WO2011157101A1 - Pesticidal composition - Google Patents

Pesticidal composition Download PDF

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Publication number
WO2011157101A1
WO2011157101A1 PCT/CN2011/074622 CN2011074622W WO2011157101A1 WO 2011157101 A1 WO2011157101 A1 WO 2011157101A1 CN 2011074622 W CN2011074622 W CN 2011074622W WO 2011157101 A1 WO2011157101 A1 WO 2011157101A1
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WO
WIPO (PCT)
Prior art keywords
ether
glycol
mono
formulation
alkyl ether
Prior art date
Application number
PCT/CN2011/074622
Other languages
French (fr)
Inventor
James Timothy Bristow
Original Assignee
Rotam Agrochem International Co., Ltd
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=45347659&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2011157101(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rotam Agrochem International Co., Ltd filed Critical Rotam Agrochem International Co., Ltd
Priority to CR20180464A priority Critical patent/CR20180464A/en
Priority to CN201180029519.7A priority patent/CN103037689B/en
Priority to AP2013006676A priority patent/AP3460A/en
Priority to MYPI2012005441A priority patent/MY165577A/en
Priority to GB1300623.4A priority patent/GB2495659B/en
Priority to UAA201300490A priority patent/UA106668C2/en
Publication of WO2011157101A1 publication Critical patent/WO2011157101A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/32Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/34Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the groups, e.g. biuret; Thio analogues thereof; Urea-aldehyde condensation products
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/36Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof

Definitions

  • the present invention relates to an agrochemical composition.
  • the present invention is especially concerned with such a composition comprising one or more benzoylphenyl urea compounds active as an insecticide.
  • the present invention further relates to a method of preparing the aforementioned composition and their use in crop protection.
  • the present invention is particularly concerned with the reduction of eye irritation when using a liquid concentrate based on benzoylphenyl urea insecticide compounds and to compositions exhibiting reduced eye irritation.
  • BPU compounds are known in the art for controlling insects.
  • examples of such formulations include those with active ingredients selected from among novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron.
  • Benzoylphenyl urea compounds are generally commercialized in emulsifiable concentrate (EC) formulations.
  • EC emulsifiable concentrate
  • organic solvents such as aromatic hydrocarbons, chlorinated hydrocarbons, etc.
  • organic solvents are known for their toxicological and ecotoxicological properties, creating toxicological and ecotoxicological problems.
  • Aliphatic hydrocarbons suffer from their generally low solvent power with respect to solid pesticides, leading to difficulties with producing effective and stable formulations.
  • the other solvents listed above, while suitable to solubilize the pesticide, are themselves soluble in water.
  • Such a solubility in water is a problem when the EC formulation is diluted to prepare a spray for final application and use.
  • the solubility in water causes the phenomenon of crystallization of the pesticidally acive ingredient.
  • Such crystallization makes the formulation unsuitable for spraying, in particular a a result of blockages forming in the spray equipment, especially in the fine passageways and nozzles of the equipment.
  • WO02/45507 describes a microemulsifiable concentrate formulation of a hydrophobic pesticide compound, wherein the active ingredient and at least one surfactant are dissolved in a solvent system comprising a hydrophobic water-insoluble alkylalkanolate as a first solvent and a polyhydric alcohol or a condensate thereof as a second solvent.
  • the formulations are reported to exhibit reduced eye irritation.
  • PCT/EP2005/07256 discloses liquid concentrate formulations of water-insoluble pesticide compounds having both improved storage and dilution stability.
  • the formulations comprise at least one pesticide compound, at least one organic solvent having a water solubility of at least 10g/L and at least one non-ionic block copolymer comprising at least one polyethylene oxide moiety and at least one hydrophobic polyether moiety.
  • the problem of eye irritation is not discussed in this document and does not appear to be addressed therein.
  • Benzoylphenyl urea (BPU) compounds for example selected from among novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron, are strong irritants to eyes.
  • the commercial benzoylphenyl urea emulsion concentrate formulations exhibit strong irritancy to the eyes, which is caused not only by the solvents and surfactants present in the formulation, but also by the active ingredients present. So even if the solvents and surfactants used are not irritants to the eyes, the formulation nevertheless always exhibits strong irritancy, due to the properties of the active ingredient present.
  • the present invention relates to a use of certain C 2 -C 4 dialkylene glycol di-/mono- Ci-C 4 alkyl ethers for reducing the irritancy to eyes of pesticidal formulations, especially reducing the eye irritancy caused by benzoylphenyl urea compounds as active ingredient in agrochemical formulations.
  • the present invention provides an agrochemical composition
  • a benzoylphenyl urea as active ingredient and a C 2 -C 4 dialkylene glycol di-/mono- C-
  • the present invention provides an agrochemical composition
  • the composition of the present invention further comprises at least one benzoylphenyl urea active ingredient.
  • Suitable benzoylphenyl urea compounds are well known in the art and are commercially available.
  • the composition comprises at least one member selected from the group consisting of novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron.
  • the composition may comprise further components, as known in the art.
  • the composition optionally comprises at least one member selected from the group consisting of a surface-active agent, an organic polar solvent and a low temperature stabilizer. Suitable surface-active agents, organic polar solvents and stabilizers are known in the art and are commercially available.
  • the present invention also provides, in a further aspect, a practical method for preparing an agriculturally acceptable, stable liquid concentrate formulation, the method comprising combining one or more benzoylphenyl urea active ingredients with a solvent is selected from one or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers.
  • the present invention provides the use of a C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether to reduce the eye irritancy of a benzoylphenyl urea, in particular when used as active ingredient in a pesticidal formulation.
  • the present invention provides the use of a composition as hereinbefore described in the control of pests, in particular insects.
  • the present invention also provides a method of controlling pests, in particular insects, at a locus, the method comprising applying to the locus a composition as hereinbefore described.
  • Benzoylphenyl ureas are water-insoluble compounds, and such compounds are strong irritants to eyes. These compounds are commercially formulated into liquid concentrates. Many organic solvents used in Emulsion Concentrate are irritants to eyes. A major problem associated with liquid concentrate formulations is that they may cause irritation to eyes.
  • C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers are not only non-irritant to eyes, but also can reduce the irritancy of certain active ingredients, in particular of benzoylphenyl urea to eyes in the final formulation.
  • -C 4 alkyl ether is present in the composition in an amount sufficient to reduce the eye irritation of benzoylphenyl urea active ingredient.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether is effective in reducing the eye irritation of the benzoylphenyl urea active ingredient compounds.
  • the inclusion of one or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers in liquid concentrates reduces the eye irritancy of the formulation.
  • the use of C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers in liquid concentrate pesticidal formulations is environmental friendly.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers are suitable for preparing water-dilutable, liquid concentrate formulations of sparingly water-soluble, or even water-insoluble, organic pesticide compounds such as benzoylphenyl ureas and, in particular, for reducing the risk of eye irritation caused by liquid insecticide formulations of such pesticide compounds.
  • the one or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers are present in an amount sufficient to reduce eye irritation of the benzoylphenyl urea compounds.
