DE236297C - - Google Patents
Info
- Publication number
- DE236297C DE236297C DENDAT236297D DE236297DA DE236297C DE 236297 C DE236297 C DE 236297C DE NDAT236297 D DENDAT236297 D DE NDAT236297D DE 236297D A DE236297D A DE 236297DA DE 236297 C DE236297 C DE 236297C
- Authority
- DE
- Germany
- Prior art keywords
- methyl alcohol
- thread
- sodium hydroxide
- alcohol
- hydroxide solution
- 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.)
- Active
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 235000002639 sodium chloride Nutrition 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000020477 pH reduction Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 9
- 229920002678 cellulose Polymers 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229920002955 Art silk Polymers 0.000 description 1
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulant Effects 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002759 woven fabric Substances 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
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
- D01F2/04—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts from cuprammonium solutions
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
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVr 236297 ~~ KLASSE 29 b. GRUPPE - JVr 236297 ~~ CLASS 29 b. GROUP
THEODOR ECK in LODZ.THEODOR ECK in LODZ.
Bekanntlich ist das Verwendungsgebiet der zur Zeit hergestellten künstlichen Seide ein nur beschränktes infolge ihrer geringen Festigkeit in trockenem, besonders aber in nassem Zustande. Namentlich für Webstoffe ist sie dadurch ungeeignet. Die Ursache der geringen Festigkeit des künstlichen Fadens namentlich in angefeuchtetem Zustande ist darin zu suchen, daß die Zellulose aus ihren wässerigen LösungenAs is well known, the field of application of the artificial silk currently produced is only one limited due to their low strength in the dry, but especially in the wet condition. This makes it particularly unsuitable for woven fabrics. The cause of the low strength of the artificial thread, especially when it is moistened, is to be sought in the fact that the cellulose from its aqueous solutions
ίο durch die üblichen Fällungsmittel als Zellulosehydrat gefällt wird , welches in Wasser stark aufquillt.ίο through the usual precipitants as cellulose hydrate is precipitated, which swells strongly in water.
Nach vorliegendem Verfahren läßt sich nun ein künstlicher Faden herstellen, welcher in nassem und trockenem Zustande bedeutend höhere Festigkeit besitzt als die nach bekannten Verfahren hergestellten. Es hat sich erwiesen, daß es möglich ist, dem Zellulosehydrat gleich bei der Koagulation das Hydratwasser zu entziehen, wenn man als Fällungsbad Natron- oder Kalilauge in gewisser Stärke anwendet und dieser wasserentziehende Mittel zusetzt. Man erzielt damit nicht nur höhere Festigkeit, sondern auch höheren Glanz und bessere Gleichmäßigkeit des Fadens als mit Natronlauge als Koagulationsbad allein. In der französischen Patentschrift 369957 findet sich über die Verwendung von alkoholischen Alkalien als Fäl-„lungsbad eine Andeutung, jedoch ist an dieser Stelle weder gesagt, welcher Alkohol und welche Konzentration der Natronlauge die Dehydratisierung der Zellulose bewirkt, noch ist angegeben, daß für diesen Zweck nur Kupferoxydammoniakzelluloselösung verwendbar ist.According to the present method, an artificial thread can now be produced, which in wet and dry has significantly higher strength than that of the known Process produced. It has been shown to be possible like cellulose hydrate to withdraw the water of hydration during coagulation when using sodium or soda as a precipitation bath Use potassium hydroxide solution in a certain strength and add dehydrating agents to it. Man not only achieves higher strength, but also higher gloss and better uniformity of the thread than with caustic soda as a coagulation bath alone. In the French patent 369957 there is about the use of alcoholic alkalis as a precipitation bath a hint, but it is not stated at this point which alcohol and which concentration of sodium hydroxide solution caused the dehydration of cellulose, nor is it stated that only copper oxide ammonia cellulose solution is used for this purpose is usable.
