ES2067637T3 - Procedimiento para producir una multicapa de membrana porosa de politetrafluoroetileno y estructura de multicapa de politetrafluoroetileno semisinterizada. - Google Patents
Procedimiento para producir una multicapa de membrana porosa de politetrafluoroetileno y estructura de multicapa de politetrafluoroetileno semisinterizada.Info
- Publication number
- ES2067637T3 ES2067637T3 ES90123480T ES90123480T ES2067637T3 ES 2067637 T3 ES2067637 T3 ES 2067637T3 ES 90123480 T ES90123480 T ES 90123480T ES 90123480 T ES90123480 T ES 90123480T ES 2067637 T3 ES2067637 T3 ES 2067637T3
- Authority
- ES
- Spain
- Prior art keywords
- multilayer
- polyetrafluoroethylene
- semi
- porous membrane
- multilayer structure
- 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
- 238000000034 method Methods 0.000 title abstract 3
- 239000012528 membrane Substances 0.000 title abstract 2
- 238000001125 extrusion Methods 0.000 abstract 4
- 239000007788 liquid Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- -1 POLYETHYLETHYLENE STRUCTURE Polymers 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/1212—Coextruded layers
-
- 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
- B01D71/36—Polytetrafluoroethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/94—Lubricating
- B29C48/95—Lubricating by adding lubricant to the moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
Abstract
SE DESCRIBE EL PROCESO PARA PRODUCIR UNA MEMBRANA POROSA DE POLITETRAFLUOROETILENO MULTICAPA, CUYO PROCESO INCLUYE AL MENOS DOS CAPAS QUE TIENEN DIAMETROS DE PORO DE MEDIA DIFERENTE, EL PROCESO CONSTA DE LAS SIGUIENTES ETAPAS: LLENADO DEL INTERIOR DE UN CILINDRO DE UN MOLDE DE EXTRUSION CARACTERISTICA CON AL MENOS DOS CLASES DE POLVOS DE LOS CUALES SE HA MEZCLADO CON UN LIQUIDO LUBRICANTE; LOS POLVOS FORMAN UNA PASTA DE EXTRUSION PARA OBTENER UNA EXTRUSION MULTICAPA, LA CUAL ES ENTONCES OPCIONALMENTE LAMINADA; ELIMINANDO EL LIQUIDO MULTICAPA DE LA EXTRUSION MULTICAPA O DE LA EXTRUSION MULTICAPA LAMINADA PARA OBTENER UNA ESTRUCTURA MULTICAPA NO SINTERIZADA NO INFERIORMENTE AL PUNTO DE FUSION DEL POLITETRAFLUOROETILENO PARA OBTENER UNA ESTRUCTURA MULTICAPA SEMISINTERIZADA; Y ENTONCES EXTENDER LA ESTRUCTURA MULTICAPA SEMISINTERIZADA AL MENOS MONOAXIALMENTE. SE DESCRIBE TAMBIEN UNA ESTRUCTURA MULTICAPA DE POLITETRAFLUOREOTILENO SEMISINTERIZADO CAPAZ DE SER UTILIZADA COMO UN MATERIAL INTERMEDIOPARA EL PROCESO DESCRITO ARRIBA.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1320274A JPH078927B2 (ja) | 1989-12-07 | 1989-12-07 | ポリテトラフルオロエチレン複層多孔膜の製造方法 |
JP5775990A JPH0694186B2 (ja) | 1990-03-08 | 1990-03-08 | ポリテトラフルオロエチレン複層半焼成体 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2067637T3 true ES2067637T3 (es) | 1995-04-01 |
Family