  • the amount of the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether required to be present will depend upon such factors as the concentration of the benzoylphenyl urea active ingredient and the particular benzoylphenyl urea or ureas present in the formulation.
  • the amount of the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether required to reduce or eliminate the irritancy to eyes of the formulation may be determined without undue experimentation by the skilled person, for example by trial and error.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether is preferably present in an amount such as to give a weight ratio of the benzoylphenyl urea active ingredient to the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether of at least 1 : 1 , more preferably at least 1 : 1 .5, still more preferably of at least 1 :2, especially of at least 1 :3.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether is preferably present in an amount such as to give a weight ratio of the benzoylphenyl urea active ingredient to the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether of from 1 : 1 to 1 :30, more preferably from 1 :2 to 1 :20, still more preferably from 1 :3 to 1 : 15.
  • the composition may comprise a single C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether or a combination of two or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether is at least one member selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol methyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, dibutylene glycol dimethyl ether, dibutylene glycol methyl ether, diethylene glycol diethyl ether, diethylene glycol ethyl ether, dipropylene glycol diethyl ether, dipropylene glycol ethyl ether, dibutylene glycol diethyl ether, dibutylene glycol ethyl ether, diethylene glycol dipropyl ether, diethylene glycol propyl ether, dipropylene glycol dipropyl ether, dipropylene glycol propyl ether, dibutylene glycol dipropyl ether, dibutylene glycol propylene glycol propyl ether, di
  • the composition of the present invention may be prepared in any suitable form.
  • the composition of the present invention is preferably a liquid concentrate, in particular an emulsion concentrate (EC) formulation.
  • EC emulsion concentrate
  • the relative amount of C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether present in the composition will depend upon the amount, number and nature of the other components of the composition.
  • the one or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers may be present in an amount of at least 10% by weight, preferably at least 20% by weight, more preferably at least 30% by weight, especially at least 35% by weight.
  • the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether may be present in the composition in an amount of from 2 to 90% by weight, preferably from 5 to 80% be weight, more preferably from 10 to 75% by weight.
  • An amount of C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether in the range of from 35 to 75% by weight has been found to be particularly suitable in many embodiments.
  • C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers are effective in reducing the irritancy to eyes of certain benzoylphenyl urea derivatives as active agrochemicals, in particular insecticides.
  • the composition may comprise one or a combination or two or more benzoylphenyl urea derivatives as active ingredient.
  • the formulation contains as active ingredient a benzoylphenyl urea selected from the group consisting of novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron, teflubenzuron and mixtures thereof.
  • a benzoylphenyl urea selected from the group consisting of novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron, teflubenzuron and mixtures thereof.
  • the benzoylphenyl urea active ingredient may be present in any suitable amount.
  • the benzoylphenyl urea is present in an amount of at least 2% by weight, more preferably at least 3% by weight, still more preferably at least 5% by weight.
  • the benzoylphenyl urea may be present in an amount in the range of from 2 to 50% by weight, preferably in the range of from 3 to 45% by weight, more preferably from 4 to 40%) by weight.
  • An amount of benzoyl urea in the range of from 5 to 35% by weight has been found to be particularly suitable in many embodiments.
  • compositions of the present invention may comprise other components as is known in the art.
  • Such further components include, for example one or more organic polar solvents and emulsifiers. Suitable components are known in the art and are commercially available.
  • Suitable organic polar solvents include one or more alcohols, such as benzyl alcohol, one or more alkyl pyrrolidones, such as N-methylprrolidone, N-octylpyrrolidone, or one or more lactones, such as ⁇ -butyrolactone.
  • suitable solvents will be known to the person skilled in the art.
  • the solvent may be present in any suitable amount. In particular, the solvent may be present in an amount in the range of from 10 to 90% by weight of the composition, preferably from 15 to 75% by weight, more preferably from 20 to 60% by weight.
  • the surfactant is one in which the lipophillic moiety is derived from a safe natural product.
  • Such surfactants are usually found in use in food and cosmetic industries.
  • the preferred surfactants for use in the compositions of the present invention are those with an H.L.B range of from 7 to 17.
  • suitable surface-active compounds are nonionic, cationic and/or anionic surfactants or a mixture of such surfactants, the surfactant or surfactant mixture having good emulsifying, dispersing and wetting capabilities.
  • Preferred nonionic surfactants are polyethoxylated castor oil, polyadducts of polypropylene and polyethylene oxide, tributylphenol polyethoxylate, polyethylene glycol and octylphenol polyethoxylate.
  • Fatty acid esters of polyoxyethylene sorbitan, e.g. polyoxyethylene sorbitan trioleate, are also suitable nonionic surfactants.
  • Preferred cationic surfactants for inclusion in the composition of the present invention include quaternary ammonium salts carrying, as N-substituent, at least one C 8 -C 2 2 alkyi radical and, as a further substituent, unsubstituted or halogenated lower alkyi, benzyl or hydroxyl- lower alkyi radicals.
  • the salts are preferably in the form of halide, methyl sulfate or ethyl sulfate.
  • Examples of such cationic surfactants are stearyltrimethylammonium chloride and benzyl bis(2-chloroethyl)ethylammonium bromide.
  • Suitable anionic surfactants for use in the compositions include water-soluble soaps as well as water-soluble synthetic surface-active compounds, alkylarylsulfonates.
  • alkylarylsulfonates are sodium, calcium or triethanolammonium salt of dodecylbenzenesulfonic acid, dibutylnaphthalenesulfonic acid or a condensate of naphthalenesulfonic acid and formaldehyde.
  • Corresponding phosphates for example salts of phosphoric acid ester of an adduct of p-nonylphenol with 4 to 14 mol of ethylene oxide, or phospholipids, are also suitable.
  • the surfactant or surfactant mixture may be present in the composition in any suitable amount.
  • the surfactant is present in an amount in the range of from 5 to 40% by weight, more preferably from 5 to 35% by weight, still more preferably from 10 to 30% by weight.
  • a surfactant concentration of from 20 to 30% by weight has been found to be particularly suitable in many embodiments.
  • compositions for inclusion in the composition are well known in the art and include, for example a stabilizer and a thickener. Such components are commercially available and their use will be recognized and understood by the person skilled in the art.
  • the present invention provides a liquid concentrate comprising a benzoylphenyl urea and a C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether.
  • the present invention provides the use of a C 2 -C 4 dialkylene glycol di-/mono- C-
  • compositions of the present invention may be prepared using techniques known in the art.
  • a particularly preferred method of preparing the composition is as follows:
  • Each component is added according to the weight fraction required in the final composition.
  • the solvent as required, and one or more C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers are charged to a suitable mixing vessel, for example a blending tank.
  • the resulting mixture is agitated.
  • the one or more benzoylphenyl urea derivatives are added to the mixture and the agitation continues until the benzoylphenyl urea derivatives are dissolved completely in the solvent.
  • An agitation time of about 30 minutes is typical.
  • further components such as an emulsifier, if present, are added and the mixture is further agitated to ensure homogeneity.
  • a further agitation time of about 1 hour is typical.
