SE432113B - Forfarande for framstellning av fibrer med poros struktur - Google Patents
Forfarande for framstellning av fibrer med poros strukturInfo
- Publication number
- SE432113B SE432113B SE7714702A SE7714702A SE432113B SE 432113 B SE432113 B SE 432113B SE 7714702 A SE7714702 A SE 7714702A SE 7714702 A SE7714702 A SE 7714702A SE 432113 B SE432113 B SE 432113B
- Authority
- SE
- Sweden
- Prior art keywords
- fiber
- fibers
- glycerol
- water
- porous
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 85
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 51
- 239000000203 mixture Substances 0.000 claims description 15
- 229920000642 polymer Polymers 0.000 claims description 13
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 10
- 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 claims description 10
- 238000009987 spinning Methods 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 108090000790 Enzymes Proteins 0.000 description 14
- 102000004190 Enzymes Human genes 0.000 description 14
- 238000003756 stirring Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000008363 phosphate buffer Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- YQDHCCVUYCIGSW-LBPRGKRZSA-N ethyl (2s)-2-benzamido-5-(diaminomethylideneamino)pentanoate Chemical group NC(=N)NCCC[C@@H](C(=O)OCC)NC(=O)C1=CC=CC=C1 YQDHCCVUYCIGSW-LBPRGKRZSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 102000004169 proteins and genes Human genes 0.000 description 6
- 108090000623 proteins and genes Proteins 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000010828 elution Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 4
- 102000004142 Trypsin Human genes 0.000 description 4
- 108090000631 Trypsin Proteins 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000012588 trypsin Substances 0.000 description 4
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 3
- 238000009739 binding Methods 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 230000002255 enzymatic effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- 229920002307 Dextran Polymers 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 108010073038 Penicillin Amidase Proteins 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000002523 gelfiltration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229940056360 penicillin g Drugs 0.000 description 2
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- NGHVIOIJCVXTGV-ALEPSDHESA-N 6-aminopenicillanic acid Chemical compound [O-]C(=O)[C@H]1C(C)(C)S[C@@H]2[C@H]([NH3+])C(=O)N21 NGHVIOIJCVXTGV-ALEPSDHESA-N 0.000 description 1
- NGHVIOIJCVXTGV-UHFFFAOYSA-N 6beta-amino-penicillanic acid Natural products OC(=O)C1C(C)(C)SC2C(N)C(=O)N21 NGHVIOIJCVXTGV-UHFFFAOYSA-N 0.000 description 1
- 102000014914 Carrier Proteins Human genes 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- RSYYQCDERUOEFI-JTQLQIEISA-N N-benzoyl-L-arginine Chemical compound NC(=N)NCCC[C@@H](C(O)=O)NC(=O)C1=CC=CC=C1 RSYYQCDERUOEFI-JTQLQIEISA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 108091008324 binding proteins Proteins 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000006911 enzymatic reaction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 229930195712 glutamate Natural products 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229960003424 phenylacetic acid Drugs 0.000 description 1
- 239000003279 phenylacetic acid Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 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
- B01D67/0002—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
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28023—Fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/12—Ion-exchange processes in general; Apparatus therefor characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes
- B01J47/127—Ion-exchange processes in general; Apparatus therefor characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes in the form of filaments or fibres
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Zoology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Reinforced Plastic Materials (AREA)
- Peptides Or Proteins (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT30799/76A IT1065294B (it) | 1976-12-23 | 1976-12-23 | Procedimento per la preparazione di fibre a struttura porosa,fibre porose cosi'ottenute e impieghi delle stesse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7714702L SE7714702L (sv) | 1978-06-24 |
| SE432113B true SE432113B (sv) | 1984-03-19 |
Family
ID=11232128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7714702A SE432113B (sv) | 1976-12-23 | 1977-12-22 | Forfarande for framstellning av fibrer med poros struktur |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5381718A (de) |
