AT11066B - Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. - Google Patents
Process for the production of high-percentage solutions of cellulose in chlorzinc solutions.Info
- Publication number
- AT11066B AT11066B AT11066DA AT11066B AT 11066 B AT11066 B AT 11066B AT 11066D A AT11066D A AT 11066DA AT 11066 B AT11066 B AT 11066B
- Authority
- AT
- Austria
- Prior art keywords
- solutions
- cellulose
- production
- percentage
- chlorzinc
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims description 14
- 239000001913 cellulose Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- ZXYNGLRGFYLTQZ-UHFFFAOYSA-M [Zn]Cl Chemical compound [Zn]Cl ZXYNGLRGFYLTQZ-UHFFFAOYSA-M 0.000 title 1
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 12
- 235000005074 zinc chloride Nutrition 0.000 claims description 6
- 239000011592 zinc chloride Substances 0.000 claims description 6
- 229920002955 Art silk Polymers 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- ICGLOTCMOYCOTB-UHFFFAOYSA-N [Cl].[Zn] Chemical compound [Cl].[Zn] ICGLOTCMOYCOTB-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
Description
<Desc/Clms Page number 1>
DR. EMIL BRONNERT
EMI1.1
Verfahren zur Herstellung von hochprozentigen Lösungen von Cellulose in Chlorzink- lösungen.
Es ist bekannt, dass Cellulose sich in einer konzentrierten Chlorzinklösung löst, besonders wenn das Losen bei etwa 1000 r. vorgenommen wird, und dass eine derartig hergestellte Lösung zur Erzeugung künstlicher Seidenfäden anwendbar ist.
Es hat sich jedoch herausgestellt, dass hiebei nur ein geringer Prozentsatz von Cellulose und zwar höchstens etwa 40/0 in Lösung gehen und dass ausserdem die zur Her- stellung der Lösung erforderliche Warme eine tiefer greifende Zersetzung wenigstens eines grösseren Anteiles der Celiulose bedingt, wodurch die Festigkeit der daraus hergestellten Faden sehr ungünstig beeinflusst wird.
Man hat daher vorgeschlagen, um geeignetere und höher prozentige Celluloselösungen mittelst Chlorzink darzustellen, die Cellulose zunächst vor dem Lösen in energischer Weise mit oxydierenden Bleichmitteln zu behandeln ; indessen ist ein solches Verfahren wenig geeignet, da die Cellulose, obwohl höher prozentige Lösungen erhalten werden, ebenfalls leicht eine zu weitgehende Veränderung erleidet, indem Oxycellulose gebildet wird, so dass die aus einer so bereiteten Lösung hergestellten
EMI1.2
bringt, wodurch gleichfalls die so vorbereitete Cellulose ohne Anwendung höherer Tempe- raturen und ohne chemische Veränderungen in konzentrierter Chlorzinklösung in grösseren Mengen (80% und mehr) als bisher möglich war,
gelöst werden kann, so dass eine solche Lösung im besonderen zur Erzeugung fester, ohne Anwendung von Beize zu färbender künstlicher Seidenfäden geeignet ist. Abgeschleuderte Cellulose, welche nach dem Verfahren des Patentes Nr. 8596 aufgeschlossen worden ist und im Trockengehalt etwa 80 kg
EMI1.3
getost und fadenxifhend geworden ist.
Das Wesen und Neue der vorliegenden Erfindung der Herstellung spinnfähiger Lösungen besteht also darin, dass die nach dem Patent Nr. 8596 vorbereitete Cellulose bei niedriger, die Zersetzung ausschliessender Temperatur in konzentrierter Chlorzinklauge gelöst wird, statt wie bisher gewöhnliche Cellulose in heisser Chlorzinklauge, wodurch aber keine spinnfähigen Lösungen erzielt wurden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
DR. EMIL BRONNERT
EMI1.1
Process for the production of high-percentage solutions of cellulose in zinc chloride solutions.
It is known that cellulose dissolves in a concentrated zinc chloride solution, especially when the dissolving occurs at around 1000 r. is made, and that a solution produced in this way can be used for the production of artificial silk threads.
It has been found, however, that only a small percentage of cellulose, namely at most about 40/0, go into solution and that the heat required to produce the solution also causes more profound decomposition of at least a larger proportion of the cellulose, which causes the Strength of the thread produced therefrom is very unfavorable.
It has therefore been proposed, in order to produce more suitable and higher percentage cellulose solutions by means of zinc chloride, to first treat the cellulose vigorously with oxidizing bleaches before dissolving it; however, such a process is not very suitable, since the cellulose, although higher percent solutions are obtained, also easily undergoes too extensive a change in that oxycellulose is formed, so that those produced from a solution prepared in this way
EMI1.2
brings, whereby the cellulose prepared in this way was also possible without the use of higher temperatures and without chemical changes in a concentrated zinc chloride solution in larger quantities (80% and more) than before,
can be dissolved, so that such a solution is particularly suitable for producing solid artificial silk threads that can be dyed without the use of stain. Spun-off cellulose, which has been digested according to the process of patent no. 8596 and has a dry content of about 80 kg
EMI1.3
has gotten and fadenxifhend.
The essence and novelty of the present invention of the production of spinnable solutions consists in the fact that the cellulose prepared according to patent no. 8596 is dissolved in concentrated zinc chloride liquor at a low temperature excluding decomposition, instead of the usual cellulose in hot zinc chlorine liquor as previously, but none spinnable solutions were achieved.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT11066D AT11066B (en) | 1899-09-28 | 1899-10-02 | Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT8596T | 1899-09-28 | ||
| AT11066D AT11066B (en) | 1899-09-28 | 1899-10-02 | Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT11066B true AT11066B (en) | 1903-03-10 |
Family
ID=25594123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT11066D AT11066B (en) | 1899-09-28 | 1899-10-02 | Process for the production of high-percentage solutions of cellulose in chlorzinc solutions. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT11066B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150377338A1 (en) * | 2013-02-22 | 2015-12-31 | Magna Powertrain Ag & Co Kg | Gearbox housing and method for producing a gearbox housing |
-
1899
- 1899-10-02 AT AT11066D patent/AT11066B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150377338A1 (en) * | 2013-02-22 | 2015-12-31 | Magna Powertrain Ag & Co Kg | Gearbox housing and method for producing a gearbox housing |
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