CA2138681C - Polyvinylidene fluoride membrane - Google Patents
Polyvinylidene fluoride membrane Download PDFInfo
- Publication number
- CA2138681C CA2138681C CA002138681A CA2138681A CA2138681C CA 2138681 C CA2138681 C CA 2138681C CA 002138681 A CA002138681 A CA 002138681A CA 2138681 A CA2138681 A CA 2138681A CA 2138681 C CA2138681 C CA 2138681C
- Authority
- CA
- Canada
- Prior art keywords
- membrane
- psi
- polymer
- viruses
- casting solution
- 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 claims abstract description 373
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 39
- 239000002033 PVDF binder Substances 0.000 title claims abstract description 38
- 238000005266 casting Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 230000009467 reduction Effects 0.000 claims abstract description 42
- 241001515965 unidentified phage Species 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 238000003892 spreading Methods 0.000 claims abstract description 4
- 230000007480 spreading Effects 0.000 claims abstract description 4
- 241000700605 Viruses Species 0.000 claims description 51
- 238000001914 filtration Methods 0.000 claims description 33
- 239000012530 fluid Substances 0.000 claims description 22
- 239000000178 monomer Substances 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 20
- 230000005855 radiation Effects 0.000 claims description 17
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 15
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 10
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 10
- 102000004169 proteins and genes Human genes 0.000 claims description 10
- 108090000623 proteins and genes Proteins 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 238000010894 electron beam technology Methods 0.000 claims description 5
- 229940057847 polyethylene glycol 600 Drugs 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 3
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 2
- 238000009877 rendering Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 76
- 239000011148 porous material Substances 0.000 description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- 229910001868 water Inorganic materials 0.000 description 31
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 24
- 238000010998 test method Methods 0.000 description 12
- 238000000108 ultra-filtration Methods 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000003431 cross linking reagent Substances 0.000 description 10
- 238000009736 wetting Methods 0.000 description 10
- -1 n-octanol Chemical class 0.000 description 9
- 239000012071 phase Substances 0.000 description 9
- 229920006395 saturated elastomer Polymers 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 8
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 8
- 230000007547 defect Effects 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000007873 sieving Methods 0.000 description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229940113088 dimethylacetamide Drugs 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000000144 pharmacologic effect Effects 0.000 description 3
- 239000008363 phosphate buffer Substances 0.000 description 3
- 239000002953 phosphate buffered saline Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 241000283707 Capra Species 0.000 description 2
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009295 crossflow filtration Methods 0.000 description 2
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 208000006454 hepatitis Diseases 0.000 description 2
- 231100000283 hepatitis Toxicity 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 150000003923 2,5-pyrrolediones Chemical class 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 208000030507 AIDS Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 241000991587 Enterovirus C Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 241000125945 Protoparvovirus Species 0.000 description 1
