DE222873C - - Google Patents
Info
- Publication number
- DE222873C DE222873C DENDAT222873D DE222873DA DE222873C DE 222873 C DE222873 C DE 222873C DE NDAT222873 D DENDAT222873 D DE NDAT222873D DE 222873D A DE222873D A DE 222873DA DE 222873 C DE222873 C DE 222873C
- Authority
- DE
- Germany
- Prior art keywords
- threads
- ammonia
- copper
- solutions
- salts
- 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
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- -1 copper tetramine salts Chemical class 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005406 washing Methods 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
- D01F2/02—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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- Ja 222873 KLASSE 296. GRUPPE- Yes 222873 CLASS 296th GROUP
Es ist bekannt, Zellulose zur Herstellung von seidenähnlichen Fäden und sonstigen glänzenden Gebilden aus ihren Kupferoxydammoniaklösungen mit Hilfe von Säuren, Laugen oder Salzen zu fällen. Die Koagulation beruht darauf, daß das Lösungsmittel für die Kupferzellulose, das Ammoniak, den zunächst flüssigen Gebilden entzogen wird.It is known to use cellulose for the production of silk-like threads and others shiny structures from their copper oxide ammonia solutions with the help of acids and alkalis or to precipitate salts. The coagulation is based on the fact that the solvent for the Copper cellulose, ammonia, which is initially removed from liquid structures.
Es wurde nun gefunden, daß unter den ίο Salzen diejenigen des Ammoniaks in wässeriger Lösung besonders vorteilhaft wirken, und zwar im Sinne der folgenden Gleichung:It has now been found that among the ίο salts those of ammonia in watery Solution are particularly advantageous, in the sense of the following equation:
Cu (O H)2 (N HJ2 - C6 H10 O =: Cu- 4(N HJ Cu (OH) 2 (N HJ 2 - C 6 H 10 O =: Cu- 4 (N HJ
6 10 5 + (N HJ2 SO, SO, + C6H10O5 + 2 H2O. 6 10 5 + (N HJ 2 SO, SO, + C 6 H 10 O 5 + 2 H 2 O.
Sie treten also nicht nur, wie andere Salze, rein physikalisch, sondern auch chemisch mit den zu koagulierenden viskosen Lösungen in Wechselwirkung, indem sie den Fäden bei der Koagulation sowohl das Kupfer als auch das Ammoniak unter Bildung von Kupfertetraminsalzen entziehen, die sich durch Auswaschen mit Wasser, dem gegebenenfalls nur wenig Essigsäure beizumischen ist, völlig entfernen lassen.So, like other salts, they not only occur physically, but also chemically the viscous solutions to be coagulated in interaction by the threads in the Both the copper and ammonia coagulate to form copper tetramine salts which can be completely removed by washing out with water to which only a little acetic acid may need to be added permit.
Man erhält auf diese Weise mittels indifferenter Salzlösungen unmittelbar, ohne daß Ammoniakdämpfe auftreten, kupferfreie Fäden, die sonst nur mittels starker Säuren erhältlich sind, und vermeidet dabei Hydrozellulosebildung und Sprödewerden der Fäden, die die Säurebäder im Gefolge haben.In this way, by means of indifferent salt solutions, one obtains directly without Ammonia vapors occur, copper-free threads that are otherwise only obtainable by means of strong acids and avoids the formation of hydrocellulose and the brittleness of the threads that make up the Have acid baths in the wake.
Glanz und Festigkeit der gewonnenen Gebilde können dadurch erhöht werden, daß man sie in an sich bekannter Weise mit Lauge nachbehandelt, indem man z. B. die auf die Spinnwalze aufgelaufenen Fäden in konzentrierter, gegebenenfalls gekühlter Lauge rotieren läßt.The gloss and strength of the structures obtained can be increased in that they are aftertreated in a manner known per se with lye by z. B. on the Rotate the spinning roller accumulated threads in concentrated, optionally cooled lye leaves.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE222873C true DE222873C (en) |
Family
ID=483732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT222873D Active DE222873C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE222873C (en) |
-
0
- DE DENDAT222873D patent/DE222873C/de active Active
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