Fungicidal compositions

Inactive Publication Date: 2016-06-30
DOW AGROSCIENCES LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]In certain embodiments, the described fungicidal composition forms a stable, homogenous emulsifiable concentrate that readily emulsifies and forms a stable emulsion without crystallizat

Problems solved by technology

The preparation of these liquid, pre-mix concentrates can be challenging owing to chemical and/or physical instability issues.
The disadvantages of some emulsifiable concentrates inclu

Method used

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  • Fungicidal compositions
  • Fungicidal compositions
  • Fungicidal compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparation of Representative Samples of the Described Fungicidal Composition

[0136]

TABLE 1Fungicidal Compositions Described HereinIngredientRoleAmount (g / L)1st fungicide cmpd.active ingredient1-2502nd fungicide cmpd.active ingredient0-200surfactantemulsifier1-100surfactantemulsifier1-100surfactantemulsifier1-100organosiliconeadjuvant10-100 ketonesolvent0-500acetate estersolvent10-750 N,N-dialkylcarboxamide1solvent10-500 polydimethylsiloxaneantifoam0.01-1   1Also known as an N,N-dimethyl fatty acid amide.

Sample 1:

[0137]An emulsion concentrate comprising Compound A as the active ingredient was prepared using the ingredients in Table 2 and as described in the steps below (indicated values are g per 100 mL formulation):

TABLE 2Sample 1 Fungicidal Composition1st fungicide cmpdCompound A, 85% tech.5.88surfactantNansa EVM 70 / 2E6.00surfactantToximul 83204.50surfactantSynperonic 13 / 104.50organosiliconeBreakthru S2335.00ketonecyclohexanone9.89acetate esterbenzyl acetate46.81N,N-dialkylcarboxam...

example 2

Solubility of Fungicidal Active Ingredients in Organic Solvents

[0145]a) Relative solubility of Compound A and prothioconazole in organic solvents with low solubility in water.

[0146]To prepare an effective EC composition comprising Compound A and prothioconazole the following solvent attributes must be achieved:[0147]Compound A solubility needs to be above 10 wt %[0148]prothioconazole solubility needs to be above 20 wt %[0149]water solubility of solvent candidates should be below about 5 g / L or 0.5% so that good emulsion stability will be achieved when the EC is added to water.

[0150]Test Method:

[0151]The approximate solubility of Compound A was determined by mixing a known mass of the active ingredient with an increasing mass of each solvent at ambient temperature. For example, 0.2 g of Compound A was mixed with 1.38 g of cyclohexanone giving a clear solution comprising 12.6% w / w Compound A. Cyclohexanone was therefore classified as a very good solvent for Compound A as it offered “H...

example 3

Storage Stability of Representative Samples of the Described Fungicidal Composition

[0157]a) Accelerated storage stability study of Compound A in liquid compositions comprising benzyl acetate, AMD 810 and a third solvent.

[0158]The stability of Compound A in a variety of liquid compositions stored at 54° C. for 2 weeks is shown in Table 12. The test compositions were prepared in a manner similar to that described in Example 1 using one or more of Compound A, prothioconazole, pyraclostrobin, benzyl acetate, and AMD 810, and a third solvent chosen from cyclohexanone, acetophenone, 2-heptanone, 2-heptanol, oleyl alcohol or 2-ethylhexanol.

TABLE 12Stability of Compound A in Liquid CompositionsComprising Benzyl Acetate, AMD 810 and a Third Solventafter Storage for 2 Weeks at 54° C.CompoundComposition (wt %)A afterCompoundProthio- Pyraclo- BenzylAMDThirdStorage (%Aconazole strobinacetate810SolventThird Solventretention)14.9——94.1——none85 3.4———96.0—none49 12.0————85.7cyclohexanone96 4.97.4—4...

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Abstract

Described herein are fungicidal compositions in the form of an emulsifiable concentrates that include a first fungicidal compound, optionally, at least one additional fungicidal compound, two or more surfactants and a water immiscible organic solvent comprised of a mixture of organic compounds including at least one acetate ester, at least one N,N-dialkylcarboxamide and at least one of a ketone and an alcohol, and methods of use of such compositions to control important fungal diseases of plants.

Description

PRIORITY CLAIM[0001]This application claims the benefit of U.S. Provisional Application No. 62 / 098,199, filed Dec. 30, 2014, U.S. Provisional Application No. 62 / 098,202, filed Dec. 30, 2014, and U.S. Provisional Application No. 62 / 098,224, filed Dec. 30, 2014, the complete disclosures of all of which are hereby expressly incorporated by reference.FIELD OF THE INVENTION[0002]Some aspects of the invention relate to methods of use of fungicides which are suitable for use in agriculture.BACKGROUND AND SUMMARY[0003]Liquid pre-mix concentrates comprising two or more active ingredients are useful in a wide variety of agricultural applications. For example, two or more pesticidal active ingredients may be combined in order to control a wider spectrum of pests, or to utilize multiple modes of action, compared to the individual active ingredients alone.[0004]Water insoluble pesticide active ingredients may be formulated in water as aqueous suspension concentrates (SC) or by dissolving the wat...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N43/56A01N43/653
CPCA01N43/40A01N43/56A01N43/653A01N25/04A01N25/30A01N37/18A01N47/24A01N2300/00A01N25/02
Inventor HOPKINS, DEREK J.CATHIE, CHERYL ANNMATHIESON, TODDFOSTER, NEIL
Owner DOW AGROSCIENCES LLC
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