897A1
Authority
ES
Spain
Prior art keywords
ultrafilter
processes
linear polyurethane
membrane
water
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES491125A
Other languages
English (en)
Other versions
ES491125A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo NV
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 ES8100897A1 publication Critical patent/ES8100897A1/es
Publication of ES491125A0 publication Critical patent/ES491125A0/es
Granted legal-status Critical Current

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)

Abstract

PROCEDIMIENTO PARA FABRICAR MEMBRANAS DE ULTRAFILTRACION. FABRICADO A BASE DE POLIURETANOS LINEALES CON UNA PERMEABILIDAD HIDRAULICA PARA EL AGUA DE APROXIMADAMENTE 50 A 500 L./M. CUADRADOS H. MEDIDA EN UNA MEMBRANA CON UN ESPESOR DE APROXIMADAMENTE 0,020 MM. A UNA DIFERENCIA DE PRESIONES DE 1 BAR Y A UNA TEMPERATURA DE 20GC, CON FACTOR DE SEPARACION ALFA, DETERMINADO CON UNA EMULSION DE ACEITE/AGUA AL 2 POR 100 A 25GC DE APROXIMADAMENTE 2 X 10 ELEVADO A -3 - 1 X 10 ELEVADO A -4, UTILIZABLE PARA SEPARACION DE OTRAS MEZCLAS Y CARACTERIZADO PORQUE SE HACE REACCIONAR EN SOLUCION POLIETILENGLICOL, CON UN PESO MOLECULAR MEDIO DE 200 A 20.000, EN CANTIDADES DE 20 A 80 POR 100 EN PESO, REFERIDO A LAS SUSTANCIAS REACCIONANTES, CON DIFENILMENTADIISOCIANATO, EMPLEADO JUNTO A ETILENGLICOL COMO PROLONGADOR DE CADENA, PARA FORMAR UN POLIURETANO, HARA UNA VISCOSIDAD DE 0,5 A 50 PA.S, REFERIDA A UNA CONCENTRACION DE POLIURETANO DE 15 POR 100, SE DETIENE EL CRECIMIENTO DE CADENAS POR ADICION DE UN INHIBIDOR, Y EVENTUALMENTE SE AÑADE UN AGENTE ESTABILIZADOR, OBTENIENDO UNA MEZCLA QUE SE CONFORMA, PRECIPITA Y LAVA, PASANDO A UN SECADO DE LA MEMBRANA.
ES491125A 1979-05-04 1980-05-02 Procedimiento para la fabricacion de membranas de ultrafil- tracion Granted ES491125A0 (es)

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 (2)

Publication Number Publication Date
ES8100897A1 true ES8100897A1 (es) 1980-12-01
ES491125A0 ES491125A0 (es) 1980-12-01

Family

ID=6069940

Family Applications (1)

Application Number Title Priority Date Filing Date
ES491125A Granted ES491125A0 (es) 1979-05-04 1980-05-02 Procedimiento para la fabricacion de membranas de ultrafil- tracion

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) ES491125A0 (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
CA1320139C (en) * 1985-12-06 1993-07-13 Douglas Lyons Ford 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
JP3857306B2 (ja) * 1992-04-24 2006-12-13 ザ ポリマー テクノロジー グループ，インコーポレイティド 所定分子量レンジの分子を透過させるためのコポリマー及びそれらの非細孔性，半透過性膜並びにその使用
FR2692164B1 (fr) * 1992-06-16 1994-11-10 Elf Antar France Procédé d'ultrafiltration d'émulsions stabilisées.
DK0590769T3 (da) * 1992-09-30 1999-01-18 Baker Hughes Inc Fremgangsmåde til fjernelse af vandopløselige organiske materialer fra olieprocesvand
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
DE2460835C2 (de) * 1974-12-21 1982-11-18 Chemie-Anlagenbau Bischofsheim GmbH, 4500 Osnabrück Verfahren zur Herstellung von Filtermaterial
US4148734A (en) * 1974-12-21 1979-04-10 Chemie-Anlagenbau Bischofsheim Gmbh Filter material and process for producing same
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
JPS55149613A (en) 1980-11-21
DE2918027A1 (de) 1980-11-13
FR2455475A1 (fr) 1980-11-28
BE883083A (fr) 1980-09-01
NL8002466A (nl) 1980-11-06
LU82412A1 (de) 1980-07-31
ZA802479B (en) 1981-04-29
AU5777680A (en) 1980-11-06
US4332686A (en) 1982-06-01
IT1147053B (it) 1986-11-19
AU538518B2 (en) 1984-08-16
ATA222380A (de) 1985-05-15
DE2918027C2 (de) 1986-05-28
IT8048528A0 (it) 1980-04-28
GB2049544A (en) 1980-12-31
AT379317B (de) 1985-12-27
CA1150457A (en) 1983-07-26
CH645816A5 (de) 1984-10-31
MX154033A (es) 1987-04-08
GB2049544B (en) 1982-11-24
JPS5857203B2 (ja) 1983-12-19
ES491125A0 (es) 1980-12-01
FR2455475B1 (es) 1984-04-13

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