ES410178A1 - Reverse osmosis membranes - Google Patents

Reverse osmosis membranes

Info

Publication number
ES410178A1
ES410178A1 ES410178A ES410178A ES410178A1 ES 410178 A1 ES410178 A1 ES 410178A1 ES 410178 A ES410178 A ES 410178A ES 410178 A ES410178 A ES 410178A ES 410178 A1 ES410178 A1 ES 410178A1
Authority
ES
Spain
Prior art keywords
reverse osmosis
formula
preparation
osmosis membranes
polyperazzinamides
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
ES410178A
Other languages
Spanish (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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison 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, Montecatini Edison SpA filed Critical Montedison SpA
Publication of ES410178A1 publication Critical patent/ES410178A1/en
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
    • B01D71/56—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
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • 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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Procedure for the preparation of reverse osmosis anisotropic polymeric membranes, with water flow and high saline rejection, based on polyperazzinamides, characterized in that it provides, in the order shown, the following steps. 1st: The preparation of a solution of polyperazinamides with a structure defined by formula (I) below ** formula ** in which n is an integer, high enough to have an appropriate molecular weight for the formation of a membrane. Group P is a bivalent organic radical (Machine-translation by Google Translate, not legally binding)
ES410178A 1971-12-30 1972-12-29 Reverse osmosis membranes Expired ES410178A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT33137/71A IT944578B (en) 1971-12-30 1971-12-30 POLYMER MEMBRANES FOR REVERSE OSMOSIS WITH HIGH FLOW OF WATER AND HIGH SALINE REJECTION AND METHOD OF PREPARATION OF SUCH MEMBRANES

Publications (1)

Publication Number Publication Date
ES410178A1 true ES410178A1 (en) 1975-12-01

Family

ID=11236670

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410178A Expired ES410178A1 (en) 1971-12-30 1972-12-29 Reverse osmosis membranes

Country Status (13)

Country Link
JP (1) JPS5611484B2 (en)
BE (1) BE793504A (en)
BR (1) BR7209266D0 (en)
CA (1) CA1018315A (en)
DE (1) DE2263774C2 (en)
EG (1) EG10806A (en)
ES (1) ES410178A1 (en)
FR (1) FR2166115B1 (en)
GB (1) GB1391559A (en)
IL (1) IL41210A (en)
IT (1) IT944578B (en)
NL (1) NL175884C (en)
ZA (1) ZA729171B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA74296B (en) * 1973-01-16 1974-11-27 Montedison Spa Reverse osmosis anisotropic membranes with great water flow and strong saline rejection,based on polypiperazine amides,and process for preparing such membranes
DE3220376A1 (en) * 1982-05-29 1983-12-01 Seitz-Filter-Werke Theo & Geo Seitz GmbH und Co, 6550 Bad Kreuznach MEMBRANE FILTER FOR MICROFILTRATION AND METHOD FOR THE PRODUCTION THEREOF
IT1153101B (en) * 1982-07-01 1987-01-14 Montedison Spa PROCEDURE FOR THE PREPARATION OF ANISOTROPIC FORMED BODIES BASED ON POLY-PIPERAZINAMIDES
IT1222627B (en) * 1987-09-09 1990-09-05 Separem Spa PROCEDURE FOR THE PREPARATION OF MEMBRANES FOR REVERSE OSMOSIS AND MEMBRANES OBTAINED BY THIS PROCEDURE
US4921611A (en) * 1987-10-14 1990-05-01 Schucker Robert C Thin film composite membrane prepared by deposition from a solution
US4879044A (en) * 1987-10-14 1989-11-07 Exxon Research And Engineering Company Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non aromatics
US4861628A (en) * 1987-10-14 1989-08-29 Exxon Research And Engineering Company Thin film composite membrane prepared by suspension deposition
US4828773A (en) * 1987-10-14 1989-05-09 Exxon Research And Engineering Company Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics
US4837054A (en) * 1987-10-14 1989-06-06 Exxon Research And Engineering Company Thin film composite membrane prepared by deposition from a solution
US5045354A (en) * 1989-12-19 1991-09-03 Exxon Research & Engineering Company Production of supported thin film membranes

Family Cites Families (2)

* 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.
US3687842A (en) * 1969-07-08 1972-08-29 Consiglio Nazionale Ricerche Osmosis process

Also Published As

Publication number Publication date
BE793504A (en) 1973-06-29
CA1018315A (en) 1977-10-04
FR2166115B1 (en) 1976-04-23
DE2263774C2 (en) 1982-04-01
IT944578B (en) 1973-04-20
ZA729171B (en) 1973-09-26
DE2263774A1 (en) 1973-07-12
EG10806A (en) 1976-09-30
FR2166115A1 (en) 1973-08-10
JPS4880481A (en) 1973-10-27
NL175884C (en) 1985-01-16
GB1391559A (en) 1975-04-23
IL41210A0 (en) 1973-02-28
NL7217668A (en) 1973-07-03
IL41210A (en) 1976-08-31
BR7209266D0 (en) 1973-09-25
NL175884B (en) 1984-08-16
JPS5611484B2 (en) 1981-03-14

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