Surface-floating pesticidal composition

Abstract

The present invention aims to provide a water-surface floating pesticide composition which is excellent in diffusibility and also excellent in granule disintegration. The water-surface floating pesticide composition comprises a pesticide active ingredient, a fibrous substance, and an acetylenic diol surfactant, the fibrous substance comprising an aggregate of microfibers formed of cellulose, the average fiber length of the microfibers being 10 to 1000 μm.

Description

Technical Field

[0001] This invention relates to a water-floating pesticide composition. Background Technology

[0002] As a pesticide granule, the method of using a water-floating pesticide composition containing a floating adjuvant and having a specific gravity of less than 1 (water-floating pesticide granules) has been established as a technology. This technology allows the pesticide active ingredient to float and diffuse on the water surface by being applied to paddy fields, etc., so that the active ingredient of the pesticide is distributed throughout the paddy field.

[0003] Water-floating pesticide compositions are sometimes applied directly to paddy fields, but sometimes they are also applied in the form of bagged pesticide formulations, encapsulated in water-soluble membranes or similar materials. When these bagged pesticide formulations (large formulations) are applied to the paddy field, the water-soluble membrane dissolves rapidly, allowing the encapsulated water-floating pesticide composition to float on the surface and diffuse throughout the entire paddy field, thus ensuring that the active pesticide ingredient is distributed throughout the entire field.

[0004] For water-floating pesticide compositions, it is required that the particles do not easily aggregate and disperse easily when the composition is applied to paddy fields, etc. (excellent dispersibility). When using the above-mentioned bag-shaped pesticide formulation, the particles are densely packed inside the bag-shaped pesticide formulation, and therefore easily aggregate when dispersed. Therefore, the bag-shaped pesticide formulation particularly requires excellent dispersibility. In addition, in order to diffuse the pesticide active ingredient in the water-floating pesticide composition throughout the paddy field, it is also required that the individual particles of the composition easily disintegrate and disperse (excellent disintegration properties).

[0005] Patent document 1 discloses a water surface floating pesticide granular composition containing pesticide active ingredients, alkyl diol derivatives represented by formula (I), condensed phosphate or its salt, floating aids and extenders.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent No. 5709343 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] Although Patent Document 1 discloses that the above-mentioned floating pesticide granular composition has excellent buoyancy and diffusion on the water surface, it makes no record of the disintegration of the particles.

[0011] As described above, it is desirable to achieve a water-floating pesticide composition with excellent dispersibility and excellent particle disintegration properties.

[0012] The purpose of this invention is to provide a water-floating pesticide composition with excellent dispersibility and particle disintegration properties.

[0013] Methods for solving problems

[0014] The inventors conducted intensive research to solve the above-mentioned problems and found that the above-mentioned problems could be solved by using specific cellulose and acetylide diol surfactants, thus completing the present invention.

[0015] The specific solution of the present invention is as follows.

[0016] [1] A water-floating pesticide composition comprising:

[0017] Pesticide active ingredients,

[0018] fibrous, and

[0019] Acetylene diol surfactants,

[0020] The fibrous material comprises an aggregate of microfibers formed from cellulose, wherein the average fiber length of the microfibers is 10 to 1000 μm.

[0021] [2] The water-floating pesticide composition as described in [1], wherein the microfibers comprise microfibers derived from wheat, beet, pulp, corn, soybean, pea, oat, bamboo, sugarcane, potato, apple, psyllium or rice.

[0022] [3] A water-floating pesticide composition as described in [1] or [2], wherein the microfibers comprise crystalline cellulose.

[0023] [4] The water-floating pesticide composition as described in any one of [1] to [3], wherein the fibrous material contains insoluble dietary fiber at a content of 70% or more.

[0024] [5] The water surface floating pesticide composition as described in any one of [1] to [4], wherein the content of the fibrous material is 1 to 15% by weight relative to the total water surface floating pesticide composition.

[0025] [6] The water-floating pesticide composition as described in any one of [1] to [5], wherein the acetylenic diol surfactant is an acetylenic diol compound represented by the following formula (1):

[0026] [Chemistry 1]

[0027]

[0028] In the above formula (1),

[0029] R 1 and R4 Each is an alkyl or allyl group having 1 to 20 carbon atoms; they may be the same or different from each other.

[0030] R 2 and R 3 Each is an alkyl group having 1 to 3 carbon atoms; they may be the same or different from each other.

[0031] m and n are both positive numbers less than or equal to 0 or 30.

[0032] [7] A water-floating pesticide composition as described in [6], wherein, in formula (1), R 1 and R 4 Each is an alkyl group having 1 to 5 carbon atoms, R 2 and R 3 Each alkyl group is independently composed of 1 to 3 carbon atoms, and the average number of moles (m+n) of ethylene oxide units added is 0 to 30 moles.

[0033] [8] A water-floating pesticide composition as described in [7], wherein, in formula (1), R 1 and R 4 It is methyl, R 2 and R 3 The isobutylene oxide unit has an average addition molar number (m+n) of 0 to 30 moles.

[0034] [9] The water surface floating pesticide composition as described in any one of [1] to [8], wherein the content of the acetylenol-based surfactant is greater than 0% by weight and less than 5% by weight relative to the whole water surface floating pesticide composition.

