WO2010113692A1 - 農薬の効力を増強する方法および農薬含有組成物 - Google Patents
農薬の効力を増強する方法および農薬含有組成物 Download PDFInfo
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- WO2010113692A1 WO2010113692A1 PCT/JP2010/054926 JP2010054926W WO2010113692A1 WO 2010113692 A1 WO2010113692 A1 WO 2010113692A1 JP 2010054926 W JP2010054926 W JP 2010054926W WO 2010113692 A1 WO2010113692 A1 WO 2010113692A1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, 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
- A01N25/24—Biocides, 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 ingredients to enhance the sticking of the active ingredients
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, 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
- A01N25/02—Biocides, 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
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
Definitions
- the present invention relates to a method for enhancing the efficacy of an agrochemical and an agrochemical-containing composition.
- Agrochemicals including insecticides, fungicides, herbicides, acaricides, plant growth regulators are used in dosage forms such as emulsions, wettable powders, granules, powders, flowables, and liquids. At that time, in order to sufficiently bring out the effects of the agricultural chemicals, various ideas have been made on the physical properties of the preparation.
- agrochemical-containing compositions have been used in order to bring out the effects of agrochemicals sufficiently.
- an agrochemical-containing composition that is highly effective for bipyridinium herbicides can be obtained by combining an anionic surfactant and a chelating agent (see, for example, Patent Document 1).
- a highly effective agrochemical-containing composition can be obtained by adding a chelating agent to a cationic surfactant and adding another surfactant (see, for example, Patent Document 2).
- An object of the present invention is to provide a method for enhancing the efficacy of an agrochemical and an agrochemical-containing composition.
- the present inventors have found that combining a specific cellulose derivative and a specific organic solvent with a pesticide has the effect of improving the efficacy of the pesticide, and have completed the present invention.
- the present invention is a method for enhancing the efficacy of an agrochemical by using a composition comprising hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water.
- a composition comprising hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water.
- the content is 100% by weight
- the content of the organic solvent is 0.02 to 1% by weight
- the weight ratio of the hydroxypropyl cellulose to the organic solvent hydroxypropyl cellulose / organic solvent
- the present invention is a pesticide-containing composition
- a pesticide-containing composition comprising hydroxypropyl cellulose, an agricultural chemical, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C. and water, and the organic solvent is 100% by weight when the entire composition is 100% by weight.
- the weight ratio of hydroxypropylcellulose to the organic solvent is 0.1 to 2.
- the present invention is a method for improving plant quality including a step of applying the agrochemical-containing composition of the present invention to a plant.
- the efficacy of agricultural chemicals can be enhanced.
- the mechanism of the present invention is not clear, but the following mechanism is conceivable as one of the possible mechanisms.
- a specific organic solvent specifically, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C.
- the composition is compared with the case where only water is used as the solvent. Is applied to plants, the rate at which the solvent evaporates from the composition is increased.
- the composition using such a specific organic solvent has an effect that the viscosity rapidly increases on the surface of the applied plant, so that the agricultural chemical is easily fixed on the surface of the plant.
- the surface active ability and film forming ability of hydroxypropyl cellulose are exerted, and a film containing agricultural chemicals is easily formed on the surface of the applied plant.
- the effect is that the agricultural chemicals are easily fixed on the surface of the plant.
- Hydroxypropylcellulose Hydroxypropyl cellulose is represented by the following formula.
- R H or — (CH 2 CH (CH 3 ) —O) m H (wherein m represents 0 or an integer of 1 to 5, provided that all of R in formula (I) are simultaneously m is not 0.)
- the degree of polymerization (n) of hydroxypropylcellulose is, for example, 30 to 1,500, and is preferably 40 to 1,200, more preferably 70 to 500, from the viewpoint of enhancing the efficacy of agricultural chemicals. .
- the viscosity measured at 2% by weight and 20 ° C. is, for example, 1.0 to 10,000 mPa ⁇ s, preferably 2.0 to 4,000 mPa ⁇ s, more preferably from the viewpoint of improving the enhancement of agricultural chemicals. Is 3.0 to 1,000 mPa ⁇ s.
- Hydroxypropyl cellulose may be produced by a method known in the literature, or a commercially available product may be obtained.
- Pesticides As the agrochemical used in the method for enhancing the efficacy of the agrochemical of the present invention and the agrochemical-containing composition, known ones can be used: (B1) fungicides, (B2) insecticides, (B3) acaricides, and (B4) ) Pesticides selected from the group consisting of herbicides selected from glyphosate agents and bialaphos agents are preferred. For example, in “Agricultural chemical handbook 1998 edition” (10th edition, December 15, 1998, published by the Japan Plant Protection Association) What has been described.
- (B1) As bactericides, as organic sulfur bactericides, dinebu, manneb, thiuram, manzeb, polycarbamate, propineb, etc.
- benzimidazole bactericides benomyl, thiophanate methyl, etc.
- dicarboxylic acid Systemic bactericides such as iprodione and procymidone, and other synthetic bactericides such as triazine, iminoctadine triacetate, isoprothiolane, TPN, probenazole, captan, fluorimide, DPC, iminoctadine albesic acid
- Sterol biosynthesis inhibitors include trifumizole, vitertanol, pyriphenox, phenarimol, triphorin, triadimephone, microbutanyl, difenoconazole, imibenconazole, etc., acid amide fungicide Metallaxyl agent, mepronil agent, etc.
- Inorganic bactericides such as inorganic sulfur agents and bicarbonates, methoxy acrylate bactericides such as azoxystrobin and cresoxime methyl agents, anilinopyrimidine bactericides such as mepanipyrim agents, and synthetic antibacteria Oxolinic acid agents, etc. Chin, etc., as a fungicide of biological origin, versus antimicrobial agents.