  • the present invention provides a method of reducing the eye irritation of insecticide liquid formulations comprising benzoylphenyl urea derivative, comprising adding a C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether, preferably those C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ethers hereinbefore recited, to the formulation in an amount sufficient to reduce the eye irritancy of the benzoylphenyl urea derivative.
  • test samples were categorized as follows:
  • compositions according to the present invention prepared and tested as described above, are described in the following examples, in conjunction with comparative test results given in respective tables.
  • Example 1 The liquid formulation described in Table 1 was prepared containing the indicated
  • Example 1 contained C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether in an amount of 65%wt.
  • Table 1 describes the liquid formulation of Example 1 and the comparison formulation, Comparison A.
  • the liquid formulation described in Table 2 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and novaluron as active ingredient, wherein the ratio of novaluron and C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without a C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 2 contained the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether in an amount of 60%wt. Table 2 describes the liquid formulation of Example 2 and the comparison formulation, Comparison B.
  • the liquid formulation described in Table 3 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and hexaflumuron as active ingredient, wherein the ratio of hexaflumuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :7.25. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- Ci-C 4 alkyl ether as eye irritancy reducer.
  • Example 3 contained C 2 -C 4 dialkylene glycol di-/mono- Ci-C 4 alkyl ether in an amount of 58%wt. Table 3 describes the liquid formulation of Example 3 and the comparison formulation, Comparison C.
  • the liquid formulation described in Table 4 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and triflumuron as active ingredient, wherein the ratio of triflumuron and C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 12. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether as eye irritation reducer.
  • Example 4 contained C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 4 describes the liquid formulation of Example 4 and the comparison formulation, Comparison D. Table 4
  • the liquid formulation described in Table 5 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and diflubenzuron as active ingredient, wherein the ratio of diflubenzuron and C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C -C 4 alkyl ether eye irritation reducer.
  • Example 5 contained the C 2 -C 4 dialkylene glycol di-/mono- ( C 4 alkyl ether in an amount of 60%wt. Table 5 describes the liquid formulation of Example 5 and the comparison formulation, Comparison E.
  • the liquid formulation described in Table 6 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether and chlorfluazuron as active ingredient, wherein the ratio of chlorfluazuron and C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :2. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- ( C 4 alkyl ether as eye irritation reducer.
  • Example 6 contained the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 40%wt. Table 6 describes the liquid formulation of Example 6 and the comparison formulation, Comparison F.
  • the liquid formulation described in Table 7 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether and flufenoxuron as the active ingreduent, wherein the ratio of flufenoxuron and the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 1 .6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- ( C 4 alkyl ether as eye irritation reducer.
  • Example 7 contained the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 40%wt. Table 7 describes the liquid formulation of Example 7 and the comparison formulation, Comparison G.
  • the liquid formulation described in Table 8 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether and noviflumuron as the active ingredient, wherein the ratio of noviflumuron and C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 12. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- ( C 4 alkyl ether as eye irritation reducer.
  • Example 8 contained the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 8 describes the liquid formulation of Example 8 and the comparison formulation, Comparison H.
  • the liquid formulation described in Table 9 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether and teflubenuron as the active ingredient, wherein the ratio of teflubenuron and the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 15. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- ( C 4 alkyl ether as eye irritation reducer.
  • Example 9 contained the C 2 -C 4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 9 describes the liquid formulation of Example 9 and the comparison formulation, Comparison I.
  • EXAMPLE 9 teflubenuron EC (with : COMPARISON I: teflubenuron EC Remark eye irritation reducer) (without irritation reducer)
  • teflubenuron tech 40kg ( as ; teflubenuron tech 40kg ( as Active pure) pure) ingredient
  • the liquid formulation described in Table 10 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of novaluron and lufenuron as active ingredients, wherein the ratio of novaluron plus lufenuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 10 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 60%wt.
  • Table 10 describes the liquid formulation of Example 10 and the comparison formulation, Comparison J.
  • the liquid formulation described in Table 11 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of triflumuron and hexaflumuron as active ingredients, wherein the ratio of triflumuron plus hexaflumuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :2.5. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 11 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 50%wt.
  • Table 11 describes the liquid formulation of Example 11 and the comparison formulation, Comparison K.
  • the liquid formulation described in Table 12 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of diflubenzuron and chlorfluazuron as active ingredients, wherein the ratio of diflubenzuron plus chlorfluazuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :2.75. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 12 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 55%wt.
  • Table 1 describes the liquid formulation of Example 12 and the comparison formulation, Comparison L.
  • the liquid formulation described in Table 13 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of flufenoxuron and noviflumuron as active ingredients, wherein the ratio of flufenoxuron plus noviflumuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 : 1 .4. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 13 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 35%wt.
  • Table 13 describes the liquid formulation of Example 1 and the comparison formulation, Comparison M.
  • the liquid formulation described in Table 1 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C 1 -C4 alkyl ether and a combination of noviflumuron and teflubenzuron as active ingredients, wherein the ratio of noviflumuron plus teflubenzuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 : 1 .3. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 14 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 40%wt.
  • Table 14 describes the liquid formulation of Example 14 and the comparison formulation, Comparison N.
  • the liquid formulation described in Table 15 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of novaluron and hexaflumuron as active ingredients, wherein the ratio of novaluron plus hexaflumuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 15 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 65%wt.
  • Table 15 describes the liquid formulation of Example 15 and the comparison formulation, Comparison O.
  • EXAMPLE 15 COMPARISON O: Remark novaluron+hexaflumuron EC (with eye I novaluron+hexaflumuron EC (without
  • Component Composition I Component Composition
  • TWEEN 80 100kg TWEEN 80 100kg Emulsifier
  • the liquid formulation described in Table 16 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and triflumuron as active ingredients, wherein the ratio of lufenuron plus triflumuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :2.9. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 16 contained the C 2 -C 4 dialkylene glycol di-/mono- Ci-C 4 alkyl ether in an amount of 52%wt. Table 16 describes the liquid formulation of Example 16 and the comparison formulation, Comparison P.
  • the liquid formulation described in Table 17 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and diflubenzuron as active ingredients, wherein the ratio of lufenuron plus diflubenzuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 : 1 .8. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 17 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 45%wt.
  • Table 17 describes the liquid formulation of Example 17 and the comparison formulation, Comparison Q.
  • the liquid formulation described in Table 18 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and chlorfluazuron as active ingredients, wherein the ratio of lufenuron plus chlorfluazuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 : 1 .4. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 18 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 65%wt.
  • Table 18 describes the liquid formulation of Example 18 and the comparison formulation, Comparison R.
  • the liquid formulation described in Table 19 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and flufenoxuron as active ingredients, wherein the ratio of lufenuron plus flufenoxuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :7. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 19 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 70%wt.
  • Table 19 describes the liquid formulation of Example 19 and the comparison formulation, Comparison S.
  • the liquid formulation described in Table 20 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and noviflumuron as active ingredients, wherein the ratio of lufenuron plus noviflumuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 : 1. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 20 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 35%wt.
  • Table 20 describes the liquid formulation of Example 20 and the comparison formulation, Comparison T.
