WO1995025582A1 - High-flux-dialysemembran aus polyacrylnitril - Google Patents
High-flux-dialysemembran aus polyacrylnitril Download PDFInfo
- Publication number
- WO1995025582A1 WO1995025582A1 PCT/EP1995/000949 EP9500949W WO9525582A1 WO 1995025582 A1 WO1995025582 A1 WO 1995025582A1 EP 9500949 W EP9500949 W EP 9500949W WO 9525582 A1 WO9525582 A1 WO 9525582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- membrane
- membrane according
- copolymer
- water
- 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.)
- Ceased
Links
Classifications
-
- 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
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0011—Casting solutions therefor
-
- 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
- B01D69/08—Hollow fibre 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
- B01D69/08—Hollow fibre membranes
- B01D69/087—Details relating to the spinning process
-
- 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
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
- B01D71/421—Polyacrylonitrile
-
- 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
- B01D71/44—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42
- B01D71/441—Polyvinylpyrrolidone
-
- 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
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/12—Specific ratios of components used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/022—Asymmetric membranes
Definitions
- the invention relates to an asymmetric semipermeable hollow fiber membrane for dialysis and / or ultrafiltration, in particular hemodialysis from a copolymer of acrylonitrile and acrylic ester and an ionic or or ionizable monomer and process for their production.
- a process for the production of hollow fibers from acrylonitrile polymers is known from US Pat. No. 4,181,694, an acrylonitrile polymer which consists of at least 60% by weight of acrylonitrile units in an aqueous 65 to 95% by weight nitric acid (at 0 to 5 ° C) is dissolved in order to obtain a spinning solution. This solution is then extruded through spinnerets and at the same time an internal coagulation liquid is introduced. According to this process, hollow fibers are obtained which consist of an outer layer with a porous one Structure, a middle layer with so-called caverns, and an inner layer with a porous structure. These are double asymmetrical membranes with skin on both sides. Caverns here mean "relatively large" holes in the membrane wall.
- DE-PS 27 40 252 claims dried porous membranes with acrylonitrile polymer units, which consist of a carrier layer and a surface layer on both sides. A method for producing these membranes, which have a skin on both outer surfaces, is also claimed.
- U.S. Patent 4,545,910 claims membranes that have the performance data of a conventional ultrafiltration membrane.
- the material for the membrane can be selected from a variety of materials, including also made of polyacrylonitrile compounds.
- US Pat. No. 5,039,420 claims a membrane which consists of a copolymer of acrylonitrile and a C2 ⁇ C4-hydroxyalkyl ester of methacrylic acid as comonomers.
- the membranes produced by the abovementioned processes have only unsatisfactory values for the biocompatibility, for example in the release of histamine or in the generation of bradykinin.
- European application 0 547 471 describes membranes and processes for their production which are distinguished by very good values for bicompatibility, for example in the release of histamine or in the generation of bradykinin.
- a wet spinning process is used to produce these membranes, the starting polymer being a copolymer composed of 90.50 to 95.00% by weight of acrylonitrile, 4.99 to 8.60% by weight of acrylic ester and 0.01 to 0.90% by weight of the ionic or ionizable monomers is used, characterized in that the
- the object of the invention is to provide a membrane which can be used for dialysis and / or ultrafiltration and which does not adsorb any .beta.2-microglobulin during its use as a hemodialysis membrane and does not show any significant change in the sieving characteristics with respect to .beta.2-microglobulin even with prolonged use. showing no back filtration during use, and the ultrafiltration rate w äßrige albumin Citrochromaims on "has a favorable ratio of the ultrafiltration rate wetter.
- the object of the invention is furthermore to a to provide a corresponding method for producing such membranes.
- an asymmetrical semipermeable membrane for dialysis and / or ultrafiltration made from a copolymer of acrylonitrile and acrylate and an ionic or ionizable monomer in the form of a hollow thread with a separating layer inside the hollow thread, the copolymer being composed is composed of 90.50-95.00% by weight of acrylonitrile, 4.99 to 8.60% by weight of acrylic ester and 0.01 to 0.90% by weight of the ionic or ionizable monomer, characterized in that the membrane is up to 5% based contains on copolymer on polyvinyl pyrrolidone in finely divided form.
- the membrane preferably contains at most 1.0% by weight of polyvinylpyrrolidone.