- pyrethroid insecticides include fenvalerate, cyfluthrin, permethrin, flucitrinate, etofenprox, etc., and organophosphorus insecticides such as DDVP, MEP, marathon Agents, dimethoate agents, PAP agents, MPP agents, DMTP agents, EPN agents, carbamate insecticides, BPMC agents, NAC agents, mesomil agents, etc., nereistoxin insecticides, cartap agents, etc., natural products
- the insecticides include pyrethrins derived from pesticide chrysanthemums, piperonyl butoxides, rotenones derived from leguminous shrubs, nicotine, soy lecithin, starch and the like.
- insect growth regulators IGR agents
- insect growth regulators include diflubenzuron, teflubenzuron, chlorfluazuron, buprofezin, isoprothi
- (B3) acaricide, Kelsen agent, BPPS agent, fenbutasine oxide agent, hexythiazox agent, amitraz agent, fenpyroximate agent, tebufenpyrad agent, harfenprox agent, bialaphos agent, etc., as chloronicotinyl insecticides, Other synthetic insecticides such as imidacloprid, sodium oleate, potassium oleate, etc., nematicides, DD, tazomet, benomyl, etc. BT as biological insecticides Agents and the like.
- acid amide herbicides include DCPA agents, alachlor agents, ashram agents, and urea herbicides include DCMU agents, reneuron agents, and the like.
- bipyridylium herbicides include paraquat agents and diquat agents.
- diazine herbicides include bromacil and lenacyl agents.
- S-triazine herbicides include CAT agents and simethrin agents.
- other organic herbicides include nitrile herbicides such as DBN agents, cetoxydim agents, and cretodim agents.
- dinitroaniline herbicide include trifluralin and pendimethalin.
- carbamate herbicides include thiobencarb agents.
- aromatic carboxylic acid herbicides include MDBA agents.
- phenoxy acid herbicide examples include 2,4-PA agent and cyhalohop butyl agent.
- organophosphorous herbicides include piperophos agents and butamiphos agents.
- Examples of fatty acid herbicides include pelargonic acid agents and DPA agents.
- Examples of the sulfonylurea herbicide include thifensulfuron methyl agent, furazalusulfuron agent, bensulfuron methyl agent and the like.
- Examples of the pyrimidyloxybenzoic acid herbicide include bispyribac sodium salt.
- Examples of diazole herbicides include pyrazolate agents.
- herbicides acid amide herbicides, diazine herbicides, nitrile herbicides, dinitroaniline herbicides, aromatic carboxylic acid herbicides from the viewpoint of enhancing agricultural chemicals, that is, improving herbicidal power And amino acid herbicides are preferred.
- the content of the pesticide is preferably 0.02 to 1% by weight, more preferably 0.03 to 1% by weight, more preferably 0.04% from the viewpoint of improving the enhancement of the pesticide when the entire composition is 100% by weight. More preferred is ⁇ 1% by weight.
- the organic solvent is an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C.
- the saturated vapor pressure of the organic solvent means the pressure of the gas when the liquid and the gas of the organic solvent which is a pure substance are in an equilibrium state. This saturated vapor pressure can be measured by a direct method using a U-shaped mercury pressure gauge.
- the rate at which the solvent evaporates from the composition is higher when the composition is applied to plants as compared to the case of using only water as the solvent.
- the composition using such a specific organic solvent has an effect that the viscosity rapidly increases on the surface of the applied plant, so that the agricultural chemical is easily fixed on the surface of the plant.
- Examples of the organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C. include ethanol (59 mmHg), trifluoroethanol (75 mmHg), dichloroethane (83 mmHg), acetonitrile (88 mmHg), methyl ethyl ketone (91 mmHg), ethyl acetate (95 mmHg), cyclohexane (98 mmHg), trifluoroacetic acid (108 mmHg), methanol (127 mmHg), diisopropyl ether (149 mmHg), tetrahydrofuran (162 mmHg), chloroform (195 mmHg), acetone (231 mmHg), dichloromethane (436 mmHg), diethyl ether (537 mmHg) and the like.
- the organic solvent is preferably an organic solvent having a saturated vapor pressure of 55 mmHg or higher at 25 ° C., more preferably 70 mmHg or higher, more preferably 90 mmHg or higher, and more preferably 100 mmHg from the viewpoint of improving the enhancement of agricultural chemicals.
- the above organic solvents are more preferable.
- the content of the organic solvent is 0.02 to 1% by weight, based on 100% by weight of the entire composition, but is preferably 0.03 to 1% by weight from the viewpoint of improving the enhancement of agricultural chemicals.
- the content is more preferably from 03 to 0.8% by weight, and further preferably from 0.03 to 0.1% by weight.
- the weight ratio of hydropicipropylcellulose to the organic solvent depends on the stability of the agrochemical-containing composition and the evaporation of the solvent and hydropicipropyl. From the viewpoint of adhering agricultural chemicals by forming a film of cellulose, it is from 0.1 to 2, preferably from 0.2 to 1.7, and more preferably from 0.5 to 1.0 from the viewpoint of enhancing the effectiveness of agricultural chemicals. It is.
- the weight ratio of hydropicipropylcellulose to the organic solvent in a composition containing hydroxypropylcellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water (hydropicipropyl) Cellulose / organic solvent) is 0.1 to 2 from the viewpoint of stability of the agrochemical-containing composition and fixation of the agrochemical by evaporation of the solvent and formation of a film of hydropicipropylcellulose.
- the agrochemical-containing composition of the present invention contains water, but its content is preferably 95% by weight or more, and 97% by weight or more when the entire composition is 100% by weight from the viewpoint of enhancing the effectiveness of the agricultural chemical. Is more preferable, and 98 weight% or more is further more preferable.
- the water content is preferably 95% by weight or more, 97% by weight or more is more preferable, and 98% by weight or more is more preferable.
- the agrochemical-containing composition of the present invention may further contain a surfactant, a chelating agent, a pH adjuster, inorganic salts, a thickener, a plant growth regulator, a fertilizer, a preservative, and the like.