- CIOAGBVUUVVLOB-NJFSPNSNSA-N Strontium-90 Chemical compound [90Sr] CIOAGBVUUVVLOB-NJFSPNSNSA-N 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000000611 regression analysis Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006403 short-term memory Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- 125000005590 trimellitic acid group Chemical class 0.000 description 1
- 241000701161 unidentified adenovirus Species 0.000 description 1
- 241001529453 unidentified herpesvirus Species 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
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
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0095—Drying
-
- 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
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
- B01D67/00931—Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting
-
- 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
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- 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
- B01D2323/12—Specific ratios of components used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/30—Cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/38—Graft polymerization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/18—Membrane materials having mixed charged functional groups
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Dispersion Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Graft Or Block Polymers (AREA)
- External Artificial Organs (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17375593A | 1993-12-22 | 1993-12-22 | |
| US08/173,755 | 1993-12-22 | ||
| US08/327,622 | 1994-10-24 | ||
| US08/327,622 US5736051A (en) | 1993-12-22 | 1994-10-24 | Polyvinylidene fluoride membrane and method for removing viruses from solutions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2138681A1 CA2138681A1 (en) | 1995-06-23 |
| CA2138681C true CA2138681C (en) | 2001-08-14 |
Family
ID=26869498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002138681A Expired - Lifetime CA2138681C (en) | 1993-12-22 | 1994-12-21 | Polyvinylidene fluoride membrane |
Country Status (11)
| Country | Link |
|---|---|
| JP (2) | JP3178772B2 (it) |
| CA (1) | CA2138681C (it) |
| CH (1) | CH688612A5 (it) |
| DE (1) | DE4445973B4 (it) |
| DK (1) | DK144294A (it) |
| ES (1) | ES2109146B1 (it) |
| FR (1) | FR2713951B1 (it) |
| GB (1) | GB2285010B (it) |
| IT (1) | IT1267191B1 (it) |
| NL (1) | NL9402134A (it) |
| SE (1) | SE510792C2 (it) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063256A4 (en) * | 1998-03-16 | 2003-03-26 | Asahi Chemical Ind | MICROPOROUS FILM |
| TW581709B (en) | 1999-10-22 | 2004-04-01 | Asahi Kasei Corp | Heat-resistant microporous film |
| WO2003026779A1 (en) | 2001-08-01 | 2003-04-03 | Asahi Kasei Kabushiki Kaisha | Multilayer microporous film |
| AU2003301399B2 (en) | 2002-10-18 | 2006-07-06 | Asahi Kasei Medical Co., Ltd. | Microporous hydrophilic membrane |
| EP1968792B1 (en) * | 2005-12-30 | 2013-12-11 | 3M Innovative Properties Company | Functionalized substrates |
| ITMI20060601A1 (it) | 2006-03-30 | 2007-09-30 | Gvs Spa | Procedimento per la preparazione di membrane microporose in polivinilidenfluoruro pvdf |
| JP5026888B2 (ja) * | 2007-08-14 | 2012-09-19 | 日東電工株式会社 | 表面に親水性ポリマーを有するフッ素樹脂成形体およびその製造方法 |
| CN102159305B (zh) | 2008-09-19 | 2015-08-19 | 东丽株式会社 | 分离膜及其制造方法 |
| FR3089226B1 (fr) * | 2018-11-30 | 2021-08-06 | Arkema France | Procédé de préparation de films de polymère fluoré poreux |
| CN114028956B (zh) * | 2021-11-18 | 2023-05-26 | 浙江机电职业技术学院 | 反渗透膜及其制备方法和应用 |
| CN119425396B (zh) * | 2023-07-28 | 2025-10-24 | 中国科学院大连化学物理研究所 | 一种正电性的异质膜及制备与应用 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA792326B (en) | 1978-05-15 | 1980-06-25 | Pall Corp | Process for preparing polyamide membrane filter media and product |
