AT124248B - Process for the production of concentrated solutions of cellulose in copper ammonia solutions. - Google Patents
Process for the production of concentrated solutions of cellulose in copper ammonia solutions.Info
- Publication number
- AT124248B AT124248B AT124248DA AT124248B AT 124248 B AT124248 B AT 124248B AT 124248D A AT124248D A AT 124248DA AT 124248 B AT124248 B AT 124248B
- Authority
- AT
- Austria
- Prior art keywords
- cellulose
- copper
- solutions
- alkali
- production
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims description 16
- 239000001913 cellulose Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims 2
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical compound N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 title claims 2
- 239000003513 alkali Substances 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 5
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 5
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 claims 1
- 239000000654 additive Substances 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 238000009987 spinning Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000875 Dissolving pulp Polymers 0.000 description 1
- 241000530268 Lycaena heteronea Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung konzentrierter Lösungen von Zellulose in Kupferannnoniak- lösungen.
Durch das Patent Nr. 121551 ist ein Verfahren zur Herstellung von spinnfähigen Kupferammin- zelluloselösungen geschützt.
Bei diesem Verfahren wird durch Zusammenbringen von Zellulose beliebiger Herkunft mit einer ammoniakalischen Kupfersalzlösung von bestimmtem Alkaligehalt eine Kupferalkalizellulos@r@rhalten, die annähernd die Zusammensetzung :
1 Cu : 2 Alkali + 2 C6Hlo05 : NHs hat. Dabei ist je nach den Arbeitsbedingungen die Kupfermenge meist etwas höher, die Alkalimenge
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abtrennen lässt, enthält das gewonnene Material noch eine gewisse Menge freies Alkali aus der Flotte. Eine zu grosse Alkalimenge erschwert die Herstellung von in bezug auf Zellulose hochkonzentrierten
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gepresste Kupferalkalizellulosefaser mit Wasser gleichmässig befeuchten und den störenden Anteil des Alkalis durch starkes Abpressen entfernen.
Eine andere Möglichkeit zur Beseitigung des störenden Alkalis besteht darin, dass man während der Auflösung der Kupferalkalizellulose zur Abstumpfung von Alkali geeignete Salze, z. B. Kupfersulfat.
Ammonsulfat, Ammonehlorid oder Säuren, z. B. Schwefelsäure, Salzsäure oder Kohlensäure zusetzt.
Als vorteilhaft hat sich eine Kombination der verschiedenen Möglichkeiten erwiesen, indem man z. B. vor dem Auflösen der Kupferalkalizellulosefascr schwach mit Wasser benetzt, abpresst und während der Auflösung eine passend zusammengesetzte wässerige oder schwach ammoniakalische Lösung, z. B. von Ammonsulfat und Kupfersulfat zusetzt.
Auf diesem Wege sind im Vergleich zu den heute üblichen Verfahren zur Auflösung von Zellulose zu honchkonzentrierten spinnfähigen ammoniakalischen Kupferzelluloselösungen beträchtliche Ersparnisse an Kupfer zu erzielen.
Beispiel 1 : 2 Baumwolle werden nach den Beispielen des Patentes Nr. 121551 in Kupferalkalizellulose übergeführt, und das feuchte Fasergut auf 7'5 kg abgepresst. Darauf wird das Material
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71 25% item wässrigem Ammoniak gut durchgerührt. Zu diesem Gemisch werden 2l Kupfersulfatlösung (350 g CuS04. 5 aq in 1l Wasser). 200 cm3 20%ige Ammosulfatlösung nacheinander langsam und unter ausgiebigem Rühren zugesetzt und so lange weiter gerührt, bis die Lösung homogen ist.
