NL7217668A - - Google Patents

Info

Publication number
NL7217668A
NL7217668A NL7217668A NL7217668A NL7217668A NL 7217668 A NL7217668 A NL 7217668A NL 7217668 A NL7217668 A NL 7217668A NL 7217668 A NL7217668 A NL 7217668A NL 7217668 A NL7217668 A NL 7217668A
Authority
NL
Netherlands
Application number
NL7217668A
Other versions
NL175884C (en
NL175884B (en
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 filed Critical
Publication of NL7217668A publication Critical patent/NL7217668A/xx
Publication of NL175884B publication Critical patent/NL175884B/en
Application granted granted Critical
Publication of NL175884C publication Critical patent/NL175884C/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/56Polyamides, e.g. polyester-amides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/42Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
NLAANVRAGE7217668,A 1971-12-30 1972-12-27 ANISOTROPE MEMBRANES FOR REVERSE OSMOSIS. NL175884C (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 (3)

Publication Number Publication Date
NL7217668A true NL7217668A (en) 1973-07-03
NL175884B NL175884B (en) 1984-08-16
NL175884C NL175884C (en) 1985-01-16

Family

ID=11236670

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7217668,A NL175884C (en) 1971-12-30 1972-12-27 ANISOTROPE MEMBRANES FOR REVERSE OSMOSIS.

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
US4837054A (en) * 1987-10-14 1989-06-06 Exxon Research And Engineering Company 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
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
NL7009957A (en) * 1969-07-08 1971-01-12
US3696031A (en) * 1969-07-08 1972-10-03 Consiglio Nazionale Ricerche Osmosis process

Also Published As

Publication number Publication date
DE2263774C2 (en) 1982-04-01
FR2166115B1 (en) 1976-04-23
BR7209266D0 (en) 1973-09-25
ES410178A1 (en) 1975-12-01
FR2166115A1 (en) 1973-08-10
BE793504A (en) 1973-06-29
IL41210A0 (en) 1973-02-28
NL175884C (en) 1985-01-16
DE2263774A1 (en) 1973-07-12
IL41210A (en) 1976-08-31
CA1018315A (en) 1977-10-04
EG10806A (en) 1976-09-30
JPS5611484B2 (en) 1981-03-14
GB1391559A (en) 1975-04-23
IT944578B (en) 1973-04-20
NL175884B (en) 1984-08-16
ZA729171B (en) 1973-09-26
JPS4880481A (en) 1973-10-27

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Discontinued because of reaching the maximum lifetime of a patent