DEF0009786MA - - Google Patents
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- Publication number
- DEF0009786MA DEF0009786MA DEF0009786MA DE F0009786M A DEF0009786M A DE F0009786MA DE F0009786M A DEF0009786M A DE F0009786MA
- Authority
- DE
- Germany
- Prior art keywords
- ammonia
- solution
- cellulose
- thread
- copper oxide
- 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.)
- Active
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- 229920002678 cellulose Polymers 0.000 claims description 11
- 239000001913 cellulose Substances 0.000 claims description 11
- 238000009987 spinning Methods 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000012510 hollow fiber Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 239000005751 Copper oxide Substances 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical compound N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
Tag der Anmeldung: 27. August 1952 Bekamnitgemacht am 11. Oktober 1956Date of registration: August 27, 1952 Published on October 11, 1956
DEUTSCHES PATENTAMTGERMAN PATENT OFFICE
Es ist bekannt, Hohlgebilde aus Cellulosederivatlösung herzustellen. Es ist ferner aus der deutschen Patentschrift 498 158 und der britischen Patentschrift 249 845 bekannt, Kupferoxyd1-Ammoniak-Cellulose-Lösungen in heiße alkalische (ammoniakhaltige) Bäder zu verspinnen. Aus der USA.-Patentschrift 2216793 ist es bekannt, Kupf eroxyd-Ammoniak-Cellulose-Lösungen zunächst in ein heißes Wasserbad und anschließend in stark alkalische Bäder zu verspinnen.It is known to produce hollow structures from cellulose derivative solution. It is also known from German Patent 498 158 and British Patent 249 845 to spin copper oxide 1- ammonia-cellulose solutions in hot alkaline (ammonia-containing) baths. From the USA patent specification 2216793 it is known to spin copper oxide-ammonia-cellulose solutions first in a hot water bath and then in strongly alkaline baths.
Diese bekannten Spinnverfahren führten nicht zu Hohlgebilden, da die zunächst verwendeten Fällbäder nicht genügend alkalisch oder nicht heiß genug waren, um den gewünschten Effekt der Bildung von Hohlfäden hervorzurufen.These known spinning processes did not lead to hollow structures, as the precipitation baths used initially not enough alkaline or not hot enough to produce the desired effect of formation caused by hollow fibers.
Es wurde nun gefunden, daß man Lösungen von Cellulose in Kupferoxyd-Ammoniak dadurch zu Hohlgebilden verspinnen kann, wenn man die Celulloselösung in ein stark alkalisches Spinnbad eintreten läßt, dessen Temperatur so hoch gewählt ist, daß das in der Lösung enthaltene Ammoniak den Faden zu einem Schlauch aufbläht. Spinnt man einen Cellulosefaden aus Kupferoxyd-Ammoniak-Lösung in Natronlauge, so wird er zunächst an der Oberfläche gefällt. Es bildet sich eine Cellulosehaut, die im Inneren noch nicht koagulierte Lösung enthält. Erhöht man nun die Spinntemperatur der Fällbäder so, daß das in der noch nicht koagulierten Lösung enthaltene Ammoniak vergast, so kann das Ammoniakgas durch die gefällte CellulosehautIt has now been found that solutions of cellulose in copper oxide-ammonia can thereby be achieved Hollow structures can be spun if the cellulose solution is placed in a strongly alkaline spinning bath can occur, the temperature of which is selected so high that the ammonia contained in the solution inflates the thread into a tube. A cellulose thread is spun from a solution of copper oxide and ammonia in caustic soda, it is first precipitated on the surface. A cellulose skin forms, contains the solution that has not yet coagulated inside. If you now increase the spinning temperature of the Precipitation baths so that the ammonia contained in the not yet coagulated solution gasifies, so can the ammonia gas through the precipitated cellulose skin
609 657/460609 657/460
F 9786 IVc/29bF 9786 IVc / 29b
nicht, mehr entweichen, sondern bläht diese zu einem Schlauchartigen Hohlfaden auf. Vom Querschnitt der Düse ist der Effekt unabhängig. Abhängig ist er dagegen unter anderem vom Ammoniakgehalt der Spinnlösung, von der Temperatur und der Natronlaugekonzentration des Spinnbades, und von der Länge der Fällstrecke.no longer escape, but rather expands them to form a tube-like hollow thread. From the cross-section the effect is independent of the nozzle. On the other hand, it depends, among other things, on the ammonia content the spinning solution, the temperature and the sodium hydroxide concentration of the spinning bath, and the length of the felling route.
Aus einer runden, rechteckigen oder einer Spinndüse mit anderer Querschnittsform läßt man eine von einer Spinnpumpe geförderte bekannte Menge einer Celluloselösung in Kupferoxyd-Ammoniak in eine 700 heißes Natronlaugebad mit io°/oiger Natronlauge eintreten. Die heiße Lauge befindet sich in einer 4 m langen V2 Α-Rinne. Nachdem der Faden 1 bis 2 m durch die Lauge gelaufen ist, bläht er sich auf; es entsteht ein schlauchartiger Hohlfaden, der von einem Abzugsorgan aufgenommen und in der üblichen Weise mit Säure kupferfrei, mit Wasser säurefrei gewaschen wird. . Of a round, rectangular or a spinneret having other cross-sectional shape is allowed to a promoted by a spinning pump known amount of a cellulose solution in copper-ammonia in a 70 hot soda lye with 0 ° io / cent sodium hydroxide solution occur. The hot lye is located in a 4 m long V2 Α channel. After the thread has run 1 to 2 m through the lye, it puffs up; The result is a tube-like hollow thread which is picked up by a take-off device and washed free of copper in the usual way with acid and acid-free with water. .
Claims (1)
Deutsche Patentschriften Nr. 496 085, 569 038, 498158;Considered publications:
German Patent Nos. 496 085, 569 038, 498158;
britische Patentschrift Nr. 249845.U.S. Patent No. 2,216,793;
British Patent No. 249845.
Family
ID=
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