DE339050C - Process for the felling of cellulose from viscose - Google Patents
Process for the felling of cellulose from viscoseInfo
- Publication number
- DE339050C DE339050C DE1918339050D DE339050DD DE339050C DE 339050 C DE339050 C DE 339050C DE 1918339050 D DE1918339050 D DE 1918339050D DE 339050D D DE339050D D DE 339050DD DE 339050 C DE339050 C DE 339050C
- Authority
- DE
- Germany
- Prior art keywords
- viscose
- cellulose
- felling
- salt
- precipitation
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Description
Verfahren zur Fällung von Zellulose aus Viskose. Es ist bekannt, aus Viskoselösungen die Zellulose durch verdünnte Säure zu fällen, der neutrale Salze und besonders Sulfate zugesetzt sind, die die lösende Wirkung des Verdünnungswassers auf die Zellulose aufheben sollen. Bekannt ist ferner die Tatsache, daß auch gesättigte Salzlösungen mit oder ohne Säurezusatz fällend auf Viskose wirken.Process for the precipitation of cellulose from viscose. It is known from Viscose solutions precipitate the cellulose by dilute acid, the neutral salts and especially sulfates are added, which reduce the dissolving effect of the dilution water to pick up the cellulose. It is also known that saturated Salt solutions with or without the addition of acid have a precipitating effect on viscose.
Hiernach war nicht zu erwarten, daß man der Viskoselösung größere Salzmengen einverleiben könne, ohne daß Fällung einträte. Versuche haben gezeigt, daß dies dennoch möglich ist: Man kann einer Viskoselösung sogar große Mengen (io Prozent und mehr) eines Salzes wie wasserfreies Natriumsulfat einverleiben, ohne daß Koagulation eintritt. Eine solche mit Salz beladene Lösung läßt sich dann durch Einspritzen in reine; wäßrige Schwefelsäure verspinnen. Das erhaltene Produkt ist von großer Stärke .und hohem Glanz. Dieses Ergebnis dürfte darauf zurückzuführen sein, daß das Salz in konzentriertester Form an der Stelle der Fadenbildung mit der Viskose vereinigt ist. Infolgedessen eignet sich das neue Verfahren in besonders hohem Maße zur Ausfällung von Viskoselösungen.According to this, it was not to be expected that the viscose solution would be larger Can incorporate amounts of salt without precipitation occurring. Tests have shown that this is still possible: You can even add large amounts (io Percent and more) of a salt such as anhydrous sodium sulfate, without that coagulation occurs. Such a solution laden with salt can then pass through Injecting pure; Spin aqueous sulfuric acid. The product obtained is of great strength. and high gloss. This result is likely to be attributed to it be that the salt in the most concentrated form at the point of thread formation with the viscose is combined. As a result, the new method is particularly suitable to a large extent for the precipitation of viscose solutions.
Außer Natriumsulfat kann man z. B. auch Natriumnitrat und Natriumchlorid oder Salze organischer Säuren wie Natriumazetat und Natriumoleat oder Gemische dieser Salze verwenden.In addition to sodium sulfate, you can, for. B. also sodium nitrate and sodium chloride or salts of organic acids such as sodium acetate and sodium oleate or mixtures of these Use salts.
Beispiel. bis io Teile wasserfreien Natriumsulfats oder 5 bis 2o Teile Kochsalz oder Salpeter werden in ioo Teilen Viskoselösung gelöst. Die Lösung wird, nachdem sie genügend gereift ist -was bei einem Zusatz von 5 Prozent Natriumsulfat bei Zimmertemperatur etwa & Tage erfordert - versponnen. Als Fallbad wird etwa 2oprozentige Schwefelsäure benutzt.Example. up to 10 parts of anhydrous sodium sulfate or 5 to 20 parts Table salt or saltpetre are dissolved in 100 parts of viscose solution. The solution is after it has matured sufficiently - what if 5 percent sodium sulfate was added Requires about & days at room temperature - spun. As a fall bath is about 2% sulfuric acid used.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE339050T | 1918-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE339050C true DE339050C (en) | 1921-07-12 |
Family
ID=6223209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1918339050D Expired DE339050C (en) | 1918-10-12 | 1918-10-12 | Process for the felling of cellulose from viscose |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE339050C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439039A (en) * | 1944-09-26 | 1948-04-06 | American Viscose Corp | Process of producing medullated artificial filaments |
DE833705C (en) * | 1948-10-29 | 1952-03-10 | Phrix Werke Ag | Process for the production of artificial pools |
-
1918
- 1918-10-12 DE DE1918339050D patent/DE339050C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439039A (en) * | 1944-09-26 | 1948-04-06 | American Viscose Corp | Process of producing medullated artificial filaments |
DE833705C (en) * | 1948-10-29 | 1952-03-10 | Phrix Werke Ag | Process for the production of artificial pools |
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