DE575229C - Process for the preparation of a field weed control agent - Google Patents

Process for the preparation of a field weed control agent

Info

Publication number
DE575229C
DE575229C DEC44939D DEC0044939D DE575229C DE 575229 C DE575229 C DE 575229C DE C44939 D DEC44939 D DE C44939D DE C0044939 D DEC0044939 D DE C0044939D DE 575229 C DE575229 C DE 575229C
Authority
DE
Germany
Prior art keywords
control agent
weed control
preparation
copper
field weed
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
Application number
DEC44939D
Other languages
German (de)
Inventor
Dr Fritz Wolff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEYER LUDWIG CHEM FAB
Original Assignee
MEYER LUDWIG CHEM FAB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MEYER LUDWIG CHEM FAB filed Critical MEYER LUDWIG CHEM FAB
Priority to DEC44939D priority Critical patent/DE575229C/en
Application granted granted Critical
Publication of DE575229C publication Critical patent/DE575229C/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/20—Copper

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Verfahren zur Herstellung eines Ackerunkrautbekämpfungsmittels Die Anwendung von Kupferchlorid in bestimmten, denen des Kupfernitrats (Patent 441 213) entsprechenden Äquivalenzkonzentrationen ist bekannt. Auch S t e n d e r hatte schon Kupferchlorid in io%iger Lösung, allerdings mit negativem Erfolg, verwendet.Process for the preparation of an arable weed killer Use of copper chloride in certain, those of copper nitrate (patent 441 213) corresponding equivalent concentrations are known. S t e n d e r already had Copper chloride used in 10% solution, albeit with negative results.

Seine Anwendung wird beeinträchtigt durch den hygroskopischen Charakter des Salzes, der Transport und Lagerung unter den gegebenen Bedingungen unmöglich macht.Its use is impaired by its hygroscopic character of the salt, transport and storage are impossible under the given conditions power.

Die gleichen Eigenschaften haben Salzgemische aus Kupfersulfat und Chlornatrium. Die Umsetzung zu Kupferchlorid und Natriumsulfat beginnt nach kurzer Zeit, dasfrei werdende Kristallwasser wird von dem Natriumsulfat erst nach längerer Zeit gebunden, so daß auch dieser Weg zu einer befriedigenden Anwendung des Kupferchlorids nicht gangbar ist.Salt mixtures of copper sulfate and salt have the same properties Sodium chloride. The conversion to copper chloride and sodium sulfate begins after a short time Time, the water of crystallization that is released takes a long time to remove the sodium sulphate Time bound, so that also this way to a satisfactory application of the copper chloride is not feasible.

Es wurde nun gefunden, daß ein haltbares, nicht zerfiießliches, leicht pulverisierbares, calciniertes Kupferchlorid enthaltendes- Salzgemisch, das sich sofort klar in Wasser löst, durch folgendes Verfahren herstellbar ist.It has now been found that a durable, non-dissolving, easily powderable, calcined copper chloride containing salt mixture, which immediately dissolves clear in water, can be prepared by the following process.

Äquivalente oder gegebenenfalls beliebige Salzgemische aus Kupfersulfat und Chlornatrium werden bei erhöhter Temperatur so lange miteinander vermahlen, bis das entstandene Produkt .eine gleichmäßige grüngelbe bis gelbe Farbe angenommen hat. Die beiden Vorgänge können auch getrennt ausgeführt werden. Beispiel i 67,5 kg Kupfersulfat und 32,5 kg Chlornatrium werden bei ioo° C 3 Stunden meiner heizbaren Kugelmühle miteinander vermahlen. Kupfergehalt 2o bis 21 %. Beispiel 2 Ein gleichmäßiges Gemisch aus 75 kg Kupfervitriol und a.5 kg Chlornatrium wird bei etwa 5o° im Vakuum getrocknet, bis ein leicht zerfallendes grüngelbes Produkt entstanden ist, das dann nachträglich noch in einer Kugelmühle gemahlen wird. Bei Herstellung der-Mittel und der- Spritzbrühen können 'leicht geringe Trübungen. durch kalkhaltiges Wasser auftreten; diese Trübungen sind für die Wirkung belanglos, da der Gehalt an wirksamem wasserlöslichem Kupfer dadurch nicht merklich beeinträchtigt wird.Equivalents or, if appropriate, any salt mixtures of copper sulfate and sodium chloride are ground together at an elevated temperature for so long until the resulting product has assumed a uniform green-yellow to yellow color Has. The two processes can also be carried out separately. Example i 67.5 kg of copper sulphate and 32.5 kg of sodium chloride are heated at 100 ° C for 3 hours Grind the ball mill together. Copper content 2o to 21%. Example 2 A uniform Mixture of 75 kg of copper vitriol and a.5 kg of sodium chloride is at about 5o ° in a vacuum dried until a slightly disintegrating green-yellow product is formed, which then is subsequently ground in a ball mill. When making the means and the spray liquors can be slightly cloudy. through calcareous water appear; these opacities are insignificant for the effect, since the content of effective water-soluble copper is not noticeably affected.

Claims (1)

PATr"N-TANSPRUCH: ' - Verfahren zur Herstellung eines Ackerunkrautbekämpfungsmittels, dadurch gekennzeichnet, daß Salzgemische aus Kupfersulfat und Kochsalz bei erhöhter Temperatur so lange miteinander in Reaktion gebracht werden, bis ein leicht zerfallendes, grüngelbes bis gelbes, calciniertes Kupferchlorid enthaltendes Produkt entstanden ist.PATr "N-TANSPRUCH: '- Process for the production of an arable weed control agent, characterized in that salt mixtures of copper sulfate and table salt at increased Temperature are brought into reaction with each other until an easily disintegrating, Green-yellow to yellow, calcined copper chloride-containing product was formed is.
DEC44939D 1931-06-11 1931-06-11 Process for the preparation of a field weed control agent Expired DE575229C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC44939D DE575229C (en) 1931-06-11 1931-06-11 Process for the preparation of a field weed control agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC44939D DE575229C (en) 1931-06-11 1931-06-11 Process for the preparation of a field weed control agent

Publications (1)

Publication Number Publication Date
DE575229C true DE575229C (en) 1933-04-26

Family

ID=7025990

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC44939D Expired DE575229C (en) 1931-06-11 1931-06-11 Process for the preparation of a field weed control agent

Country Status (1)

Country Link
DE (1) DE575229C (en)

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