AT28151B - Method of making shiny threads. - Google Patents
Method of making shiny threads.Info
- Publication number
- AT28151B AT28151B AT28151DA AT28151B AT 28151 B AT28151 B AT 28151B AT 28151D A AT28151D A AT 28151DA AT 28151 B AT28151 B AT 28151B
- Authority
- AT
- Austria
- Prior art keywords
- cellulose
- threads
- solutions
- shiny threads
- thread
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 description 11
- 239000001913 cellulose Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JCRJMSQFBRGSSX-UHFFFAOYSA-L copper;azane;carbonate Chemical compound N.[Cu+2].[O-]C([O-])=O JCRJMSQFBRGSSX-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung glänzender Fäden.
Es sind schon Verfahren bekannt, die es ermöglichen, aus Zellulose glänzende Faden herzustellen. So die Verfahren von Despaisis und Pauly, welche chemisch darauf beruhen,
EMI1.1
Demgegenüber wurde nun gefunden. dass die sogenannten Kuprammonium-Zelluloselösungen auch in glänzende Fäden verarbeitet werden können, indem man sie durch feinste kapillare Öffnungen nicht in Säuren, sondern in Lösungen von Ätzalkalien austreten lässt.
Der entstehende Faden wird aufgewunden, sodann sukzessive mit Säuren und Wasser gewaschen und schliesslich getrocknet.
Es findet somit eine Fällung der Kuprammonium-Zelluloselösung durch Alkalien statt.
Der scheinbare Widerspruch, der demgegenüber in der Angabe liegt, dass das in KuprammoniumZelluloselösungen enthaltene Hydratationsprodukt in Alkalien löslich ist. findet seine Erklärung darin, dass die durch Ätzalkali in der Kuprammonium-Zelluloselösung entstehende Fällung nicht Zellulose oder ein Hydratationsprodukt derselben als solches ist, sondt'rn vte ! n) ehr eine kupferhaltige Verbindung.
Der, wie angegeben, in einen elastischen Faden formieren kupferhaltigen Verbindung wird durch Säure das Kupfer entzogen, ohne dass der Faden in seiner Stabilität :, in Der mit Wasser gewaschene und dann getrocknete Faden zeichnet sich durch Feinheit.
Glanz und Stabilität auch in feuchtem Zustande aus.
An Stelle der Lösung von Zellulose in Kuprommoniumlösungen, wie Kupferoxyd- ammoniak und Kupferkarbonatammoniak, kann man diejenigen verwenden, die vermittelst der Hydratationsprodukte der Zellulose, in der chemischen Literatur meist als Hydrozellulose oder Zellulosehydrat bezeichnet, erhalten werden.
Die Konzentration der zur Fällung der Kuprammonium-Zelluloselösung dienenden Alkalilösungen kann innerhalb weiter Grenzen gewählt werden, auch mit Seiger Natron- lauge kann man noch einen haltbaren Faden erhalten, wenn die Konzentration der zit fällenden Zelluloselösung nicht zu klein ist. Grosse Konzentration der Alkalilösung ist nur günstig. Je enger die Kapillaren genommen werden, um so feinere Fäden werden erhalten.
Ein beispiel für das Verfahren ist folgendes : Man verwendet eine 5O/oige Auflösung
EMI1.2
vorbeifliesst. Der entstehende Faden wird sofort auf eine rotierende Trommel aufgenommen, mit Wasser abgespült, dann sukzessive mit 120, Schwefelsäure und mit Wasser gewaschen und schliesslich getrocknet.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Method of making shiny threads.
Processes are already known which make it possible to produce shiny threads from cellulose. So the processes of Despaisis and Pauly, which are chemically based on
EMI1.1
In contrast, it has now been found. that the so-called cuprammonium cellulose solutions can also be processed into shiny threads by letting them escape through the finest capillary openings not in acids but in solutions of caustic alkalis.
The resulting thread is wound up, then washed successively with acids and water and finally dried.
Thus, the cuprammonium cellulose solution is precipitated by alkalis.
The apparent contradiction that lies in the statement that the hydration product contained in cuprammonium cellulose solutions is soluble in alkalis. finds its explanation in the fact that the precipitate produced by caustic alkali in the cuprammonium-cellulose solution is not cellulose or a hydration product of the same as such, probes! n) or rather a copper-containing compound.
The copper-containing compound, which is formed into an elastic thread as indicated, is removed by acid, without affecting the stability of the thread: The thread washed with water and then dried is characterized by delicacy.
Shine and stability even when damp.
Instead of the solution of cellulose in cuprommonium solutions, such as copper oxide ammonia and copper carbonate ammonia, one can use those which are obtained by means of the hydration products of cellulose, usually referred to in the chemical literature as hydrocellulose or cellulose hydrate.
The concentration of the alkali solutions used to precipitate the cuprammonium cellulose solution can be chosen within wide limits, even with Seiger caustic soda you can still get a durable thread if the concentration of the cellulose solution that is precipitated is not too small. High concentration of the alkali solution is only beneficial. The narrower the capillaries, the finer the filaments.
An example of the method is as follows: A 50% resolution is used
EMI1.2
flow past. The resulting thread is immediately taken up on a rotating drum, rinsed with water, then washed successively with 120% sulfuric acid and with water and finally dried.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT28151T | 1904-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT28151B true AT28151B (en) | 1907-04-25 |
Family
ID=3540719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT28151D AT28151B (en) | 1904-10-31 | 1904-10-31 | Method of making shiny threads. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT28151B (en) |
-
1904
- 1904-10-31 AT AT28151D patent/AT28151B/en active
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