CH191822A - Process for the preparation of a new cellulose solution. - Google Patents
Process for the preparation of a new cellulose solution.Info
- Publication number
- CH191822A CH191822A CH191822DA CH191822A CH 191822 A CH191822 A CH 191822A CH 191822D A CH191822D A CH 191822DA CH 191822 A CH191822 A CH 191822A
- Authority
- CH
- Switzerland
- Prior art keywords
- cellulose solution
- preparation
- cellulose
- new cellulose
- dyes
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
Verfahren zur Herstellung einer neuen Zelluloselösung. Es wurde gefunden, dass das Oxyd des Triäthylamins die überraschende Eigenschaft besitzt, unter Bildung von Lösungen von höherer oder geringerer Viskosität die Zel lulose zu lösen. Die Zellulose kann aus der so hergestellten Lösung durch geeignete Fäl- lungsmittPl, wie z. B. Wasser, Alkohol, ver dünnte Säuren usw., wieder abgeschieden werden, wobei, je nach den gewählten Be dingungen, Kunstfäden, Films, Kunstmassen usw. erhalten werden können. Mai) kann von roher, gebleichter oder regenerierter Zellulose ausgehen.
Diese Zellulosearten können in gefärbtem oder ungefärbtem Zustande ver wendet werden. Der Zelluloselösung können auch geeignete Farbstoffe bezw. in Farb stoffe überführbare Produkte zugegeben wer den, die z. B. beim Regenerieren der Zellu lose selbst in Farbstoffe übergeführt werden. Solche Produkte sind z. B. die Schwefelsäure ester der Leukoderivate der Küpenfarbstoffe; ferner solche Ester von oxygruppenhaltigen, wasserunlöslichen Farbstoffen, deren Ester reste löslichmachende Gruppen enthalten, wie z.
B. der Ester, der erhalten wird durch Einwirkenlassen von Chloriden der Disulfo- benzoesäure in Gegenwart von Pyridin auf den Azofarbstoff aus dianotiertem 4.4'-Di- chlor-2-amino-1.1-diphenyläther und dem o-Anisidid der 2.3-Oxynaphthoesäure.
<I>Beispiel:</I> 7 Teile Baumwollinters werden mit 93 Teilen Ti-iäthylarniiroxyd übergossen, gut durcbgeknetet und unter stetem Rühren auf <B>50-70"</B> erwärmt. Die Linters gehen all mählich in Lösung, wobei man eine hoch viskose Zelluloselösung erhält, die durch Ein giessen oder Verspinnen in ein wässeriges Fällbad die Zellulose wieder abscheidet.
Process for the preparation of a new cellulose solution. It has been found that the oxide of triethylamine has the surprising property of dissolving the cellulose with the formation of solutions of higher or lower viscosity. The cellulose can be extracted from the solution prepared in this way by suitable precipitation agents, such as e.g. B. water, alcohol, dilute acids, etc., are deposited again, whereby, depending on the chosen conditions, synthetic threads, films, synthetic materials, etc. can be obtained. May) can start from raw, bleached or regenerated cellulose.
These types of cellulose can be used in a colored or undyed state. The cellulose solution can also bezw suitable dyes. In dyes convertible products added who the z. B. when regenerating the Zellu loose even be converted into dyes. Such products are e.g. B. the sulfuric acid ester of the leuco derivatives of vat dyes; also those esters of oxy-containing, water-insoluble dyes, the esters of which contain residual solubilizing groups, such as.
B. the ester, which is obtained by allowing chlorides of disulfobenzoic acid to act in the presence of pyridine on the azo dye from dianotized 4,4'-dichloro-2-amino-1,1-diphenyl ether and the o-anisidide of 2,3-oxynaphthoic acid.
<I> Example: </I> 7 parts of cotton linters are poured with 93 parts of Ti-iäthylarniiroxyd, kneaded well and heated to <B> 50-70 "</B> with constant stirring. The linters gradually dissolve, whereby a highly viscous cellulose solution is obtained which separates the cellulose again by pouring or spinning in an aqueous precipitation bath.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH191822T | 1936-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH191822A true CH191822A (en) | 1937-07-15 |
Family
ID=4437860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH191822D CH191822A (en) | 1936-04-21 | 1936-04-21 | Process for the preparation of a new cellulose solution. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH191822A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2830685A1 (en) * | 1977-07-26 | 1979-02-15 | Akzona Inc | METHOD FOR PRODUCING A SOLUTION OF CELLULOSE IN AN AMINOXYD |
FR2398759A1 (en) * | 1977-07-26 | 1979-02-23 | Akzona Inc | SOLID RAW MATERIAL FOR THE PREPARATION OF CELLULOSE SOLUTIONS AND ITS PREPARATION PROCESS |
US4416698A (en) | 1977-07-26 | 1983-11-22 | Akzona Incorporated | Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article |
EP0727439A1 (en) * | 1995-02-20 | 1996-08-21 | Korea Institute Of Science And Technology | Pelletized pre-dope granules of cellulose and tertiary amine oxide, cellulosic spinning solution, and process for making them |
-
1936
- 1936-04-21 CH CH191822D patent/CH191822A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2830685A1 (en) * | 1977-07-26 | 1979-02-15 | Akzona Inc | METHOD FOR PRODUCING A SOLUTION OF CELLULOSE IN AN AMINOXYD |
FR2398759A1 (en) * | 1977-07-26 | 1979-02-23 | Akzona Inc | SOLID RAW MATERIAL FOR THE PREPARATION OF CELLULOSE SOLUTIONS AND ITS PREPARATION PROCESS |
US4416698A (en) | 1977-07-26 | 1983-11-22 | Akzona Incorporated | Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article |
EP0727439A1 (en) * | 1995-02-20 | 1996-08-21 | Korea Institute Of Science And Technology | Pelletized pre-dope granules of cellulose and tertiary amine oxide, cellulosic spinning solution, and process for making them |
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