DE910954C - Process for the production of stabilized aqueous brine from precious metals - Google Patents
Process for the production of stabilized aqueous brine from precious metalsInfo
- Publication number
- DE910954C DE910954C DER2190D DER0002190D DE910954C DE 910954 C DE910954 C DE 910954C DE R2190 D DER2190 D DE R2190D DE R0002190 D DER0002190 D DE R0002190D DE 910954 C DE910954 C DE 910954C
- Authority
- DE
- Germany
- Prior art keywords
- production
- precious metals
- stabilized aqueous
- aqueous brine
- gum arabic
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
Description
Verfahren zur Herstellung stabilisierter wäßriger Sole von Edelmetallen Die deutsche Patentschrift 723 4II bezieht sich auf stabilisierte wäßrige Sole von Edelmetallen, die gekennzeichnet sind durch einen Gehalt von Oxyfluoronfarbstoffen in Form ihrer wasserlöslichen Salze neben gebräuchlichen Schutzkolloiden. Von den letzteren ist für die in der Therapie verwendete Sole vorzugsweise das Gummiarabikum angewandt worden, wie auch aus den Beispielen der genannten Patentschrift hervorgeht. Nun hat aber dieses Schutzkolloid leider verschiedene Nachteile; zunächst lassen sich mit Gummiarabikum hergestellte Sole nur schwer filtrieren; eine Filtration der in der Therapie verwendeten Sole ist aber unbedingt erforderlich. Vor allem aber besteht auch bei Gummiarabikum enthaltenden Injektionsflüssigkeiten immer die Gefahr des Auftretens von Kollapserscheinungen und anderer unerwünschter Nehenwirkungen.Process for the production of stabilized aqueous sols from precious metals the German patent specification 723 4II relates to stabilized aqueous brine of noble metals, which are characterized by a content of oxyfluorone dyes in the form of their water-soluble salts in addition to common protective colloids. Of the latter is gum arabic is preferably used for the brine used in therapy as can also be seen from the examples of the patent mentioned. so but unfortunately this protective colloid has various disadvantages; initially let yourself Difficult to filter brine made with gum arabic; a filtration of the in The brine used in the therapy is absolutely necessary. But above all, there is even with injection liquids containing gum arabic there is always the risk of Occurrence of collapse phenomena and other undesirable side effects.
Es wurde nun bei der Arbeit nach weiterer Vervollkommnung der den Erfindungsgegenstand bildenden Edelmetallsole gefunden, daß die dem Gummiarabikum anhaftenden Nachteile vermieden werden können, wenn man statt seiner Polyvinylpyrrolidone als Schutzkolloid neben den Oxyfluoronfarbstoffen verwendet. Überraschenderweise erhält man bei der Anwendung dieser Verbindungen, welche an sich schon gewisse therapeutisch wertvolle Eigenschaften besitzen, genau so hochdisperse Sole (Teilchengröße unter Io m,u) wie mit Gummiarabikum oder den anderen gebräuchlichen Schutzkolloiden. It was now in the process of further perfecting the den The subject of the invention found precious metal sols that the gum arabic inherent disadvantages can be avoided if one instead of its polyvinylpyrrolidone used as a protective colloid in addition to the oxyfluoron dyes. Surprisingly one obtains when using these compounds which in themselves are already certain therapeutic have valuable properties, as do highly disperse sols (particle size below Io m, u) as with gum arabic or the other common protective colloids.
Beispiel I I60 ccm Polyvinylpyrrolidonlösung werden mit I6 g Eosin, bläulich und 7 g calc. Soda versetzt, worauf 40 ccm Platinchlorwasserstofflösung (enthaltend 5 0/o Pt) hinzugegeben werden. Die Reduk- tion wird mit I g Hydrazinhydrat vorgenommen, schließlich wird unter Einleiten von Wasserstoff aufgekocht und heiß filtriert. Während man unter sonst gleichen Bedingungen bei nur mit Gummiarabikum hergestellten Solen für die Filtration 12 Stunden und mehr braucht, ist das mit Polyvinylpyrrolidon hergestellte Sol schon in 30 bis 60 Minuten durchfiltriert. Die Stabilität ist bei beiden Solen die gleiche. Example I 160 ccm of polyvinylpyrrolidone solution are mixed with 16 g of eosin, bluish and 7 g calc. Soda is added, whereupon 40 cc of platinum chloride solution (containing 5 0 / o Pt) are added. The Reduk- tion will made with 1 g of hydrazine hydrate, and finally with the introduction of hydrogen boiled and filtered hot. While all other things being equal Sols made only with gum arabic for filtration 12 hours and more The sol made with polyvinylpyrrolidone takes 30 to 60 minutes filtered through. The stability is the same for both sols.
Beispiel 2 I,I g Palladium in Form einer 30/oigen PdCl.-Lösung werden mit I75 ccm einer 30/oigen Polyvinylpyrrolidonlösung vermischt. Dann werden IO g des Kaliumsalzes des Tetrabromfluoresceinäthylesters zugesetzt. Das Gemisch wird hierauf mit Wasserstoff reduziert, wobei diurch Zugabe von calc. Example 2 I, I g of palladium in the form of a 30% PdCl. Solution mixed with 175 cc of a 30% polyvinylpyrrolidone solution. Then IO g of the potassium salt of the tetrabromofluorescein ethyl ester added. The mixture will then reduced with hydrogen, with the addition of calc.
Soda für ein p, von 7 bis 7,6 gesorgt wird.Soda is catered for ap, from 7 to 7.6.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER2190D DE910954C (en) | 1944-11-12 | 1944-11-12 | Process for the production of stabilized aqueous brine from precious metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER2190D DE910954C (en) | 1944-11-12 | 1944-11-12 | Process for the production of stabilized aqueous brine from precious metals |
Publications (1)
Publication Number | Publication Date |
---|---|
DE910954C true DE910954C (en) | 1954-05-10 |
Family
ID=7395848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER2190D Expired DE910954C (en) | 1944-11-12 | 1944-11-12 | Process for the production of stabilized aqueous brine from precious metals |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE910954C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1154442B (en) * | 1960-03-31 | 1963-09-19 | California Research Corp | Process for the production of stable metal dispersions |
-
1944
- 1944-11-12 DE DER2190D patent/DE910954C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1154442B (en) * | 1960-03-31 | 1963-09-19 | California Research Corp | Process for the production of stable metal dispersions |
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