ES2049919T3 - Membrana porosa de fluoruro de polivinilideno y metodo para su fabricacion. - Google Patents
Membrana porosa de fluoruro de polivinilideno y metodo para su fabricacion.Info
- Publication number
- ES2049919T3 ES2049919T3 ES90300384T ES90300384T ES2049919T3 ES 2049919 T3 ES2049919 T3 ES 2049919T3 ES 90300384 T ES90300384 T ES 90300384T ES 90300384 T ES90300384 T ES 90300384T ES 2049919 T3 ES2049919 T3 ES 2049919T3
- Authority
- ES
- Spain
- Prior art keywords
- polyvinylidene fluoride
- porous membrane
- manufacture
- layroid
- membrane
- 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 - Lifetime
Links
- 239000012528 membrane Substances 0.000 title abstract 4
- 239000002033 PVDF binder Substances 0.000 title abstract 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
- B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
-
- 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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/02—Hydrophilization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
- C08J2201/0542—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
- C08J2201/0543—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
- C08J2201/0545—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition
- C08J2201/0546—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition the non-solvent being organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
UNA MEMBRANA POROSA QUE COMPRENDE UNA RESINA DE FLUORURO DE POLIVINILIDENO QUE TIENE UNA ESTRUCTURA POROSA UNIFORME EN RED TRIDIMENSIONAL. LA MEMBRANA TIENE UNA EXCELENTE RESISTENCIA QUIMICA, EXCELENTES CARACTERISTICAS DE FILTRACION Y EXCELENTES PROPIEDADES MECANICAS. LA MEMBRANA POROSA PUEDE PRODUCIRSE UNIENDO UNA RESINA DE FLUORURO DE POLIVINILIDENO, UN LIQUIDO ORGANICO Y UN SILICE HIDROFOBICO EN POLVO, SOMETIENDO LA MEZCLA RESULTANTE A UN MOLDEO POR FUSION PARA FORMAR UNA MEMBRANA, Y EXTRAYYENDO EL LIQUIDO ORGANICO Y LA SILICA HIDROFOBICA DE LA MEMBRANA MOLDEADA POR FUSION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP367589 | 1989-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2049919T3 true ES2049919T3 (es) | 1994-05-01 |
Family
ID=11564000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90300384T Expired - Lifetime ES2049919T3 (es) | 1989-01-12 | 1990-01-12 | Membrana porosa de fluoruro de polivinilideno y metodo para su fabricacion. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5022990A (es) |
EP (1) | EP0378441B1 (es) |
DE (1) | DE69007130T2 (es) |
ES (1) | ES2049919T3 (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2177380A1 (es) * | 2000-02-09 | 2002-12-01 | Univ Granada | Procedimiento para la eliminacion de contaminantes biologicos del agua. |
ES2228241A1 (es) * | 2003-02-20 | 2005-04-01 | Tratasa 2000, S.L. | Procedimiento para fabricar un filtro para agua y otros fluidos. |
Families Citing this family (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5489406A (en) * | 1990-05-09 | 1996-02-06 | Memtec Limited | Method of making polyvinylidene fluoride membrane |