- the composition containing hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water is a surfactant, chelating agent, pH adjuster, inorganic It may further contain salts, thickeners, plant growth regulators, fertilizers, preservatives and the like.
- ⁇ Surfactant> In the agrochemical-containing composition of the present invention, by further using a surfactant in combination with hydroxypropylcellulose, the amount of hydroxypropylcellulose used should be reduced while maintaining the effect of enhancing the effectiveness of the agricultural chemical of hydroxypropylcellulose. Can do.
- a nonionic surfactant As the surfactant, a nonionic surfactant, an anionic surfactant, a cationic surfactant and an amphoteric surfactant, or a mixture thereof can be used.
- the composition containing hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water can be further combined with a surfactant. It is possible to reduce the amount of hydroxypropylcellulose used while maintaining the effect of enhancing the effectiveness of cellulose agricultural chemicals.
- a nonionic surfactant, an anionic surfactant, a cationic surfactant and an amphoteric surfactant, or a mixture thereof can be used.
- Nonionic surfactants include polyoxyalkylene alkyl ethers such as polyoxyethylene alkyl ethers (eg, polyoxyethylene oleyl ether), polyoxyalkylene alkyl aryl ethers such as polyoxyethylene alkylphenol, and polyoxyalkylene alkyl aryl ether formaldehyde condensations.
- polyoxyalkylene alkyl ethers such as polyoxyethylene alkyl ethers (eg, polyoxyethylene oleyl ether), polyoxyalkylene alkyl aryl ethers such as polyoxyethylene alkylphenol, and polyoxyalkylene alkyl aryl ether formaldehyde condensations.
- polyoxyalkylene aryl ethers polyoxyalkylene alkyl esters, polyoxyalkylene alkyl sorbitol esters, polyoxyalkylene sorbitan esters, polyoxyalkylene alkyl glycerol esters, polyoxyalkylene block copolymers (eg containing polyoxypropylene groups) ), Polyoxyalkylene block copolymer alkylglycerol ester, Polyoxyalkylene alkyl sulfonamides, polyoxyalkylene rosin ester, alkyl glycoside, alkyl polyglycoside, such as polyoxyalkylene alkyl polyglycosides, and the like a mixture of two or more of these.
- cationic surfactants include monoalkyl di-lower alkyl amines, dialkyl mono-lower alkyl amines, alkyl amine ethylene oxide adducts, alkyl amine propylene oxide adducts such as tallow amine ethylene oxide adducts, oleyl amine ethylene oxide adducts, soy Amine ethylene oxide adducts, cocoamine ethylene oxide adducts, synthetic alkylamine ethylene oxide adducts, octylamine ethylene oxide adducts and the like and quaternized compounds thereof (for example, 4 by methyl chloride, dimethyl sulfate, diethyl sulfate, benzyl chloride, etc.) Grades) and mixtures thereof.
- quaternized compounds thereof for example, 4 by methyl chloride, dimethyl sulfate, diethyl sulfate, benzyl chloride, etc.
- anionic surfactants typical ones can be obtained in aqueous solution or in the solid state, examples of which are sodium mono- and di-alkylnaphthalene sulfonates, sodium alpha-olefin sulfonates, alkane sulfonic acids.
- amphoteric surfactants include Armox C / 12, Monaterics, Milanols, Betaine, Lonzaines, and mixtures thereof.
- nonionic surfactants are particularly preferable from the viewpoint of enhancing the efficacy of agricultural chemicals, and among them, polyoxyalkylene alkyl ethers (especially polyoxyethylene alkyl ethers), polyoxyalkylenes are preferred. Sorbitan esters (particularly polyoxyethylene sorbitan esters) are preferred.
- the preferred ratio of the combined use of hydroxypropyl cellulose and the surfactant is, from the viewpoint of enhancing the efficacy of the agricultural chemical, the weight ratio (hydroxypropyl cellulose / surfactant) is The range is from 0.01 to 50, more preferably from 0.1 to 50, still more preferably from 0.1 to 30, and still more preferably from 0.2 to 10.
- the composition containing hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water further contains a surfactant
- the preferred ratio of the combined use with the surfactant is 0.01 to 50, and more preferably 0.1 to 50, by weight (hydroxypropylcellulose / surfactant). More preferably, it is 0.1-30, and still more preferably 0.2-10.
- the agrochemical-containing composition of the present invention may further contain a chelating agent from the viewpoint of enhancing the efficacy of the agrochemical.
- the chelating agent is not particularly limited as long as it has the ability to chelate metal ions.
- the composition containing hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water is used from the viewpoint of enhancing the efficacy of the agricultural chemical. Further, it may be included.
- chelates used in the present invention include aminopolycarboxylic acid chelating agents, aromatic and aliphatic carboxylic acid chelating agents, amino acid chelating agents, ether polycarboxylic acid chelating agents, iminodimethylphosphonic acid (IDP). Phosphonic acid chelating agents such as alkyldiphosphonic acid (ADPA), hydroxycarboxylic acid chelating agents, phosphoric acid chelating agents, polymer electrolyte (including oligomer electrolyte) chelating agents, and dimethylglyoxime (DG). It is done.
- ADPA alkyldiphosphonic acid
- hydroxycarboxylic acid chelating agents phosphoric acid chelating agents
- polymer electrolyte (including oligomer electrolyte) chelating agents and dimethylglyoxime (DG). It is done.