[0035]

[10] The water-floating pesticide composition as described in any one of [1] to [9] is encapsulated in a water-soluble membrane.

[0036]

[11] The water-floating pesticide composition as described in

[10] , wherein the water-soluble film contains polyvinyl alcohol.

[0037]

[12] The water surface floating pesticide composition as described in any one of [1] to

[11] is in granule form.

[0038]

[13] The water-floating pesticide composition as described in any one of [1] to

[12] further contains silica.

[0039]

[14] The water-floating pesticide composition as described in any one of [1] to

[13] further contains clay and bentonite.

[0040]

[15] A water-floating pesticide composition as described in any one of [1] to

[14] , wherein the active pesticide ingredient comprises at least one selected from benzobicyclon, pentoxazone, cafenstrole, fenquinotrione, pyraclonil, florpyrauxifen-benzyl, fentrazamide, pyriftalid, tefuryltrione, triafamone, propyrisulfuron, cyclopyrimorate, ipfencarbazone, imazosulfuron, and penoxsulam.

[0041]

[16] A water-floating pesticide composition as described in any one of [1] to

[15] , wherein the active pesticide ingredient comprises at least one selected from benzobicyclohexane, cyclopentadiazon, chlorpyrifos and fluroxypyr.

[0042]

[17] A water-floating pesticide composition as described in any one of [1] to

[16] , wherein the active pesticide ingredient comprises a combination of benzobicyclohexane, cyclopentadiazon and flumetsulam, or a combination of benzobicyclohexane, chlorpyrifos and flumetsulam.

[0043]

[18] The water surface floating pesticide composition as described in any one of [1] to

[17] , wherein the content of the active pesticide ingredient relative to the whole water surface floating pesticide composition is 0.1 to 80% by weight, preferably 0.1 to 50% by weight, more preferably 0.2 to 30% by weight.

[0044]

[19] A method of using a water surface floating pesticide composition, comprising the step of dispersing the water surface floating pesticide composition as described in any one of [1] to

[18] in a paddy field.

[0045]

[20] The method as described in

[19] , wherein the water surface-floating pesticide composition is dispersed by an aircraft.

[0046]

[21] The method as described in

[20] , wherein the aircraft is an unmanned aerial vehicle (UAV).

[0047] Invention Effects

[0048] The water-floating pesticide composition of the present invention has excellent dispersibility and excellent particle disintegration properties. Detailed Implementation

[0049] In this manual, when “X~Y” is used to represent a numerical range, the range includes the values ​​at both ends.

[0050] In this specification, "diffusivity" refers to the property of a water-floating pesticide composition (an aggregate of multiple particles) to diffuse outwards without agglomerating when it is directly applied to paddy fields or other similar locations, either in the form of a bagged pesticide formulation.

[0051] In this specification, "disintegration" refers to the property of individual particles to disintegrate and disperse when a water-floating pesticide composition is directly or in the form of a bagged pesticide formulation is applied to paddy fields or similar locations.

[0052] The following describes the water-floating pesticide composition of the present invention.

[0053] <Floating Pesticide Compositions>

[0054] The water-floating pesticide composition of the present invention comprises:

[0055] Pesticide active ingredients,

[0056] fibrous, and

[0057] Acetylene diol surfactants,

[0058] The fibrous material is an aggregate of microfibers formed from cellulose, and the average fiber length of the microfibers is 10 to 1000 μm.

[0059] In this invention, by combining the above-mentioned fibrous material and the above-mentioned acetylenic diol surfactant, both the diffusion and particle disintegration properties of the water-floating pesticide composition can be achieved simultaneously.

[0060] Water-floating pesticide compositions can be in granule form.

[0061] (Active ingredients in pesticides)

[0062] There are no particular limitations on the active ingredients of pesticides, but examples include compounds of various known herbicides, plant growth regulators, fungicides, insecticides, acaricides, nematicides, and other active ingredients. Pesticide active ingredients can be used alone or in combination of two or more.

[0063] Examples of herbicides (herbicidal active ingredients) include: ALS inhibitors, germination / growth inhibitors, photosynthesis inhibitors, PPO inhibitors, bleaching agents, VLCFA inhibitors, hormone action inhibitors / interferers, and ACCase inhibitors. Herbicides can be used alone or in combination of two or more.

[0064] Examples of ALS inhibitors include: amidosulfuron, azimsulfuron, bensulfuron-methyl, bispyribac, chlorimuron-ethyl, chlorsulfuron, cinosulfuron, cloransulam-methyl, cyclosulfamuron, diclosulam, and ethametsulfuron-methyl. ethyl), ethoxysulfuron, flazasulfuron, florasulam, flucarbazone, flumetsulam, flupyrsulfuron-methyl, foramsulfuron, halosulfuron-methyl, imazamethabenz-methyl, imazamox, imazapic, imazalil azapyr, imazaquin, imazethapyr, imazosulfuron, iodosulfuron-methyl, iofensulfuron, iofensulfuron-sodium, metazosulfuron, metsulfuron-methyl, nicosulfuron, orthosulfamuron, oxasulfuron, penoxsulfuron (penoxsulam), primisulfuron-methyl, propoxycarbazone, propyrisulfuron, prosulfuron, pyrazosulfuron-ethyl, pyribenzoxim, pyriftalid, pyriminobac-methyl, pyrimisulfan, pyrithiobac, rimsulfuronSulfometuron-methyl, sulfosulfuron, thiencarbazone-methyl, thifensulfuron-methyl, triafamone, triasulfuron, tribensulfuron-methyl, trifloxysulfuron, triflusulfuron-methyl, and tritosulfuron, etc.