Beispiel 2 : 2 kg Zellstoff werden als Kupferalkaliverbindung auf 7'5 kg abgepresst, mit 6 1 Wasser durchfeuchtet und auf ungefähr 6'5 kg abgepresst. Das gut aufgelockerte Pressgut wird mit 31 Wasser,
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zugesetzt, die im Liter 350g CuS04. 5 aq enthält. Nachdem alles gut durchmischt ist, warden 350 cl 10%ige Schwefelsäure langsam unter ausgiebigem Rühren zugesetzt und weiter gerührt bis die Lösung homogen ist.
Beispiel 3 : 2 kg Zellstoff werden in Kupferalkalizellulose übergeführt und nach dem Abpressen auf zirka 7'5 kg in ein Gemisch aus 7 l 25%igem Ammoniak, 3l Wasser, 1#6 l 35%ige Kupforsulfatlösung und 400 cm3 20% ige Ammonsulfatlösung schnell eingetragen und so lange ausgiebig gerührt, bis die
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of concentrated solutions of cellulose in copper annonia solutions.
Patent No. 121551 protects a process for the production of spinnable copper ammine cellulose solutions.
In this process, by combining cellulose of any origin with an ammoniacal copper salt solution with a certain alkali content, an alkaline copper cellulose is obtained that has approximately the following composition:
1 Cu: 2 alkali + 2 C6Hlo05: NHs. Depending on the working conditions, the amount of copper is usually somewhat higher, the amount of alkali
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can be separated, the recovered material still contains a certain amount of free alkali from the liquor. Too large an amount of alkali makes it difficult to produce those that are highly concentrated in relation to cellulose
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Evenly moisten the pressed copper alkali cellulose fiber with water and remove the interfering portion of the alkali by pressing hard.
Another possibility for eliminating the interfering alkali is that, during the dissolution of the copper alkali cellulose, suitable salts, e.g. B. copper sulfate.
Ammonium sulphate, ammonium chloride or acids, e.g. B. added sulfuric acid, hydrochloric acid or carbonic acid.
A combination of the various options has proven to be advantageous by z. B. weakly wetted with water before dissolving the copper alkali cellulose fiber, pressed off and a suitably composed aqueous or weakly ammoniacal solution, z. B. of ammonium sulfate and copper sulfate added.
In this way, in comparison to the processes customary today for dissolving cellulose into honey-concentrated spinnable ammoniacal copper-cellulose solutions, considerable savings in copper can be achieved.
Example 1: 2 cotton are converted into copper alkali cellulose according to the examples of patent no. 121551, and the moist fiber material is pressed down to 7.5 kg. The material is on it
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71 25% item aqueous ammonia thoroughly stirred. 2 liters of copper sulfate solution (350 g of CuSO4. 5 aq in 1 liter of water) are added to this mixture. 200 cm3 of 20% ammonium sulfate solution are added slowly and with thorough stirring one after the other and the mixture is stirred until the solution is homogeneous.
Example 2: 2 kg of cellulose are pressed as a copper alkali compound to 7.5 kg, moistened with 6 l of water and pressed to about 6.5 kg. The well loosened pressed material is mixed with 31 water,
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added that per liter of 350g CuS04. 5 aq contains. After everything is well mixed, 350 cl of 10% sulfuric acid are slowly added with thorough stirring and continued stirring until the solution is homogeneous.
Example 3: 2 kg of cellulose are converted into copper alkali cellulose and, after pressing down to approximately 7.5 kg, quickly into a mixture of 7 l of 25% ammonia, 3 l of water, 1 6 l of 35% copper sulfate solution and 400 cm3 of 20% ammonium sulfate solution entered and stirred thoroughly until the
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** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE121551X | 1927-12-03 | ||
| DE124248X | 1928-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT124248B true AT124248B (en) | 1931-08-25 |
Family
ID=29421216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT124248D AT124248B (en) | 1927-12-03 | 1928-12-13 | Process for the production of concentrated solutions of cellulose in copper ammonia solutions. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT124248B (en) |
-
1928
- 1928-12-13 AT AT124248D patent/AT124248B/en active
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