ID=26398834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90123480T Expired - Lifetime ES2067637T3 (es) | 1989-12-07 | 1990-12-06 | Procedimiento para producir una multicapa de membrana porosa de politetrafluoroetileno y estructura de multicapa de politetrafluoroetileno semisinterizada. |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0437721B1 (es) |
KR (1) | KR0150642B1 (es) |
CN (1) | CN1029201C (es) |
AU (1) | AU626185B2 (es) |
BR (1) | BR9006234A (es) |
CA (1) | CA2031808C (es) |
DE (1) | DE69014853T2 (es) |
ES (1) | ES2067637T3 (es) |
PL (1) | PL288122A1 (es) |
RU (1) | RU2124391C1 (es) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH078926B2 (ja) * | 1989-12-07 | 1995-02-01 | ダイキン工業株式会社 | ポリテトラフルオロエチレン複層多孔膜の製造方法 |
CA2074349C (en) * | 1991-07-23 | 2004-04-20 | Shinji Tamaru | Polytetrafluoroethylene porous film and preparation and use thereof |
JPH07507014A (ja) * | 1992-03-13 | 1995-08-03 | アトリウム メディカル コーポレイション | 制御された多孔度の膨張ポリテトラフルオロエチレン製品及び二次加工 |
AT399882B (de) * | 1993-11-03 | 1995-08-25 | Chemiefaser Lenzing Ag | Monoaxial verstreckter formkörper aus polytetrafluorethylen und verfahren zu seiner herstellung |
DE4436495A1 (de) * | 1994-10-12 | 1996-04-18 | Gore W L & Ass Gmbh | Verfahren zur Abdichtung von Schuhen im Sohlenbereich |
DE19544912A1 (de) * | 1995-12-01 | 1997-06-05 | Gore W L & Ass Gmbh | PTFE-Körper aus mikroporösem Polytetrafluorethylen mit Füllstoff und Verfahren zu dessen Herstellung |
RU2203685C2 (ru) * | 2001-06-26 | 2003-05-10 | Закрытое акционерное общество "Научно-производственный комплекс "Экофлон" | Имплантат для восстановительной хирургии |
AU2002359432A1 (en) * | 2001-11-21 | 2003-06-10 | Porex Corporation | Discrete hydrophilic-hydrophobic porous materials and methods for making the same |
SE526237C2 (sv) * | 2003-12-23 | 2005-08-02 | Tetra Laval Holdings & Finance | Metod och anordning för att förse ett substrat med ett beläggningsskikt av ett polymert material |
US7524445B2 (en) * | 2004-12-31 | 2009-04-28 | Boston Scientific Scimed, Inc. | Method for making ePTFE and structure containing such ePTFE, such as a vascular graft |
JP5204384B2 (ja) * | 2006-05-19 | 2013-06-05 | 富士フイルム株式会社 | 結晶性ポリマー微孔性膜とその製造方法、および濾過用フィルター |
JP5160984B2 (ja) * | 2007-07-18 | 2013-03-13 | 日東電工株式会社 | 防水通音膜、防水通音膜の製造方法およびそれを用いた電気製品 |
JP5658860B2 (ja) * | 2008-05-12 | 2015-01-28 | 日東電工株式会社 | ポリテトラフルオロエチレン多孔質膜およびその製造方法ならびに濾材 |
US20100086767A1 (en) * | 2008-10-06 | 2010-04-08 | General Electric Company | Processes For Producing Multilayer Polytetrafluoroethylene Articles And Articles Formed Therefrom |
US8540801B2 (en) * | 2008-11-21 | 2013-09-24 | 3M Innovative Properties Company | Microporous membrane and method for forming |
CN101967694B (zh) * | 2010-09-21 | 2012-04-11 | 浙江格尔泰斯环保特材科技有限公司 | 聚四氟乙烯纤维的制造方法 |
JP5367058B2 (ja) * | 2010-12-21 | 2013-12-11 | ダイキン工業株式会社 | 延伸材料 |
JP2013101776A (ja) * | 2011-11-07 | 2013-05-23 | Nitto Denko Corp | 絶縁層被覆電線 |