  • the liquid formulation described in Table 21 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of lufenuron and teflubenzuron as active ingredients, wherein the ratio of lufenuron plus teflubenzuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 1 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 60%wt.
  • Table 21 describes the liquid formulation of Example 21 and the comparison formulation, Comparison U.
  • the liquid formulation described in Table 22 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of triflumuron and teflubenzuron as active ingredient, wherein the ratio of triflumuron plus teflubenzuron and the C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :2. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 22 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 40%wt.
  • Table 22 describes the liquid formulation of Example 22 and the comparison formulation, Comparison V.
  • the liquid formulation described in Table 23 was prepared containing the indicated C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether and a combination of triflumuron and noviflumuron as active ingredients, wherein the ratio of triflumuron plus noviflumuron and C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether was approximately 1 :3.3. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C 2 -C 4 dialkylene glycol di-/mono- C C 4 alkyl ether as eye irritation reducer.
  • Example 23 contained the C 2 -C 4 dialkylene glycol di-/mono-
  • Ci-C 4 alkyl ether in an amount of 50%wt.
  • Table 23 describes the liquid formulation of Example 23 and the comparison formulation, Comparison 23.
  • test samples are categorized as follows:

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Abstract

An agrochemical composition comprising a C2-C4 dialkylene glycol di-/mono- C1­-C4 alkyl ether is provided. A method of controlling pests at a locus using the composition and a use of the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in reducing the eye irritancy of benzoylphenyl urea active ingredients are also provided.

Description

PESTICIDAL COMPOSITION
FIELD OF THE INVENTION The present invention relates to an agrochemical composition. The present invention is especially concerned with such a composition comprising one or more benzoylphenyl urea compounds active as an insecticide. The present invention further relates to a method of preparing the aforementioned composition and their use in crop protection. The present invention is particularly concerned with the reduction of eye irritation when using a liquid concentrate based on benzoylphenyl urea insecticide compounds and to compositions exhibiting reduced eye irritation.
BACKGROUND OF THE INVENTION Insect growth regulator formulations comprising one or more benzoylphenyl urea
(BPU) compounds are known in the art for controlling insects. Examples of such formulations include those with active ingredients selected from among novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron.
Benzoylphenyl urea compounds are generally commercialized in emulsifiable concentrate (EC) formulations. However, such formulations require substantial quantities of organic solvents such as aromatic hydrocarbons, chlorinated hydrocarbons, etc. for effective formulation of the active ingredient. However, such organic solvents are known for their toxicological and ecotoxicological properties, creating toxicological and ecotoxicological problems.
As a result, the United States Enviromental Protection Agency has a review of ingredients in pesticidal formulations in addition to the active ingredients present. In Europe, the E.E.C. Council is at an advanced stage of introducing legislation for regulating the use of volatile organic compounds (VOC) and will shortly require an eco-labelling of formulations which contain such VOCs. Further, Canada and Germany already have a system of ecotoxic labelling.
To overcome the need to use such aromatic or chlorinated hydrocarbons, alternative solvents have been tried for use in commercial formulations, with a view to reducing the toxicological effects of the solvent components of the formulations. Examples of such alternative solvents are aliphatic hydrocarbons, alcohols, glycols, polyglycols, glycol ethers, and ketones, as well as polar solvents with a high solvent power, such as gamma-butyrolactone, N-methyl pyrrolidone and the like.
Aliphatic hydrocarbons suffer from their generally low solvent power with respect to solid pesticides, leading to difficulties with producing effective and stable formulations. The other solvents listed above, while suitable to solubilize the pesticide, are themselves soluble in water. Such a solubility in water is a problem when the EC formulation is diluted to prepare a spray for final application and use. The solubility in water causes the phenomenon of crystallization of the pesticidally acive ingredient. Such crystallization makes the formulation unsuitable for spraying, in particular a a result of blockages forming in the spray equipment, especially in the fine passageways and nozzles of the equipment.
Attempts to solve the aforementioned problems are known in the art.
For example, WO02/45507 describes a microemulsifiable concentrate formulation of a hydrophobic pesticide compound, wherein the active ingredient and at least one surfactant are dissolved in a solvent system comprising a hydrophobic water-insoluble alkylalkanolate as a first solvent and a polyhydric alcohol or a condensate thereof as a second solvent. The formulations are reported to exhibit reduced eye irritation.
PCT/EP2005/07256 discloses liquid concentrate formulations of water-insoluble pesticide compounds having both improved storage and dilution stability. The formulations comprise at least one pesticide compound, at least one organic solvent having a water solubility of at least 10g/L and at least one non-ionic block copolymer comprising at least one polyethylene oxide moiety and at least one hydrophobic polyether moiety. The problem of eye irritation is not discussed in this document and does not appear to be addressed therein.
The solvent mixtures and surfactants disclosed in the prior publications do not offer a solution for all needs. Benzoylphenyl urea (BPU) compounds, for example selected from among novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron, are strong irritants to eyes. The commercial benzoylphenyl urea emulsion concentrate formulations exhibit strong irritancy to the eyes, which is caused not only by the solvents and surfactants present in the formulation, but also by the active ingredients present. So even if the solvents and surfactants used are not irritants to the eyes, the formulation nevertheless always exhibits strong irritancy, due to the properties of the active ingredient present.
There is an ongoing need to find safe, preferably substantially inert, components for use in liquid concentrate formulations, which are not only themselves non-irritant to eyes, but preferably also can act to reduce the irritancy to eyes of the active ingredients present, in particular benzoylphenyl urea (BPU) compounds.
It has now been surprisingly found that certain C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are not only non-irritants to the eyes, but also it can reduce the irritation of the eyes arising from benzoylphenyl urea compounds in the final formulation.
SUMMARY OF THE INVENTION
The present invention relates to a use of certain C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ethers for reducing the irritancy to eyes of pesticidal formulations, especially reducing the eye irritancy caused by benzoylphenyl urea compounds as active ingredient in agrochemical formulations.
Accordingly, in a first aspect, the present invention provides an agrochemical composition comprising a benzoylphenyl urea as active ingredient and a C2-C4 dialkylene glycol di-/mono- C-|-C4 alkyl ether.
It has been found that the presence of one or more C2-C4 dialkylene glycol di-/mono- C-|-C4 alkyl ethers in a formulation comprising one or more benzoylphenyl ureas as active ingredient significantly reduces the toxicity of the formulation, in particular reducing the irritancy of the formulation to the eyes. It is believed that the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether reduces or substantially negates the irritancy of the benzoylphenyl urea to the eyes.
More preferably, in the first aspect, the present invention provides an agrochemical composition comprising a C2-C4 dialkylene glycol di-/mono- C-|-C4 alkyl ether selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol methyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, dibutylene glycol dimethyl ether, dibutylene glycol methyl ether, diethylene glycol diethyl ether, diethylene glycol ethyl ether, dipropylene glycol diethyl ether, dipropylene glycol ethyl ether, dibutylene glycol diethyl ether, dibutylene glycol ethyl ether, diethylene glycol dipropyl ether, diethylene glycol propyl ether, dipropylene glycol dipropyl ether, dipropylene glycol propyl ether, dibutylene glycol dipropyl ether, dibutylene glycol propyl ether, diethylene glycol dibutyl ether, diethylene glycol butyl ether, dipropylene glycol dibutyl ether, dipropylene glycol butyl ether, dibutylene glycol dibutyl ether, dibutylene glycol butyl ether and mixtures thereof.
