SE428221B - Halfiber av cellulosaacetat och sett att framstella den - Google Patents
Halfiber av cellulosaacetat och sett att framstella denInfo
- Publication number
- SE428221B SE428221B SE7807516A SE7807516A SE428221B SE 428221 B SE428221 B SE 428221B SE 7807516 A SE7807516 A SE 7807516A SE 7807516 A SE7807516 A SE 7807516A SE 428221 B SE428221 B SE 428221B
- Authority
- SE
- Sweden
- Prior art keywords
- fibers
- fiber
- cellulose acetate
- range
- weight
- Prior art date
Links
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 title claims description 4
- 239000000835 fiber Substances 0.000 claims abstract description 144
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 51
- 239000000203 mixture Substances 0.000 claims abstract description 47
- 235000011187 glycerol Nutrition 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 210000003734 kidney Anatomy 0.000 claims abstract description 31
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004202 carbamide Substances 0.000 claims abstract description 21
- 239000012510 hollow fiber Substances 0.000 claims abstract description 20
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 19
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 18
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 22
- 238000002074 melt spinning Methods 0.000 claims description 21
- DDRJAANPRJIHGJ-UHFFFAOYSA-N creatinine Chemical compound CN1CC(=O)NC1=N DDRJAANPRJIHGJ-UHFFFAOYSA-N 0.000 claims description 20
- 238000010622 cold drawing Methods 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 17
- 239000008280 blood Substances 0.000 claims description 12
- 210000004369 blood Anatomy 0.000 claims description 12
- 238000001631 haemodialysis Methods 0.000 claims description 11
- 230000000322 hemodialysis Effects 0.000 claims description 11
- 229940109239 creatinine Drugs 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920001747 Cellulose diacetate Polymers 0.000 claims description 4
- FDJOLVPMNUYSCM-UVKKECPRSA-L cobalt(3+);[(2r,3s,4r,5s)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2r)-1-[3-[(2r,3r,4z,7s,9z,12s,13s,14z,17s,18s,19r)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2,7, Chemical compound [Co+3].N#[C-].C1([C@H](CC(N)=O)[C@@]2(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@H]3[C@H]([C@H](O[C@@H]3CO)N3C4=CC(C)=C(C)C=C4N=C3)O)[N-]\C2=C(C)/C([C@H](C\2(C)C)CCC(N)=O)=N/C/2=C\C([C@H]([C@@]/2(CC(N)=O)C)CCC(N)=O)=N\C\2=C(C)/C2=N[C@]1(C)[C@@](C)(CC(N)=O)[C@@H]2CCC(N)=O FDJOLVPMNUYSCM-UVKKECPRSA-L 0.000 claims description 2
- 229940045999 vitamin b 12 Drugs 0.000 claims description 2
- 239000011872 intimate mixture Substances 0.000 claims 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 238000002386 leaching Methods 0.000 description 18
- 239000000126 substance Substances 0.000 description 18
- 238000001816 cooling Methods 0.000 description 16
- 239000012528 membrane Substances 0.000 description 14
- 238000000502 dialysis Methods 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 229920003043 Cellulose fiber Polymers 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001879 gelation Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 3
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 235000010980 cellulose Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229940045136 urea Drugs 0.000 description 3
- 229940116269 uric acid Drugs 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- ZURAKLKIKYCUJU-UHFFFAOYSA-N copper;azane Chemical compound N.[Cu+2] ZURAKLKIKYCUJU-UHFFFAOYSA-N 0.000 description 2
- 238000000578 dry spinning Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 101100298295 Drosophila melanogaster flfl gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000017606 Vaccinium vitis idaea Nutrition 0.000 description 1
