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1. (WO2018104498) HOLLOW FIBRE MEMBRANE WITH IMPROVED SEPARATING EFFICIENCY, AND PRODUCTION OF A HOLLOW FIBRE MEMBRANE WITH IMPROVED SEPARATING EFFICIENCY
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Pub. No.: WO/2018/104498 International Application No.: PCT/EP2017/081955
Publication Date: 14.06.2018 International Filing Date: 08.12.2017
IPC:
B01D 65/02 (2006.01) ,B01D 67/00 (2006.01) ,B01D 71/44 (2006.01) ,B01D 71/68 (2006.01) ,B01D 69/02 (2006.01) ,B01D 69/08 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
65
Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02
Membrane cleaning or sterilisation
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
67
Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
44
Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42177
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
66
Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
68
Polysulfones; Polyethersulfones
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02
characterised by their properties
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
08
Hollow fibre membranes
Applicants:
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH [DE/DE]; Else-Kröner-Strasse 1 61352 Bad Homburg, DE
Inventors:
KELLER, Torsten; DE
PAUL, Michael; DE
SANDER, Roland; DE
Agent:
RICKER, Mathias; Wallinger Ricker Schlotter Tostmann Patent- und Rechtsanwälte Partnerschaft mbB Zweibrückenstraße 5-7 80331 Munich, DE
Priority Data:
10 2016 224 627.509.12.2016DE
Title (EN) HOLLOW FIBRE MEMBRANE WITH IMPROVED SEPARATING EFFICIENCY, AND PRODUCTION OF A HOLLOW FIBRE MEMBRANE WITH IMPROVED SEPARATING EFFICIENCY
(FR) MEMBRANE À FIBRES CREUSES AYANT DE MEILLEURES PERFORMANCES DE SÉPARATION ET FABRICATION D'UNE MEMBRANE À FIBRES CREUSES AYANT DE MEILLEURES PERFORMANCES DE SÉPARATION
(DE) HOHLFASERMEMBRAN MIT VERBESSERTER TRENNLEISTUNG UND HERSTELLUNG EINER HOHLFASERMEMBRAN MIT VERBESSERTER TRENNLEISTUNG
Abstract:
(EN) The invention relates to a method for producing a hollow fibre membrane bundle from a plurality of polysulphone-based and PVP-based hollow fibre membranes, involving: providing a spinning solution comprising a material based on polysulphone, particularly polysulphone, a polymer based on vinylpyrrolidone and particularly polyvinylpyrrolidone, an aprotic solvent, particularly dimethylacetamide; providing a coagulation liquid comprising water and an aprotic solvent, particularly dimethylacetamide; coextruding the spinning solution and the coagulation liquid through a concentric annular gap nozzle to form a hollow spun filament, the cavity of said spun filament being filled with coextruded coagulation liquid; passing the spun filament through a precipitation gap; introducing the spun filament into a precipitation bath substantially comprising water, in order to obtain a hollow fibre membrane; passing the hollow fibre membranes through at least one rinsing bath and drying the resulting hollow fibre membrane; arranging the resulting hollow fibre membrane to form a hollow fibre membrane bundle; and treating the hollow fibre membrane bundle with steam.
(FR) L'invention concerne un procédé pour fabriquer un faisceau de membranes à fibres creuses à partir d'une pluralité de membranes à fibres creuses à base de polysulfone et de PVP, qui comprend la préparation d'une solution de filage comprenant une substance à base de polysulfone, en particulier du polysulfone, un polymère à base de vinylpyrrolidone, en particulier de la polyvinylpyrrolidone, un solvant aprotique, en particulier du diméthylacétamide, la préparation d'un liquide de coagulation, comprenant de l'eau et un solvant aprotique, en particulier du diméthylacétamide, la coextrusion de la solution de filage et du liquide de coagulation au moyen d'une buse à fente annulaire concentrique pour produire un filament creux, la cavité du filament étant remplie de liquide de coagulation coextrudé, le guidage du filament à travers une fente de précipitation, l'introduction du filament dans un bain de précipitation, comprenant essentiellement de l'eau, afin d'obtenir une membrane à fibres creuses, le guidage des membranes à fibres creuses dans au moins un bain de rinçage et le séchage de la membrane à fibres creuses obtenues, l'agencement de la membrane à fibres creuses obtenues en un faisceau de membranes à fibres creuses, et le traitement du faisceau de membranes à fibres creuses avec de la vapeur d'eau.
(DE) Die Erfindung betrifft ein Verfahren zum Herstellen eines Hohlfasermembranbündels aus einer Vielzahl von auf Polysulfon und PVP basierenden Hohlfasermembranen, welche das Bereitstellen einer Spinnlösung, umfassend ein Material auf Polysulfonbasis, insbesondere Polysulfon, ein Polymer auf Basis von Vinylpyrrolidon, insbesondere Polyvinylpyrrolidon, einem aprotischen Lösungsmittel, insbesondere Dimethylacetamid, das Bereitstellen einer Koagulationsflüssigkeit, umfassend Wasser und ein aprotisches Lösungsmittel, insbesondere Dimethylacetamid, das Koextrusion der Spinnlösung und der Koagulationsflüssigkeit durch eine konzentrische Ringspaltdüse zu einem hohlen Spinnfaden, wobei der Hohlraum des Spinnfadens mit koextrudierter Koagulationsflüssigkeit befüllt ist, das Durchleiten des Spinnfadens durch einen Fällspalt, das Einleiten des Spinnfadens in ein Fällbad, umfassend im Wesentlichen Wasser, um eine Hohlfasermembran zu erhalten, das Durchleiten der Hohlfasermembranen durch wenigstens ein Spülbad und Trocknen der erhaltenen Hohlfasermembran, das Anordnen der erhaltenen Hohlfasermembran zu einem Hohlfasermembranbündel, und das Behandeln des Hohlfasermembranbündels mit Wasserdampf, umfasst.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)