[0065] Examples of germination / growth inhibitors include: benfluralin, bromobutide, butamifos, butralin, carbetamide, chlorpropham, chlorthal-dimethyl chlorphthalate, cumyluron, dichlobenil, dinitramine, dithiopyr, dymron, ethalfluralin, etobenzanid, methiozolin, methyldymron, oryzalin, oxaziclomefone, pendimethalin, propham, propoxycarbazone, pyributicarb, and sodium chlorate. The following are examples of herbicides: chlorate, tetflupyrolimet, thiazopyr, triaziflam, and trifluralin.

[0066] Examples of photosynthesis inhibitors include: ametryn, atrazine, bentazone, bromacil, bromoxynil, bromofenoxim, chlorbromuron, chloridazon, chlorotoluron, chloroxuron, cyanazine, desmedipham, desmetryn, dimefuron, dimethametryn, diuron, ethidimuron, fenuron, fluometuron, hexazinone, ioxynil, isoproturon, isouron, karbutilate, lenacil, and linuron. Inuron, metamitron, methabenzthiazuron, metobromuron, metoxuron, metribuzin, monolinuron, neburon, pentanochlor, phenmedipham, prometon, prometryn, propanil, propazine, pyridafol, pyridate, quinoclamine, siduron, simazine, simetryn, tebuthiuron, terbacil, terbumeton, terbuthylazine, terbutryn, and trietazine, etc.

[0067] Examples of PPO inhibitors include: acifluorfen, azafenidin, benzfendizone, bifenox, butafenacil, carfentrazone-ethyl, chlomethoxyfen, chlorphthalim, cinidon-ethyl, cyclopyranil, fluazolate, flufenpyr-ethyl, flumiclorac-pentyl, and flumiox. The following herbicides are listed: azin, fluoroglycofen-ethyl, fluthiacet-methyl, fomesafen, halosafen, lactofen, oxadiazon, oxadiargyl, oxyfluorfen, pentoxazone, profluazol, pyraclonil, pyraflufen-ethyl, saflufenacil, sulfentrazone, and thidiazimin.

[0068] Examples of bleaching agents include: aclonifen, amitrol, beflubutamid, benzobicyclon, benzofenap, bicyclopyrone, clonzone, cyclopyrimorate, diflufenican, fenquinotrione, fluridone, flurochloridone, and flurtamon. e), iptriazopyrid, isoxachlortole, isoxaflutole, mesotrione, norflurazon, picolinafen, pyrasulfotole, pyrazolate, pyrazoxyfen, sulcotrione, tefuryltrione, tembotrione, and toramezone, etc.

[0069] Examples of VLCFA inhibitors include: acetochlor, alachlor, anilofos, benfuresate, butachlor, butylate, cafenstrole, dimepiperate, dimesulfazet, dimethachlor, dimethenamid, dimethenamid-P, EPTC, esprocarb, ethofumesate, fenoxasulfone, fentrazamide, flufenacet, and hexyl-thiocarbam. Indanofan, ipfencarbazone, mefenacet, metazachlor, molinate, orbencarb, pebulate, pethoxamid, piperophos, pretilachlor, propachlor, propisochlor, prosulfocarb, pyroxasulfone, S-metolachlor, thenylchlor, thiobencarb, thiocarbazil, triallate, and vernolate, etc.

[0070] Examples of hormone inhibitors / interferers include: 2,3,6-TBA, 2,4-D, 2,4-DB, 2,4-PA-ethyl, aminocyclopyrachlor, aminopyralid, benzolin, chloramben, clonprop, clopyralid, dicamba, dichlorprop, and flupyridine. Flufenzopyr, florpyrauxifen-benzyl, fluroxypyr-1-methylheptylester, MCPA, MCPB, mecoprop, naptalam, phenothiol, picloram, quinclorac, quinmerac, and triclopyr, etc.

[0071] Examples of ACCase inhibitors include: alloxydim, butroxydim, clethodim, clodinafop-propargyl, cycloxydim, cyhalofop-butyl, diclofop-methyl, fenoxaprop-P-ethyl, fluazifop-P-butyl, haloxyfop-P-methyl, metamifop, pinoxaden, profoxydim, propaquizafop, quizalofop-P-ethyl, sethoxydim, tepraloxydim, and tralkoxydim.

[0072] Examples of plant growth regulators (active ingredients that regulate plant growth) include: oxadixyl, paclobutrazol, uniconazole, anti-dampness amine, and calcium cyclohexane.

[0073] Examples of fungicides (bactericidal active ingredients) include: polyhalogenated alkyl thiocyanates (such as captan), organophosphorus fungicides (such as IBP, EDDP, and methyl thiophanate), benzimidazole fungicides (such as benomyl, carbendazim, and methyl thiophanate), formamide fungicides (such as cymoxanil, fluopyram, thifluzamide, furazolidone, tebuconazole, pendimethalin, cyproconazole, and diclofenac), acylalanine fungicides (such as metalaxyl), and azole fungicides (such as fluopyram). Fungicides include azoles, tebuconazoles, isoprothiolane, prochloraz, etc.; methoxyacrylate fungicides (azoxystrobin, fenoxystrobin, etc.); antibiotic fungicides (effectiveycin A, isoprothiolane S, kasugamycin, polyoxin, etc.); and other fungicides (tetrachlorophthalide, thiabendazole, isoprothiolane, tricyclazole, quinquercetin, azoxystrobin, activator ester (acibenzolar-S-methyl), pyridaben, oxaconitine, phenazine oxide, TPN (chlorothalonil), iprodione, etc.).

