DD154068A5 - Semipermeable cellulose-hohlfaser,verfahren zu ihrer herstellung und trennvorrichtung mit solchen fasern - Google Patents
Semipermeable cellulose-hohlfaser,verfahren zu ihrer herstellung und trennvorrichtung mit solchen fasern Download PDFInfo
- Publication number
- DD154068A5 DD154068A5 DD80226098A DD22609880A DD154068A5 DD 154068 A5 DD154068 A5 DD 154068A5 DD 80226098 A DD80226098 A DD 80226098A DD 22609880 A DD22609880 A DD 22609880A DD 154068 A5 DD154068 A5 DD 154068A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- cellulose
- fiber
- fibers
- hollow fiber
- molecular weight
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 91
- 239000001913 cellulose Substances 0.000 title claims abstract description 53
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000835 fiber Substances 0.000 title abstract description 127
- 239000000203 mixture Substances 0.000 claims abstract description 88
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 36
- 238000002074 melt spinning Methods 0.000 claims abstract description 30
- 229920005862 polyol Polymers 0.000 claims abstract description 29
- 150000003077 polyols Chemical class 0.000 claims abstract description 29
- 239000004014 plasticizer Substances 0.000 claims abstract description 22
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 6
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 62
- 229920001747 Cellulose diacetate Polymers 0.000 claims description 24
- 229920001223 polyethylene glycol Polymers 0.000 claims description 23
- WUBBRNOQWQTFEX-UHFFFAOYSA-N 4-aminosalicylic acid Chemical compound NC1=CC=C(C(O)=O)C(O)=C1 WUBBRNOQWQTFEX-UHFFFAOYSA-N 0.000 claims description 6
- 229920008347 Cellulose acetate propionate Polymers 0.000 claims description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229920005903 polyol mixture Polymers 0.000 claims description 2
- 210000002700 urine Anatomy 0.000 claims 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 32
- 239000004202 carbamide Substances 0.000 abstract description 32
- 238000001631 haemodialysis Methods 0.000 abstract description 8
- 230000000322 hemodialysis Effects 0.000 abstract description 8
- 239000008280 blood Substances 0.000 abstract description 7
- 210000004369 blood Anatomy 0.000 abstract description 7
- 238000000502 dialysis Methods 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000001784 detoxification Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 235000011187 glycerol Nutrition 0.000 description 22
- 230000035699 permeability Effects 0.000 description 22
- 229920002301 cellulose acetate Polymers 0.000 description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical class OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 16
- 238000012360 testing method Methods 0.000 description 14
- 230000007062 hydrolysis Effects 0.000 description 13
- 238000006460 hydrolysis reaction Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 12
- 238000009987 spinning Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002202 Polyethylene glycol Substances 0.000 description 10
- 239000012528 membrane Substances 0.000 description 10
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- 229920001451 polypropylene glycol Polymers 0.000 description 8
- 150000002148 esters Chemical class 0.000 description 7
- 210000003734 kidney Anatomy 0.000 description 7
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000006196 deacetylation Effects 0.000 description 6
- 238000003381 deacetylation reaction Methods 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- DQEFEBPAPFSJLV-UHFFFAOYSA-N Cellulose propionate Chemical compound CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 DQEFEBPAPFSJLV-UHFFFAOYSA-N 0.000 description 5
- 229920006218 cellulose propionate Polymers 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 238000007127 saponification reaction Methods 0.000 description 4
