DE492817C - Process for the preparation of a pest repellent - Google Patents
Process for the preparation of a pest repellentInfo
- Publication number
- DE492817C DE492817C DEP56047D DEP0056047D DE492817C DE 492817 C DE492817 C DE 492817C DE P56047 D DEP56047 D DE P56047D DE P0056047 D DEP0056047 D DE P0056047D DE 492817 C DE492817 C DE 492817C
- Authority
- DE
- Germany
- Prior art keywords
- copper
- preparation
- lactic acid
- pest repellent
- 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.)
- Expired
Links
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
Verfahren zur Herstellung eines Schädlingsbekämpfungsmittels Bekannt ist die antibakterielle Wirkung des Kupfers. Kupferverbindungen, z. B. Kupfersulfat, haben sich infolge ihrer sauren Eigenschaften als nicht geeignet erwiesen. Dasselbe gilt für Kupferlactat. Dagegen üben alkalische Kupferlösungen hohe antibakterielle und sonstige Wirkungen aus. Ammoniakhaltige weinsaure Lösungen sind bei dem hohen Preis für Weinsäure zu teuer. Andere sind ungeeignet auch wegen ihrer Zersetzlichkeit und Nebenwirkungen. Es ist nun nach dem vorliegenden Verfahren gefunden worden, daß man ein haltbares, gegen tierische und pflanzliche Schädlinge, z. B. gegen Peronospora, wirkendes Mittel herstellen kann, dem keine Nebenwirkungen anhaften, wenn man folgendermaßen verfährt Kupfer oder kupferhaltige Materialien werden mit Hilfe von Milchsäure oder milchsauren Verbindungen in Lösung gebracht; z. B. werden 3 Teile milchsaurer Kalk in Wasser gelöst und mit 2,5 Teilen Kupfersulfat - ebenfalls in Wasser gelöst - bei niedriger Temperatur zusammengebracht. Die Mengenverhältnisse können in weiten Grenzen geändert werden. Fügt man zu einer solchen Füllung, die naturgemäß entstehen muß, z. B. Natronlauge oder andere alkalisch reagierende Stoffe, so findet überraschenderweise eine dauernde Wiederauflösung statt. Gleichzeitig vollzieht sich eine deutliche Farbenänderung. Diese alkalisch reagierende Lösung - auch in partieller Form - als solche oder mit den üblichen Verdickungsmitteln evtl. bis zur Staubform versehen, kann als Schädlingsbekämpfungsmittel, z. B. gegen Peronospora, als Saatbeize Verwendung finden.Process for the preparation of a pest control agent is known is the antibacterial effect of copper. Copper compounds, e.g. B. copper sulfate, have proven unsuitable due to their acidic properties. The same thing applies to copper lactate. In contrast, alkaline copper solutions are highly antibacterial and other effects. Tartaric solutions containing ammonia are at the high level Price too expensive for tartaric acid. Others are unsuitable also because of their degradability and side effects. It has now been found, according to the present procedure, that you have a durable, against animal and vegetable pests, z. B. against downy mildew, can produce an effective agent to which no side effects are attached, if one follows copper or copper-containing materials are handled with the help of lactic acid or brought lactic acid compounds into solution; z. B. 3 parts of lactic acid lime dissolved in water and mixed with 2.5 parts of copper sulfate - also dissolved in water - brought together at low temperature. The proportions can be wide Boundaries are changed. If one adds to such a filling that is created naturally must, e.g. B. caustic soda or other alkaline reacting substances surprisingly takes place a permanent re-dissolution takes place. At the same time, a clear one takes place Color change. This alkaline reacting solution - also in partial form - as those or with the usual thickeners, possibly up to the form of dust, can be used as a pesticide, e.g. B. against downy mildew, use as a seed dressing Find.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP56047D DE492817C (en) | 1927-09-14 | 1927-09-14 | Process for the preparation of a pest repellent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP56047D DE492817C (en) | 1927-09-14 | 1927-09-14 | Process for the preparation of a pest repellent |
Publications (1)
Publication Number | Publication Date |
---|---|
DE492817C true DE492817C (en) | 1931-09-17 |
Family
ID=7388171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP56047D Expired DE492817C (en) | 1927-09-14 | 1927-09-14 | Process for the preparation of a pest repellent |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE492817C (en) |
-
1927
- 1927-09-14 DE DEP56047D patent/DE492817C/en not_active Expired
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