[0074] Examples of insecticides (insecticide active ingredients) include: organophosphate insecticides (such as phosmet, fenitrothion, methyl pyrimidin, diazinon, quinalphos, isoxazophos, pyridazin, methyl chlorpyrifos, phosmet, malathion, isoprothiolane, dimethoate, phorate, chlorpyrifos, chlorpyrifos, acephate, trichlorfon, EPN, pyrazophos, etc.), and carbamate insecticides (such as carbaryl, methamidophos, isoprocarb, BPM). C. Other insecticides include: carbofuran, XMC, thiamethoxam, thiamethoxam, furazolidone, methomyl, thiamethoxam, etc.; synthetic pyrethroid insecticides (cypermethrin, ethoprofen, etc.); nereistoxin insecticides (carburetor, chlorpyrifos, chlorfenapyr, etc.); neonicotinoid insecticides (imidacloprid, acetamiprid, acetamiprid, thiamethoxam, thiamethoxam, dinotefuran, thiamethoxam, etc.); and other insecticides (thiamethoxam, tebufenozide, fipronil, acetamiprid, etc.).

[0075] Examples of acaricides (acaricidal active ingredients) include: thiamethoxam, pyridaben, azoxystrobin, pyridaben, bromoxynil, etoxazole, pyrimethanil, etc.

[0076] Examples of nematicides (nematicidal active ingredients) include thiazophos.

[0077] As the active ingredient in pesticides, the herbicidal active ingredient is preferred, more preferably benzobicycloketone and / or cyclopentoxate, and particularly preferably benzobicycloketone.

[0078] The active ingredient in the pesticide is not particularly limited, but is preferably selected from at least one of benzobicyclone, pendioxaflutole, cyclopyridoxine, fenquinoline, bispyribac-methyl, chlorpyrifos, tetrazolium-methyl, cyclopyridoxine, furazolidone, flumetsulam, promethazine, cyclopyridoxine, triazolium-methyl, imazolidone, and penflusulfuron-methyl. More preferably, it is selected from at least one of benzobicyclone, pendioxaflutole, chlorpyrifos, and flumetsulam. Most preferably, it is a combination of benzobicyclone, pendioxaflutole, and flumetsulam, or a combination of benzobicyclone, chlorpyrifos, and flumetsulam. The active ingredient may also be a combination of benzobicyclone and pendioxaflutole.

[0079] As an active ingredient in pesticides, substances with a water solubility of typically less than 50 mg / ml at 20°C can be used, preferably in the range of 0.00001 to 10 mg / ml, and particularly preferably in the range of 0.00001 to 1 mg / ml.

[0080] The active ingredient in pesticides can be in powder form.

[0081] The average particle size (D50) of the pesticide active ingredient is not particularly limited, but from the viewpoint of uniformity of the water-floating pesticide composition, it is preferably 1 to 150 μm, more preferably 2 to 50 μm, and most preferably 2 to 10 μm. The average particle size (D50) of the pesticide active ingredient can be measured under dry conditions using a laser diffraction particle size distribution measuring device.

[0082] The content of the active ingredient in this type of pesticide, relative to the total content of the water-floating pesticide composition, is typically 0.1 to 80% by weight, preferably 0.1 to 50% by weight, and more preferably 0.2 to 30% by weight. The content of the active ingredient can be set appropriately according to the characteristics of the active ingredient used.

[0083] (Fibrous)

[0084] Fiber comprises an aggregate of microfibers formed from cellulose. Fiber may also consist of an aggregate of microfibers formed from cellulose. Fiber may include fibrous materials other than the aforementioned microfibers. Fiber may be added as a disintegrant.

[0085] Aggregates of microfibrils formed from cellulose can be microfibrils formed from α-cellulose. Aggregates of microfibrils can be identified as single particles (primary particles) by microscopic observation.

[0086] Typical plant fibers (α-cellulose) are aggregates of countless microfibers (ultrafine fibers), divided into quasi-crystalline and crystalline regions. The quasi-crystalline region is an aggregate of amorphous cellulose chains and is flexible. In the crystalline region, the microfibers are bonded together in a certain direction, making them dense and rigid.

[0087] The microfibers in this embodiment may contain both quasi-crystalline regions and crystalline regions, or they may contain crystalline regions but not quasi-crystalline regions.

[0088] The fiber length of the microfiber is 10–1000 μm, preferably 25–800 μm, and more preferably 40–600 μm.

[0089] The fiber length of microfibers can be measured using general methods such as microscopy. For commercially available fibrous materials, the fiber length can be taken from the values ​​listed in the manufacturer's brochure. The average fiber length of microfibers can be calculated based on the measured fiber length. Specifically, the average fiber length can be obtained by microscopy using a digital microscope, such as the VHX-6000 (manufactured by Keyence).