As noted above, the composition of the present invention further comprises at least one benzoylphenyl urea active ingredient. Suitable benzoylphenyl urea compounds are well known in the art and are commercially available. Preferably, the composition comprises at least one member selected from the group consisting of novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron. The composition may comprise further components, as known in the art. Preferably, the composition optionally comprises at least one member selected from the group consisting of a surface-active agent, an organic polar solvent and a low temperature stabilizer. Suitable surface-active agents, organic polar solvents and stabilizers are known in the art and are commercially available.
The present invention also provides, in a further aspect, a practical method for preparing an agriculturally acceptable, stable liquid concentrate formulation, the method comprising combining one or more benzoylphenyl urea active ingredients with a solvent is selected from one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers.
Further, the present invention provides the use of a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether to reduce the eye irritancy of a benzoylphenyl urea, in particular when used as active ingredient in a pesticidal formulation.
In a further aspect, the present invention provides the use of a composition as hereinbefore described in the control of pests, in particular insects.
In still a further aspect, the present invention also provides a method of controlling pests, in particular insects, at a locus, the method comprising applying to the locus a composition as hereinbefore described. DETAILED DESCRIPTION OF THE INVENTION
Benzoylphenyl ureas are water-insoluble compounds, and such compounds are strong irritants to eyes. These compounds are commercially formulated into liquid concentrates. Many organic solvents used in Emulsion Concentrate are irritants to eyes. A major problem associated with liquid concentrate formulations is that they may cause irritation to eyes.
In the present invention it has been surprisingly found that certain C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are not only non-irritant to eyes, but also can reduce the irritancy of certain active ingredients, in particular of benzoylphenyl urea to eyes in the final formulation. The C2-C4 dialkylene glycol di-/mono- C-|-C4 alkyl ether is present in the composition in an amount sufficient to reduce the eye irritation of benzoylphenyl urea active ingredient.
It has been found that the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is effective in reducing the eye irritation of the benzoylphenyl urea active ingredient compounds. Thus, the inclusion of one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers in liquid concentrates reduces the eye irritancy of the formulation. In addition, it has been found that the use of C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers in liquid concentrate pesticidal formulations is environmental friendly.
The C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are suitable for preparing water-dilutable, liquid concentrate formulations of sparingly water-soluble, or even water-insoluble, organic pesticide compounds such as benzoylphenyl ureas and, in particular, for reducing the risk of eye irritation caused by liquid insecticide formulations of such pesticide compounds. The one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are present in an amount sufficient to reduce eye irritation of the benzoylphenyl urea compounds. The amount of the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether required to be present will depend upon such factors as the concentration of the benzoylphenyl urea active ingredient and the particular benzoylphenyl urea or ureas present in the formulation. The amount of the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether required to reduce or eliminate the irritancy to eyes of the formulation may be determined without undue experimentation by the skilled person, for example by trial and error.
The C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is preferably present in an amount such as to give a weight ratio of the benzoylphenyl urea active ingredient to the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether of at least 1 : 1 , more preferably at least 1 : 1 .5, still more preferably of at least 1 :2, especially of at least 1 :3. In particular, the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is preferably present in an amount such as to give a weight ratio of the benzoylphenyl urea active ingredient to the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether of from 1 : 1 to 1 :30, more preferably from 1 :2 to 1 :20, still more preferably from 1 :3 to 1 : 15.
The composition may comprise a single C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether or a combination of two or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers.
According to a preferred embodiment of the present invention, the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is at least one member selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol methyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, dibutylene glycol dimethyl ether, dibutylene glycol methyl ether, diethylene glycol diethyl ether, diethylene glycol ethyl ether, dipropylene glycol diethyl ether, dipropylene glycol ethyl ether, dibutylene glycol diethyl ether, dibutylene glycol ethyl ether, diethylene glycol dipropyl ether, diethylene glycol propyl ether, dipropylene glycol dipropyl ether, dipropylene glycol propyl ether, dibutylene glycol dipropyl ether, dibutylene glycol propyl ether, diethylene glycol dibutyl ether, diethylene glycol butyl ether, dipropylene glycol dibutyl ether, dipropylene glycol butyl ether, dibutylene glycol dibutyl ether, dibutylene glycol butyl ether and mixtures thereof.
The composition of the present invention may be prepared in any suitable form. The composition of the present invention is preferably a liquid concentrate, in particular an emulsion concentrate (EC) formulation. The relative amount of C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether present in the composition will depend upon the amount, number and nature of the other components of the composition. In particular, the one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers may be present in an amount of at least 10% by weight, preferably at least 20% by weight, more preferably at least 30% by weight, especially at least 35% by weight. The C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether may be present in the composition in an amount of from 2 to 90% by weight, preferably from 5 to 80% be weight, more preferably from 10 to 75% by weight. An amount of C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether in the range of from 35 to 75% by weight has been found to be particularly suitable in many embodiments.
As noted above, it has been found that C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are effective in reducing the irritancy to eyes of certain benzoylphenyl urea derivatives as active agrochemicals, in particular insecticides. The composition may comprise one or a combination or two or more benzoylphenyl urea derivatives as active ingredient.
In one embodiment, the formulation contains as active ingredient a benzoylphenyl urea selected from the group consisting of novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron, teflubenzuron and mixtures thereof.
The benzoylphenyl urea active ingredient may be present in any suitable amount. Preferably, the benzoylphenyl urea is present in an amount of at least 2% by weight, more preferably at least 3% by weight, still more preferably at least 5% by weight. The benzoylphenyl urea may be present in an amount in the range of from 2 to 50% by weight, preferably in the range of from 3 to 45% by weight, more preferably from 4 to 40%) by weight. An amount of benzoyl urea in the range of from 5 to 35% by weight has been found to be particularly suitable in many embodiments.
In addition to one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers and one or more benzoylphenyl urea derivative active ingredients, the compositions of the present invention may comprise other components as is known in the art. Such further components include, for example one or more organic polar solvents and emulsifiers. Suitable components are known in the art and are commercially available.
Suitable organic polar solvents include one or more alcohols, such as benzyl alcohol, one or more alkyl pyrrolidones, such as N-methylprrolidone, N-octylpyrrolidone, or one or more lactones, such as γ-butyrolactone. Other suitable solvents will be known to the person skilled in the art. The solvent may be present in any suitable amount. In particular, the solvent may be present in an amount in the range of from 10 to 90% by weight of the composition, preferably from 15 to 75% by weight, more preferably from 20 to 60% by weight.
In order that the formulations of the present invention retain their ecological acceptability, it is preferable to include one or more surfactants in the composition. Preferably, the surfactant is one in which the lipophillic moiety is derived from a safe natural product. Such surfactants are usually found in use in food and cosmetic industries. The preferred surfactants for use in the compositions of the present invention are those with an H.L.B range of from 7 to 17.
