US2194446A - Pest destroying emulsion - Google Patents

Pest destroying emulsion Download PDF

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Publication number
US2194446A
US2194446A US87465A US8746536A US2194446A US 2194446 A US2194446 A US 2194446A US 87465 A US87465 A US 87465A US 8746536 A US8746536 A US 8746536A US 2194446 A US2194446 A US 2194446A
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United States
Prior art keywords
rotenone
pest
solutions
emulsion
destroying emulsion
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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 - Lifetime
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US87465A
Inventor
Neu Richard
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Deutsche Hydrierwerke AG
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Deutsche Hydrierwerke AG
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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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • A01N65/20—Fabaceae or Leguminosae [Pea or Legume family], e.g. pea, lentil, soybean, clover, acacia, honey locust, derris or millettia
    • 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
    • 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
    • A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
    • 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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • A01N65/12—Asteraceae or Compositae [Aster or Sunflower family], e.g. daisy, pyrethrum, artichoke, lettuce, sunflower, wormwood or tarragon

Definitions

  • the rotenone has the property of dissolving in aliphatic hydrocarbons but only to a little degree, so that solutions made in this way are unfit'for the combating of vermin.
  • aromatic hydrocarbons it is true, the rotenone is easily soluble, but the thus obtained solutions are of'a most toxic effect to the organism of mammals.
  • dekalinone and the like to which partly or entirely hydrogenized cyclic hydrocarbons may be added.
  • the hydrogenation-products of the naphthalene e. g. the tetrahydroand the deka- S hydro-naphthalene, have proved particularly apt for the purpose.
  • the solutions of the rotenone, of its derivatives, of derris root-extracts, of the pyrethrins or of the pyrethrum-extracts in cyclic ketones and hydrogenized aromatic hydrocarbons are likewise fit for the use in an aqueous solution, if a neutral emulsifying agent of high efliciency is admixed.
  • Emulsifying agents of a particular fitness are the sulfonating-products of the fatty alcohols and especially those with 8 to 10 C-atoms, highly sulfonated Turkey-red oils and the like.
  • the hydrogenized aromatic hydrocarbons distinguish themselvesalso compared with the usual solvents such as chloroform and benzeneby a lesser poisonous action and they'dont possess any of the properties damaging the plants.
  • Example 1 In dissolving 0.5 g. of a 100%-rotenone (163 F) in 10 cm. of cyclohexanone (bearing 85% of ketone) and in adding 90 cm. of kerosene or a mixture of 10 cm. of tetra-hydroand 10 of deka-hydro-naphthalene, the rotenone will crystllize out after some time; but by the addition of a solution of 0.5 g. of rotenone in 10 cm. of
  • Example 2 Indissolving 0.5 g. of rotenone in 10 cm. of cyclohexanone and 10 cm. of delta-hydronaphthalene and in adding 30 g. of an aqueous 30%-solution of the sodium salts of the sulfuric acid esters of fatty alcohols with 8-10 C-atoms, one obtains a lasting, clear and transparent solution which, when diluted with water, is particularly flt for the combating of gadfly-grubs with pasture-animals.
  • the dilution made with water and wherein the rotenone is fine-suspended has a milky-turbid aspect and it scarcely precipitates.
  • This diluted solution is also an excellent means to combate the horticulture-damaging pests and doesnt do any harm to the plants.
  • Di-hydro-rotenone, derris-extracts, pyrethrins and pyrethrum-extracts allow, in observing the above prescriptions, of being dissolved in quite the same way.