[0090] The aforementioned microfibers may comprise or be formed from microfibers derived from wheat, sugar beets, pulp, corn, soybeans, peas, oats, bamboo, sugarcane, potatoes, apples, psyllium, or rice. These microfibers may be used alone or in combination of two or more. As the fibrous material containing these microfibers, commercially available products such as VITACEL (registered trademark) WF600 / 30, VITACEL (registered trademark) WF600, VITACEL (registered trademark) WF200, VITACEL (registered trademark) HF600 / 30, VITACEL (registered trademark) HF600, and VITACEL (registered trademark) HF200 (all manufactured by Rettenmaier Japan Co., Ltd.) described in the [Examples] section below can be used. These microfibers may simultaneously contain quasi-crystalline regions and crystalline regions.

[0091] The aforementioned microfibers may contain crystalline cellulose or be formed from crystalline cellulose.

[0092] Crystalline cellulose is obtained by partially depolymerizing α-cellulose from fibrous plants such as pulp with an inorganic acid, removing the crystalline regions of the cellulose, and then refining it. Crystalline cellulose is obtained by hydrolyzing (depolymerizing) the raw fiber and separating and removing the amorphous portion; it is a crystalline fiber containing only fiber bundles. The microfibers contained in crystalline cellulose may contain crystalline regions but not quasi-crystalline regions. Commercially available products such as ARBOCEL (registered trademark) B800 (manufactured by Rettenmaier Japan Co., Ltd.) described in the [Examples] section below can be used as cellulose containing this crystalline cellulose.

[0093] The aforementioned microfibers may simultaneously comprise both the microfibers derived from wheat, sugar beets, pulp, corn, soybeans, peas, oats, bamboo, sugarcane, potatoes, apples, psyllium, or rice and the aforementioned crystalline cellulose, or may consist solely of the two.

[0094] There is no particular limitation on the fiber content; it can contain insoluble dietary fiber at a rate of 70% or more. When the insoluble dietary fiber content is low, the proportion of water-soluble dietary fiber such as starch, polysaccharides, and pectin increases relatively, which may reduce the desired effect. The insoluble dietary fiber content in the fiber can be determined by generally known methods such as the Prosky method. A more preferred insoluble dietary fiber content is 75% or more, further preferred is 85% or more, and most preferred is 95% or more. The aforementioned commercially available VITACEL (registered trademark) and ARBOCEL (registered trademark) products all contain insoluble dietary fiber at a rate of 70% or more.

[0095] The fiber content is not particularly limited relative to the overall water-floating pesticide composition, but is preferably 1 to 15% by weight, more preferably 5 to 15% by weight, and most preferably 5 to 10% by weight. By keeping the fiber content within the above range, the time required for particle disintegration is shortened.

[0096] It should be noted that, in addition to the aforementioned fibrous materials, other insoluble fibers may also be included. Examples of other insoluble fibers include agar, carrageenan, cellulose, and other common substances. Such other insoluble fibers may be appropriately incorporated in amounts that do not impair the effects of the present invention.

[0097] (Alkyne diol surfactants)

[0098] Alkyne diol surfactants can be added as extenders.

[0099] Examples of alkynyldiol surfactants include, for example, alkynyldiol compounds represented by the following formula (1), namely, at least one of alkynyldiol and alkynyldiol derivatives.

[0100] [Chemistry 2]

[0101]

[0102] In equation (1), R 1 and R 4 Each is an alkyl or allyl group having 1 to 20 carbon atoms; they may be the same or different. Additionally, R... 2 and R 3 Each is an alkyl group having 1 to 3 carbon atoms, and they may be the same or different. Furthermore, m and n are each positive numbers of 0 or less than 30.

[0103] In equation (1) above, as described above, R 1 and R 4 Each is an alkyl or allyl group having 1 to 20 carbon atoms; additionally, R 2 and R 3Each is an alkyl group having 1 to 3 carbon atoms. Furthermore, R 1 With R 4 R 2 With R 3 They can be the same as or different from each other.

[0104] R 1 and R 4 Each of the alkyl groups is preferably an alkyl group having 1 to 15 carbon atoms, more preferably an alkyl group having 1 to 10 carbon atoms, and most preferably an alkyl group having 1 to 5 carbon atoms. 1 and R 4 Each component is preferably butyl, and more preferably isobutyl.

[0105] R 2 and R 3 Each can be a methyl group independently.

[0106] Furthermore, the average number of ethylene oxide units added (m+n) in the acetylacetonate compounds represented by the above formula (1) is preferably 0 to 30 moles, more preferably 0 to 10 moles, and most preferably 0 to 4 moles.

[0107] In the above formula (1), R can be 1 and R 4 Each is an alkyl group having 1 to 5 carbon atoms, R 2 and R 3 Each is an alkyl group with 1 to 3 carbon atoms, and the average number of moles (m+n) of ethylene oxide units added is 0 to 30 moles. In the above formula (1), R can be 1 and R 4 It is methyl, R 2 and R 3 It is isobutyl, and the average number of moles (m+n) of ethylene oxide units added is 0 to 30 moles.