- 244000077923 Vaccinium vitis idaea Species 0.000 description 1
- 229930003779 Vitamin B12 Natural products 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- FDJOLVPMNUYSCM-WZHZPDAFSA-L cobalt(3+);[(2r,3s,4r,5s)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2r)-1-[3-[(1r,2r,3r,4z,7s,9z,12s,13s,14z,17s,18s,19r)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2 Chemical compound [Co+3].N#[C-].N([C@@H]([C@]1(C)[N-]\C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C(\C)/C1=N/C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C\C1=N\C([C@H](C1(C)C)CCC(N)=O)=C/1C)[C@@H]2CC(N)=O)=C\1[C@]2(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@H]1[C@@H](O)[C@@H](N2C3=CC(C)=C(C)C=C3N=C2)O[C@@H]1CO FDJOLVPMNUYSCM-WZHZPDAFSA-L 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- -1 glycols Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000051 modifying effect Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920003124 powdered cellulose Polymers 0.000 description 1
- 235000019814 powdered cellulose Nutrition 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011715 vitamin B12 Substances 0.000 description 1
- 235000019163 vitamin B12 Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Classifications
-
- 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
-
- 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
- B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
- B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
-
- 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
- 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
- B01D69/081—Hollow fibre membranes characterised by the fibre diameter
-
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
- D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- External Artificial Organs (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81292977A | 1977-07-05 | 1977-07-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7807516L SE7807516L (sv) | 1979-01-06 |
| SE428221B true SE428221B (sv) | 1983-06-13 |
Family
ID=25211003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7807516A SE428221B (sv) | 1977-07-05 | 1978-07-04 | Halfiber av cellulosaacetat och sett att framstella den |
Country Status (18)
| Country | Link |
|---|---|
| JP (2) | JPS5442420A (de) |
| AT (1) | AT364899B (de) |
| AU (1) | AU519458B2 (de) |
| BE (1) | BE868708A (de) |
| BR (1) | BR7804325A (de) |
| CA (1) | CA1107020A (de) |
| CH (1) | CH632536A5 (de) |
| DD (1) | DD137950A5 (de) |
| DE (1) | DE2827100C2 (de) |
| DK (1) | DK149600C (de) |
| FR (1) | FR2396780A1 (de) |
| GB (1) | GB2000722B (de) |
| IT (1) | IT1107799B (de) |
| MX (1) | MX153159A (de) |
| NL (1) | NL7807225A (de) |
| NO (1) | NO147979C (de) |
| NZ (1) | NZ187610A (de) |
| SE (1) | SE428221B (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1153171A (en) * | 1979-12-17 | 1983-09-06 | David T. Chen | Cellulose semipermeable hollow fibers and method for making same |
| JPS5949806A (ja) * | 1982-09-13 | 1984-03-22 | Teijin Ltd | セルロースエステル系中空糸状分離膜 |
| JPS59199807A (ja) * | 1983-04-20 | 1984-11-13 | Teijin Ltd | 選択透過性セルロ−スエステル系中空繊維の製造方法 |
| JPS59211459A (ja) * | 1983-05-17 | 1984-11-30 | 帝人株式会社 | 血液処理器の滅菌方法 |
| JPS605202A (ja) * | 1983-06-21 | 1985-01-11 | Teijin Ltd | 多孔性セルロ−スエステル系中空繊維およびその製造方法 |
| CA1272139A (en) * | 1984-11-16 | 1990-07-31 | Shoji Mizutani | Fluid separator, hollow fiber to be used for construction thereof and process for preparation of said hollow fibers |
| JPS6343669A (ja) * | 1986-08-08 | 1988-02-24 | 帝人株式会社 | 血液処理器の製造方法 |
