DE915850C - Process for accelerating the dissolution of cellulose xanthate - Google Patents
Process for accelerating the dissolution of cellulose xanthateInfo
- Publication number
- DE915850C DE915850C DET1537D DET0001537D DE915850C DE 915850 C DE915850 C DE 915850C DE T1537 D DET1537 D DE T1537D DE T0001537 D DET0001537 D DE T0001537D DE 915850 C DE915850 C DE 915850C
- Authority
- DE
- Germany
- Prior art keywords
- cellulose
- dissolution
- cellulose xanthate
- xanthate
- accelerating
- 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
- 229920002678 cellulose Polymers 0.000 title claims description 21
- 239000001913 cellulose Substances 0.000 title claims description 21
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 title claims description 16
- 239000012991 xanthate Substances 0.000 title claims description 16
- 238000004090 dissolution Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 229920000297 Rayon Polymers 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- D01F2/08—Composition of the spinning solution or the bath
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Verfahren zur Beschleunigung des Auflösens von Cellulosexanthogenat Das Lösen des sehr stark quellenden Cellulosexanthogenats erfolgt gewöhnlich unter starker mechanischer Einwirkung durch Rühren, Zerreiben und Quetschen, um gleichmäßige Lösungen zu erzielen. Obwohl das Cellulosexanthogenat an sich wasserlöslich ist, verwendet man, da eine wäßr.ige Cellulosexanthogenatlösung infolge unmittelbar eintretender Hydrolyse zu unbeständig sein würde, gewöhnlich eine verdünnte Natronlauge als Lösungsmittel. Ob es sich bei dem Auflösen des Cellulosexanthogenats um einen chemischen Vorgang handelt oder nur um eine unter Quellung erfolgende Dispergierung des Dispersionsmittels, ist noch nicht geklärt. Auf alle Fälle spielt der Quellungsvorgang bei der Auflösung eine ganz wesentliche Rolle, und die Dauer des Lösens sowie die Beschaffenheit der erzielten Viscose sind von den Quellungseigenschaften des Xanthogenats weitgehend abhängig.Process for accelerating the dissolution of cellulose xanthate The dissolving of the very strongly swelling cellulose xanthate usually takes place under strong mechanical action by stirring, grinding and squeezing in order to achieve uniform To achieve solutions. Although the cellulose xanthate is soluble in water, is used because an aqueous cellulose xanthate solution as a result of immediately occurring Hydrolysis would be too volatile, usually a dilute sodium hydroxide solution as a solvent. Whether the dissolution of the cellulose xanthate is a chemical process or just a dispersion of the dispersant with swelling, has not yet been clarified. In any case, the swelling process plays a role in the dissolution a very important role, and the duration of the release as well as the nature of the Viscose obtained are largely due to the swelling properties of the xanthate addicted.
Es wurde nun gefunden, daß man eine wesentliche Beschleunigung und Verbesserung des Auflösens von Cellulosexanthogenaten erzielen kann, wenn man eine cellulosexanthogenathaltige Natronlauge mit einem Cellulosegehalt von 2 bis 3'/o zum Auflösen von Cellulosexanthogenat verwendet.It has now been found that you can get a substantial acceleration and Improvement in the dissolution of cellulose xanthogenates can be achieved by using a Cellulose xanthogenate sodium hydroxide solution with a cellulose content of 2 to 3% used to dissolve cellulose xanthate.
Durch diese Maßnahme wird eine beträchtliche Beschleunigung der Herstellung der Viscoselösung erzielt und infolgedessen die Lösung der betreffenden Einrichtung ganz wesentlich verbessert. Die Beschaffenheit der aus einer solcherart hergestellten Viscose erzielten Fäden oder Fasern unterscheidet sich in nichts von einem nach den bisher üblichen Verfahren gewonnenen Produkt.This measure speeds up production considerably the viscose solution achieved and consequently the solution of the facility concerned very much improved. The nature of the manufactured from such a Viscose The threads or fibers achieved do not differ in any way from one after the previous one product obtained using the usual methods.
Beispiel Nach dem Entleeren einer Xanthatmaschine von io cbm Inhalt wird das an den Wänden haftende Cellulosexanthogenat in einer 2o%igen Natronlauge gelöst. Diese cellulosexanthogenathaltige Lauge wird so lange zum Weiterlösen von Cellulosexanthogenat anderer entleerter Xanthatmaschinen benutzt, bis sie einen Cellulosegehalt von etwa .4% aufweist. Man stellt die cellulosexanthogenathaltige 2o%ige Lauge dann auf eine für Löselauge übliche Konzentration, also beispielsweise 22% ein, so daß sie einen Cellulosegehalt von etwa 2% besitzt. In dieser Form wird sie zum Auflösen von Cellulosexanthogenat verwendet.Example After emptying a xanthate machine from io cbm content the cellulose xanthate adhering to the walls is dissolved in a 20% sodium hydroxide solution solved. This lye containing cellulose xanthogenate will continue to dissolve for so long Used cellulose xanthate from other dumped xanthate machines until they get one Has cellulose content of about .4%. One sets the cellulose xanthogenate 20% lye then to a concentration that is usual for dissolving lye, for example 22% so that it has a cellulose content of about 2%. In this form will they used to dissolve cellulose xanthate.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET1537D DE915850C (en) | 1942-09-22 | 1942-09-22 | Process for accelerating the dissolution of cellulose xanthate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET1537D DE915850C (en) | 1942-09-22 | 1942-09-22 | Process for accelerating the dissolution of cellulose xanthate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE915850C true DE915850C (en) | 1954-07-29 |
Family
ID=7543485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET1537D Expired DE915850C (en) | 1942-09-22 | 1942-09-22 | Process for accelerating the dissolution of cellulose xanthate |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE915850C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL49824C (en) * |
-
1942
- 1942-09-22 DE DET1537D patent/DE915850C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL49824C (en) * |
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