| FR2600265B1 (fr) * | 1986-06-20 | 1991-09-06 | Rhone Poulenc Rech | Membranes semi-permeables sechables et hydrophiles a base de polyfluorure de vinylidene |
| US5019260A (en) * | 1986-12-23 | 1991-05-28 | Pall Corporation | Filtration media with low protein adsorbability |
| JP2898665B2 (ja) * | 1989-09-28 | 1999-06-02 | テルモ株式会社 | 血漿分離膜およびそれを用いた血漿分離器 |
| US5079272A (en) * | 1989-11-30 | 1992-01-07 | Millipore Corporation | Porous membrane formed from interpenetrating polymer network having hydrophilic surface |
| US5198505A (en) * | 1991-04-11 | 1993-03-30 | Pall Corporation | Uniform polyvinylidene difluoride membranes |
| DE69322776T2 (de) * | 1992-05-06 | 1999-08-05 | Costar Corp., Cambridge, Mass. | Verfahren zur herstellung einer mikroporösen polyvinylidenfluorid-membran |
-
1994
- 1994-12-01 GB GB9424308A patent/GB2285010B/en not_active Expired - Lifetime
- 1994-12-07 IT IT94TO000998A patent/IT1267191B1/it active IP Right Grant
- 1994-12-07 SE SE9404249A patent/SE510792C2/sv not_active IP Right Cessation
- 1994-12-13 ES ES09402529A patent/ES2109146B1/es not_active Expired - Fee Related
- 1994-12-15 NL NL9402134A patent/NL9402134A/nl active Search and Examination
- 1994-12-19 DK DK144294A patent/DK144294A/da not_active Application Discontinuation
- 1994-12-20 FR FR9415340A patent/FR2713951B1/fr not_active Expired - Lifetime
- 1994-12-21 CA CA002138681A patent/CA2138681C/en not_active Expired - Lifetime
- 1994-12-21 CH CH03856/94A patent/CH688612A5/fr not_active IP Right Cessation
- 1994-12-22 JP JP33615794A patent/JP3178772B2/ja not_active Expired - Lifetime
- 1994-12-22 DE DE4445973A patent/DE4445973B4/de not_active Expired - Lifetime
-
2000
- 2000-10-24 JP JP2000324381A patent/JP3443735B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4445973B4 (de) | 2006-06-29 |
| ITTO940998A1 (it) | 1996-06-07 |
| ES2109146B1 (es) | 1998-08-16 |
| DK144294A (da) | 1995-06-23 |
| SE510792C2 (sv) | 1999-06-21 |
| GB2285010A (en) | 1995-06-28 |
| GB2285010B (en) | 1997-11-19 |
| FR2713951A1 (fr) | 1995-06-23 |
| IT1267191B1 (it) | 1997-01-28 |
| CA2138681A1 (en) | 1995-06-23 |
| NL9402134A (nl) | 1995-07-17 |
| ES2109146A1 (es) | 1998-01-01 |
| JP2001187325A (ja) | 2001-07-10 |
| FR2713951B1 (fr) | 1996-12-06 |
| ITTO940998A0 (it) | 1994-12-07 |
| JPH07265674A (ja) | 1995-10-17 |
| SE9404249L (sv) | 1995-06-23 |
| GB9424308D0 (en) | 1995-01-18 |
| DE4445973A1 (de) | 1995-06-29 |
| SE9404249D0 (sv) | 1994-12-07 |
| JP3443735B2 (ja) | 2003-09-08 |
| JP3178772B2 (ja) | 2001-06-25 |
| CH688612A5 (fr) | 1997-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5736051A (en) | Polyvinylidene fluoride membrane and method for removing viruses from solutions | |
| CA2138681C (en) | Polyvinylidene fluoride membrane | |
| CN1819867B (zh) | 膜的后处理 | |
| JP6385444B2 (ja) | 多孔質膜 | |
| JP2559533B2 (ja) | 蛋白質に対する吸着力が低い濾過媒体 | |
| US5236588A (en) | Asymmetric polymer membrane and preparation thereof | |
| EP0626193A1 (en) | Positively charged polyvinylidene fluoride membrane | |
| US5788862A (en) | Filtration medium | |
| JP2004532724A (ja) | 新規なコート膜およびその他の製品 | |
| AU2004232679A1 (en) | Hydrophilic membrane and process for making the same | |
| KR20210011372A (ko) | 다공질 중공사막 | |
| CN114653222A (zh) | 一种低非特异性吸附的除病毒滤膜及其制备方法 | |
| JP2003504190A (ja) | ポリビニリデンジフルオリド膜およびこのような膜を作製するための方法 | |
| EP0361814A2 (en) | Fluid treatment system having low affinity for proteinaceous materials | |
| WO2002062880A2 (en) | Asymmetric hydrophilic membrane by grafting | |
| CN113646067A (zh) | 多孔膜 | |
| JP6030751B2 (ja) | 乾燥蒸気処理後の試験容易性が向上したフィルタエレメント | |
| JP3132415B2 (ja) | 親水化透析膜 | |
| EP1218093B1 (en) | Virus removal devices | |
| CN105713224B (zh) | 从细胞培养基中去除微生物 | |
| EP0682978A1 (en) | Hydrophilic PTFE membrane | |
| CN116212657A (zh) | 一种低特异性吸附的除病毒超滤膜的制备方法和除病毒超滤设备 | |
| JP2024168853A (ja) | 多孔質膜 | |
| EP4721845A1 (en) | Porous membrane | |
| JPH03131329A (ja) | 改質スルホン化ポリオレフィン多孔質膜およびその製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20141222 |