Depending on the nature of the compound to be formulated, suitable surface-active compounds are nonionic, cationic and/or anionic surfactants or a mixture of such surfactants, the surfactant or surfactant mixture having good emulsifying, dispersing and wetting capabilities. Preferred nonionic surfactants are polyethoxylated castor oil, polyadducts of polypropylene and polyethylene oxide, tributylphenol polyethoxylate, polyethylene glycol and octylphenol polyethoxylate. Fatty acid esters of polyoxyethylene sorbitan, e.g. polyoxyethylene sorbitan trioleate, are also suitable nonionic surfactants.
Preferred cationic surfactants for inclusion in the composition of the present invention include quaternary ammonium salts carrying, as N-substituent, at least one C8-C22 alkyi radical and, as a further substituent, unsubstituted or halogenated lower alkyi, benzyl or hydroxyl- lower alkyi radicals. The salts are preferably in the form of halide, methyl sulfate or ethyl sulfate. Examples of such cationic surfactants are stearyltrimethylammonium chloride and benzyl bis(2-chloroethyl)ethylammonium bromide.
Suitable anionic surfactants for use in the compositions include water-soluble soaps as well as water-soluble synthetic surface-active compounds, alkylarylsulfonates. Typical examples of alkylarylsulfonates are sodium, calcium or triethanolammonium salt of dodecylbenzenesulfonic acid, dibutylnaphthalenesulfonic acid or a condensate of naphthalenesulfonic acid and formaldehyde. Corresponding phosphates, for example salts of phosphoric acid ester of an adduct of p-nonylphenol with 4 to 14 mol of ethylene oxide, or phospholipids, are also suitable.
The surfactant or surfactant mixture may be present in the composition in any suitable amount. Preferably, the surfactant is present in an amount in the range of from 5 to 40% by weight, more preferably from 5 to 35% by weight, still more preferably from 10 to 30% by weight. A surfactant concentration of from 20 to 30% by weight has been found to be particularly suitable in many embodiments.
Further components for inclusion in the composition are well known in the art and include, for example a stabilizer and a thickener. Such components are commercially available and their use will be recognized and understood by the person skilled in the art.
In a further aspect, the present invention provides a liquid concentrate comprising a benzoylphenyl urea and a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether.
Other components that may be included in the liquid concentrate are as hereinbefore described. Details of the components of the liquid concentrate are as given hereinbefore.
In a further aspect, the present invention provides the use of a C2-C4 dialkylene glycol di-/mono- C-|-C4 alkyl ether, preferably the C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ethers as hereinbefore recited, to reduce the eye irritation of insecticidally-active benzoylphenyl urea derivatives.
The compositions of the present invention may be prepared using techniques known in the art. A particularly preferred method of preparing the composition is as follows:
Each component is added according to the weight fraction required in the final composition. First, the solvent as required, and one or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are charged to a suitable mixing vessel, for example a blending tank. The resulting mixture is agitated. The one or more benzoylphenyl urea derivatives are added to the mixture and the agitation continues until the benzoylphenyl urea derivatives are dissolved completely in the solvent. An agitation time of about 30 minutes is typical. Thereafter, further components, such as an emulsifier, if present, are added and the mixture is further agitated to ensure homogeneity. A further agitation time of about 1 hour is typical.
In a further aspect, the present invention provides a method of reducing the eye irritation of insecticide liquid formulations comprising benzoylphenyl urea derivative, comprising adding a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether, preferably those C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers hereinbefore recited, to the formulation in an amount sufficient to reduce the eye irritancy of the benzoylphenyl urea derivative.
Embodiments of the present invention will now be described, by way of example only.
EXAMPLES
In each of the following examples, a composition was prepared according to the following general methodology:
Charge every component based on the recipe of the composition into a vessel in the following manner. First, add the solvent and C2-C4 dialkylene glycol di-/mono-
C C4 alkyl ether to a blending tank; agitate the mixture; add one or more benzoylphenyl urea active ingredients to the resulting mixture in the blending tank; continue agitating for 30 minutes until all benzoylphenyl urea active ingredients are dissolved completely; add the emulsifier to the resulting mixture in the tank; continue agitating for one hour until the mixture is uniform; stop agitating; and discharge the resulting composition from the blending tank. The potential of the formulation to cause eye irritation was determined according to the method described by N. P. Luepke: 'Hen's Egg Chorio Allantoic Membrane Test for Irritation Potential', Fd. Chem. Toxic. 23 (1985), pp 287-291 , (hereafter the ΉΕΤ-CAM Test'), which was modified according to the method of H. Spielmann (H. Spielmann: Methods in Molecular Biology 43 (1995) pp. 199-204, and H. Spielmann et al. ATLA 24 (1996), pp. 741 -858).
In the HET-CAM test the chorio allantoic membrane is treated with test sample. The chorio allantoic membrane is then observed for 5 minutes with regard to haemorrhage, coagulation and vascular lysis. In terms of the time of occurrence and the severity of the symptoms, the test samples were categorized as follows:
Cat 0: strongly irritant
Cat I: irritant
Cat II: moderately irritant Cat III: non-irritant The composition and the eye irritation behavior of compositions according to the present invention, prepared and tested as described above, are described in the following examples, in conjunction with comparative test results given in respective tables.
Example 1 The liquid formulation described in Table 1 was prepared containing the indicated
C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and lufenuron as active ingredient, wherein the ratio of lufenuron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 13. Eye irritancy of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 1 contained C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether in an amount of 65%wt. Table 1 describes the liquid formulation of Example 1 and the comparison formulation, Comparison A.
Table 1
Figure imgf000014_0001
Example 2
The liquid formulation described in Table 2 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and novaluron as active ingredient, wherein the ratio of novaluron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 2 contained the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether in an amount of 60%wt. Table 2 describes the liquid formulation of Example 2 and the comparison formulation, Comparison B.
Table 2
Figure imgf000015_0001
Example 3
The liquid formulation described in Table 3 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and hexaflumuron as active ingredient, wherein the ratio of hexaflumuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :7.25. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ether as eye irritancy reducer.
The formulation of Example 3 contained C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ether in an amount of 58%wt. Table 3 describes the liquid formulation of Example 3 and the comparison formulation, Comparison C.
Table 3
Figure imgf000016_0001
Example 4
The liquid formulation described in Table 4 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and triflumuron as active ingredient, wherein the ratio of triflumuron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 12. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether as eye irritation reducer.
The formulation of Example 4 contained C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 4 describes the liquid formulation of Example 4 and the comparison formulation, Comparison D. Table 4
Figure imgf000017_0001
Example 5
The liquid formulation described in Table 5 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and diflubenzuron as active ingredient, wherein the ratio of diflubenzuron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C -C4 alkyl ether eye irritation reducer.
The formulation of Example 5 contained the C2-C4 dialkylene glycol di-/mono- ( C4 alkyl ether in an amount of 60%wt. Table 5 describes the liquid formulation of Example 5 and the comparison formulation, Comparison E.