Es hat sich erwiesen, daß nur der Methylalkohol bei Gegenwart von Natronhydrat imstande ist, dem Zellulosehydrat das Hydratwasser zu entziehen, und zwar in einer Mischung von 10 Teilen Natronlauge 30 bis 40 ° Be. und ix/2 bis 2 Teilen Methylalkohol 99prozentig; zur Erhöhung des Glanzes genügen schon 5 Prozent Methylalkohol zur Lauge. Äthylalkohol allein in Gegenwart von Alkalilauge übt auf den Faden gar keine Wirkung aus. Es hängt dies mit der geringen Löslichkeit des Äthylalkohols in starken Laugen zusammen. In Mischung mit Methylalkohol ist Äthylalkohol in starker Natronlauge löslich, doch bleibt seine Wirkung auf den koagulierenden Faden dem Metyhlalkohol gegenüber zurück. Als wasserentziehendes Mittel hat sich weiter noch Formaldehyd in Mischung mit Natronlauge erwiesen. Die Koagulation erfolgt schon bei gewöhnlicher Temperatur sehr gut, was bei Koagulation mit reiner Lauge nicht der Fall ist; die Temperatur kann aber bis auf 45 ° C. erhöht werden.It has been found that only methyl alcohol in the presence of sodium hydroxide is able to remove the water of hydration from the cellulose hydrate, in a mixture of 10 parts of sodium hydroxide solution at 30 to 40 ° Be. and i x / 2 to 2 parts methyl alcohol 99 percent; 5 percent methyl alcohol is enough to increase the gloss. Ethyl alcohol alone in the presence of alkali has no effect on the thread. This is due to the low solubility of ethyl alcohol in strong alkalis. When mixed with methyl alcohol, ethyl alcohol is soluble in strong sodium hydroxide solution, but its effect on the coagulating thread remains behind the methyl alcohol. Formaldehyde mixed with caustic soda has also proven to be a dehydrating agent. Coagulation takes place very well even at ordinary temperature, which is not the case with coagulation with pure alkali; however, the temperature can be increased up to 45 ° C.
Nach Behandlung der gesponnenen Fäden mit Schwefelsäure zur Entfernung des Kupfers und ■ der Lauge und nachträglichem Waschen wird der Faden getrocknet. Der Faden wird dann wie üblich weiter behandelt. Bei Herstellung starker dicker Fäden (künstliches Roßhaar) kann die Elastizität und Festigkeit noch erhöht werden, wenn man den von Kupfer befreiten und gewaschenen Faden noch in 20 bis 40 ° Be. starke Natronlauge taucht, welche mit Kochsalz oder anderen Salzen gesättigt ist. Durch Säuern und Waschen wird die Lauge entferntAfter treating the spun threads with sulfuric acid to remove the copper and ■ the lye and subsequent washing, the thread is dried. The thread will then treated as usual. When producing strong, thick threads (artificial horsehair) the elasticity and strength can be increased if the copper is removed and washed thread still in 20 to 40 ° Be. strong caustic soda dips, which with table salt or other salts is saturated. The lye is removed by acidification and washing
und der Faden, wie oben angegeben, weiter behandelt.and the thread further treated as indicated above.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE236297C true DE236297C (en) |
Family
ID=495991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT236297D Active DE236297C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE236297C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2512891A (en) * | 1948-05-05 | 1950-06-27 | Celanese Corp | Spinning artificial materials |
DE941009C (en) * | 1943-12-17 | 1956-03-29 | Onderzoekings Inst Res | Process for the production of artificial threads from viscose |
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0
- DE DENDAT236297D patent/DE236297C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE941009C (en) * | 1943-12-17 | 1956-03-29 | Onderzoekings Inst Res | Process for the production of artificial threads from viscose |
US2512891A (en) * | 1948-05-05 | 1950-06-27 | Celanese Corp | Spinning artificial materials |
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