- the membrane is further characterized by a sieving coefficient for ⁇ 2-microglobulin of at least 0.3, in particular at least 0.5, preferably at least 0.7.
- UFR water UFR aqueous solution albumin / citrochromium ⁇ ' : 1 from. This ratio is preferably 2: 1 to 7: 1, in particular 3: 1 to 5: 1.
- a wet spinning process is used to produce this membrane, a copolymer composed of 90.50 to 95.00% by weight of acrylonitrile, 4.99 to 8.60% by weight of acrylic ester and 0.01 to 0.90% by weight of the ionic or ionizable monomers - is used, characterized in that the
- a membrane produced in this way not only has excellent biocompatibility, that is to say no bradykinin generation or histamine release takes place, but also a high sieving coefficient for ⁇ 2-microglobulin, which does not change, or at most insignificantly, even with prolonged use. It was also particularly surprising that membranes are accessible by means of the invention which have a favorable, ie a low ratio of ultrafiltration rate with water to the ultrafiltration rate aqueous solution albumin / cytrochrome C.
- the measurement of the ultrafiltration rate is a method familiar to the person skilled in the art to characterize hollow fiber membranes. It has the dimension ml / (m hmmHg).
- aqueous phosphate-buffered saline solution containing 50 g of albumin, 0.1 g of cytrochrome C and 0.03 g of sodium dithionite per liter of solution is used to determine the ultrafiltration rate of aqueous albumin / cytrochrome solution.
- Bovine serum albumin (BSA) was used as the albumin.
- the membrane does not build up, i.e. that there are no harmful substances inside the hollow thread, i.e. deposit on the skin, which acts as a separating layer and is located in the interior of the hollow thread, the lumen of the hollow thread is not narrowed, so that the flow through the lumen of the entire hollow thread is practically constant during operation, i.e. remains very even.
- Polyvinyl pyrrolidone is a known polymer that is commercially available. More details about this polymer include the ISP PVP Polyvinylyrrolidone Polymers from ISP International Specialty Products 1361 Alps Road, Wayne, NJ 07470 USA.
- the determination of the sieving coefficient is in itself a method familiar to the person skilled in the art and can be carried out in various ways. In the context of the invention, the sieving coefficient was carried out on the membranes by the following method.
- a human plasma with about 40 mg / 1 ß-microglobulin content was used as the test solution. Modules with an area between 250 and 400 cm were used. The blood side flow was adjusted to 5 ml / min, the filtrate flow to 0.25 ml / min. The temperature was 37 ° C. Work was carried out with recirculation and return of the filtrate to the pool. The measurement took place after 60 minutes. The evaluation was carried out according to the following formula:
- the spinning bath is generally circulated during spinning. It goes without saying that the concentration ratios of the precipitation bath are kept constant by metering in or partially removing the individual components such as solvent, water and glycerol, that is to say that the selected concentration ratios of the precipitation bath remain largely unchanged during spinning. Since polyvinylpyrrolidone also gets into the coagulation bath during spinning, care must be taken to ensure that the coagulation bath does not become too strong Enriched polyvinyl pyrrolidone. This can be done, for example, by removing the circulation stream polyvinylpyrrolidone.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7524356A JPH09510379A (ja) | 1994-03-22 | 1995-03-14 | 高流量ポリアクリルニトリル透析膜 |
| EP95913112A EP0751818A1 (de) | 1994-03-22 | 1995-03-14 | High-flux-dialysemembran aus polyacrylnitril |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4409890.1 | 1994-03-22 | ||
| DE4409890 | 1994-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995025582A1 true WO1995025582A1 (de) | 1995-09-28 |
