IT1143711B - PERMSELECTIVE MEMBRANES AND PROCESS FOR THEIR PREPARATION - Google Patents

PERMSELECTIVE MEMBRANES AND PROCESS FOR THEIR PREPARATION

Info

Publication number
IT1143711B
IT1143711B IT28830/77A IT2883077A IT1143711B IT 1143711 B IT1143711 B IT 1143711B IT 28830/77 A IT28830/77 A IT 28830/77A IT 2883077 A IT2883077 A IT 2883077A IT 1143711 B IT1143711 B IT 1143711B
Authority
IT
Italy
Prior art keywords
preparation
permselective membranes
permselective
membranes
Prior art date
Application number
IT28830/77A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1143711B publication Critical patent/IT1143711B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/02—Polyamines
    • 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
    • B01D67/00111—Polymer pretreatment in the casting solutions
    • 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
    • B01D67/0083—Thermal after-treatment
    • 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
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/38—Hydrophobic membranes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
IT28830/77A 1976-10-21 1977-10-20 PERMSELECTIVE MEMBRANES AND PROCESS FOR THEIR PREPARATION IT1143711B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73463176A 1976-10-21 1976-10-21

Publications (1)

Publication Number Publication Date
IT1143711B true IT1143711B (en) 1986-10-22

Family

ID=24952479

Family Applications (1)

Application Number Title Priority Date Filing Date
IT28830/77A IT1143711B (en) 1976-10-21 1977-10-20 PERMSELECTIVE MEMBRANES AND PROCESS FOR THEIR PREPARATION

Country Status (7)

Country Link
JP (1) JPS5351184A (en)
CA (1) CA1107424A (en)
DE (1) DE2747408A1 (en)
FR (1) FR2368289A1 (en)
GB (1) GB1561200A (en)
IT (1) IT1143711B (en)
NL (1) NL7711594A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028213C2 (en) * 1980-07-25 1990-12-06 Akzo Gmbh, 5600 Wuppertal Process for the production of an ultrafiltration membrane made of polyamide and a membrane produced therefrom
GB8320797D0 (en) * 1983-08-02 1983-09-01 Shell Int Research Very thin dense membrane
AU4787685A (en) * 1984-09-27 1986-04-10 E.I. Du Pont De Nemours And Company Aromatic polyamide membrane for reverse osmosis
NL9000329A (en) * 1990-02-12 1991-09-02 Stork Friesland Bv HYDROFILE MEMBRANE, METHOD FOR MANUFACTURING A HYDROFILE MEMBRANE.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567632A (en) * 1968-09-04 1971-03-02 Du Pont Permselective,aromatic,nitrogen-containing polymeric membranes
US3660281A (en) * 1970-05-06 1972-05-02 Du Pont Permeation separation membranes
US3775361A (en) * 1971-10-21 1973-11-27 Du Pont Preparation of stable concentrated solutions of aromatic nitrogen-linked condensation polymers
US3954607A (en) * 1972-05-01 1976-05-04 E. I. Du Pont De Nemours And Company Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith
US3853754A (en) * 1972-07-20 1974-12-10 Du Pont Membrane separation of homogeneous catalysts from nitrile solutions
US3816303A (en) * 1972-12-20 1974-06-11 Us Interior Poly(n-amido)imides as semipermeable membranes
JPS568645B2 (en) * 1974-09-05 1981-02-25
US4159251A (en) * 1976-09-29 1979-06-26 Pharmaco, Inc. Ultrafiltration membranes based on heteroaromatic polymers

Also Published As

Publication number Publication date
FR2368289B1 (en) 1984-06-08
FR2368289A1 (en) 1978-05-19
NL7711594A (en) 1978-04-25
JPS5351184A (en) 1978-05-10
GB1561200A (en) 1980-02-13
CA1107424A (en) 1981-08-18
JPS6127085B2 (en) 1986-06-24
DE2747408C2 (en) 1987-06-25
DE2747408A1 (en) 1978-04-27

Similar Documents

Publication Publication Date Title
IT1079471B (en) PROCEDURE FOR THE PREPARATION OF SEMI-PERMEABLE MEMBRANES AND PRODUCT OBTAINED
IT1067339B (en) SEMI-PERMEABLE COMPOSITE MEMBRANES
BR7705193A (en) PROCESS FOR THE PREPARATION OF ASYMMETRIC MEMBRANES
BR7705790A (en) MICROPOROUS POLYMER STRUCTURE, AND PROCESS FOR ITS PREPARATION
IT1062302B (en) PROCEDURE FOR THE PRODUCTION OF SEMI-PERMEABLE MEMBRANES
DD133298A5 (en) MULTICOMPONENT MEMBRANES FOR SEPARATING GASES
BR8005980A (en) MEMBRANE CONTAINING MODIFIED, POROUS POLACRYLONITRILL, PROCESS TO PREPARE IT, PROCESS TO MANUFACTURE A SEMIPERMEAVEL MEMBRANE, AND ULTRAFILTRATION PROCESS
EG12437A (en) Semipermeable membranes and the method for the preparation thereof
IT1050945B (en) SEPARATION MEMBRANES MADE IN POROUS GLASS..and PROCEDURE FOR THEIR MANUFACTURE
NO772074L (en) DIALYSIS MEMBRANE FOR HEMODIALYSE
DK409478A (en) SEMIPERMEABLE MEMBRANES
DK490876A (en) SEMIPERMEABLE MEMBRANE AND MANUFACTURING METHOD
AT367649B (en) SEMIPERMEABLE MEMBRANES
IT1124738B (en) SEMI-PERMEABLE MEMBRANES CONSTITUTED BY COPOLIAMIDES AND PROCEDURE FOR THEIR PREPARATION
IT1072311B (en) TIRE MOLDING MEMBRANE AND PROCESS FOR ITS MANUFACTURE
SE415662B (en) PROCEDURE FOR MANUFACTURING AN ASYMMETRIC PERMSELECTIVE CELLULOSATRIACETATE MEMBRANE AND USING ITS SAME
IT1085160B (en) SEMI-PERMEABLE MEMBRANES AND PROCEDURE FOR THEIR PRODUCTION
SE7714150L (en) SEMIPERMEABLE MEMBRANE AND PROCEDURE FOR MANUFACTURE OF THE SAME
IT1123942B (en) SEMIPERMEABLE MEMBRANES OF CAPOLIAMIDES AND PROCEDURE FOR THEIR PREPARATION
PT66438B (en) Device for the diffustion of substances between two fluidsvia semipermeable membranes
DK148436C (en) FIBROEST BACKGROUND FOR SEMIPERMEABLE MEMBRANES
BE880778A (en) SEPARATING APPARATUS, IN PARTICULAR FOR USE IN ULTRAFILTRATION
IT7948386A0 (en) PROCEDURE FOR THE TREATMENT OF SEMIPERMEABLE MEMBRANES AND PRODUCT OBTAINED
IT1143711B (en) PERMSELECTIVE MEMBRANES AND PROCESS FOR THEIR PREPARATION
JPS5322876A (en) Method of decreasing solution concentration using reverse osmosis membrane