- These chelating agents may be in the free acid form or in the form of a salt such as sodium salt, potassium salt, or ammonium
- aminopolycarboxylic acid chelating agents a) a compound represented by the chemical formula RNY 2 ; b) The compound represented by the chemical formula NY 3, c) a compound represented by the chemical formula R-NY-CH 2 CH 2 -NY-R, d) a compound represented by the chemical formula R—NY—CH 2 CH 2 —NY 2 ; e) a compound represented by the chemical formula Y 2 N—R′—NY 2 ; f) A compound similar to the compound of e) and containing 4 or more Y, for example the formula:
- Y represents —CH 2 COOH or —CH 2 CH 2 COOH
- R represents a group constituting this kind of known chelating agent such as a hydrogen atom, an alkyl group, a hydroxyl group, and a hydroxyalkyl group
- aminopolycarboxylic acid chelating agents include ethylenediaminetetraacetic acid (EDTA), cyclohexanediaminetetraacetic acid (CDTA), nitrilotriacetic acid (NTA), iminodiacetic acid (IDA), and N- (2-hydroxyethyl) iminodiacetic acid.
- EDTA ethylenediaminetetraacetic acid
- CDTA cyclohexanediaminetetraacetic acid
- NTA nitrilotriacetic acid
- IDA iminodiacetic acid
- GEDTA glycol etherdiaminetetraacetic acid
- aromatic and aliphatic carboxylic acid chelating agents include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, itaconic acid, aconitic acid, pyruvic acid, salicylic acid, acetylsalicylic acid, hydroxybenzoic acid, aminobenzoic acid
- acids including anthranilic acid
- phthalic acid trimellitic acid and gallic acid
- salts thereof methyl esters and ethyl esters.
- amino acid chelating agents include glycine, serine, alanine, lysine, cystine, cysteine, ethionine, tyrosine, methionine, and salts and derivatives thereof.
- examples of the ether polycarboxylic acid chelating agent include diglycolic acid, a compound represented by the following formula, an analogous compound thereof, and a salt thereof (for example, a sodium salt).
- Y 1 represents a hydrogen atom, —CH 2 COOH or —COOH
- Z 1 represents a hydrogen atom, —CH 2 COOH or
- hydroxycarboxylic acid chelating agents include malic acid, citric acid, glycolic acid, gluconic acid, heptonic acid, tartaric acid, lactic acid, and salts thereof.
- Examples of phosphoric acid chelating agents include orthophosphoric acid, pyrophosphoric acid, triphosphoric acid and polyphosphoric acid.
- polyelectrolyte (including oligomer electrolyte) chelating agents include acrylic acid polymer, maleic anhydride polymer, ⁇ -hydroxyacrylic acid polymer, itaconic acid polymer, and two constituent monomers of these polymers The copolymer which consists of the above and an epoxy succinic acid polymer are mentioned.
- ascorbic acid, thioglycolic acid, phytic acid, glyoxylic acid and glyoxalic acid, and salts thereof can also be suitably used as chelating agents.
- the chelating agent is blended at a ratio of 0.05 to 15 times mol with respect to 1 mol of the total amount of hydroxypropylcellulose.
- the chelating agent is blended at a ratio of 0.05 to 15 times mol with respect to 1 mol of the total amount of hydroxypropylcellulose.
- the chelating agent is blended at a ratio of 0.05 to 15 moles per mole of the total amount of hydroxypropylcellulose.
- ⁇ PH adjuster> Known pH adjusting agents that can be used in the present invention can be used.
- inorganic salts that can be used in the present invention include inorganic mineral salts such as inorganic salt clay, talc, bentonite, zeolite, calcium carbonate, diatomaceous earth, and white carbon.
- inorganic ammonium salts include ammonium sulfate, ammonium nitrate, and phosphoric acid. Examples include ammonium, ammonium thiocyanate, ammonium chloride, and ammonium sulfamate.
- the efficacy of the agricultural chemical is enhanced.
- auxin antagonists include maleic acid hydrazide agents, uniconazole agents, etc.
- auxin agents include indole butyric acid agents, 1-naphthylacetamide agents, 4-CPA agents
- cytokinin agents include Chlorfenuron, etc., gibberellin as gibberellin, etc., other dwarfing agents, such as daminogit, etc., transpiration inhibitors as paraffin, etc., other plant growth regulators as choline, etc.
- biological plant growth regulators include chlorella extract agents, and examples of ethylene agents include ethephon agents.
- it is 0.1-50, more preferably 0.1-30, and still more preferably 0.2-10.
- the efficacy of the agricultural chemical when the composition containing hydroxypropyl cellulose, an organic solvent having a saturated vapor pressure of 50 mmHg or higher at 25 ° C., and water further contains a plant growth regulator, the efficacy of the agricultural chemical
- the formulation type of the agrochemical-containing composition of the present invention may be any of emulsion, flowable formulation, liquid formulation, etc., and the formulation type is not limited. Therefore, it may contain other additives such as emulsifiers, dispersants, carriers and the like according to the formulation type.
- the method of using the agrochemical-containing composition according to the present invention can achieve the effect of enhancing the efficacy of the present invention by using the various types of agrochemical-containing compositions containing the agrochemical-containing composition.
- the method for improving plant quality of the present invention includes the step of applying the agrochemical-containing composition of the present invention to plants.
- the agricultural chemical is a herbicide, for example, in a field, a fallow land, a paddy field, an orchard, a meadow, a lawn, a forest, a non-agricultural land.
- the effect of the herbicide can be improved.
- the agricultural chemical is an insecticide or a fungicide
- the effect of the insecticide or fungicide on the plant can be improved respectively.
- agrochemical-containing composition of the present invention can be sprayed directly on plants such as leaves, stems, fruits, etc., or diluted and mixed with hydroponics or feed water that is in contact with the roots, such as hydroponics or rock wool.
- a method of supplying (coating) to the root surface or the like can be mentioned.
- the agrochemical-containing composition of the present invention has a surprising effect that the agrochemical quickly adheres to the surface of the plant, as a method for supplying the agrochemical-containing composition of the present invention to the plant,
- the method of spraying is preferable, and the method of spraying on the leaf surface is more preferably used.
- the plant may be immersed in a container containing the agrochemical-containing composition of the present invention.
- the amount of fixation was determined by extracting active ingredients from sprayed cucumber seedlings as in the sterilization test.
