DE2539336C2 - Verfahren zum kontinuierlichen Färben von Cellulosefaser!! oder deren Mischungen mit Synthesefasern mit auf der Faser erzeugten wasserunlöslichen Azofarbstoffen - Google Patents
Verfahren zum kontinuierlichen Färben von Cellulosefaser!! oder deren Mischungen mit Synthesefasern mit auf der Faser erzeugten wasserunlöslichen AzofarbstoffenInfo
- Publication number
- DE2539336C2 DE2539336C2 DE19752539336 DE2539336A DE2539336C2 DE 2539336 C2 DE2539336 C2 DE 2539336C2 DE 19752539336 DE19752539336 DE 19752539336 DE 2539336 A DE2539336 A DE 2539336A DE 2539336 C2 DE2539336 C2 DE 2539336C2
- Authority
- DE
- Germany
- Prior art keywords
- liquor
- fiber
- venturi
- textile material
- diazo component
- 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
Links
- 238000000034 method Methods 0.000 title claims description 38
- 239000000835 fiber Substances 0.000 title claims description 10
- 239000000203 mixture Substances 0.000 title claims description 8
- 229920003043 Cellulose fiber Polymers 0.000 title claims description 7
- 229920002994 synthetic fiber Polymers 0.000 title claims description 4
- 239000012209 synthetic fiber Substances 0.000 title claims description 4
- 239000000987 azo dye Substances 0.000 title description 4
- 238000010014 continuous dyeing Methods 0.000 title description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000004753 textile Substances 0.000 claims description 13
- 150000001412 amines Chemical class 0.000 claims description 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 238000006193 diazotization reaction Methods 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 239000000975 dye Substances 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- -1 aryl amides Chemical class 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 238000004043 dyeing Methods 0.000 description 5
- 235000002639 sodium chloride Nutrition 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- XDWATWCCUTYUDE-UHFFFAOYSA-N n-(5-chloro-2,4-dimethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide Chemical compound C1=C(Cl)C(OC)=CC(OC)=C1NC(=O)C1=CC2=CC=CC=C2C=C1O XDWATWCCUTYUDE-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- WBGVVXSCGNGJFL-UHFFFAOYSA-N 3-amino-n,n-diethyl-4-methoxybenzenesulfonamide Chemical compound CCN(CC)S(=O)(=O)C1=CC=C(OC)C(N)=C1 WBGVVXSCGNGJFL-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-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
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000001989 diazonium salts Chemical class 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-M naphthalen-1-olate Chemical compound C1=CC=C2C([O-])=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-M 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 150000003142 primary aromatic amines Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000010288 sodium nitrite Nutrition 0.000 description 2
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 description 1
- GXJQMKFJQFGQKV-KHPPLWFESA-N 2-[methyl-[(z)-octadec-9-enoyl]amino]ethanesulfonic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)N(C)CCS(O)(=O)=O GXJQMKFJQFGQKV-KHPPLWFESA-N 0.000 description 1
- MSCMTURKIQRYPE-UHFFFAOYSA-N 2-hydroxyanthracene-1-carboxylic acid Chemical compound C1=CC=C2C=C3C(C(=O)O)=C(O)C=CC3=CC2=C1 MSCMTURKIQRYPE-UHFFFAOYSA-N 0.000 description 1
- AXUHYNGMYQMRRI-UHFFFAOYSA-N 3-hydroxy-n-[4-[4-[(3-hydroxynaphthalene-2-carbonyl)amino]-3-methoxyphenyl]-2-methoxyphenyl]naphthalene-2-carboxamide Chemical compound C1=CC=C2C=C(O)C(C(=O)NC3=CC=C(C=C3OC)C=3C=C(C(=CC=3)NC(=O)C=3C(=CC4=CC=CC=C4C=3)O)OC)=CC2=C1 AXUHYNGMYQMRRI-UHFFFAOYSA-N 0.000 description 1
- HXUIDZOMTRMIOE-UHFFFAOYSA-N 3-oxo-3-phenylpropionic acid Chemical compound OC(=O)CC(=O)C1=CC=CC=C1 HXUIDZOMTRMIOE-UHFFFAOYSA-N 0.000 description 1
