DE961287C - Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions - Google Patents

Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions

Info

Publication number
DE961287C
DE961287C DEF9786A DEF0009786A DE961287C DE 961287 C DE961287 C DE 961287C DE F9786 A DEF9786 A DE F9786A DE F0009786 A DEF0009786 A DE F0009786A DE 961287 C DE961287 C DE 961287C
Authority
DE
Germany
Prior art keywords
ammonia
copper oxide
production
tubular hollow
cellulose
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
Application number
DEF9786A
Other languages
German (de)
Inventor
Dr Alfred Reichle
Dr Wilhelm Ries
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF9786A priority Critical patent/DE961287C/en
Application granted granted Critical
Publication of DE961287C publication Critical patent/DE961287C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/24Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

Verfahren zur Herstellung von schlauchartigen Hohlfäden aus Kupferoxyd-Ammoniak-Cellulose-Lösungen Es ist bekannt, Hohlgebilde aus Cellulosederivatlösung herzustellen. Es ist ferner aus der deutschen' Patentschrift 498 158 und der britischen Patentschrift 249 845 bekannt, Kupferoxyd-Ammoniak-Cellulose-Lös.ungen in heiße alkalische (ammoniakhaltige) Bäder zu verspinnen. Aus der USA.-Patentschrift 2216793 ist es bekannt, Kupferoxyd-Ammoniak-Cellulose-Lösungen zunächst in ein heißes Wasserbad und anschließend. in stark alkalische Bäder zü verspinnen.Process for the production of tubular hollow fibers from copper oxide-ammonia-cellulose solutions It is known to produce hollow structures from cellulose derivative solution. It is further from German patent specification 498 158 and British patent specification 249 845 known, copper oxide-ammonia-cellulose solutions in hot alkaline (ammonia-containing) Spin baths. From US Pat. No. 2216793 it is known to use copper oxide-ammonia-cellulose solutions first in a hot water bath and then. zü in strongly alkaline baths spin.

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. 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 Ainmoniakgas durch die gefällte Cellulosehaut 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 dies Spinnbades und von der Länge der Fällstrecke. Breispiel 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 70° heißes Natronlaugebad mit io°/oiger Natronlauge eintreten. Die heiße Lauge befindet sich .irr einer 4 m langen V2 A-Rinne. Nachdem der Faden I bis z 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.These known spinning processes did not lead to hollow structures, since the precipitation baths initially used were not sufficiently alkaline or not hot enough to. to produce the desired effect of the formation of hollow fibers. It has now been found that solutions of cellulose in copper oxide-ammonia can be spun into hollow structures if the cellulose solution is allowed to enter a strongly alkaline spinning bath, the temperature of which is selected so high that the ammonia contained in the solution forms the thread into one Hose inflates. If a cellulose thread is spun from a copper oxide-ammonia solution in sodium hydroxide solution, it is first precipitated on the surface. A cellulose skin forms which contains a solution that has not yet coagulated inside. If the spinning temperature of the precipitation baths is increased so that the ammonia contained in the not yet coagulated solution is gasified, the ammonia gas can no longer escape through the precipitated cellulose skin, but rather expands it to form a tubular hollow thread. The effect is independent of the cross-section of the nozzle. On the other hand, it depends, among other things, on the ammonia content of the spinning solution, on the temperature and the sodium hydroxide concentration of the spinning bath and on the length of the felling path. Example From a round, rectangular or a spinneret with a different cross-sectional shape, a known amount of a cellulose solution in copper oxide-ammonia conveyed by a spinning pump is allowed to enter a 70 ° hot sodium hydroxide bath with 10% sodium hydroxide solution. The hot lye is located in a 4 m long V2 A gutter. After the thread 1 has run 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)

