IT1119271B - Membrana semipermeabile per osmosi inversa - Google Patents
Membrana semipermeabile per osmosi inversaInfo
- Publication number
- IT1119271B IT1119271B IT67283/79A IT6728379A IT1119271B IT 1119271 B IT1119271 B IT 1119271B IT 67283/79 A IT67283/79 A IT 67283/79A IT 6728379 A IT6728379 A IT 6728379A IT 1119271 B IT1119271 B IT 1119271B
- Authority
- IT
- Italy
- Prior art keywords
- semi
- reverse osmosis
- permeable membrane
- permeable
- membrane
- Prior art date
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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
- C08G65/263—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing heterocyclic amine 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/26—Di-epoxy compounds heterocyclic
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/36—Furfuryl alcohol
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)
- Reinforced Plastic Materials (AREA)
- Epoxy Resins (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1404678A JPS54107882A (en) | 1978-02-13 | 1978-02-13 | Semipermeable membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7967283A0 IT7967283A0 (it) | 1979-02-09 |
IT1119271B true IT1119271B (it) | 1986-03-10 |
Family
ID=11850148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT67283/79A IT1119271B (it) | 1978-02-13 | 1979-02-09 | Membrana semipermeabile per osmosi inversa |
Country Status (6)
Country | Link |
---|---|
US (2) | US4366062A (it) |
JP (1) | JPS54107882A (it) |
DE (1) | DE2904979A1 (it) |
FR (1) | FR2416711A1 (it) |
GB (1) | GB2016024B (it) |
IT (1) | IT1119271B (it) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107882A (en) * | 1978-02-13 | 1979-08-24 | Toray Ind Inc | Semipermeable membrane |
JPS56121603A (en) * | 1980-02-29 | 1981-09-24 | Toray Ind Inc | Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol |
DE3071096D1 (en) * | 1979-07-20 | 1985-10-24 | Toray Industries | Process for selectively separating water-soluble valuable materials from an aqueous solution containing same |
DE3167434D1 (en) * | 1980-07-02 | 1985-01-10 | Bayer Ag | Semipermeable membranes |
DE3127464C2 (de) * | 1981-07-11 | 1986-10-30 | Akzo Gmbh, 5600 Wuppertal | Linear segmentierte Polyurethane und Verfahren zu deren Herstellung |
JPH0643483B2 (ja) * | 1983-07-14 | 1994-06-08 | 三井東圧化学株式会社 | 新規なエポキシ樹脂及びその組成物 |
US4704324A (en) * | 1985-04-03 | 1987-11-03 | The Dow Chemical Company | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups |
US4761234A (en) * | 1985-08-05 | 1988-08-02 | Toray Industries, Inc. | Interfacially synthesized reverse osmosis membrane |
US4824574A (en) * | 1986-04-28 | 1989-04-25 | The Dow Chemical Company | Novel water softening process using membranes |
US4895661A (en) * | 1987-01-08 | 1990-01-23 | Filmtec Corporation | Alkali resistant hyperfiltration membrane |
US4834886A (en) * | 1987-01-08 | 1989-05-30 | Filmtec Corporation | Process for making alkali resistant hyperfiltration membrane and resulting product |
US4909943A (en) * | 1987-07-20 | 1990-03-20 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
US4894165A (en) * | 1987-07-20 | 1990-01-16 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
US5075006A (en) * | 1989-08-09 | 1991-12-24 | Exxon Research And Engineering Company | Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
US4929357A (en) * | 1989-08-09 | 1990-05-29 | Exxon Research And Engineering Company | Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
US4983338A (en) * | 1989-08-09 | 1991-01-08 | Exxon Research And Engineering Company | Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
