ES379431A1 - Procedimiento para fabricar membranas semipermeables de al-ta resistencia. - Google Patents

Procedimiento para fabricar membranas semipermeables de al-ta resistencia.

Info

Publication number
ES379431A1
ES379431A1 ES379431A ES379431A ES379431A1 ES 379431 A1 ES379431 A1 ES 379431A1 ES 379431 A ES379431 A ES 379431A ES 379431 A ES379431 A ES 379431A ES 379431 A1 ES379431 A1 ES 379431A1
Authority
ES
Spain
Prior art keywords
semipermeable membranes
high pressure
cellulose acetate
preparing high
acetate semipermeable
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
ES379431A
Other languages
English (en)
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES379431A1 publication Critical patent/ES379431A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • 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
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • 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
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • 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
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/22—Cellulose ethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/16—Swelling agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
ES379431A 1969-05-22 1970-05-08 Procedimiento para fabricar membranas semipermeables de al-ta resistencia. Expired ES379431A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82701469A 1969-05-22 1969-05-22

Publications (1)

Publication Number Publication Date
ES379431A1 true ES379431A1 (es) 1972-10-16

Family

ID=25248104

Family Applications (1)

Application Number Title Priority Date Filing Date
ES379431A Expired ES379431A1 (es) 1969-05-22 1970-05-08 Procedimiento para fabricar membranas semipermeables de al-ta resistencia.

Country Status (3)

Country Link
US (1) US3646179A (es)
ES (1) ES379431A1 (es)
IL (1) IL34247A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100014981A1 (it) 2021-06-09 2022-12-09 Futec Service S R L Telaio reversibile per porta a filo muro

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772072A (en) * 1971-06-14 1973-11-13 Eastman Kodak Co Method for treating reverse osmosis membranes
US4077407A (en) * 1975-11-24 1978-03-07 Alza Corporation Osmotic devices having composite walls
US4145295A (en) * 1977-08-15 1979-03-20 Canadian Patents And Development Limited Cellulose ester ultra-filtration membranes and their manufacture
JP2528169B2 (ja) * 1987-11-19 1996-08-28 帝人株式会社 多孔性成型物の製造方法
US5011637A (en) * 1989-01-23 1991-04-30 The Dow Chemical Company Preparing cellulose ester membranes for gas separation
US4980063A (en) * 1989-01-27 1990-12-25 The Dow Chemical Company Compositions useful for preparing cellulose ester membranes for liquid separations
US20240238732A1 (en) * 2022-11-24 2024-07-18 Petróleo Brasileiro D.A.-Petrobras Processes for preparing asymmetric hollow fiber membranes, asymmetric hollow fiber membranes and use of asymmetric hollow fiber membranes
CN117000045B (zh) * 2023-06-01 2024-02-20 贵州省材料产业技术研究院 一种用于去除重金属的疏松纳滤膜及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100014981A1 (it) 2021-06-09 2022-12-09 Futec Service S R L Telaio reversibile per porta a filo muro

Also Published As

Publication number Publication date
US3646179A (en) 1972-02-29
IL34247A0 (en) 1970-06-17
IL34247A (en) 1973-05-31

Similar Documents

Publication Publication Date Title
ES340033A1 (es) Un metodo para separar agua de una solucion acuosa.
ES315961A1 (es) Procedimiento y aparato de filtrado.
ES335628A1 (es) Un procedimiento para preparar una membrana de acetato de celulosa.
GB1331715A (en) Method of lining feed bores of an open-pore support module with reverse-osmosis membranes
NL7413627A (nl) Werkwijze ter bereiding van een fermenteerbare, tot een poeder gedroogde stroop en (alpha)-cellulose uit xerofytische planten.
ES336141A1 (es) Procedimiento para la produccion de peliculas basadas en alcohol de polivinilo.
ES388917A1 (es) Procedimiento para la produccion de microgranulado solido, esferico, de libre fluencia.
IL34247A0 (en) High pressure cellulose acetate semipermeable membranes
CA977505A (en) Process for producing cellulose pulp
CA974718A (en) Process for preparing a dry semi-permeable cellulose acetate membrane
ES422663A1 (es) Procedimiento para formar peliculas de microcapsulas de ba-ja porosidad.
CA924468A (en) Process for preparing cellulose ester reverse osmosis membranes on flexible webs having enhanced releasability
GB1276152A (en) Cellulosic semi-permeable membrane
ES364490A1 (es) Procedimiento para la preparacion de indicadores
NL7412847A (nl) Werkwijze ter bereiding van polyfenyleenethers erhoogde druk.
ES379288A1 (es) Un metodo de fabricacion de una membrana semipermeable.
FR1385394A (fr) Procédé de fabrication de pellicules de cellulose régénérée, utilisées, par exemple, dans les appareils du typë rein artificiel
AT304090B (de) Verfahren zur direkten Herstellung eines homogenen, sehr reinen Mischpulvers
AU445371B2 (en) Process for preparing a low density, porous, thermoset resin
CA900680A (en) Process for preparing high pressure cellulose acetate semipermeable membranes
ES413699A1 (es) Procedimiento de fabricacion de elementos tubulares para laultrafiltracion.
ES417572A1 (es) Procedimiento para la obtencion del 2-(iodoetil)-1,3-dioxo-lano-4-metanol.
ES382363A1 (es) Procedimiento de formacion de membranas.
ES227441A3 (es) PERFECCIONAMIENTOS EN LA FABRICACIoN DE MEMBRANAS FILTRANTES
ES384063A1 (es) Procedimiento para la preparacion de soluciones acuosas es-tables de cardenolidas sensibles a la oxidacion.