[0108] Among the alkynyldiol compounds represented by formula (1) above, alkynyldiols with an average addition molar number of ethylene oxide units of 0 can be specifically exemplified as: 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol, 5,8-dimethyl-6-dodecyn-5,8-diol, 2,4,7,9-tetramethyl-5-decyn-4,7-diol, 4,7-dimethyl-5-decyn-4,7-diol, 2,3,6,7-tetramethyl-4-octyne-3,6-diol, 3,6-dimethyl-4-octyne-3,6-diol, 2,5-dimethyl-3-hexyn-2,5-diol, etc. These alkynyldiol compounds can be used alone or in combination of two or more.

[0109] Furthermore, among the alkynyl diol compounds represented by the above formula (1), examples of alkynyl diol derivatives, i.e., ethoxylated derivatives of alkynyl diol compounds, include, for example, the ethoxylated derivative of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (average total molar addition of ethylene oxide: m+n, in the above formula (1), R...). 1 and R 4 It is isobutyl, R 2 and R 3 (Methyl). Additionally, examples of ethoxylated derivatives of alkynyldiol compounds include: ethoxylated derivatives of 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol (average total molar addition of ethylene oxide: 6), ethoxylated derivatives of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (average total molar addition of ethylene oxide: 10), ethoxylated derivatives of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (average total molar addition of ethylene oxide: 4), and ethoxylated derivatives of 3,6-dimethyl-4-octyne-3,6-diol (average total molar addition of ethylene oxide: 4). Particularly preferred is the ethoxylated derivative of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (average total molar addition of ethylene oxide: 1.3, where R in formula (1) above... 1 and R 4 It is isobutyl, R 2 and R 3 For methyl, m+n=1.3), ethoxylated derivatives of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (average total molar addition of ethylene oxide: 3.5, in formula (1), R 1 and R 4 It is isobutyl, R 2 and R 3 (Methyl group, m+n=3.5). These alkynyldiol compounds can be used alone or in combination of two or more.

[0110] The content of the acetylenol-based surfactant is not particularly limited relative to the overall water-floating pesticide composition, but is preferably greater than 0% by weight and less than 5% by weight, more preferably 0.1% to 3% by weight, and most preferably 0.5% to 3% by weight. When the content of the acetylenol-based surfactant is within the above-mentioned range, the particles will not aggregate and can diffuse throughout the paddy field. The content of the acetylenol-based surfactant can also be 1% to 5% by weight or 2% to 5% by weight.

[0111] (Other ingredients)

[0112] Water-floating pesticide compositions may also contain powdered insoluble salts. These insoluble salts may be selected from dicalcium phosphate, tricalcium phosphate, calcium carbonate, silicon dioxide, and calcium dihydrogen pyrophosphate. These insoluble salts may be used alone or in combination of two or more.

[0113] The water-floating pesticide composition may also contain a dispersant. The dispersant may be any dispersant other than the acetylenic diol surfactants mentioned above.

[0114] Examples of dispersants include: nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and other surfactants.

[0115] Examples of nonionic surfactants include: polyethylene glycol surfactants, polyol surfactants, and alkyl glycosides.

[0116] Examples of anionic surfactants include carboxylic acid surfactants, sulfate surfactants, sulfonic acid surfactants, and phosphate surfactants. These anionic surfactants can also be in the form of salts, such as alkali metals (lithium, sodium, and potassium, etc.), alkaline earth metals (calcium and magnesium, etc.), ammonium, and various amines (e.g., alkylamines, cycloalkylamines, and alkanolamines, etc.). Examples of carboxylic acid surfactants include polycarboxylic acid surfactants. Examples of sulfonic acid surfactants include sodium lignin sulfonate and alkylnaphthalene sulfonate formaldehyde condensate metal salts. Polycarboxylic acid surfactants and sodium lignin sulfonate are particularly preferred when used in combination.

[0117] Examples of cationic surfactants include alkylamines, alkyl quaternary ammonium salts, ethylene oxide adducts of alkylamines, and ethylene oxide adducts of alkyl quaternary ammonium salts. Examples of amphoteric surfactants include betaine-type surfactants and amino acid-type surfactants. Examples of other surfactants include silicone-based surfactants and fluorinated surfactants.

[0118] These dispersants can be used alone or in combination of two or more.

[0119] The content of the dispersant is not particularly limited relative to the overall composition of the water-floating pesticide, but is preferably 0 to 10% by weight, more preferably 0.5 to 8% by weight, and most preferably 2 to 6% by weight. By keeping the content of the dispersant within the above-mentioned range, the particles can be dispersed as fine particles when they disintegrate.

[0120] Water-floating pesticide compositions may also contain wetting agents.

[0121] The wetting agent is not particularly limited, but examples include: dioctyl sulfosuccinate metal salt, alkylbenzene sulfonic acid metal salt, alkylnaphthalene sulfonic acid metal salt, etc. Among them, dioctyl sulfosuccinate metal salt is preferred.

[0122] The content of the wetting agent is not particularly limited relative to the overall water-floating pesticide composition, but is preferably 0-5% by weight, more preferably 0.1-4% by weight, and most preferably 0.2-3% by weight. By keeping the content of the wetting agent within the above range, the active ingredient (pesticide active ingredient) contained in the water-floating pesticide composition is wetted, and the active ingredient can be quickly suspended in the water after the particles disintegrate.

[0123] Water-floating pesticide compositions may also contain binders.