- 241000985630 Lota lota Species 0.000 description 1
- HKOVAOLUBZZCGO-UHFFFAOYSA-N Mukeic acid Chemical compound C1=CC=C2C3=CC(C(=O)O)=CC(O)=C3NC2=C1 HKOVAOLUBZZCGO-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 241001061106 Sargocentron rubrum Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229940051880 analgesics and antipyretics pyrazolones Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- UBXYXCRCOKCZIT-UHFFFAOYSA-N biphenyl-3-ol Chemical group OC1=CC=CC(C=2C=CC=CC=2)=C1 UBXYXCRCOKCZIT-UHFFFAOYSA-N 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002440 hydroxy compounds Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 150000005204 hydroxybenzenes Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- CRVVHBFLWWQMPT-UHFFFAOYSA-N naphthalene-1-sulfonic acid;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 CRVVHBFLWWQMPT-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/68—Preparing azo dyes on the material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/916—Natural fiber dyeing
- Y10S8/918—Cellulose textile
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
- Treatment Of Fiber Materials (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752539336 DE2539336C2 (de) | 1975-09-04 | 1975-09-04 | Verfahren zum kontinuierlichen Färben von Cellulosefaser!! oder deren Mischungen mit Synthesefasern mit auf der Faser erzeugten wasserunlöslichen Azofarbstoffen |
| NL7609624A NL7609624A (nl) | 1975-09-04 | 1976-08-30 | Werkwijze voor het continu verven van cellulo- sevezels of mengsels daarvan met synthetische vezels met op de vezel gevormde, in water on- oplosbare azokleurstoffen. |
| ES451099A ES451099A1 (es) | 1975-09-04 | 1976-08-30 | Procedimiento para la tincion continua de material textil a base de fibras celulosicas o sus mezclas con fibras sinteti-cas. |
| IT26801/76A IT1077014B (it) | 1975-09-04 | 1976-09-02 | Processo per la tintura continua di fibre cellulosiche o loro miscele con fibre sintetiche con azocoloranti idrosolubili prodotti sulla fibra |
| US05/720,070 US4082504A (en) | 1975-09-04 | 1976-09-02 | Process for the continuous dyeing of cellulose fibers or mixtures thereof with synthetic fibers with water-insoluble azo dyestuffs developed on the fiber |
| JP51105096A JPS5234083A (en) | 1975-09-04 | 1976-09-03 | Continuous dyeing method of cellolosic fiber or blended yarn fabric of same and synthetic fiber by water insoluble azo dyestuff produced on fiber |
| GB36824/76A GB1562215A (en) | 1975-09-04 | 1976-09-06 | Process for the continuous dyeing of cellulose fibres or mixtures thereof with synthetic fibres with water-insuluble azo dyestuffs developed on the fibre |
| BE170388A BE845897A (fr) | 1975-09-04 | 1976-09-06 | Procede de teinture continue de matieres fibreuses a base de cellulose avec des colorants azoiques |
| FR7626785A FR2322966A1 (fr) | 1975-09-04 | 1976-09-06 | Procede de teinture continue de matieres fibreuses a base de cellulose avec des colorants azoiques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752539336 DE2539336C2 (de) | 1975-09-04 | 1975-09-04 | Verfahren zum kontinuierlichen Färben von Cellulosefaser!! oder deren Mischungen mit Synthesefasern mit auf der Faser erzeugten wasserunlöslichen Azofarbstoffen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2539336B1 DE2539336B1 (de) | 1977-01-13 |
| DE2539336C2 true DE2539336C2 (de) | 1977-09-01 |
Family
ID=5955574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752539336 Expired DE2539336C2 (de) | 1975-09-04 | 1975-09-04 | Verfahren zum kontinuierlichen Färben von Cellulosefaser!! oder deren Mischungen mit Synthesefasern mit auf der Faser erzeugten wasserunlöslichen Azofarbstoffen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4082504A (Direct) |