US5019264A (en) * | 1990-07-31 | 1991-05-28 | E. I. Du Pont De Nemours And Company | Multilayer reverse osmosis membrane of polyamide-urea |
US5084182A (en) * | 1990-07-31 | 1992-01-28 | E. I. Du Pont De Nemours And Company | Method for manufacturing of multilayer reverse osmosis membrane of polyamide-urea |
USRE34058E (en) * | 1990-07-31 | 1992-09-08 | E. I. Du Pont De Nemours And Company | Multilayer reverse osmosis membrane of polyamide-urea |
US5039418A (en) * | 1990-12-06 | 1991-08-13 | Exxon Research And Engineering Company | Membrane made from a multi-block polymer comprising an oxazolidone prepolymer chain extended with a compatible second prepolymer and its use in separations |
KR960014337B1 (ko) * | 1993-12-20 | 1996-10-15 | 제일합섬 주식회사 | 복합반투막의 제조방법 |
US5545329A (en) * | 1995-05-08 | 1996-08-13 | Rochem Separation Systems | Method of refining oil |
KR0183370B1 (ko) * | 1995-07-07 | 1999-04-15 | 김은영 | 방향족 폴리에스테르 또는 방향족 폴리에스테르와 폴리아미드 공중합체의 활성층을 갖는 역삼투용 복합막 |
US6177011B1 (en) | 1996-03-18 | 2001-01-23 | Nitto Denko Corporation | Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same |
US6413425B1 (en) * | 1997-04-10 | 2002-07-02 | Nitto Denko Corporation | Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same |
US6824680B2 (en) * | 2001-05-07 | 2004-11-30 | New Jersey Institute Of Technology | Preparation of microporous films from immiscible blends via melt processing and stretching |
US6858141B2 (en) * | 2001-08-30 | 2005-02-22 | Council Of Scientific & Industrial Research (Csir) | Process for the preparation of ultrafiltration membranes of polyacrylonitrile, using malic acid as an additive |
WO2003106348A1 (en) * | 2002-06-01 | 2003-12-24 | Hydranautics | Methods for reducing boron concentration in high salinity liquid |
US20030230531A1 (en) * | 2002-06-13 | 2003-12-18 | Hydranautics And Nitto Denko Corporation | Method for reducing boron concentration in high salinity liquid |
US7651982B2 (en) * | 2004-08-21 | 2010-01-26 | Halliburton Energy Services, Inc. | Methods and aqueous acid solutions for acidizing wells containing sludging and emulsifying oil |
US7491334B2 (en) * | 2004-09-29 | 2009-02-17 | North Pacific Research, Llc | Method of treating reverse osmosis membranes for boron rejection enhancement |
US8357300B2 (en) | 2010-08-16 | 2013-01-22 | Hydranautics | Methods and materials for selective boron adsorption from aqueous solution |
EP2444443A1 (de) * | 2010-10-18 | 2012-04-25 | Basf Se | Hochfunktionelle Polyetherole sowie deren Herstellung und Verwendung |
US8466250B2 (en) | 2010-10-18 | 2013-06-18 | Basf Se | High-functionality polyetherols and preparation and use thereof |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1381032A (fr) * | 1959-03-13 | 1964-12-04 | Henkel & Cie Gmbh | Procédé de préparation de composés durcissables contenant des restes glycidyliques |
US3088949A (en) * | 1959-12-08 | 1963-05-07 | Ciba Ltd | New dyestuffs |
NL269380A (it) * | 1960-09-19 | |||
NL271831A (it) * | 1960-11-29 | |||
US3133137A (en) * | 1960-11-29 | 1964-05-12 | Univ California | High flow porous membranes for separating water from saline solutions |
NL302361A (it) * | 1963-01-31 | |||
US3293224A (en) * | 1963-08-05 | 1966-12-20 | Allied Chem | Tris (2-hydroxyethyl) isocyanurate homopolymer |
US3346534A (en) * | 1964-06-18 | 1967-10-10 | Ashland Oil Inc | Resinous foundry core binder |
US3378530A (en) * | 1965-03-15 | 1968-04-16 | Allied Chem | Process of preparing copolymers of tris(2-hydroxyethyl)isocyanurate and formaldehyde |
