DE260650C - - Google Patents
Info
- Publication number
- DE260650C DE260650C DE1908260650D DE260650DA DE260650C DE 260650 C DE260650 C DE 260650C DE 1908260650 D DE1908260650 D DE 1908260650D DE 260650D A DE260650D A DE 260650DA DE 260650 C DE260650 C DE 260650C
- Authority
- DE
- Germany
- Prior art keywords
- ammonia
- cellulose
- solution
- ice
- 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.)
- Expired - Lifetime
Links
- 229920002678 cellulose Polymers 0.000 claims description 11
- 239000001913 cellulose Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 claims description 3
- UXIJQZSBOOKEKZ-UHFFFAOYSA-N O.[Cu]=O Chemical compound O.[Cu]=O UXIJQZSBOOKEKZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 150000001879 copper Chemical class 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000005750 Copper hydroxide Substances 0.000 description 3
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper(II) hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 3
- 229910001956 copper hydroxide Inorganic materials 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000036826 Excretion Effects 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000414 obstructive Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/006—Preparation of cuprammonium cellulose solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-■ M 260650 KLASSE 29 b. GRUPPE- ■ M 260650 CLASS 29 b. GROUP
zelluloselösungen.cellulose solutions.
Patentiert im Deutschen Reiche vom 19. Mai 1908 ab.Patented in the German Empire on May 19, 1908.
Die Herstellung von ammoniakarmen Kupferoxydammoniakzelluloselösungen geschieht bisher in der Weise, daß man Zellulose, Kupfer oder Kupferoxydhydrat und wässeriges Ammoniak unter äußerer Kühlung zur Lösung bringt und den für die Herstellung der Lösung zunächst erforderlichen, beim Verspinnen der fertigen Lösung aber hinderlichen Überschuß an Ammoniak vor dem Spinnprozeß, ζ. Β.The production of low-ammonia copper oxide ammonia cellulose solutions So far it has been done in such a way that cellulose, copper or copper oxide hydrate and aqueous ammonia are used brings to the solution with external cooling and the first required for the preparation of the solution when spinning the finished solution but an obstructive excess of ammonia before the spinning process, ζ. Β.
to durch Absaugen im Vakuum, entfernt.to by suction in a vacuum, removed.
Gegenstand der Erfindung ist nun ein Verfahren, mit dessen Hilfe man unmittelbar beim Löseprozeß mit der für die fertige Spinnlösung gerade noch erforderlichen Menge Ammoniak auskommt; während man also bisher auf ι kg Zellulose etwa 3 kg NH3 brauchte, genügt nach dem neuen Verfahren 1 kg 2Wi3.The subject matter of the invention is a method by means of which the amount of ammonia just needed for the finished spinning solution can be used directly during the dissolving process; While up to now about 3 kg of NH 3 were required for 1 kg of cellulose, 1 kg of 2Wi 3 is sufficient according to the new process.
Das Verfahren besteht darin, daß man dieThe procedure is that you have the
Bildung der Kupferoxydammoniakzelluloselösung in Gegenwart von Eis in Stücken vor sich gehen läßt.Formation of the copper oxide ammonia cellulose solution in the presence of ice in pieces lets go.
Zu 100 kg Baumwolle werden 400 1 konzentriertes, d. i. 25 prozentiges Ammoniak und 40 kg Kupfer in Form von Kupferoxydhydrat gebracht, worauf man 500 kg Eis in Stücken einträgt. Nach etwa einstündigem Rühren ist alles gelöst.For 100 kg of cotton, 400 l of concentrated, d. i. 25 percent ammonia and 40 kg of copper brought in the form of copper oxide hydrate, whereupon 500 kg of ice in pieces enters. After stirring for about an hour, everything is dissolved.
Die überraschende Ammoniakersparnis hat ihren Grund in der niedrigen Temperatur, bei der die Reaktionen vor sich gehen, und der hohen Ammoniakkonzentration am Anfang; denn Ammoniak und Eis bilden eine Kältemischung mit Temperaturen unter o°, die Löslichkeit von Kupferhydroxyd in Ammoniak 40 The surprising ammonia saving is due to the low temperature at which the reactions take place and the high ammonia concentration at the beginning; because ammonia and ice form a cold mixture with temperatures below 0 °, the solubility of copper hydroxide in ammonia 40
4545
steigt aber mit fallender Temperatur. Dieselbe Menge Kupferhydroxyd braucht also zur Lösung um so weniger, je niedriger die Temperatur ist.but increases with falling temperature. So the same amount of copper hydroxide is needed The lower the temperature, the less the solution.
Außerdem löst sich in 400 1 25 prozentigem Ammoniak mehr Kupferhydroxyd als in 900 1 mit der gleichen absoluten Menge NH3. Würde man in obigem Beispiel von vornherein die Ammoniakkonzentration so wählen, wie sie nach dem Schmelzen des Eises endgültig vorhanden ist, also etwa 11 prozentig, so würde man selbst bei Temperaturen von — 2i° nicht zum Ziele kommen.In addition, more copper hydroxide dissolves in 400 1 25 percent ammonia than in 900 1 with the same absolute amount of NH 3 . If, in the above example, one were to select the ammonia concentration from the start as it is finally present after the ice has melted, i.e. about 11 percent, one would not achieve the goal even at temperatures of -2i °.
Läßt man bei der Ausführung des neuen Verfahrens das Reaktionsgefäß z. B. nach Art einer Kugelmühle rotieren, so wirken die festen Eisstücke wie die Kugeln in einer solchen Mühle, indem sie die Zellulosemassen zerrühren. Durch das langsam entstehende Schmelzwasser wird die Zelluloselösung außerdem allmählich verdünnt ohne Ausscheidung von Zellulose, wie sie eintreten würde, wenn man eine konzentrierte Zelluloselösung mit größeren Mengen Wasser auf einmal versetzen würde.If you let the reaction vessel z. B. according to Art Rotate in a ball mill, the solid pieces of ice act like the balls in one Grind by stirring the cellulose masses. Because of the slowly emerging meltwater the cellulose solution is also gradually diluted without excretion of cellulose, as would occur if one add large amounts of water to a concentrated cellulose solution at once would.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT64081D AT64081B (en) | 1908-05-18 | 1909-03-31 | Process for the production of concentrated, low-ammonia copper oxide ammonia cellulose solutions. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE260650C true DE260650C (en) |
Family
ID=518281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1908260650D Expired - Lifetime DE260650C (en) | 1908-05-18 | 1908-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE260650C (en) |
-
1908
- 1908-05-18 DE DE1908260650D patent/DE260650C/de not_active Expired - Lifetime
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