Table 5
Figure imgf000018_0001
Example 6
The liquid formulation described in Table 6 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and chlorfluazuron as active ingredient, wherein the ratio of chlorfluazuron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 :2. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- ( C4 alkyl ether as eye irritation reducer.
The formulation of Example 6 contained the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 40%wt. Table 6 describes the liquid formulation of Example 6 and the comparison formulation, Comparison F.
Table 6
Figure imgf000019_0001
Example 7
The liquid formulation described in Table 7 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and flufenoxuron as the active ingreduent, wherein the ratio of flufenoxuron and the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 1 .6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- ( C4 alkyl ether as eye irritation reducer.
The formulation of Example 7 contained the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 40%wt. Table 7 describes the liquid formulation of Example 7 and the comparison formulation, Comparison G.
Table 7
Figure imgf000020_0001
Example 8
The liquid formulation described in Table 8 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and noviflumuron as the active ingredient, wherein the ratio of noviflumuron and C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 12. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- ( C4 alkyl ether as eye irritation reducer.
The formulation of Example 8 contained the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 8 describes the liquid formulation of Example 8 and the comparison formulation, Comparison H.
Table 8
Figure imgf000021_0001
Example 9
The liquid formulation described in Table 9 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and teflubenuron as the active ingredient, wherein the ratio of teflubenuron and the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether was approximately 1 : 15. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- ( C4 alkyl ether as eye irritation reducer.
The formulation of Example 9 contained the C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether in an amount of 60%wt. Table 9 describes the liquid formulation of Example 9 and the comparison formulation, Comparison I.
Table 9
EXAMPLE 9: teflubenuron EC (with : COMPARISON I: teflubenuron EC Remark eye irritation reducer) (without irritation reducer)
Component Composition Component Composition
teflubenuron tech 40kg( as ; teflubenuron tech 40kg ( as Active pure) pure) ingredient
Sodium 100kg Sodium 100kg Emulsifier dodecylphenylsulfonate dodecylphenylsulfonate
TWEEN 80 160kg TWEEN 80 160kg Emulsifier Sorbitan monooleate Sorbitan monooleate
ethoxylate ethoxylate
Gamma-butyrolactone 100kg Gamma-butyrolactone 700kg Solvent dipropylene glycol ethyl 600kg Eye ether irritation reducer
Total 1000kg Total 1000kg Example 10
The liquid formulation described in Table 10 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of novaluron and lufenuron as active ingredients, wherein the ratio of novaluron plus lufenuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 10 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 60%wt. Table 10 describes the liquid formulation of Example 10 and the comparison formulation, Comparison J.
Table 10
Figure imgf000023_0001
Example 11
The liquid formulation described in Table 11 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of triflumuron and hexaflumuron as active ingredients, wherein the ratio of triflumuron plus hexaflumuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :2.5. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 11 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 50%wt. Table 11 describes the liquid formulation of Example 11 and the comparison formulation, Comparison K.
Table 11
Figure imgf000024_0001
Example 12
The liquid formulation described in Table 12 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of diflubenzuron and chlorfluazuron as active ingredients, wherein the ratio of diflubenzuron plus chlorfluazuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :2.75. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 12 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 55%wt. Table 1 describes the liquid formulation of Example 12 and the comparison formulation, Comparison L.
Table 12
Figure imgf000025_0001
Example 13
The liquid formulation described in Table 13 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of flufenoxuron and noviflumuron as active ingredients, wherein the ratio of flufenoxuron plus noviflumuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 : 1 .4. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 13 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 35%wt. Table 13 describes the liquid formulation of Example 1 and the comparison formulation, Comparison M.
Table 13
Figure imgf000026_0001
Example 14
The liquid formulation described in Table 1 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ether and a combination of noviflumuron and teflubenzuron as active ingredients, wherein the ratio of noviflumuron plus teflubenzuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 : 1 .3. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 14 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 40%wt. Table 14 describes the liquid formulation of Example 14 and the comparison formulation, Comparison N.
Table 14
Figure imgf000027_0001
Example 15
The liquid formulation described in Table 15 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of novaluron and hexaflumuron as active ingredients, wherein the ratio of novaluron plus hexaflumuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 15 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 65%wt. Table 15 describes the liquid formulation of Example 15 and the comparison formulation, Comparison O.
Table 15
EXAMPLE 15: COMPARISON O: Remark novaluron+hexaflumuron EC (with eye I novaluron+hexaflumuron EC (without
irritation reducer) I irritation reducer)
Component Composition I Component Composition
novaluron tech 50kg( as 1 novaluron tech 50kg ( as Active pure) pure) ingredient
Hexaflumuron tech 50kg(as 1 Hexaflumuron tech 50kg(as Active pure) pure) ingredient
Sodium 100kg f Sodium 100kg Emulsifier dodecylphenylsulfonate f dodecylphenylsulfonate
TWEEN 80 100kg TWEEN 80 100kg Emulsifier
Sorbitan monooleate 1 Sorbitan monooleate
ethoxylate I ethoxylate
Gamma-butyrolactone 100kg I Gamma-butyrolactone 700kg Solvent dipropylene glycol 600kg Eye propyl ether irritation reducer
Total 1000kg I Total 1000kg Example 16
The liquid formulation described in Table 16 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and triflumuron as active ingredients, wherein the ratio of lufenuron plus triflumuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :2.9. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 16 contained the C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ether in an amount of 52%wt. Table 16 describes the liquid formulation of Example 16 and the comparison formulation, Comparison P.
Table 16
Figure imgf000029_0001
Example 17
The liquid formulation described in Table 17 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and diflubenzuron as active ingredients, wherein the ratio of lufenuron plus diflubenzuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 : 1 .8. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 17 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 45%wt. Table 17 describes the liquid formulation of Example 17 and the comparison formulation, Comparison Q.
Table 17
Figure imgf000030_0001
Example 18
The liquid formulation described in Table 18 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and chlorfluazuron as active ingredients, wherein the ratio of lufenuron plus chlorfluazuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 : 1 .4. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 18 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 65%wt. Table 18 describes the liquid formulation of Example 18 and the comparison formulation, Comparison R.
Table 18
Figure imgf000031_0001
Example 19
The liquid formulation described in Table 19 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and flufenoxuron as active ingredients, wherein the ratio of lufenuron plus flufenoxuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :7. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 19 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 70%wt. Table 19 describes the liquid formulation of Example 19 and the comparison formulation, Comparison S.
Table 19
Figure imgf000032_0001
Example 20
The liquid formulation described in Table 20 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and noviflumuron as active ingredients, wherein the ratio of lufenuron plus noviflumuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 : 1. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 20 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 35%wt. Table 20 describes the liquid formulation of Example 20 and the comparison formulation, Comparison T.
Table 20
Figure imgf000033_0001
Example 21
The liquid formulation described in Table 21 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of lufenuron and teflubenzuron as active ingredients, wherein the ratio of lufenuron plus teflubenzuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :6. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 1 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 60%wt. Table 21 describes the liquid formulation of Example 21 and the comparison formulation, Comparison U.