[0124] Examples of adhesives include dextrin, water-soluble starch, carboxymethyl cellulose salts (sodium salts, etc.), polyvinyl alcohol or its derivatives, sodium alginate, xanthan gum, gum arabic, and other water-soluble polymers. Dextrin is preferred. These adhesives can be used alone or in combination of two or more.

[0125] Aquatic floating pesticide compositions may also be free of carboxymethyl cellulose or its salts. In this specification, "free of" a specific ingredient means that the ingredient is not intentionally added, and may cover embodiments where the ingredient is present as an impurity.

[0126] The content of the binder is not particularly limited relative to the overall water-floating pesticide composition, but is preferably 0-5% by weight, more preferably 1-5% by weight, and most preferably 2-5% by weight. By keeping the binder content within the above range, the formability of the granules can be improved, and pulverization during drying or product transportation can be suppressed.

[0127] Water-floating pesticide compositions may also contain planar carriers.

[0128] As buoyant carriers, various inorganic and organic buoyant carriers with a specific gravity of less than 1 can be used. Examples of inorganic buoyant carriers include: insulated glass, foamed white sand, foamed pumice, and foamed perlite. Examples of organic buoyant carriers include: foamed synthetic resins (including micro-hollow plastic bodies), synthetic resin powders such as polyethylene powder and polypropylene powder, paraffin wax, waxy substances derived from animals and plants, cork, and wood flour. Among these, micro-hollow plastic bodies, foamed white sand, and insulated glass are preferred, with micro-hollow plastic bodies being particularly preferred. Examples of materials for the outer shell of micro-hollow plastic bodies include: vinylidene chloride-acrylonitrile resin, acrylonitrile resin, and acrylic resins. These buoyant carriers can be used alone or in combination of two or more.

[0129] The content of the planar carrier is not particularly limited relative to the overall water-floating pesticide composition, but is preferably 0-30% by weight, more preferably 0-20% by weight, and most preferably 10-20% by weight. By keeping the content of the planar carrier within the above-mentioned range, the particles can float stably on the water surface without settling.

[0130] The water-floating pesticide composition may also contain a expander. The expander in the overall water-floating pesticide composition may be the remainder other than other components (the above-mentioned pesticide active ingredients, cellulose, acetylsyl glycol surfactants, dispersants, wetting agents, binders, floating carriers, etc.).

[0131] Examples of additives include: organic acids (citric acid, succinic acid, maleic acid, etc.) or their salts, urea, water-soluble carriers such as sugars [lactose, glucose, sucrose, etc.], plant powders (e.g., soybean flour, tobacco flour, wheat flour, wood flour, etc.), mineral or inorganic powders (e.g., kaolin, bentonite, acid clay, clay and other clays; talc powder, pyrophyllite powder and other talcs; diatomaceous earth, mica powder and other silicas; precipitated silica, alumina, sulfur powder, activated carbon, potassium chloride, ammonium sulfate, sodium bicarbonate, sodium sulfate, calcium carbonate, magnesium carbonate, etc.). Preferred additives include precipitated silica, clay, bentonite, and calcium carbonate; particularly preferred additives include precipitated silica, clay, and / or bentonite; and most preferred additives are combinations of precipitated silica, clay, and bentonite. Additives can also be combinations of clay and bentonite. These additives can be used alone or in combination of two or more. Alternatively, the aforementioned planktonic carriers can also be used as extenders.

[0132] When using silica as a extender, the content of silica relative to the overall water-floating pesticide composition is not particularly limited, but is preferably 1 to 15% by weight, more preferably 2 to 10% by weight, and most preferably 3 to 5% by weight. By keeping the silica content within the above range, the particle disintegration time can be appropriately adjusted.

[0133] (Manufacturing method, usage form, etc.)

[0134] The water-floating pesticide composition of this embodiment can be manufactured according to conventional manufacturing methods. For example, the following method can be used: mixing pesticide active ingredients, cellulose, acetylsalicylic acid diol surfactants and any other ingredients, adding an appropriate amount of water to mix and knead, shaping by extrusion granulation or other methods, and then drying, granulating and sieving.

[0135] As described above, water-floating pesticide compositions can also be encapsulated within a water-soluble membrane. The resulting bagged pesticide formulation comprises a water-floating pesticide composition and a water-soluble membrane encapsulating the composition. As mentioned above, within the bagged pesticide formulation, the particles of the water-floating pesticide composition are densely packed together, making them prone to aggregation during dispersion. Therefore, excellent dispersibility is particularly important for the morphology of bagged pesticide formulations.

[0136] The aforementioned water-soluble membrane can be any membrane that dissolves or disperses in water. Examples include membranes or sheets formed from polyvinyl alcohol or its derivatives, pullulan, carboxymethyl cellulose salts (sodium salts, etc.), water-soluble cellulose derivatives, polyethylene oxide or its derivatives. Among these, membranes or sheets formed from polyvinyl alcohol or its derivatives are preferred.

[0137] (How to use)

[0138] The water-floating pesticide composition of this embodiment, like conventional pesticide formulations, can be dispersed by conventional methods such as hand-spreading or mechanical dispersal, or applied through water inlets. Alternatively, the water-floating pesticide composition of this embodiment can be encapsulated in a water-soluble film to form a bag-shaped pesticide formulation, which can be applied by being placed into the paddy field from the paddy field ridges or other locations.