| WO2003000966A1 (en) | 2001-06-26 | 2003-01-03 | Toray Industries, Inc. | Thermoplastic cellulose derivative composition and fiber comprising the same |
| WO2013125681A1 (ja) * | 2012-02-24 | 2013-08-29 | 東洋紡株式会社 | 中空糸型半透膜及びその製造方法及びモジュール及び水処理方法 |
| US10888822B2 (en) * | 2014-09-30 | 2021-01-12 | Toray Industries, Inc. | Separation membrane |
| DE102020102096B4 (de) | 2020-01-29 | 2023-03-23 | Cerdia International GmbH | Celluloseacetathaltiger faserstoff für ein nonwoven-produkt, nonwoven-produkt mit einem solchen faserstoff und verfahren zur herstellung eines solchen faserstoffs |
| US20230397602A1 (en) * | 2020-10-30 | 2023-12-14 | Toyobo Co., Ltd. | Cell cryopreservation hollow fiber membrane |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE342820A (de) * | 1925-09-17 | |||
| US3423491A (en) * | 1964-09-02 | 1969-01-21 | Dow Chemical Co | Permselective hollow fibers and method of making |
| FR1456757A (fr) * | 1964-09-02 | 1966-07-08 | Dow Chemical Co | Fibres creuses sélectivement perméables et leur fabrication |
| US3532527A (en) * | 1966-11-04 | 1970-10-06 | Dow Chemical Co | Permeable separatory membranes |
| US3745202A (en) * | 1971-03-17 | 1973-07-10 | Us Interior | Method of preparing an asymmetric membrane from a cellulose derivative |
| JPS5170316A (ja) * | 1974-12-16 | 1976-06-17 | Teijin Ltd | Seruroosuaseteetochukushino seizohoho |
-
1978
- 1978-06-09 AU AU36971/78A patent/AU519458B2/en not_active Expired
- 1978-06-19 NZ NZ187610A patent/NZ187610A/xx unknown
- 1978-06-21 DE DE2827100A patent/DE2827100C2/de not_active Expired
- 1978-06-22 CA CA306,020A patent/CA1107020A/en not_active Expired
- 1978-06-28 FR FR7819383A patent/FR2396780A1/fr active Granted
- 1978-06-30 AT AT0477578A patent/AT364899B/de not_active IP Right Cessation
- 1978-06-30 IT IT50125/78A patent/IT1107799B/it active
- 1978-07-04 SE SE7807516A patent/SE428221B/sv not_active IP Right Cessation
- 1978-07-04 DD DD78206508A patent/DD137950A5/de unknown
- 1978-07-04 GB GB7828704A patent/GB2000722B/en not_active Expired
- 1978-07-04 NO NO782320A patent/NO147979C/no unknown
- 1978-07-04 DK DK302078A patent/DK149600C/da not_active IP Right Cessation
- 1978-07-04 MX MX174045A patent/MX153159A/es unknown
- 1978-07-04 NL NL7807225A patent/NL7807225A/xx not_active Application Discontinuation
- 1978-07-04 JP JP8138378A patent/JPS5442420A/ja active Pending
- 1978-07-04 CH CH727578A patent/CH632536A5/fr not_active IP Right Cessation
- 1978-07-04 BE BE189048A patent/BE868708A/xx not_active IP Right Cessation
- 1978-07-05 BR BR7804325A patent/BR7804325A/pt unknown
-
1987
- 1987-02-05 JP JP62025535A patent/JPS62250215A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR7804325A (pt) | 1979-04-17 |
| CA1107020A (en) | 1981-08-18 |
| NO147979C (no) | 1983-07-20 |
| BE868708A (fr) | 1979-01-04 |
| GB2000722A (en) | 1979-01-17 |
| DK149600C (da) | 1987-02-09 |
| JPS6317922B2 (de) | 1988-04-15 |
| FR2396780A1 (fr) | 1979-02-02 |
| DD137950A5 (de) | 1979-10-03 |
| AU519458B2 (en) | 1981-12-03 |
| SE7807516L (sv) | 1979-01-06 |
| NL7807225A (nl) | 1979-01-09 |
| ATA477578A (de) | 1981-04-15 |
| IT1107799B (it) | 1985-11-25 |
| JPS5442420A (en) | 1979-04-04 |
| MX153159A (es) | 1986-08-14 |
| FR2396780B1 (de) | 1983-02-25 |
| DE2827100A1 (de) | 1979-01-25 |
| JPS62250215A (ja) | 1987-10-31 |
| NO147979B (no) | 1983-04-11 |
| IT7850125A0 (it) | 1978-06-30 |
| AT364899B (de) | 1981-11-25 |
| DK302078A (da) | 1979-01-06 |
| GB2000722B (en) | 1982-01-27 |
| AU3697178A (en) | 1979-12-13 |
| CH632536A5 (fr) | 1982-10-15 |
| DK149600B (da) | 1986-08-04 |
| NO782320L (no) | 1979-01-08 |
| NZ187610A (en) | 1980-09-12 |
| DE2827100C2 (de) | 1983-04-28 |
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