- the fixed amount relative value was calculated by the following formula. It shows that the agricultural chemical has adhered to the object plant, so that the fixed amount relative value is high. Specifically, after treatment with the test solution, the above-ground portion was cut out from the cucumber seedling and quantified, and then acetonitrile was added to extract benrate adhering to the surface. After extraction to dryness, the sample was dissolved in a fixed amount of methanol to prepare a sample. The sample was quantitatively analyzed under the following conditions.
- the amount of adhering was quantified by extracting the active ingredients from the treated planthopper as in the insecticidal test.
- the fixed amount relative value was calculated by the following formula. It shows that agrochemical has adhered to the target pest, so that the fixed amount relative value is high. Specifically, it was quantified as follows.
- Acetone was added to the planthopper after the test solution treatment to extract sumithion adhered to the surface. After extraction to dryness, the sample was dissolved in a fixed amount of methanol to prepare a sample. The sample was quantitatively analyzed under the following conditions.
- Trebon quantification Trebon adhered to the surface was extracted by adding acetone to the planthopper after the test solution treatment. After extraction to dryness, the sample was dissolved in a fixed amount of methanol to prepare a sample. The sample was quantitatively analyzed under the following conditions.
- Analytical instrument High-performance liquid chromatograph detector: Ultraviolet spectrophotometric detector Operation condition
- Column packing Octadecylsilylated silica gel (particle size 5 ⁇ m)
- Detector Wavelength 225nm
- Nissoran wettable powder effective weight of 10% by weight as hexythiazox
- Osadang wettable powder 25 effective weight of 25% by weight of fenbutasine oxide
- the entire leaf disk was immersed in the test solution for 5 seconds, taken out from the test solution, and allowed to stand after standing at 25 ° C. for 48 hours, and the acaricidal rate was calculated using the following formula based on the case of no treatment. The higher the miticide rate, the higher the pesticide efficacy.
- the amount of adhering was quantified by extracting active ingredients from mites treated in the same manner as the insecticidal test.
- the fixed amount relative value was calculated by the following formula. It shows that agrochemical has adhered to the target pest, so that the fixed amount relative value is high. Specifically, it was quantified as follows.
- Nissoran Acetonitrile was added to and extracted from the Kanzawa spider mite after the test solution treatment. After extraction to dryness, the sample was dissolved in a fixed amount of methanol to prepare a sample. Quantitative analysis was performed under the following conditions.
- Analytical instrument High-performance liquid chromatograph detector: Ultraviolet spectrophotometric detector Operation condition
- Column packing Octadecylsilylated silica gel (particle size 5 ⁇ m)
- Detector Wavelength 235nm
- Analytical instrument Gas chromatograph detector: Flame photometric detector (wavelength 610 nm) Operation condition column: inner diameter 0.32 mm x length 30 m Column filler: Phenyl-methylsilicon Column temperature: 120 ° C. (2 minutes) to 10 ° C./minute to 200 ° C. to 20 ° C./minute to 300 ° C. (5 minutes) Test solution inlet temperature: 280 ° C Detector: 300 ° C Carrier gas: helium