US3477996A (en) * | 1965-03-29 | 1969-11-11 | Allied Chem | Polyesters prepared from tris - (2-hydroxyalkyl) isocyanurates and ethylenically unsaturated dicarboxylic acid anhydrides |
US3392082A (en) * | 1965-04-16 | 1968-07-09 | Allied Chem | Modified melamine-formaldehyde resins modified with tris (2-hydroxyalkyl)isocyanurates and laminates made therewith |
US3446359A (en) * | 1965-07-20 | 1969-05-27 | Univ California | Desalination assembly and its method of manufacture |
US3763269A (en) * | 1968-03-25 | 1973-10-02 | Allied Chem | Polyesters from tris(2-hydroxyalkyl)isocyanurate homopolymers |
US3567632A (en) * | 1968-09-04 | 1971-03-02 | Du Pont | Permselective,aromatic,nitrogen-containing polymeric membranes |
US3631000A (en) * | 1969-06-04 | 1971-12-28 | Marathon Oil Co | Isocyanurate-containing polyisocyanates and method of preparation |
US3593852A (en) * | 1969-08-08 | 1971-07-20 | American Cyanamid Co | Reverse osmotic water purification |
US3660327A (en) * | 1970-06-08 | 1972-05-02 | George Co P D | Lactone or lactam pre-esterified isocyanurate-containing resins |
US3744642A (en) * | 1970-12-30 | 1973-07-10 | Westinghouse Electric Corp | Interface condensation desalination membranes |
US3763097A (en) * | 1971-11-16 | 1973-10-02 | Westinghouse Electric Corp | Polyether resins prepared from a diepoxide and a tris (2-hydroxyethyl) isocyanurate |
US3766181A (en) * | 1972-03-08 | 1973-10-16 | Olin Corp | Isocyanurate addition products with lactones |
US3892665A (en) * | 1973-10-15 | 1975-07-01 | Standard Oil Co | Membrane method and product |
DE2431071C2 (de) * | 1974-06-28 | 1982-03-04 | Bayer Ag, 5090 Leverkusen | Asymmetrische, semipermeable Membranen aus cyclischen Polyharnstoffen und deren Verwendung zur Meerwasserentsalzung oder zur Trennung und Konzentrierung von Stoffgemischen |
US3951815A (en) * | 1974-09-05 | 1976-04-20 | Universal Oil Products Company | Composite semipermeable membranes made from polyethylenimine |
US3926798A (en) * | 1974-10-17 | 1975-12-16 | Us Interior | Reverse osmosis membrane |
US4148734A (en) * | 1974-12-21 | 1979-04-10 | Chemie-Anlagenbau Bischofsheim Gmbh | Filter material and process for producing same |
US4005012A (en) * | 1975-09-22 | 1977-01-25 | The United States Of America As Represented By The Secretary Of The Interior | Semipermeable membranes and the method for the preparation thereof |
US4265745A (en) * | 1977-05-25 | 1981-05-05 | Teijin Limited | Permselective membrane |
JPS54107882A (en) * | 1978-02-13 | 1979-08-24 | Toray Ind Inc | Semipermeable membrane |
-
1978
- 1978-02-13 JP JP1404678A patent/JPS54107882A/ja active Granted
-
1979
- 1979-02-06 GB GB7904120A patent/GB2016024B/en not_active Expired
- 1979-02-09 IT IT67283/79A patent/IT1119271B/it active
- 1979-02-09 DE DE19792904979 patent/DE2904979A1/de active Granted
- 1979-02-12 FR FR7903531A patent/FR2416711A1/fr active Granted
-
1981
- 1981-02-06 US US06/232,112 patent/US4366062A/en not_active Expired - Lifetime
-
1984
- 1984-02-01 US US06/575,721 patent/US4557949A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2016024B (en) | 1982-02-10 |
GB2016024A (en) | 1979-09-19 |
IT7967283A0 (it) | 1979-02-09 |
US4557949A (en) | 1985-12-10 |
FR2416711B1 (it) | 1984-12-28 |
DE2904979A1 (de) | 1979-08-16 |
US4366062A (en) | 1982-12-28 |
JPS54107882A (en) | 1979-08-24 |
DE2904979C2 (it) | 1989-04-06 |
FR2416711A1 (fr) | 1979-09-07 |
JPS5721364B2 (it) | 1982-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970227 |