| AU (1) | AU509081B2 (de) |
| BE (1) | BE862287A (de) |
| CH (1) | CH636381A5 (de) |
| CS (1) | CS208154B2 (de) |
| DD (2) | DD136856A5 (de) |
| DE (1) | DE2757787B2 (de) |
| DK (1) | DK575677A (de) |
| FR (1) | FR2375280A1 (de) |
| GB (1) | GB1572196A (de) |
| HU (1) | HU177739B (de) |
| IT (1) | IT1065294B (de) |
| LU (1) | LU78740A1 (de) |
| NL (1) | NL7714212A (de) |
| NO (1) | NO774403L (de) |
| SE (1) | SE432113B (de) |
| YU (1) | YU299777A (de) |
| ZA (1) | ZA776996B (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2755341C2 (de) | 1977-12-12 | 1983-09-08 | Akzo Gmbh, 5600 Wuppertal | Hydrophile Polyesterfasern |
| DE2906056A1 (de) * | 1979-02-16 | 1980-08-28 | Linde Ag | Verfahren zur rueckgewinnung der salze der anthrachinondisulfonsaeure aus einem waschfluessigkeitsstrom |
| JPS56140113A (en) * | 1980-03-28 | 1981-11-02 | Kuraray Co Ltd | Synthetic polyvinyl alcohol fiber having improved adhesive property to cement and its preparation |
| FR2565841B1 (fr) * | 1984-06-14 | 1989-08-18 | Inst Nat Rech Chimique | Materiau a grande surface specifique et ses applications pour favoriser le contact entre des milieux ou des reactifs impliquant des phenomenes physiques et/ou chimiques, et/ou biologiques |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE336521A (de) * | 1925-09-17 | |||
| GB802689A (en) * | 1955-08-06 | 1958-10-08 | British Nylon Spinners Ltd | Improvements in or relating to yarn comprising crimped filaments and its manufacture |
| IL32406A (en) * | 1968-06-26 | 1973-01-30 | Snam Progetti | Enzyme preparations comprising a solution or dispersion of enzyme occluded in filaments of cellulose esters or synthetic polymers |
| IT941398B (it) * | 1971-04-28 | 1973-03-01 | Snam Progetti | Dispositivo atto a realizzare anali si nel campo della chimica organica |
| IT1012509B (it) * | 1971-05-26 | 1977-03-10 | Snam Progetti | Procedimento per la preparazione di composti organici contenenti atomi marcati |
| DE2158124C3 (de) * | 1971-11-24 | 1975-03-13 | Boehringer Mannheim Gmbh, 6800 Mannheim | Verwendung von Polyamidvlies oder -filz als saugfähiger Träger für diagnostische Mittel |
| JPS4911793A (de) * | 1972-05-10 | 1974-02-01 | ||
| JPS554842B2 (de) * | 1972-06-30 | 1980-02-01 | ||
| CH586726A5 (de) * | 1972-08-02 | 1977-04-15 | Basf Ag | |
| IT1017564B (it) * | 1974-04-30 | 1977-08-10 | Snam Progetti | Processo per la preparazione di derivati adeninici funzionalizza ti e prodotti cosi ottenuti |
| IT1046849B (it) * | 1974-06-12 | 1980-07-31 | Snam Progetti | Processo per la preparazione di derivati adeninici macromolecola rizzati e prodotti cosi ottenuti |
-
1976
- 1976-12-23 IT IT30799/76A patent/IT1065294B/it active
-
1977
- 1977-11-24 ZA ZA00776996A patent/ZA776996B/xx unknown
- 1977-11-28 AU AU30993/77A patent/AU509081B2/en not_active Expired
- 1977-12-06 GB GB50824/77A patent/GB1572196A/en not_active Expired
- 1977-12-14 CH CH1538477A patent/CH636381A5/it not_active IP Right Cessation
- 1977-12-16 YU YU02997/77A patent/YU299777A/xx unknown
- 1977-12-20 CS CS778594A patent/CS208154B2/cs unknown
- 1977-12-21 LU LU78740A patent/LU78740A1/xx unknown
- 1977-12-21 DD DD77202853A patent/DD136856A5/de unknown
- 1977-12-21 NL NL7714212A patent/NL7714212A/xx not_active Application Discontinuation
- 1977-12-21 DD DD77212117A patent/DD142897A5/de unknown
- 1977-12-21 NO NO774403A patent/NO774403L/no unknown
- 1977-12-22 SE SE7714702A patent/SE432113B/sv unknown
- 1977-12-22 DK DK575677A patent/DK575677A/da not_active Application Discontinuation
- 1977-12-22 HU HU77SA3083A patent/HU177739B/hu unknown
- 1977-12-22 FR FR7738885A patent/FR2375280A1/fr active Granted
- 1977-12-23 DE DE2757787A patent/DE2757787B2/de not_active Ceased
- 1977-12-23 JP JP15460777A patent/JPS5381718A/ja active Pending
- 1977-12-23 BE BE183815A patent/BE862287A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK575677A (da) | 1978-06-24 |
| HU177739B (en) | 1981-12-28 |
| GB1572196A (en) | 1980-07-23 |
| DE2757787A1 (de) | 1978-06-29 |
| JPS5381718A (en) | 1978-07-19 |
| BE862287A (fr) | 1978-06-23 |
| FR2375280A1 (fr) | 1978-07-21 |
| CS208154B2 (en) | 1981-08-31 |
| IT1065294B (it) | 1985-02-25 |
| FR2375280B1 (de) | 1981-06-19 |
| CH636381A5 (en) | 1983-05-31 |
| ZA776996B (en) | 1978-09-27 |
| AU509081B2 (en) | 1980-04-17 |
| DE2757787B2 (de) | 1979-08-16 |
| DD136856A5 (de) | 1979-08-01 |
| NL7714212A (nl) | 1978-06-27 |
| SE7714702L (sv) | 1978-06-24 |
| YU299777A (en) | 1982-08-31 |
| LU78740A1 (de) | 1978-04-17 |
| NO774403L (no) | 1978-06-26 |
| AU3099377A (en) | 1979-06-28 |
| DD142897A5 (de) | 1980-07-16 |
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