Table 21
Figure imgf000034_0001
Example 22
The liquid formulation described in Table 22 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of triflumuron and teflubenzuron as active ingredient, wherein the ratio of triflumuron plus teflubenzuron and the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :2. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 22 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 40%wt. Table 22 describes the liquid formulation of Example 22 and the comparison formulation, Comparison V.
Table 22
Figure imgf000035_0001
Example 23
The liquid formulation described in Table 23 was prepared containing the indicated C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether and a combination of triflumuron and noviflumuron as active ingredients, wherein the ratio of triflumuron plus noviflumuron and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether was approximately 1 :3.3. Eye irritation of this formulation was compared with a second liquid formulation, which was prepared from identical components in an identical manner, but without any C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether as eye irritation reducer.
The formulation of Example 23 contained the C2-C4 dialkylene glycol di-/mono-
Ci-C4 alkyl ether in an amount of 50%wt. Table 23 describes the liquid formulation of Example 23 and the comparison formulation, Comparison 23.
Table 23
Figure imgf000036_0001
Example 24
The potential of the formulation to cause eye irritation was determined according to the method described by N. P. Luepke: Hen's Egg Chorio Allantoic Membrane Test for Irritation Potential, Fd. Chem. Toxic. 23 (1985), pp 287-291 , (HET-CAM Test) which was modified according to the method of H. Spielmann (H. Spielmann: Methods in Molecular Biology 43 (1995) pp. 199-204, and H. Spielmann et al. ATLA 24 (1996), pp. 741-858).
In the HET-CAM test the chorio allantoic membrane is treated with test sample. The chorio allantoic membrane is then observed for 5 minutes with regard to haemorrhage, coagulation and vascular lysis. In terms of the time of occurrence and the severity of the symptoms, the test samples are categorized as follows:
Cat 0: strongly irritant
Cat I: irritant
Cat II: moderately irritant
Cat III: non-irritant
Examples Results
Example 1 Cat III
Comparison A Cat O
Example 2 Cat III
Comparison B Cat O
Example 3 Cat III
Comparison C Cat O
Example 4 Cat II
Comparison D Cat O
Example 5 Cat III
Comparison E Cat O
Example 6 Cat II
Comparison F Cat O
Example 7 Cat II
Comparison G Cat O
Example 8 Cat III
Comparison H Cat O
Example 9 Cat III
Comparison I Cat O Example 10 Cat III
Comparison J Cat O
Example 1 1 Cat III
Comparison K Cat O
Example 12 Cat III
Comparison L Cat O
Example 13 Cat II
Comparison M Cat O
Example 14 Cat II
Comparison N Cat O
Example 15 Cat III
Comparison 0 Cat O
Example 16 Cat III
Comparison P Cat O
Example 17 Cat II
Comparison Q Cat O
Example 18 Cat II
Comparison R Cat O
Example 19 Cat III
Comparison S Cat O
Example 20 Cat II
Comparison T Cat O
Example 21 Cat III
Comparison U Cat O
Example 22 Cat II
Comparison V Cat O
Example 23 Cat III
Comparison W Cat O
From the experimental data set out above, it can be seen that C2-C4 dialkylene glycol di-/mono- C1-C4 alkyl ethers above exhibit significant performance in reducing the eye irritation of the insecticidally active benzoylphenyl urea derivatives.

Claims

1 . An agrochemical composition comprising a C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ether, at least one benzoylphenyl urea active ingredient and optionally at least one member selected from the group consisting of a surface-active agent, an organic polar solvent and a low temperature stabilizer.
2. The composition according to claim 1 , wherein the ratio of benzoylphenyl urea active ingredient and C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is from 1 :1 to 1 :30, preferably from 1 :3 to 1 : 15.
3. The composition according to any preceding claim, wherein two or more C2-C4 dialkylene glycol di-/mono- C C4 alkyl ethers are present.
4. The composition according to any preceding claim, wherein two or more benzoylphenyl urea active ingredients are present.
5. The composition according to any preceding claim, wherein the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is one or more selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol methyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, dibutylene glycol dimethyl ether, dibutylene glycol methyl ether, diethylene glycol diethyl ether, diethylene glycol ethyl ether, dipropylene glycol diethyl ether, dipropylene glycol ethyl ether, dibutylene glycol diethyl ether, dibutylene glycol ethyl ether, diethylene glycol dipropyl ether, diethylene glycol propyl ether, dipropylene glycol dipropyl ether, dipropylene glycol propyl ether, dibutylene glycol dipropyl ether, dibutylene glycol propyl ether, diethylene glycol dibutyl ether, diethylene glycol butyl ether, dipropylene glycol dibutyl ether, dipropylene glycol butyl ether, dibutylene glycol dibutyl ether, dibutylene glycol butyl ether and mixtures thereof.
6. The composition according to any preceding claim, wherein the C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether is present in an amount of from 5% to 80% by weight.
7. The composition according to any preceding claim, wherein the benzoylphenyl urea derivative is one or more selected from the group consisting of novaluron, lufenuron, hexaflumuron .triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron and mixtures thereof.
8. The composition according to any preceding claim, wherein the benzoylphenyl urea is present in an amount of from 2 to 50% by weight.
9. The composition according to any preceding claim, further comprising a polar solvent.
10. The composition according to claim 9, wherein the polar solvent is one or more selected from the group consisting of benzyl alcohol, an alkyl pyrrolidone such as N-metylprrolidone, N-octylpyrrolidone, or a lactone such as γ-butyrolactone.
1 1. The composition according to either of claims 9 or 10, wherein the polar solvent is present in an amount of from 10 to 90% by weight.
12. The composition according to any preceding claim, further comprising an emulsifier.
13. The composition according to claim 12, wherein the emulsifier is present in an amount of from 5 to 40% by weight.
14. The composition according to any preceding, being a liquid concentrate, in particular an emulsion concentrate (EC) formulation.
15. A use of a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether to reduce eye irritation of an insecticidal benzoylphenyl urea derivative.
16. The use according to claim 15, wherein the C2-C4 dialkylene glycol di-/mono- Ci-C4 alkyl ether is combined with the benzoylphenyl urea derivative in an insecticidal composition.
17. A method of reducing eye irritation of insecticidal liquid formulations comprising a benzoylphenyl urea derivative, the method comprising including a C2-C4 dialkylene glycol di-/mono- C C4 alkyl ether in the formulation in an amount sufficient to reduce eye irritation of the benzoylphenyl urea derivative.
18. A method of treating pest at a locus, comprising applying to the locus a composition as claimed in any of claims 1 to 14.
19. The method according to claim 18, wherein the composition is an emulsion concentrate, the composition being dispersed in water before application to the locus.
20. The use of a composition according to any of claims 1 to 14 in the control of pests.
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TWI409032B (en) 2013-09-21
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GB2495659B (en) 2017-10-04
CN103037689A (en) 2013-04-10
BRPI1002174A2 (en) 2012-03-13
AP3460A (en) 2015-11-30
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CO6650418A2 (en) 2013-04-15
CL2012003563A1 (en) 2013-12-06
AR081951A1 (en) 2012-10-31

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