AT41720B - Process for the preparation of durable solutions of copper oxide ammonia. - Google Patents
Process for the preparation of durable solutions of copper oxide ammonia.Info
- Publication number
- AT41720B AT41720B AT41720DA AT41720B AT 41720 B AT41720 B AT 41720B AT 41720D A AT41720D A AT 41720DA AT 41720 B AT41720 B AT 41720B
- Authority
- AT
- Austria
- Prior art keywords
- copper oxide
- preparation
- solutions
- oxide ammonia
- durable
- Prior art date
Links
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
Description
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Verfahren zur Darstellung haltbarer Lösungen von Kupferoxydammoniak.
Die auf bekannte Weise bereiteten Lösungen von Kupferoxydammoniak besitzen eine sehr geringe Haltbarkeit, d. h. ihre Fähigkeit Cellulose zu lösen, nimmt sehr schnell ab. wodurch die Verwendung zur Fabrikation künstlicher Seide und zur Bereitung wasserdichter Gewebe stark beeinträchtigt wird. Diese Unbeständigkeit beruht darauf, dass schon bei ge- wöhnlicher Tmeperatur langsam, bei etwas erhöhter Temperatur rascher Kupferhydroxyd aus der Lösung abgeschieden wird.
Es wurde nun gefunden, dass sich die Haltbarkeit der Kupferoxydammoniaklösungen durch Zusatz organischer Stoffe erhöhen lässt. Als besonders geeignet haben sich die mehr-
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auch ohne jede Kühlung Lösungen von erheblich höherem Kupfergehalt als sonst, und zwar solche von I'roz. ent und darüber mit Leichtigkeit erzielen.
Zur Erzielung der Haltbarkeit genügt bereits ein Zusatz von 1 bis 2 Prozent der angeführten Substanzen. Kupferoxydulammoniak ist, wie festgestellt wurde, in den Lösungen nicht vorhanden.
PATENT-ANSPRÜCHE :
1. Verfahren zur Darstellung haltbarer Lösungen von Kupferoxydammoniak, dadurch gekennzeichnet, dass man die auf bekannte Weise bereiteten Lösungen von Kupferoxyd- ammoniak mit geringen Mengen organischer Stoffe, wie mehratomige Alkohole, Zuckerarten. Kohlehydrate odeur gummierten versetzt.
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
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Process for the preparation of durable solutions of copper oxide ammonia.
The solutions of copper oxide ammonia prepared in a known manner have a very short shelf life, i. H. their ability to dissolve cellulose decreases very quickly. which greatly affects its use for the manufacture of artificial silk and for the preparation of waterproof fabrics. This instability is based on the fact that copper hydroxide is slowly deposited from the solution at normal temperatures and more rapidly at a somewhat elevated temperature.
It has now been found that the shelf life of the copper oxide ammonia solutions can be increased by adding organic substances. The more-
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even without any cooling, solutions with a considerably higher copper content than usual, namely those from I'roz. ent and above with ease.
An addition of 1 to 2 percent of the substances listed is sufficient to achieve the shelf life. It was found that copper oxydulammonia is not present in the solutions.
PATENT CLAIMS:
1. A process for the preparation of durable solutions of copper oxide ammonia, characterized in that the solutions of copper oxide ammonia prepared in a known manner with small amounts of organic substances, such as polyatomic alcohols, types of sugar. Carbohydrates or gummed spiked.
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** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE41720X | 1908-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41720B true AT41720B (en) | 1910-04-11 |
Family
ID=5623849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41720D AT41720B (en) | 1908-03-25 | 1909-02-20 | Process for the preparation of durable solutions of copper oxide ammonia. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41720B (en) |
-
1909
- 1909-02-20 AT AT41720D patent/AT41720B/en active
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