- Each test solution was sprayed so as to apply to the whole bark, and the herbicidal efficacy was evaluated.
- the evaluation of the herbicidal efficacy was carried out on the 14th day after spraying the above-ground weight, and the herbicidal rate based on the above-ground raw weight in the untreated area was calculated based on the following formula. The higher the herbicidal rate, the higher the pesticide efficacy.
- the amount of adhering was quantified by extracting the active ingredient from the processed bark beetle as in the insecticidal test.
- the fixed amount relative value was calculated by the following formula. It shows that the agricultural chemical has adhered to the object plant, so that the fixed amount relative value is high. Specifically, it was quantified as follows.
- Roundup and touchdown quantification Distilled water was added to the bark after treatment with the test solution to extract round-up or touch-down adhering to the bark. After extraction and solidification, the sample was dissolved in a certain amount of distilled water to prepare a sample. The sample was quantitatively analyzed under the following conditions.
- the agrochemical-containing composition of the present invention is useful as, for example, a fungicide, a plant growth agent, an acaricide, or a herbicide.
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Abstract
Description
ヒドロキシプロピルセルロースは、以下の式で表わされる。
本発明の農薬の効力を増強する方法および農薬含有組成物に用いられる農薬は、公知のものが使用でき、(B1)殺菌剤、(B2)殺虫剤、(B3)殺ダニ剤、並びに(B4)グリホサート剤及びビアラホス剤から選ばれる除草剤からなる群から選ばれる農薬が好ましく、例えば「農薬ハンドブック1998年版」(第10版、平成10年12月15日、社団法人日本植物防疫協会発行)に記載されたものが挙げられる。
有機溶剤は、前記のとおり、25℃における飽和蒸気圧50mmHg以上の有機溶剤である。有機溶剤の飽和蒸気圧とは、純物質である有機溶剤の液体と気体とが平衡状態にあるときの気体の圧力を意味する。この飽和蒸気圧は、U字管水銀圧力計による直接法により測定することができる。このような有機溶剤を使用することで、溶剤として水のみを用いる場合と比較して、組成物を植物に施した場合、組成物から溶剤が蒸発する速度が高くなる。その結果、そのような特定な有機溶剤を用いる組成物は、施された植物の表面上で粘度が迅速に上昇し、従って、植物の表面に農薬が固着しやすくなるという効果を奏する。25℃における飽和蒸気圧50mmHg以上の有機溶剤としては、例えば、エタノール(59mmHg)、トリフルオロエタノール(75mmHg)、ジクロロエタン(83mmHg)、アセトニトリル(88mmHg)、メチルエチルケトン(91mmHg)、酢酸エチル(95mmHg)、シクロヘキサン(98mmHg)、トリフルオロ酢酸(108mmHg)、メタノール(127mmHg)、ジイソプロピルエーテル(149mmHg)、テトラヒドロフラン(162mmHg)、クロロホルム(195mmHg)、アセトン(231mmHg)、ジクロロメタン(436mmHg)、ジエチルエーテル(537mmHg)等が挙げられ、中でもメタノール、エタノール、アセトン、メチルエチルケトンおよび酢酸エチルが好ましい(括弧内は25℃におけるその溶剤の飽和蒸気圧を示す)。または、この有機溶剤としては、農薬の増強を向上させる観点から、25℃における飽和蒸気圧55mmHg以上の有機溶剤が好ましく、70mmHg以上の有機溶剤がより好ましく、90mmHg以上の有機溶剤がさらに好ましく、100mmHg以上の有機溶剤がよりさらに好ましい。
本発明の農薬含有組成物は、水を含むのであるが、その含有量は、農薬効力増強の観点から、組成物全体を100重量%とした場合、95重量%以上が好ましく、97重量%以上がより好ましく、98重量%以上がさらに好ましい。また、本発明の農薬の効力を増強する方法において、農薬効力増強の観点から、前記組成物および前記農薬の合計を100重量%とする場合、水の含有量は、95重量%以上が好ましく、97重量%以上がより好ましく、98重量%以上がさらに好ましい。
本発明の農薬含有組成物は、界面活性剤、キレート剤、pH調整剤、無機塩類、増粘剤、植物成長調整剤、肥料、防腐剤等をさらに含んでもよい。また、本発明の農薬の効力を増強させる方法において、ヒドロキシプロピルセルロース、25℃における飽和蒸気圧50mmHg以上の有機溶剤、および水を含む組成物は、界面活性剤、キレート剤、pH調整剤、無機塩類、増粘剤、植物成長調整剤、肥料、防腐剤等をさらに含んでもよい。
本発明の農薬含有組成物では、ヒドロキシプロピルセルロースに、さらに界面活性剤を併用することにより、ヒドロキシプロピルセルロースの農薬の効力増強効果を維持したまま、ヒドロキシプロピルセルロースの使用量の低減化を計ることができる。前記界面活性剤としては、非イオン界面活性剤、陰イオン界面活性剤、陽イオン界面活性剤及び両性界面活性剤、或いはそれらの混合物を用いることができる。また、本発明の農薬の効力を増強させる方法において、ヒドロキシプロピルセルロース、25℃における飽和蒸気圧50mmHg以上の有機溶剤、および水を含む組成物は、さらに界面活性剤を併用することにより、ヒドロキシプロピルセルロースの農薬の効力増強効果を維持したまま、ヒドロキシプロピルセルロースの使用量の低減化を計ることができる。前記界面活性剤としては、非イオン界面活性剤、陰イオン界面活性剤、陽イオン界面活性剤及び両性界面活性剤、或いはそれらの混合物を用いることができる。