CN103285747B (zh) * | 2013-04-11 | 2015-01-07 | 安吉县盛丰玻璃纤维有限公司 | 一种过滤用立体ptfe微孔膜及其制备方法 |
CN103224019B (zh) * | 2013-04-24 | 2015-05-27 | 哈尔滨飞机工业集团有限责任公司 | 一种直升机座舱罩风挡玻璃定位垫的制造方法 |
JP2015182227A (ja) * | 2014-03-20 | 2015-10-22 | 日本碍子株式会社 | ハニカム成形体の製造方法およびハニカム構造体の製造方法 |
CN105983352B (zh) * | 2015-02-16 | 2018-05-15 | 上海灵氟隆新材料科技有限公司 | 一种高通量厚型聚四氟乙烯膜及其制备方法 |
US10953574B2 (en) * | 2016-12-09 | 2021-03-23 | 3M Innovative Properties Company | Polymeric multilayer film |
CN108434862A (zh) * | 2018-03-06 | 2018-08-24 | 深圳市中建南方环境股份有限公司 | 一种抗酸碱可清洗滤料的制备方法 |
CN109574148A (zh) * | 2018-12-28 | 2019-04-05 | 广州市世来至福科技有限公司 | 净水过滤设备及方法 |
CN109647217A (zh) * | 2018-12-28 | 2019-04-19 | 广州市世来至福科技有限公司 | 柔性陶瓷膜及其制备方法和应用 |
CN109694133B (zh) * | 2019-02-28 | 2021-10-29 | 广州市世来至福科技有限公司 | 废水处理方法及其采用的十字流膜生物反应器超滤系统 |
CN110982203B (zh) * | 2019-12-19 | 2021-11-12 | 施柏德(厦门)科技有限公司 | 一种ptfe多孔材料、制备方法及其制品与应用 |
CN112023715A (zh) * | 2020-08-26 | 2020-12-04 | 北京中科沃特膜科技有限公司 | 一种高孔隙率的聚四氟乙烯中空纤维膜制备方法 |
CN112549406A (zh) * | 2020-11-23 | 2021-03-26 | 德清新源恒塑料科技有限公司 | 一种高效率聚四氟乙烯挤出板设备 |
CN113910643A (zh) * | 2021-10-08 | 2022-01-11 | 泰州市晨光塑业有限公司 | 一种光滑防粘特氟龙活化膜生产方法及系统 |
CN116063809A (zh) * | 2021-11-01 | 2023-05-05 | 中国石油化工股份有限公司 | 高透气性除菌用聚四氟乙烯纤维膜材料及其制备方法和应用 |
CN115850888A (zh) * | 2022-12-22 | 2023-03-28 | 广东生益科技股份有限公司 | 一种含氟树脂基组合物及其应用 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2142784A1 (en) * | 1971-06-25 | 1973-02-02 | Viennot Sa | Ptfe tube - with lining consisting of mixt of ptfe and electrically conducting material |
US4385093A (en) * | 1980-11-06 | 1983-05-24 | W. L. Gore & Associates, Inc. | Multi-component, highly porous, high strength PTFE article and method for manufacturing same |
JPS58145735A (ja) * | 1982-02-22 | 1983-08-30 | Daikin Ind Ltd | ポリテトラフルオロエチレン多孔体の製造方法 |
JPS60181289A (ja) * | 1984-02-27 | 1985-09-14 | Japan Goatetsukusu Kk | ガス拡散電極用材料 |
US4863604A (en) * | 1987-02-05 | 1989-09-05 | Parker-Hannifin Corporation | Microporous asymmetric polyfluorocarbon membranes |
-
1990
- 1990-12-06 KR KR1019900019991A patent/KR0150642B1/ko not_active IP Right Cessation
- 1990-12-06 EP EP90123480A patent/EP0437721B1/en not_active Expired - Lifetime
- 1990-12-06 PL PL28812290A patent/PL288122A1/xx unknown
- 1990-12-06 RU SU4894025A patent/RU2124391C1/ru active
- 1990-12-06 ES ES90123480T patent/ES2067637T3/es not_active Expired - Lifetime
- 1990-12-06 DE DE69014853T patent/DE69014853T2/de not_active Expired - Fee Related
- 1990-12-06 AU AU67845/90A patent/AU626185B2/en not_active Ceased
- 1990-12-07 CA CA002031808A patent/CA2031808C/en not_active Expired - Lifetime
- 1990-12-07 BR BR909006234A patent/BR9006234A/pt unknown
- 1990-12-07 CN CN90110118A patent/CN1029201C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
PL288122A1 (en) | 1991-08-26 |
KR0150642B1 (ko) | 1998-10-01 |