DE69130879T2 (de) * | 1990-05-09 | 1999-07-29 | Usf Filtration Ltd., South Windsor, Neu Sued Wales | Polyvinylidenmembrane |
US5183607A (en) * | 1991-12-17 | 1993-02-02 | Beall George H | Polymer membranes for separation process |
US5480554A (en) * | 1992-05-13 | 1996-01-02 | Pall Corporation | Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same |
US5788862A (en) * | 1992-05-13 | 1998-08-04 | Pall Corporation | Filtration medium |
CA2100643A1 (en) * | 1992-08-14 | 1994-02-15 | Guido Sartori | Fluorinated polyolefin membranes for aromatics/saturates separation |
US5275766A (en) * | 1992-10-30 | 1994-01-04 | Corning Incorporate | Method for making semi-permeable polymer membranes |
US5438129A (en) * | 1993-09-27 | 1995-08-01 | Becton Dickinson And Company | DNA purification by solid phase extraction using partially fluorinated aluminum hydroxide adsorbant |
US5514461A (en) * | 1993-10-05 | 1996-05-07 | Kureha Chemical Industry Co., Ltd. | Vinylidene fluoride porous membrane and method of preparing the same |
CA2128296A1 (en) * | 1993-12-22 | 1995-06-23 | Peter John Degen | Polyvinylidene fluoride membrane |
US6165363A (en) * | 1995-12-18 | 2000-12-26 | Asahi Kasei Kogyo Kabushiki Kaisha | Hollow fiber type filtration membrane |
US6074718A (en) * | 1996-02-06 | 2000-06-13 | Koch Membrane Systems, Inc. | Self supporting hollow fiber membrane and method of construction |
US5728121A (en) * | 1996-04-17 | 1998-03-17 | Teleflex Medical, Inc. | Surgical grasper devices |
US6126671A (en) * | 1996-10-07 | 2000-10-03 | Tfx Medical, Incorporated | Grasping devices and articles |
EP1897606B1 (en) * | 1996-12-10 | 2009-12-09 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for preparing porous polyvinylidene fluoride resin membrane |
US20040135274A1 (en) * | 1998-03-16 | 2004-07-15 | Shigenobu Matsuda | Microporous membrane |
AU736329B2 (en) * | 1998-06-22 | 2001-07-26 | Asahi Kasei Kabushiki Kaisha | Porous polyvinylidene fluoride resin membrane and process for preparing the same |
US6295986B1 (en) * | 2000-01-12 | 2001-10-02 | Aradigm Corporation | Reactive ion etching method of fabricating nozzles for aerosolized delivery of therapeutic or diagnostic agents |
EP1251102B1 (en) * | 2000-01-18 | 2006-09-27 | Asahi Kasei Kabushiki Kaisha | Method for purifying suspended water by membrane filtration |
US6582810B2 (en) | 2000-12-22 | 2003-06-24 | Kimberly-Clark Worldwide, Inc. | One-step method of producing an elastic, breathable film structure |
ES2306756T3 (es) * | 2001-03-06 | 2008-11-16 | Asahi Kasei Chemicals Corporation | Metodo para la produccion de membranas de fibras huecas. |
US6596167B2 (en) | 2001-03-26 | 2003-07-22 | Koch Membrane Systems, Inc. | Hydrophilic hollow fiber ultrafiltration membranes that include a hydrophobic polymer and a method of making these membranes |
DE60232668D1 (de) * | 2001-10-04 | 2009-07-30 | Toray Industries | Verfahren zur herstellung einer hohlfasermembran |
EP1520874B1 (en) * | 2002-06-14 | 2011-12-28 | Toray Industries, Inc. | Porous membrane and method of manufacturing the porous membrane |