本発明の農薬含有組成物は、農薬の効力を増強させる観点から、キレート剤をさらに含んでもよい。キレート剤は、金属イオンをキレートする能力を有するものであれば特に制限されない。また、本発明の農薬の効力を増強させる方法において、ヒドロキシプロピルセルロース、25℃における飽和蒸気圧50mmHg以上の有機溶剤、および水を含む組成物は、農薬の効力を増強させる観点から、キレート剤をさらに含んでもよい。本発明に用いられるキレートの例としては、アミノポリカルボン酸系キレート剤、芳香族及び脂肪族カルボン酸系キレート剤、アミノ酸系キレート剤、エーテルポリカルボン酸系キレート剤、イミノジメチルホスホン酸(IDP)、アルキルジホスホン酸(ADPA)等のホスホン酸系キレート剤、ヒドロキシカルボン酸系キレート剤、リン酸系キレート剤、高分子電解質(オリゴマー電解質を含む)系キレート剤及びジメチルグリオキシム(DG)が挙げられる。これらのキレート剤は、それぞれフリーの酸型であっても、ナトリウム塩、カリウム塩、アンモニウム塩等の塩の形であってもよい。替わりに、それらは、加水分解可能なそれらのエステル誘導体の形であってもよい。
a) 化学式 RNY2で表される化合物、
b) 化学式 NY3で表される化合物、
c) 化学式 R-NY-CH2CH2-NY-Rで表される化合物、
d) 化学式 R-NY-CH2CH2-NY2で表される化合物、
e) 化学式 Y2N-R’-NY2で表される化合物、及び、
f) e)の化合物に類似する化合物で、Yを4以上含む化合物、例えば式:
本発明において使用し得るpH調整剤としては公知のものが使用できる。
本発明において使用し得る無機塩類としては、無機鉱物塩として例えば無機塩クレー、タルク、ベントナイト、ゼオライト、炭酸カルシウム、ケイソウ土、ホワイトカーボン等が挙げられ、無機アンモニウム塩として例えば硫酸アンモニウム、硝酸アンモニウム、リン酸アンモニウム、チオシアン酸アンモニウム、塩化アンモニウム、スルファミン酸アンモニウム等が挙げられる。
更に植物成長調節剤としては、オーキシン拮抗剤としては、マレイン酸ヒドラジド剤、ウニコナゾール剤等、オーキシン剤としては、インドール酪酸剤、1-ナフチルアセトアミド剤、4-CPA剤等、サイトカイニン剤としては、ホルクロルフェニュロン剤等、ジベレリン剤としてはジベレリン剤等、その他のわい化剤としては、ダミノジット剤等、蒸散抑制剤としては、パラフィン剤等、その他の植物成長調整剤としては、コリン剤等、生物由来の植物成長調整剤としては、クロレラ抽出物剤等、エチレン剤としては、エテホン剤等が挙げられる。
また、本発明の農薬含有組成物の製剤型は、乳剤、フロアブル製剤、液剤等いずれでもよく、製剤型は問わない。従って、その製剤型に応じた他の添加剤、例えば乳化剤、分散剤、担体等を含有するものであってもよい。本発明に係わる農薬含有組成物の使用方法は、農薬含有組成物を含有する前記各種剤型の農薬含有組成物を使用する方法により、本発明の目的とする効力増強作用が得られる。
前記のように、本発明の植物品質を向上させる方法は、本発明の農薬含有組成物を植物に施す工程を含む。本発明の植物品質を向上させる方法によれば、農薬が例えば除草剤である場合、畑地、休耕地、水田の畦、果樹園、牧草地、芝生地、森林、非農耕地用において、植物に対して除草剤の効果を向上させることができる。また、本発明の植物品質を向上させる方法によれば、農薬が例えば殺虫剤または殺菌剤である場合、畑地、休耕地、水田の畦、果樹園、牧草地、芝生地、森林、非農耕地用において、植物に対して殺虫剤または殺菌剤の効果をそれぞれ向上させることができる。
表3~表6に用いたヒドロピシプロピルセルロースおよび有機溶剤の略語の意味は以下のとおりである。また、有機溶剤についてはそれぞれの25℃における飽和蒸気圧も示した。
MeOH: メタノール 25℃飽和蒸気圧 127mmHg
アセトン 25℃飽和蒸気圧 231mmHg
酢酸エチル 25℃飽和蒸気圧 95mmHg
MEK:メチルエチルケトン 25℃飽和蒸気圧 91mmHg
トリフルオロエタノール 25℃飽和蒸気圧 75mmHg
EtOH:エタノール 25℃飽和蒸気圧 59mmHg
トリクロロエチレン 25℃飽和蒸気圧 47mmHg
1-ブタノール 25℃飽和蒸気圧 6.8mmHg。
殺菌剤抵抗性菌であるキュウリ灰色カビ病菌(Botrytis cinerea)の胞子懸濁液(107個/ml)をキュウリの幼苗(本葉3葉展開中)に1ポットあたり10mlずつ散布した。その後25℃、90%相対湿度下に静置した。
分析条件
[ガスクロマトグラフ(GC) ]
使用カラム:5%フェニルメチルシリコン化学結合型キャピラリーカラム(内径0.25mm、長さ30m、液相膜厚0.25μm)
カラム温度:50℃(1分)~20℃/分~200℃~5℃/分~280℃(5分)
注入口温度:250℃
キャリアーガス:ヘリウム
[質量分析計(MS)]
イオン化エネルギー: 70eV
測定m/z 146、205
ウンカの3齢幼虫をイネ苗で培養し、1区10頭、3連制にてディッピング法にて殺虫剤の効力検定を行った。水1リットルにスミチオン乳剤(MEPとして有効分50重量%、市販品、殺虫剤)、トレボン乳剤(エトフェンプロックスとして有効分20重量%、市販品、殺虫剤)の各々について0.3gと、表4に示す量のヒドロキシプロピルセルロース(表中では(A)セルロース誘導体)と(C)有機溶剤とを混合し、農薬含有組成物を製造した。殺虫率は下記式を用いて算出した。殺虫率の数値が高いほど、農薬効力が高いことを示す。
試験液処理後のウンカにアセトンを加え表面に付着したスミチオンを抽出した。抽出乾固後、一定量のメタノールにて溶解してサンプルとした。そのサンプルを以下の条件で定量分析した。
[ガスクロマトグラフ(GC) ]
使用カラム: 5%フェニルメチルシリコン化学結合型キャピラリーカラム(内径0.25mm、長さ30m、液相膜厚0.25μm)
カラム温度:80℃(2分)~20℃/分~180℃~5℃/分~240℃~15℃/分~280℃(5分)
注入口温度:200℃
キャリアーガス:ヘリウム
[質量分析計(MS)]
イオン化エネルギー:70eV
測定m/z 277、260
試験液処理後のウンカにアセトンを加え表面に付着したトレボンを抽出した。抽出乾固後、一定量のメタノールにて溶解してサンプルとした。そのサンプルを以下の条件で定量分析した。
検出器:紫外分光光度型検出器
操作条件
カラム充てん剤:オクタデシルシリル化シリカゲル(粒径5μm)
カラム:内径4.6mm×長さ150mm
カラム温度:40℃
検出器:波長225nm
移動相:アセトニトリル及び水の混液(アセトニトリル:水=3:1)
殺ダニ剤としては水1リットルにニッソラン水和剤(ヘキシチアゾクスとして有効分10重量%)、オサダン水和剤25(酸化フェンブタスズとして有効分25重量%)の各々について0.3gと、表5に示す量のヒドロキシプロピルセルロース(表中では(A)セルロース誘導体)と(C)有機溶剤とを混合し、農薬含有組成物を製造した。カンザワハダニメス成虫をインゲンのリーフディスクに1区30匹、3反復にてうえつけた後、24時間、25℃にて培養した。その後リーフディスク全体を試験液に5秒間浸漬させ、試験液から取り出して25℃で48時間放置後に観察し、殺ダニ率を無処理の場合を基準にして下記式を用いて算出した。殺ダニ率の数値が高いほど、農薬効力が高いことを示す。
試験液処理後のカンザワハダニにアセトニトリルを加え抽出した。抽出乾固後、一定量のメタノールにて溶解してサンプルとした。以下の条件で定量分析を行った。
検出器:紫外分光光度型検出器
操作条件
カラム充てん剤:オクタデシルシリル化シリカゲル(粒径5μm)
カラム:内径4mm×長さ150mm
カラム温度:40℃
検出器:波長235nm
移動相:アセトニトリル及び水の混液(アセトニトリル:水=7:3)
試験液処理後のカンザワハダニにアセトニトリルを加え抽出した。抽出乾固後、一定量のメタノールにて溶解してサンプルとした。以下の条件で定量分析を行った。
検出器:炎光光度型検出器(波長610nm)