Description

Patented Mar. 19, 1940 PEST DESTROYING EMULSION Richard Neu, Dessau-Rosslau, Anhalt, Germany,
assignor to Deutsche Hydrierwerke Aktiengesellschaft, Berlin-Charlottenburg, Germany,
a corporation of Germany No Drawing. Application June 26, 1936, Serial No. 87,465. In Germany June 26, 1935 1 Claim.
As it is known, the rotenone has the property of dissolving in aliphatic hydrocarbons but only to a little degree, so that solutions made in this way are unfit'for the combating of vermin. In aromatic hydrocarbons, it is true, the rotenone is easily soluble, but the thus obtained solutions are of'a most toxic effect to the organism of mammals. I
We also know the method of dissolving the emcient ingredients of the derris-root and of thepyrethrum in acetone. Those solutions, however, cannot be worked with aliphatic hydrocarbons into the usual spraying means, as they dont last for a long time and the efficient ingredients, e. g. those of the derris-root begin soon to precipitate. On the other hand, the solubility of the rotenone in aliphatic ketones is notsufflcient to allow the manufacture of lasting preparations good for the purpose. 7
Now it has been vfou'nd that it is quite easy to produce clear and lasting solutions of the rotenone, its derivatives and particularly of di-hydrorotenone, pyrethrineapyrethrum and derris-rootextracts in petroleum-distillates (kerosene), if for the dissolving of the rotenone, etc., one makes use of cyclic ketones such as cyclo-pentanone, cyclo-hexanone or methyl-cyclo-hexanone,
dekalinone and the like, to which partly or entirely hydrogenized cyclic hydrocarbons may be added. The hydrogenation-products of the naphthalene, e. g. the tetrahydroand the deka- S hydro-naphthalene, have proved particularly apt for the purpose.
Furthermore it has been found that the solutions of the rotenone, of its derivatives, of derris root-extracts, of the pyrethrins or of the pyrethrum-extracts in cyclic ketones and hydrogenized aromatic hydrocarbons, are likewise fit for the use in an aqueous solution, if a neutral emulsifying agent of high efliciency is admixed. Emulsifying agents of a particular fitness are the sulfonating-products of the fatty alcohols and especially those with 8 to 10 C-atoms, highly sulfonated Turkey-red oils and the like. These solutions, when diluted with water, form good stable emulsions from which the efllcient ingredients, which are 'colloidally distributed, precipitate very slowly in comparison with those containing'merely a water-soluble solvent and a wetting-out agent. I
The hydrogenized aromatic hydrocarbons distinguish themselvesalso compared with the usual solvents such as chloroform and benzeneby a lesser poisonous action and they'dont possess any of the properties damaging the plants.
Example 1 In dissolving 0.5 g. of a 100%-rotenone (163 F) in 10 cm. of cyclohexanone (bearing 85% of ketone) and in adding 90 cm. of kerosene or a mixture of 10 cm. of tetra-hydroand 10 of deka-hydro-naphthalene, the rotenone will crystllize out after some time; but by the addition of a solution of 0.5 g. of rotenone in 10 cm. of
cyclohexanone (85%), 10 cm. of tetrahydro- 'naphthalene, 20 cm. of dekahydronaphthalene and -80 cm. of kerosene, one obtains a liquid which also after a long standing remains clear and which is very suitable for the combating of flies and gnats.
' Example 2 'Indissolving 0.5 g. of rotenone in 10 cm. of cyclohexanone and 10 cm. of delta-hydronaphthalene and in adding 30 g. of an aqueous 30%-solution of the sodium salts of the sulfuric acid esters of fatty alcohols with 8-10 C-atoms, one obtains a lasting, clear and transparent solution which, when diluted with water, is particularly flt for the combating of gadfly-grubs with pasture-animals. The dilution made with water and wherein the rotenone is fine-suspended, has a milky-turbid aspect and it scarcely precipitates. This diluted solution is also an excellent means to combate the horticulture-damaging pests and doesnt do any harm to the plants.
Di-hydro-rotenone, derris-extracts, pyrethrins and pyrethrum-extracts allow, in observing the above prescriptions, of being dissolved in quite the same way. a
RICHARD NEU.
US87465A 1935-06-26 1936-06-26 Pest destroying emulsion Expired - Lifetime US2194446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2194446X 1935-06-26

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US2194446A true US2194446A (en) 1940-03-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021242A1 (en) * 1991-06-05 1992-12-10 Jean Gueyne Insecticide composition
US5609878A (en) * 1991-06-05 1997-03-11 Gueyne; Jean Insecticide composition of rotenone microspheres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021242A1 (en) * 1991-06-05 1992-12-10 Jean Gueyne Insecticide composition
FR2677223A1 (en) * 1991-06-05 1992-12-11 Gueyne Jean INSECTICIDE COMPOSITION BASED ON ROTENONE, PARTICULARLY FOR THE TREATMENT OF HUMAN AND ANIMAL PESTS.
US5609878A (en) * 1991-06-05 1997-03-11 Gueyne; Jean Insecticide composition of rotenone microspheres

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