EP1550746A4 (en) * | 2002-08-05 | 2010-08-04 | Toray Industries | POROUS FIBER |
WO2004022868A2 (en) * | 2002-09-03 | 2004-03-18 | University Of Virginia Patent Foundation | Blast and ballistic protection systems and method of making the same |
US7165682B1 (en) * | 2003-07-16 | 2007-01-23 | Accord Partner Limited | Defect free composite membranes, method for producing said membranes and use of the same |
US7172075B1 (en) * | 2003-08-08 | 2007-02-06 | Accord Partner Limited | Defect free composite membranes, method for producing said membranes and use of the same |
US7338692B2 (en) | 2003-09-12 | 2008-03-04 | 3M Innovative Properties Company | Microporous PVDF films |
CA2540471A1 (en) * | 2003-10-03 | 2005-04-14 | Kureha Corporation | Vinylidene fluoride based resin porous hollow yarn and method for production thereof |
US20050155926A1 (en) * | 2003-10-20 | 2005-07-21 | Kim Kwon I. | System and method for synthesizing a polymer membrane |
US20050142280A1 (en) * | 2003-10-20 | 2005-06-30 | Kim Kwon I. | System and method for synthesizing a polymer membrane |
JP4931796B2 (ja) * | 2005-02-15 | 2012-05-16 | 株式会社クレハ | フッ化ビニリデン系樹脂中空糸多孔膜、それを用いる水の濾過方法およびその製造方法 |
CN101282780B (zh) * | 2005-10-13 | 2012-10-31 | 旭化成化学株式会社 | 多孔性多层中空纤维膜及其制造方法 |
JP5076320B2 (ja) * | 2006-01-11 | 2012-11-21 | 東洋紡績株式会社 | ポリフッ化ビニリデン系中空糸型微多孔膜の製造方法 |
KR101310815B1 (ko) * | 2006-03-16 | 2013-09-27 | 에치투엘 주식회사 | 중공사막 및 그의 제조방법 |
US20100133169A1 (en) * | 2007-03-23 | 2010-06-03 | Yasuhiro Tada | Vinylidene fluoride resin hollow-fiber porous membrane and process for production of the same |
CN101293185A (zh) * | 2008-01-30 | 2008-10-29 | 清华大学 | 一种制备聚偏氟乙烯多孔膜的方法 |
EP2196254B1 (de) | 2008-12-12 | 2011-10-12 | Membrana GmbH | Hydrophobe ozonstabile PVDF-Membran mit hoher mechanischer Stabilität |
US20110189761A1 (en) * | 2009-01-26 | 2011-08-04 | Island Giant Development Llp | Method for producing cell culture scaffold |
JP2010167388A (ja) * | 2009-01-26 | 2010-08-05 | Emprie Technology Development LLC | ナノポーラス表面を有する製品の製造方法 |
JP2010188426A (ja) * | 2009-01-26 | 2010-09-02 | Emprie Technology Development LLC | 清拭シート |
WO2010108285A1 (en) | 2009-03-26 | 2010-09-30 | Asteia Technology Inc. | Non-braided reinforced hollow fibre membrane |
US9061250B2 (en) | 2009-06-26 | 2015-06-23 | Bl Technologies, Inc. | Non-braided, textile-reinforced hollow fiber membrane |
CN102085457B (zh) * | 2009-12-07 | 2013-01-02 | 广州美能材料科技有限公司 | 一种制备复合多层多孔中空纤维膜的方法及其装置和产品 |
WO2011129308A1 (ja) | 2010-04-12 | 2011-10-20 | 日東電工株式会社 | イオン伝導性有機無機複合粒子、粒子含有樹脂組成物およびイオン伝導性成形体 |
JP6058250B2 (ja) | 2010-04-12 | 2017-01-11 | 日東電工株式会社 | 粒子分散樹脂組成物、粒子分散樹脂成形体およびそれらの製造方法 |
US9211506B2 (en) | 2010-09-02 | 2015-12-15 | The University Of Hong Kong | Doping of inorganic minerals to hydrophobic membrane surface |
CN102397759B (zh) * | 2010-09-08 | 2014-05-14 | 绵阳美能材料科技有限公司 | 一种聚醚砜中空纤维滤膜及其制备方法 |
AU2011302393B2 (en) | 2010-09-15 | 2016-09-08 | Bl Technologies, Inc. | Method to make a yarn-reinforced hollow fibre membranes around a soluble core |