CN1029201C (zh) | 1995-07-05 |
EP0437721B1 (en) | 1994-12-07 |
BR9006234A (pt) | 1991-09-24 |
DE69014853T2 (de) | 1995-05-04 |
CA2031808C (en) | 2002-01-22 |
AU626185B2 (en) | 1992-07-23 |
RU2124391C1 (ru) | 1999-01-10 |
KR910011467A (ko) | 1991-08-07 |
CN1052797A (zh) | 1991-07-10 |
CA2031808A1 (en) | 1991-06-08 |
EP0437721A1 (en) | 1991-07-24 |
AU6784590A (en) | 1991-06-13 |
DE69014853D1 (de) | 1995-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2067637T3 (es) | Procedimiento para producir una multicapa de membrana porosa de politetrafluoroetileno y estructura de multicapa de politetrafluoroetileno semisinterizada. | |
ES2075123T3 (es) | Procedimiento para producir una membrana multicapa porosa de politetrafluoroetileno. | |
ATE164026T1 (de) | Extrudierte kondensatorelektrode und herstellungsverfahren. | |
DE3850984D1 (de) | Metallisierbare Mehrschichtfolie, ihre Herstellung und ihre Verwendung. | |
EP0037836A4 (en) | POLYVINYLIDENE FLUORIDE RESIN HOLLOW FILAMENT MICROFILTER AND PROCESS FOR PRODUCING THE SAME. | |
FR2364107A1 (fr) | Tubes microporeux et procede de fabrication de tels tubes | |
ES274272U (es) | Placa multiple con nervios | |
ES2159646T3 (es) | Filtro, aparato que contiene el filtro y metodo de utilizacion del aparato. | |
ES2058701T3 (es) | Membrana y procedimiento de separacion. | |
HU902565D0 (en) | Process for manufacturing ceramic material and metal combinations | |
ATE121868T1 (de) | Gasdichte bipolare bleisäurebatterie. | |
ATE122675T1 (de) | Stabile salze von 5,10- methylentetrahydrofolsäure. | |
JPS5214683A (en) | Process for preparing a laminate | |
ES531279A0 (es) | Procedimiento para la produccion de un material laminar de capas multiples | |
IT7848190A0 (it) | Perfezionamento nei procedimenti per la produzione dei peracidi | |
JPS52128888A (en) | Separation by membrane | |
IT986670B (it) | Procedimento perfezionato per ini bire la formazione di composti se condari indesiderati nella solfona zione solfatazione di composti organici | |
ATA818873A (de) | Verfahren zur herstellung von neuen indolo(2,3-c)chinolinen, deren n-oxiden und salzen sowie von optischen isomeren davon | |
CN214096003U (zh) | 远距离便携式激光测距装置 | |
JPS5215586A (en) | Composite materials partly reinforced with titanium shims | |
ES2066018T3 (es) | Composiciones con dicloromonofluoroetanos. | |
IT1136898B (it) | Catodo e cella elettrolitica e procedimento per la produzione del cloro e di idrossido alcalino con impiego di tale cella | |
JPS5411080A (en) | Separating support | |
DE69421153T2 (de) | Festpolymerelektrolyt, batterie und festkörperdoppelschichtkondensator diesen verwendend und verfahren zu deren herstellung | |
JPS53126070A (en) | Production of porous film mainly consisting of pectin |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 437721 Country of ref document: ES |