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CA1024711A - Reverse osmosis anisotropic membranes based on polypiperazine amides, and process for preparing such membranes - Google Patents

Reverse osmosis anisotropic membranes based on polypiperazine amides, and process for preparing such membranes

Info

Publication number
CA1024711A
CA1024711A CA190,326A CA190326A CA1024711A CA 1024711 A CA1024711 A CA 1024711A CA 190326 A CA190326 A CA 190326A CA 1024711 A CA1024711 A CA 1024711A
Authority
CA
Canada
Prior art keywords
membranes
preparing
reverse osmosis
anisotropic
polypiperazine
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
CA190,326A
Other languages
French (fr)
Inventor
Giovanni Baruzzi
Vincenzo Guidotti
Lino Credali
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
Application granted granted Critical
Publication of CA1024711A publication Critical patent/CA1024711A/en
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Polyamides (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
CA190,326A 1973-01-16 1974-01-16 Reverse osmosis anisotropic membranes based on polypiperazine amides, and process for preparing such membranes Expired CA1024711A (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 (1)

Publication Number Publication Date
CA1024711A true CA1024711A (en) 1978-01-24

Family

ID=11156091

Family Applications (1)

Application Number Title Priority Date Filing Date
CA190,326A Expired CA1024711A (en) 1973-01-16 1974-01-16 Reverse osmosis anisotropic membranes based on polypiperazine amides, 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
DE2704600C3 (en) * 1977-02-04 1988-05-26 Hoechst Ag, 6230 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696031A (en) * 1969-07-08 1972-10-03 Consiglio Nazionale Ricerche Osmosis process
US3687842A (en) * 1969-07-08 1972-08-29 Consiglio Nazionale Ricerche Osmosis process
US3664986A (en) * 1969-10-14 1972-05-23 Du Pont 1,2,5-thiadiazole polymers
BE793504A (en) * 1971-12-30 1973-06-29 Montedison Spa ANISOTROPIC RETROOSMOSIS MEMBRANES AND THEIR PREPARATION PROCESS

Also Published As

Publication number Publication date
BE809757A (en) 1974-07-15
JPS49109271A (en) 1974-10-17
IT978187B (en) 1974-09-20
DE2401428C2 (en) 1985-11-14
FR2324335B1 (en) 1978-02-10
JPS574361B2 (en) 1982-01-26
GB1402247A (en) 1975-08-06
FR2324335A1 (en) 1977-04-15
NL176231C (en) 1985-03-18
ZA74296B (en) 1974-11-27
ES422290A1 (en) 1976-04-01
AU6450974A (en) 1975-07-17
DE2401428A1 (en) 1974-07-18
NL7400402A (en) 1974-07-18
IL44156A0 (en) 1974-05-16
NL176231B (en) 1984-10-16
IL44156A (en) 1976-08-31

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