US8529814B2 (en) | 2010-12-15 | 2013-09-10 | General Electric Company | Supported hollow fiber membrane |
US20140178582A1 (en) | 2011-08-22 | 2014-06-26 | Dow Global Technologies Llc | Composite membrane formed from polymer blend including self-assembling block copolymers |
US9321014B2 (en) | 2011-12-16 | 2016-04-26 | Bl Technologies, Inc. | Hollow fiber membrane with compatible reinforcements |
US9643129B2 (en) | 2011-12-22 | 2017-05-09 | Bl Technologies, Inc. | Non-braided, textile-reinforced hollow fiber membrane |
US9022229B2 (en) | 2012-03-09 | 2015-05-05 | General Electric Company | Composite membrane with compatible support filaments |
US8999454B2 (en) | 2012-03-22 | 2015-04-07 | General Electric Company | Device and process for producing a reinforced hollow fibre membrane |
US9227362B2 (en) | 2012-08-23 | 2016-01-05 | General Electric Company | Braid welding |
WO2014040171A1 (en) * | 2012-09-11 | 2014-03-20 | Universite Laval | Microporous and hydrophobic polymeric hollow fiber membranes and methods for preparation thereof |
KR101483740B1 (ko) * | 2013-06-04 | 2015-01-16 | 주식회사 에코니티 | 비대칭성 폴리비닐리덴플루오라이드 중공사막의 제조방법 및 이로부터 제조된 중공사막 |
CN113893703A (zh) | 2014-01-10 | 2022-01-07 | 旭化成株式会社 | 多孔性中空纤维膜及其制造方法、以及净水方法 |
US10702834B2 (en) | 2014-07-07 | 2020-07-07 | Toray Industries, Inc. | Separation membrane and method for producing same |
HUE051691T2 (hu) | 2014-12-26 | 2021-10-28 | Toray Industries | Porózus üreges szálmembrán |
US10456753B2 (en) * | 2015-08-31 | 2019-10-29 | Toray Industries, Inc. | Porous hollow fiber membrane |
CN105126648B (zh) | 2015-09-21 | 2018-03-09 | 江苏凯米膜科技股份有限公司 | 一种基于聚乙烯醇凝胶制备网络孔聚偏氟乙烯膜的方法 |
KR102524285B1 (ko) | 2016-02-25 | 2023-04-24 | 도레이 카부시키가이샤 | 다공질 중공사막 |
WO2017155004A1 (ja) * | 2016-03-09 | 2017-09-14 | 旭化成株式会社 | 多孔性中空糸膜及びその製造方法、並びにろ過方法 |
CN105797591B (zh) * | 2016-03-28 | 2019-01-18 | 上海应用技术学院 | 一种超疏水性聚偏氟乙烯微孔膜的制备方法 |
AU2018236989B2 (en) | 2017-03-24 | 2021-08-12 | Asahi Kasei Kabushiki Kaisha | Porous membrane for membrane distillation, and method for operating membrane distillation module |
CN114632428B (zh) * | 2020-12-15 | 2023-01-20 | 中化(宁波)润沃膜科技有限公司 | 聚偏氟乙烯基膜、聚偏氟乙烯复合纳滤膜及其制备方法 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3642668A (en) * | 1969-01-03 | 1972-02-15 | Polaroid Corp | Microporous vinylidene fluoride polymer and process of making same |
DE2165073A1 (de) * | 1971-12-28 | 1973-07-12 | Sartorius Membranfilter Gmbh | Mehrschichten-filtermembrane, verfahren zu deren herstellung und deren verwendung |
JPS4922472A (es) * | 1972-06-22 | 1974-02-27 | ||
US3862030A (en) * | 1972-12-13 | 1975-01-21 | Amerace Esna Corp | Microporous sub-micron filter media |
US4203848A (en) * | 1977-05-25 | 1980-05-20 | Millipore Corporation | Processes of making a porous membrane material from polyvinylidene fluoride, and products |
US4203847A (en) * | 1977-05-25 | 1980-05-20 | Millipore Corporation | Making porous membranes and the membrane products |
CH625966A5 (es) * | 1977-07-15 | 1981-10-30 | Kilcher Chemie Ag | |
DE2816085B2 (de) * | 1978-04-13 | 1981-04-23 | Sartorius GmbH, 3400 Göttingen | Asymmetrische Ultrafiltrationsmembrane auf der Basis von Zellulosehydrat |