Family
ID=6513528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1995/000949 Ceased WO1995025582A1 (de) | 1994-03-22 | 1995-03-14 | High-flux-dialysemembran aus polyacrylnitril |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0751818A1 (de) |
| JP (1) | JPH09510379A (de) |
| CN (1) | CN1145593A (de) |
| WO (1) | WO1995025582A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1129738A4 (de) * | 1998-11-09 | 2003-08-06 | Asahi Medical Co | Blutreinigungsvorrichtung |
| EP1177829A3 (de) * | 2000-06-27 | 2003-10-01 | Gkss-Forschungszentrum Geesthacht Gmbh | Mit Blut und Gewebe verträgliche Membranen aus P(AN/NVP)-Misch-polymeren und deren Anwendung im medizinischen Bereich |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446843C (zh) * | 2007-02-01 | 2008-12-31 | 江南大学 | 一种具有抗凝血性能的丙烯酸酯类共聚物膜的制备方法 |
| CN104888625A (zh) * | 2015-05-20 | 2015-09-09 | 苏州市贝克生物科技有限公司 | 一种聚丙烯腈血液透析膜及其制备方法 |
| CN109647225B (zh) * | 2019-01-22 | 2021-07-20 | 东华大学 | 一种含有定向毒素去除通道的纳米纤维复合血液透析膜及其制备 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4871378A (de) * | 1971-12-27 | 1973-09-27 | ||
| JPS5892410A (ja) * | 1981-11-30 | 1983-06-01 | Asahi Medical Kk | 高透過性半透膜 |
| EP0305787A1 (de) * | 1987-08-31 | 1989-03-08 | GAMBRO DIALYSATOREN GMBH & CO. KG | Verfahren zur Herstellung einer permselektiven, asymmetrischen Membrane, verwendbar in der Hämodialyse und die so hergestellten Membrane |
| EP0547471A1 (de) * | 1991-12-14 | 1993-06-23 | Akzo Nobel N.V. | Polyacrylnitrilmembran |
| EP0568045A1 (de) * | 1992-04-29 | 1993-11-03 | Kuraray Co., Ltd. | Hohlfasermembran auf Polysulfonbasis und Verfahren zu ihrer Herstellung |
| EP0636404A1 (de) * | 1993-07-30 | 1995-02-01 | Bayer Ag | Membranen aus Acrylnitril-Copolymeren, Verfahren zu ihrer Herstellung und ihre Verwendung |
-
1995
- 1995-03-14 WO PCT/EP1995/000949 patent/WO1995025582A1/de not_active Ceased
- 1995-03-14 EP EP95913112A patent/EP0751818A1/de not_active Withdrawn
- 1995-03-14 JP JP7524356A patent/JPH09510379A/ja active Pending
- 1995-03-14 CN CN95192204.1A patent/CN1145593A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4871378A (de) * | 1971-12-27 | 1973-09-27 | ||
| JPS5892410A (ja) * | 1981-11-30 | 1983-06-01 | Asahi Medical Kk | 高透過性半透膜 |
| EP0305787A1 (de) * | 1987-08-31 | 1989-03-08 | GAMBRO DIALYSATOREN GMBH & CO. KG | Verfahren zur Herstellung einer permselektiven, asymmetrischen Membrane, verwendbar in der Hämodialyse und die so hergestellten Membrane |
| EP0547471A1 (de) * | 1991-12-14 | 1993-06-23 | Akzo Nobel N.V. | Polyacrylnitrilmembran |
| EP0568045A1 (de) * | 1992-04-29 | 1993-11-03 | Kuraray Co., Ltd. | Hohlfasermembran auf Polysulfonbasis und Verfahren zu ihrer Herstellung |
| EP0636404A1 (de) * | 1993-07-30 | 1995-02-01 | Bayer Ag | Membranen aus Acrylnitril-Copolymeren, Verfahren zu ihrer Herstellung und ihre Verwendung |
Non-Patent Citations (4)
| Title |
|---|
| CHEMICAL ABSTRACTS, vol. 100, no. 8, 20 February 1984, Columbus, Ohio, US; abstract no. 56883, "Semipermeable membranes and a module containing the semipermeable membranes" page 331; column 2; * |
| DATABASE WPI Section Ch Week 8328, Derwent World Patents Index; Class A96, AN 83-707629 * |
| DATABASE WPI Week 7351, Derwent World Patents Index; AN 73-79315u * |
| PATENT ABSTRACTS OF JAPAN vol. 7, no. 191 (C - 182) 20 August 1983 (1983-08-20) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1129738A4 (de) * | 1998-11-09 | 2003-08-06 | Asahi Medical Co | Blutreinigungsvorrichtung |
| EP1177829A3 (de) * | 2000-06-27 | 2003-10-01 | Gkss-Forschungszentrum Geesthacht Gmbh | Mit Blut und Gewebe verträgliche Membranen aus P(AN/NVP)-Misch-polymeren und deren Anwendung im medizinischen Bereich |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1145593A (zh) | 1997-03-19 |
| EP0751818A1 (de) | 1997-01-08 |
| JPH09510379A (ja) | 1997-10-21 |
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