- 108010059892 Cellulase Proteins 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 229940106157 cellulase Drugs 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000011872 intimate mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001727 cellulose butyrate Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- DDRJAANPRJIHGJ-UHFFFAOYSA-N creatinine Chemical compound CN1CC(=O)NC1=N DDRJAANPRJIHGJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 229940093476 ethylene glycol Drugs 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical compound [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 2
- UILQHUKSFUOOLH-UHFFFAOYSA-N (24E)-3beta-hydroxy-7,24-euphadien-26-oic acid Natural products CC1(C)C(O)CCC2(C)C(CCC3(C(C(CCC=C(C)C(O)=O)C)CCC33C)C)C3=CCC21 UILQHUKSFUOOLH-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- WYJQUJOFZRJXJE-UHFFFAOYSA-N CC(O)=O.O=S1(=O)CCCC1 Chemical compound CC(O)=O.O=S1(=O)CCCC1 WYJQUJOFZRJXJE-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- XTEIBUIGGLPXHO-SGUOXPDGSA-N Schinol Natural products CC=C(C)CC[C@@H](C)[C@@H]1CC[C@@]2(C)[C@H]3[C@H](O)C[C@@H]4C(C)(C)[C@@H](O)CC[C@]4(C)[C@@H]3C(=O)C[C@@]12C XTEIBUIGGLPXHO-SGUOXPDGSA-N 0.000 description 1
- 241000207961 Sesamum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 208000024780 Urticaria Diseases 0.000 description 1
- 229930003270 Vitamin B Natural products 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- YBCVMFKXIKNREZ-UHFFFAOYSA-N acoh acetic acid Chemical compound CC(O)=O.CC(O)=O YBCVMFKXIKNREZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229940109239 creatinine Drugs 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000002615 hemofiltration Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- XULSCZPZVQIMFM-IPZQJPLYSA-N odevixibat Chemical compound C12=CC(SC)=C(OCC(=O)N[C@@H](C(=O)N[C@@H](CC)C(O)=O)C=3C=CC(O)=CC=3)C=C2S(=O)(=O)NC(CCCC)(CCCC)CN1C1=CC=CC=C1 XULSCZPZVQIMFM-IPZQJPLYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- LZOZLBFZGFLFBV-UHFFFAOYSA-N sulfene Chemical compound C=S(=O)=O LZOZLBFZGFLFBV-UHFFFAOYSA-N 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229940045136 urea Drugs 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 235000019156 vitamin B Nutrition 0.000 description 1
- 239000011720 vitamin B Substances 0.000 description 1
- 238000003260 vortexing Methods 0.000 description 1
- 238000005303 weighing Methods 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
- B01D71/10—Cellulose; Modified cellulose
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- External Artificial Organs (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10420779A | 1979-12-17 | 1979-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD154068A5 true DD154068A5 (de) | 1982-02-24 |
Family
ID=22299216
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD80226098A DD154068A5 (de) | 1979-12-17 | 1980-12-15 | Semipermeable cellulose-hohlfaser,verfahren zu ihrer herstellung und trennvorrichtung mit solchen fasern |
| DD80233554A DD200311A5 (de) | 1979-12-17 | 1980-12-15 | Trennvorrichtung zum haemodialysieren und haemofiltrieren von blut |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD80233554A DD200311A5 (de) | 1979-12-17 | 1980-12-15 | Trennvorrichtung zum haemodialysieren und haemofiltrieren von blut |
Country Status (13)
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3042110A1 (de) * | 1980-11-07 | 1982-06-16 | Akzo Gmbh, 5600 Wuppertal | Mikroporoese cellulosemembran |
| DE3129064A1 (de) * | 1981-07-23 | 1983-02-10 | Akzo Gmbh, 5600 Wuppertal | Verfahren und vorrichtung zur blutoxygenation |
| US4425129A (en) * | 1981-12-07 | 1984-01-10 | Colgate-Palmolive Company | Diaper with cushioned elastic leg hold edges |
| DE3317037A1 (de) * | 1983-05-10 | 1984-11-15 | Hoechst Ag, 6230 Frankfurt | Membran aus regenerierter cellulose mit verbesserrten diffusionseigenschaften und verfahren zur herstellung |
| 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 |
| JPS6036061A (ja) * | 1983-08-08 | 1985-02-25 | 鐘淵化学工業株式会社 | 血液浄化装置 |