US4237083A (en) * | 1979-02-13 | 1980-12-02 | Evans Products Company | Process of manufacturing a microporous sheet material |
JPS5637836A (en) * | 1979-08-31 | 1981-04-11 | Pioneer Electronic Corp | Replica making method for video disk |
JPS5656202A (en) * | 1979-10-15 | 1981-05-18 | Asahi Chem Ind Co Ltd | Hollow porous membrane yarn made of polyvinylidene fluoride type resin |
DE3129745C2 (de) * | 1981-07-28 | 1985-01-17 | Hoechst Ag, 6230 Frankfurt | Offenporig-mikroporös ausgebildeter Formkörper mit inhärenter latenter Strukturumwandelbarkeit |
JPS5891732A (ja) * | 1981-11-27 | 1983-05-31 | Teijin Ltd | ポリフツ化ビニリデン系樹脂多孔膜及びその製法 |
JPS5893734A (ja) * | 1981-11-30 | 1983-06-03 | Asahi Chem Ind Co Ltd | 親水性ポリフツ化ビニリデン樹脂多孔膜の製造方法 |
JPS6097001A (ja) * | 1983-11-02 | 1985-05-30 | Teijin Ltd | ポリフツ化ビニリデン多孔性膜およびその製造方法 |
GB8431549D0 (en) * | 1984-12-13 | 1985-01-23 | Weatherford Uk Ltd | Rotating tubular member |
GB2168981B (en) * | 1984-12-27 | 1988-07-06 | Asahi Chemical Ind | Porous fluorine resin membrane and process for preparation thereof |
NZ218971A (en) * | 1986-01-21 | 1989-05-29 | Mitsui Toatsu Chemicals | Porous polyolefin films and their preparation |
US4774132A (en) * | 1986-05-01 | 1988-09-27 | Pall Corporation | Polyvinylidene difluoride structure |
FR2600265B1 (fr) * | 1986-06-20 | 1991-09-06 | Rhone Poulenc Rech | Membranes semi-permeables sechables et hydrophiles a base de polyfluorure de vinylidene |
US4833172A (en) * | 1987-04-24 | 1989-05-23 | Ppg Industries, Inc. | Stretched microporous material |
US4806291A (en) * | 1988-02-22 | 1989-02-21 | Ionics, Incorporated | Process for preparing microporous polyvinylidene fluoride membranes |
IT1216467B (it) * | 1988-02-26 | 1990-03-08 | Separem Spa | Membrana semipermeabile per la separazione di fluidi, procedimento per la sua preparazione e uso ditale membrana per microfiltrazione, distillazione, e tessuti speciali. |
US4842741A (en) * | 1988-03-25 | 1989-06-27 | Du Pont Canada Inc. | Heterogeneous membranes from highly filled thermoplastic orientable polymers |
-
1990
- 1990-01-10 US US07/463,058 patent/US5022990A/en not_active Expired - Lifetime
- 1990-01-12 EP EP90300384A patent/EP0378441B1/en not_active Expired - Lifetime
- 1990-01-12 DE DE69007130T patent/DE69007130T2/de not_active Expired - Lifetime
- 1990-01-12 ES ES90300384T patent/ES2049919T3/es not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2177380A1 (es) * | 2000-02-09 | 2002-12-01 | Univ Granada | Procedimiento para la eliminacion de contaminantes biologicos del agua. |
ES2228241A1 (es) * | 2003-02-20 | 2005-04-01 | Tratasa 2000, S.L. | Procedimiento para fabricar un filtro para agua y otros fluidos. |
Also Published As
Publication number | Publication date |
---|---|
US5022990A (en) | 1991-06-11 |
EP0378441B1 (en) | 1994-03-09 |
DE69007130T2 (de) | 1994-10-13 |
EP0378441A2 (en) | 1990-07-18 |
DE69007130D1 (de) | 1994-04-14 |
EP0378441A3 (en) | 1990-11-14 |
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