PATENTANSP'RUGH: Verfahren zur Herstellung von schlauchartigen Hohlfäden aus Kupferoxyd-Ammoniak-Cellulose-Lösung, dadurch gekennzeichnet, daß 'man die Celluloselösung in ein stark alkalisches Spinnbad eintreten läßt; dessen Temperatur so hoch gewählt ist, daß das Ammoniak der noch nicht koagulierten Lösung im. Kern des Fadens zum Verdampfen gebracht wird. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 496 o85, 569 038, 498 158; USA.-Patentschrift Nr. a 216 793; britische Patentschrift Nr. 249 845.PATENTANSP'RUGH: Process for the production of tubular hollow fibers from copper oxide-ammonia-cellulose solution, characterized in that the cellulose solution is allowed to enter a strongly alkaline spinning bath; whose temperature is chosen so high that the ammonia of the not yet coagulated solution in the. The core of the thread is made to evaporate. Considered publications: German Patent Nos. 496,085, 569 038, 498 158; U.S. Patent No. a 216,793; British Patent No. 249 845.
DEF9786A 1952-08-28 1952-08-28 Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions Expired DE961287C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF9786A DE961287C (en) 1952-08-28 1952-08-28 Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF9786A DE961287C (en) 1952-08-28 1952-08-28 Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions

Publications (1)

Publication Number Publication Date
DE961287C true DE961287C (en) 1957-04-04

Family

ID=7086256

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF9786A Expired DE961287C (en) 1952-08-28 1952-08-28 Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions

Country Status (1)

Country Link
DE (1) DE961287C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249845A (en) * 1925-03-26 1927-05-12 Wanda Schulz An improved method of manufacturing cuprammonium silk threads
DE496085C (en) * 1925-11-11 1930-04-12 Fabrication De La Soie Rhodias Process for the production of hollow rayon threads by the dry spinning process
DE569038C (en) * 1928-02-19 1933-01-27 Hellmut Schupp Dr Ing Dry spinning process for the production of acetate silk
US2216793A (en) * 1937-02-04 1940-10-08 Celanese Corp Manufacture of colored artificial materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249845A (en) * 1925-03-26 1927-05-12 Wanda Schulz An improved method of manufacturing cuprammonium silk threads
DE498158C (en) * 1925-03-26 1930-05-19 J P Bemberg Akt Ges Process for the production of artificial threads from copper oxide ammonia cellulose solutions
DE496085C (en) * 1925-11-11 1930-04-12 Fabrication De La Soie Rhodias Process for the production of hollow rayon threads by the dry spinning process
DE569038C (en) * 1928-02-19 1933-01-27 Hellmut Schupp Dr Ing Dry spinning process for the production of acetate silk
US2216793A (en) * 1937-02-04 1940-10-08 Celanese Corp Manufacture of colored artificial materials

Similar Documents

Publication Publication Date Title
DE941009C (en) Process for the production of artificial threads from viscose
DE738486C (en) Process for spinning viscose
DE961287C (en) Process for the production of tubular hollow threads from copper oxide-ammonia-cellulose solutions
DE752701C (en) Process for the production of threads or fibers from casein
DE749264C (en) Process for the production of synthetic fibers or threads from viscose
DE909491C (en) Process for the production of threads or fibers from casein
DEF0009786MA (en)
AT142236B (en) Process for spinning viscose.
DE842826C (en) Process for the production of artificial, insoluble structures, such as threads or fibers, from vegetable seed globulins or phosphor proteins
DE573740C (en) Process for the production of artificial structures from fibroin solutions
AT159718B (en) Process for the production of cellulose fibers from protein-containing viscose solutions.
DE710664C (en) Process for the production of crimped rayon from viscose
DE665679C (en) Process for the production of synthetic threads from viscose
DE498158C (en) Process for the production of artificial threads from copper oxide ammonia cellulose solutions
DE492162C (en) Process for the production of viscose threads of 5 deniers and less
DE818547C (en) Process for the production of copper rayon using the funnel spinning process
AT133110B (en) Process for the production of artificial threads or other products.
AT132381B (en) Process for the production of artificial structures such as fibers, films, ribbons, tubes and the like. Like. From aqueous neutral or weakly alkaline salt-free or low-salt fibroin solutions.
DE876440C (en) Process for the production of structures from viscose
DE353483C (en) Process for the production of threads from viscose
AT105899B (en) Process for the production of cellulose skins, filament tubes, etc. from an aqueous solution of viscose in uninterrupted operations.
DE833102C (en) Process for the production of artificial, insoluble threads or fibers from proteins
DE702001C (en) Method for improving casein fibers
DE826782C (en) Process for the production of viscous solutions of peanut globulins in alkali
DE598862C (en) Method of making hollow artificial threads