| JPS6045359A (ja) * | 1983-08-19 | 1985-03-11 | 鐘淵化学工業株式会社 | 血液浄化器 |
| JPH0653164B2 (ja) * | 1986-06-10 | 1994-07-20 | 東洋紡績株式会社 | セルロ−スエステル系中空糸状血漿分離膜 |
| DE3842822A1 (de) * | 1988-12-20 | 1990-07-05 | Akzo Gmbh | Biocompatible dialysemembran aus einem gemischten polysaccharidester |
| DE4038247A1 (de) * | 1990-11-30 | 1992-06-04 | Akzo Gmbh | Cellulosedialysehohlfaden |
| EP0580879B1 (de) * | 1992-06-25 | 1996-04-17 | Sächsische Kunstseiden GmbH | Verfahren zur Erhöhung der Form- und Spinnstabilität von Kapillarhohlmembranen |
| JPH07779A (ja) * | 1993-02-04 | 1995-01-06 | Mitsubishi Rayon Co Ltd | 炭酸ガス溶解方法及び装置 |
| EP2714105B1 (de) | 2011-05-26 | 2015-07-01 | BioCELL Gesellschaft für Biotechnologie mbH | Funktionalisierte wundauflage |
| CN110685021B (zh) * | 2019-09-26 | 2021-06-04 | 湖北新阳特种纤维股份有限公司 | 纺织用二醋酸纤维素纤维的制备方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3423491A (en) * | 1964-09-02 | 1969-01-21 | Dow Chemical Co | Permselective hollow fibers and method of making |
| US3494780A (en) * | 1966-11-04 | 1970-02-10 | Dow Chemical Co | Method for enhancing permeability of separatory membranes |
| US3532527A (en) * | 1966-11-04 | 1970-10-06 | Dow Chemical Co | Permeable separatory membranes |
| GB1481064A (en) * | 1973-08-30 | 1977-07-27 | Teijin Ltd | Membrane apparatus for treating fluids |
| JPS5644161B2 (enrdf_load_stackoverflow) * | 1974-02-21 | 1981-10-17 | ||
| JPS5644162B2 (enrdf_load_stackoverflow) * | 1974-02-22 | 1981-10-17 | ||
| JPS5155417A (ja) * | 1974-11-09 | 1976-05-15 | Teijin Ltd | Seruroosuaseteetochukushino seizohoho |
| JPS52144416A (en) * | 1976-05-25 | 1977-12-01 | Teijin Ltd | Hollow cellulose fibers |
| AU519458B2 (en) * | 1977-07-05 | 1981-12-03 | Cordis Dow Corporation | Cellulose acetate hollow fibres |
| EP0008536B1 (en) * | 1978-08-22 | 1984-08-01 | Mitsubishi Rayon Co., Ltd. | Process for manufacturing regenerated cellulose hollow fiber |
-
1980
- 1980-10-06 CA CA000361632A patent/CA1153171A/en not_active Expired
- 1980-10-15 AU AU63405/80A patent/AU543028B2/en not_active Ceased
- 1980-11-03 IT IT50066/80A patent/IT1146243B/it active
- 1980-11-20 FR FR8024644A patent/FR2473340B1/fr not_active Expired
- 1980-11-26 BE BE0/202937A patent/BE886354A/fr not_active IP Right Cessation
- 1980-11-26 DE DE3044435A patent/DE3044435C3/de not_active Expired - Lifetime
- 1980-11-26 ES ES497154A patent/ES8202873A1/es not_active Expired
- 1980-11-27 JP JP55167358A patent/JPH0778288B2/ja not_active Expired - Lifetime
- 1980-11-28 NL NL8006491A patent/NL192269C/nl not_active IP Right Cessation
- 1980-12-15 DD DD80226098A patent/DD154068A5/de unknown
- 1980-12-15 DD DD80233554A patent/DD200311A5/de unknown
- 1980-12-16 CH CH9268/80A patent/CH650033A5/fr not_active IP Right Cessation
- 1980-12-16 SE SE8008813A patent/SE449376B/sv not_active IP Right Cessation
- 1980-12-16 GB GB8040205A patent/GB2065546B/en not_active Expired
-
1981
- 1981-11-30 ES ES81507576A patent/ES8301643A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES497154A0 (es) | 1982-02-16 |
| ES507576A0 (es) | 1982-12-16 |
| DE3044435C2 (enrdf_load_stackoverflow) | 1992-05-27 |
| NL192269B (nl) | 1996-12-02 |
| GB2065546A (en) | 1981-07-01 |
| IT1146243B (it) | 1986-11-12 |
| DD200311A5 (de) | 1983-04-13 |
| JPH0778288B2 (ja) | 1995-08-23 |
| SE449376B (sv) | 1987-04-27 |
| NL8006491A (nl) | 1981-07-16 |
| AU6340580A (en) | 1981-06-25 |
| AU543028B2 (en) | 1985-03-28 |
| DE3044435C3 (de) | 1998-08-13 |
| ES8202873A1 (es) | 1982-02-16 |
| CH650033A5 (fr) | 1985-06-28 |
| CA1153171A (en) | 1983-09-06 |
| IT8050066A0 (it) | 1980-11-03 |
| ES8301643A1 (es) | 1982-12-16 |
| GB2065546B (en) | 1985-02-13 |
| SE8008813L (sv) | 1981-06-18 |
| FR2473340B1 (fr) | 1988-08-05 |
| JPS5691006A (en) | 1981-07-23 |
| NL192269C (nl) | 1997-04-03 |
| DE3044435A1 (de) | 1981-06-25 |
| BE886354A (fr) | 1981-05-26 |
| FR2473340A1 (fr) | 1981-07-17 |
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