FR2324335A1 - ANISOTROPIC MEMBRANES FOR REVERSE OSMOSIS AND PROCESS FOR PREPARING SUCH MEMBRANES - Google Patents

ANISOTROPIC MEMBRANES FOR REVERSE OSMOSIS AND PROCESS FOR PREPARING SUCH MEMBRANES

Info

Publication number
FR2324335A1
FR2324335A1 FR7401108A FR7401108A FR2324335A1 FR 2324335 A1 FR2324335 A1 FR 2324335A1 FR 7401108 A FR7401108 A FR 7401108A FR 7401108 A FR7401108 A FR 7401108A FR 2324335 A1 FR2324335 A1 FR 2324335A1
Authority
FR
France
Prior art keywords
membranes
preparing
reverse osmosis
anisotropic
anisotropic membranes
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.)
Granted
Application number
FR7401108A
Other languages
French (fr)
Other versions
FR2324335B1 (en
Inventor
Lino Credali
Giovanni Baruzzi
Vincenzo Guidotti
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of FR2324335A1 publication Critical patent/FR2324335A1/en
Application granted granted Critical
Publication of FR2324335B1 publication Critical patent/FR2324335B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/40—Polyamides containing oxygen in the form of ether groups
    • 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
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/42—Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
FR7401108A 1973-01-16 1974-01-14 ANISOTROPIC MEMBRANES FOR REVERSE OSMOSIS AND PROCESS FOR PREPARING SUCH MEMBRANES Granted FR2324335A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19247/73A IT978187B (en) 1973-01-16 1973-01-16 ANISOTROPIC MEMBRANES FOR REVERSE OSMOSIS WITH HIGH FLOW AND ELEVATE SALINE REJECTION BASED ON POLYPERAZINAMIDES AND RELATIVE PREPARATION PROCEDURES

Publications (2)

Publication Number Publication Date
FR2324335A1 true FR2324335A1 (en) 1977-04-15
FR2324335B1 FR2324335B1 (en) 1978-02-10

Family

ID=11156091

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401108A Granted FR2324335A1 (en) 1973-01-16 1974-01-14 ANISOTROPIC MEMBRANES FOR REVERSE OSMOSIS AND PROCESS FOR PREPARING SUCH MEMBRANES

Country Status (12)

Country Link
JP (1) JPS574361B2 (en)
AU (1) AU6450974A (en)
BE (1) BE809757A (en)
CA (1) CA1024711A (en)
DE (1) DE2401428C2 (en)
ES (1) ES422290A1 (en)
FR (1) FR2324335A1 (en)
GB (1) GB1402247A (en)
IL (1) IL44156A (en)
IT (1) IT978187B (en)
NL (1) NL176231C (en)
ZA (1) ZA74296B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704600B2 (en) * 1977-02-04 1979-08-30 Hoechst Ag, 6000 Frankfurt Permselective, asymmetric hemofiltration membrane with heteroporous structure based on polyamide
JPS57174107A (en) * 1981-04-20 1982-10-26 Teijin Ltd Production of permselective membrane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2054256A5 (en) * 1969-07-08 1971-04-16 Consiglio Nazionale Ricerche
US3664986A (en) * 1969-10-14 1972-05-23 Du Pont 1,2,5-thiadiazole polymers
FR2166115A1 (en) * 1971-12-30 1973-08-10 Montedison Spa

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL171019C (en) * 1969-07-08 1983-02-01 Consiglio Nazionale Ricerche MEMBRANES FOR REVERSE OSMOSIS.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2054256A5 (en) * 1969-07-08 1971-04-16 Consiglio Nazionale Ricerche
US3664986A (en) * 1969-10-14 1972-05-23 Du Pont 1,2,5-thiadiazole polymers
FR2166115A1 (en) * 1971-12-30 1973-08-10 Montedison Spa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ARTICLE: "CONDENSATION POLYMERS FROM 1,2,5-THIADIAZOLE-3,4-DICARBOXYLIC ACID" BY R.N.MACDONALD DANS JOURNAL OF POLYMER SCIENCE VOL. 11, NO. 10, OCT 173 PAGES 2519-2536) *

Also Published As

Publication number Publication date
JPS49109271A (en) 1974-10-17
FR2324335B1 (en) 1978-02-10
ES422290A1 (en) 1976-04-01
DE2401428C2 (en) 1985-11-14
NL176231B (en) 1984-10-16
IL44156A (en) 1976-08-31
NL176231C (en) 1985-03-18
CA1024711A (en) 1978-01-24
AU6450974A (en) 1975-07-17
BE809757A (en) 1974-07-15
IT978187B (en) 1974-09-20
DE2401428A1 (en) 1974-07-18
JPS574361B2 (en) 1982-01-26
NL7400402A (en) 1974-07-18
ZA74296B (en) 1974-11-27
IL44156A0 (en) 1974-05-16
GB1402247A (en) 1975-08-06

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