操作条件
カラム:内径0.32mm×長さ30m
カラム充てん剤:フェニル-メチルシリコン
カラム温度:120℃(2分)~10℃/分~200℃~20℃/分~300℃(5分)
試験溶液注入口温度:280℃
検出器:300℃
キャリヤーガス:ヘリウム
ポットにメヒシバを発芽させた。ポット間の均一性を高めるため、発育が異常なポットは廃棄した。草丈が18cm程度に生長したポットを試験に用いた。タッチダウン液剤(グリホサートトリメシウム塩として有効分38重量%、市販品)、ラウンドアップ液剤(グリホサートイソプロピルアミン塩として有効分41重量%、市販品)それぞれを水1リットルに対してタッチダウン液剤は10g、ラウンドアップ液剤は3.7gを添加しさらに、表6に示す量のヒドロキシプロピルセルロース(表中では(A)セルロース誘導体)と(C)有機溶剤とを混合し、農薬含有組成物を製造した。各試験液はメヒシバ全体にかかるように噴霧し殺草効力を評価した。殺草効力の評価は地上部重量を散布後14日目に量り、無処理区の地上部生重量を基準とした殺草率を下記式に基づき算出した。殺草率の数値が高いほど、農薬効力が高いことを示す。
試験液処理後のメヒシバに蒸留水を加えメヒシバに付着したラウンドアップもしくはタッチダウンを抽出した。抽出乾固後、一定量の蒸留水にて溶解してサンプルとした。そのサンプルを以下の条件で定量分析した。
検出器:蛍光検出器付き
操作条件
カラム充てん剤:強塩基性陰イオン交換樹脂(粒径10μm)。
カラム:内径4.5mm×長さ250mm
カラム温度:40℃
検出器:励起波長254nm,蛍光波長315nm
移動相:アセトニトリル及び0.1mol/Lリン酸一カリウム溶液の混液(アセトニトリル:リン酸一カリウム溶液=1:3)
Claims (7)
- ヒドロキシプロピルセルロース、25℃における飽和蒸気圧50mmHg以上の有機溶剤、および水を含む組成物を用いて農薬の効力を増強させる方法であり、
前記組成物および前記農薬の合計を100重量%とする場合、前記有機溶剤の含有量が、0.02~1重量%であり、
前記ヒドロキシプロピルセルロースと前記有機溶剤との重量比(ヒドロキシプロピルセルロース/有機溶剤)が、0.1~2であることを特徴とする方法。 - 前記農薬が、除草剤である請求項1に記載の方法。
- 前記有機溶剤が、メタノール、エタノール、アセトン、メチルエチルケトンおよび酢酸エチルからなる群から選択される1以上である請求項1または2に記載の方法。
- ヒドロキシプロピルセルロース、農薬、25℃における飽和蒸気圧50mmHg以上の有機溶剤、および水を含む農薬含有組成物であり、
前記組成物全体を100重量%とする場合、前記有機溶剤の含有量が、0.02~1重量%であり、
前記ヒドロキシプロピルセルロースと前記有機溶剤との重量比(ヒドロキシプロピルセルロース/有機溶剤)が、0.1~2である農薬含有組成物。 - 前記農薬が、除草剤である請求項4に記載の農薬含有組成物。
- 前記有機溶剤が、メタノール、エタノール、アセトン、メチルエチルケトンおよび酢酸エチルからなる群から選択される1以上である請求項4または5に記載の農薬含有組成物。
- 請求項4~6のいずれかに記載の農薬含有組成物を植物に施す工程を含む植物品質を向上させる方法。
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US14/845,547 Continuation US9572341B2 (en) | 2009-03-30 | 2015-09-04 | Method for enhancing efficacy of agrichemical, and agrichemical-containing composition |
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EP (1) | EP2415347B1 (ja) |
JP (1) | JP5383281B2 (ja) |
CN (1) | CN102355818B (ja) |
AU (1) | AU2010231895B2 (ja) |
BR (1) | BRPI1013164A2 (ja) |
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DE102014114494A1 (de) | 2014-10-07 | 2016-04-07 | Heinz Kurz Gmbh Medizintechnik | Aktives Hör-Implantat mit einstellbarer Fixierung des Aktor-Endstücks im Mittelohr |
JP6726447B2 (ja) * | 2015-06-25 | 2020-07-22 | 第一工業製薬株式会社 | 水性農薬組成物 |
AU2016352879B2 (en) * | 2015-11-10 | 2019-09-26 | Nufarm Americas, Inc. | Flumioxazin compositions |
CN108135163B (zh) * | 2015-12-16 | 2021-07-27 | 花王株式会社 | 农药用效力增强剂组合物 |
WO2019094706A1 (en) * | 2017-11-09 | 2019-05-16 | Cjb Applied Technologies, Llc | Pesticidal compositions and related methods |
US11470842B2 (en) | 2017-11-09 | 2022-10-18 | Cjb Applied Technologies, Llc | Pesticidal compositions and related methods |
AU2018201595B1 (en) * | 2018-03-06 | 2019-05-16 | Ruoey Lung Enterprise Corp. | Base Seat for Bed or Chair |
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Also Published As
Publication number | Publication date |
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US20150373969A1 (en) | 2015-12-31 |
EP2415347A1 (en) | 2012-02-08 |
EP2415347B1 (en) | 2016-01-27 |
AU2010231895B2 (en) | 2014-06-05 |
JP2010235455A (ja) | 2010-10-21 |
ES2568465T3 (es) | 2016-04-29 |
AU2010231895A1 (en) | 2011-10-13 |
CN102355818B (zh) | 2014-04-23 |
US9161530B2 (en) | 2015-10-20 |
MY157155A (en) | 2016-05-13 |
EP2415347A4 (en) | 2014-02-26 |
JP5383281B2 (ja) | 2014-01-08 |
US20120015813A1 (en) | 2012-01-19 |
CN102355818A (zh) | 2012-02-15 |
BRPI1013164A2 (pt) | 2019-07-09 |
US9572341B2 (en) | 2017-02-21 |
CA2756858A1 (en) | 2010-10-07 |
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