| JP (1) | JPS5234083A (Direct) |
| BE (1) | BE845897A (Direct) |
| DE (1) | DE2539336C2 (Direct) |
| ES (1) | ES451099A1 (Direct) |
| FR (1) | FR2322966A1 (Direct) |
| GB (1) | GB1562215A (Direct) |
| IT (1) | IT1077014B (Direct) |
| NL (1) | NL7609624A (Direct) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2757259C2 (de) * | 1977-12-22 | 1983-01-13 | Hans-Ulrich Von Der Dipl.-Chem. Dr. 6000 Frankfurt Eltz | Verfahren zum Färben oder Bedrucken von flächenförmigen, Synthesefaser enthaltendem Textilmaterial |
| US5577282A (en) * | 1995-05-22 | 1996-11-26 | Gaston County Dyeing Machine Company | Textile wet processing machine and method |
| ITMI20021220A1 (it) * | 2002-06-05 | 2003-12-05 | Savio Macchine Tessili Spa | Procedimento e dispositivo per il mercerizzo in continuo dei filati tessili |
| US7931701B2 (en) * | 2002-12-27 | 2011-04-26 | Hbi Branded Apparel Enterprises, Llc | Composition for dyeing of cellulosic fabric |
| US7931700B2 (en) * | 2002-12-27 | 2011-04-26 | Hbi Branded Apparel Enterprises, Llc | Composition for dyeing of cellulosic fabric |
| US7931699B2 (en) * | 2002-12-27 | 2011-04-26 | Hbi Branded Apparel Enterprises, Llc | Compositions for spray dyeing cellulosic fabrics |
| US7398660B2 (en) * | 2005-09-14 | 2008-07-15 | Zzakey Technologies Ltd | Dyeing apparatus and method therefor |
| US9481777B2 (en) | 2012-03-30 | 2016-11-01 | The Procter & Gamble Company | Method of dewatering in a continuous high internal phase emulsion foam forming process |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE620323C (de) * | 1935-10-19 | I G Farbenindustrie Akt Ges | Verfahren zum Entwickeln von unloeslichen Azofarbstoffen auf Trikotschlauchware | |
| US2074031A (en) * | 1935-05-11 | 1937-03-16 | Du Pont | Continuous dyeing process |
| US2460206A (en) * | 1945-12-07 | 1949-01-25 | Du Pont | Method of continuous dyeing |
| US3042480A (en) * | 1958-07-17 | 1962-07-03 | Shri Ram Inst For Ind Res | Method of application of fluids to textile materials |
| US3430466A (en) * | 1967-08-01 | 1969-03-04 | Hunt Co Rodney | Wet processing apparatus |
| DE1959743A1 (de) * | 1969-11-28 | 1971-06-16 | Thies Fa B | Vorrichtung zur Nassbehandlung von strang- oder bahnfoermigen Textilguetern |
| BE757699R (fr) * | 1968-09-14 | 1971-04-01 | Thies Fa B | Procede et dispositif pour le traitement par voie humide de matieres textiles sous forme d'echeveau ou de le |
| US3952558A (en) * | 1973-03-28 | 1976-04-27 | Avesta Jernverks Aktiebolag | Machine for dyeing or other wet-treatment of textiles |
| DK468274A (Direct) * | 1973-09-05 | 1975-05-05 | Teijin Ltd |
-
1975
- 1975-09-04 DE DE19752539336 patent/DE2539336C2/de not_active Expired
-
1976
- 1976-08-30 ES ES451099A patent/ES451099A1/es not_active Expired
- 1976-08-30 NL NL7609624A patent/NL7609624A/xx not_active Application Discontinuation
- 1976-09-02 IT IT26801/76A patent/IT1077014B/it active
- 1976-09-02 US US05/720,070 patent/US4082504A/en not_active Expired - Lifetime
- 1976-09-03 JP JP51105096A patent/JPS5234083A/ja active Pending
- 1976-09-06 FR FR7626785A patent/FR2322966A1/fr active Granted
- 1976-09-06 BE BE170388A patent/BE845897A/xx unknown
- 1976-09-06 GB GB36824/76A patent/GB1562215A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5234083A (en) | 1977-03-15 |
| US4082504A (en) | 1978-04-04 |
| GB1562215A (en) | 1980-03-05 |
| FR2322966B1 (Direct) | 1982-02-19 |
| FR2322966A1 (fr) | 1977-04-01 |
| IT1077014B (it) | 1985-04-27 |
| NL7609624A (nl) | 1977-03-08 |
| ES451099A1 (es) | 1977-08-16 |
| BE845897A (fr) | 1977-03-07 |
| DE2539336B1 (de) | 1977-01-13 |
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