[0139] The method of using the water surface floating pesticide composition of this embodiment includes the step of dispersing the above-described water surface floating pesticide composition in a paddy field.

[0140] The aforementioned dispersal can be carried out by aircraft. There are no particular limitations on the type of aircraft; examples include: small, light fixed-wing aircraft, manned helicopters, unmanned helicopters, tiltrotor aircraft combining fixed-wing and rotary-wing capabilities, and multi-rotor agricultural aircraft powered by motors and batteries (so-called drones). Among these aircraft, small unmanned helicopters and drones specifically designed for pesticide dispersal are preferred.

[0141] The present invention will be specifically described below through embodiments, but the present invention is not limited to the contents described in the embodiments.

[0142] Example

[0143] (raw material)

[0144] The raw materials used to prepare the water-floating pesticide composition are shown below.

[0145] <Active ingredients in pesticides>

[0146] Original A: Benzobicycloketone (99.0% purity, manufactured by SDS Biotech Co., Ltd.)

[0147] Original substance B: Cyclopentazoline (99.5% purity, manufactured by Research Pharmaceutical Co., Ltd.)

[0148] Original C: cyclopyr (99.3% purity, manufactured by SDS Biotech Co., Ltd.)

[0149] Original D: Fenquinone (purity 99.5%)

[0150] Original substance E: Bisoxane (purity 96.5%)

[0151] Original substance F: chloropyridine ester (purity 94.8%)

[0152] Original substance G: Tetrazolam (purity 70.1%)

[0153] Original substance H: Cyclopyralid (purity 99.0%)

[0154] Original component I: Furazolidone (purity 99.1%)

[0155] Original J: Fluoxetine (purity 98.2%)

[0156] Original K: Promethazine sulfadiazine (purity 98.4%)

[0157] Original substance L: Cyclopyralid (purity 98.4%)

[0158] Original substance M: Triazole oxychloride (purity 99.5%)

[0159] Original N: Imidazolium (purity 99.3%)

[0160] Original O: penoxsulam (purity 98.0%)

[0161] The aforementioned prototypes D to O can be synthesized based on existing literature or purchased commercially available products.

[0162] <Disintegration aids>

[0163] Fiber (1): VITACEL (registered trademark) WF600 / 30 (wheat fiber, average fiber length: 30μm, dietary fiber content: approximately 97%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0164] Fiber (2): VITACEL (registered trademark) WF600 (wheat fiber, average fiber length: 80μm, dietary fiber content: approximately 97%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0165] Fiber (3): VITACEL (registered trademark) WF200 (wheat fiber, average fiber length: 250μm, dietary fiber content: approximately 97%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0166] Fiber (4): VITACEL (registered trademark) HF600 / 30 (oat fiber, average fiber length: 30μm, dietary fiber content: approximately 96%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0167] Fiber (5): VITACEL (registered trademark) HF600 (oat fiber, average fiber length: 80μm, dietary fiber content: approximately 96%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0168] Fiber (6): VITACEL (registered trademark) HF200 (oat fiber, average fiber length: 250μm, dietary fiber content: approximately 96%) (manufactured by Rettenmaier Japan Co., Ltd.)

[0169] Fiber (7): ARBOCEL (registered trademark) B800 (crystalline cellulose, shape: fiber, average fiber length: 130μm) (manufactured by Rettenmaier Japan Co., Ltd.)

[0170] Sodium carboxymethyl cellulose: Cellogen (registered trademark) 6A (degree of etherification: 0.70-0.80) (manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.)

[0171] <Expanding Agent>

[0172] Alkyne diol surfactant (1): Surfynol (registered trademark) 440 (in the above formula (1), R 1 and R 4 It is isobutyl, R 2 and R 3 Methyl group, m+n=3.5 (manufactured by Evonik).

[0173] Alkyne diol surfactant (2): Surfynol (registered trademark) 104PG50 (in the above formula (1), R 1 and R 4 It is isobutyl, R 2 and R 3 Methyl group, m+n=0. The product contains 50% by weight propylene glycol (manufactured by Evonik).

[0174] Alkyne diol surfactant (3): Olfine (registered trademark) E1004 (in formula (1) above, R 1 and R 4 It is isobutyl, R 2 and R 3 (Methyl group, m+n=4) (Made by Nissin Chemical Industry Co., Ltd.)

[0175] Alkyne diol surfactant (4): Surfynol (registered trademark) 465 (in formula (1) above, R 1 and R 4 It is isobutyl, R 2 and R 3Methyl group, m+n=10 (manufactured by Evonik).

[0176] Alkyne diol surfactant (5): Surfynol (registered trademark) 485 (in formula (1) above, R 1 and R 4 It is isobutyl, R 2 and R 3 Methyl group, m+n=30 (manufactured by Evonik).

[0177] Polyoxyethylene (POE) alkylene glycol: Newkalgen TG-310 (manufactured by Takemoto Oils and Fats Co., Ltd.)

[0178] <Dispersant>

[0179] Sodium lignosulfonate: Newkalgen WG-4 (manufactured by Takemoto Oils Co., Ltd.)

[0180] Polycarboxylate surfactant: TOXANON GR-31A (moisture content: 57%) (manufactured by Sanyo Chemical Industry Co., Ltd.)

[0181] <Wetting agent>

[0182] Dioctylsulfosuccinic acid metal salt: Newkalgen EP-70G (moisture content: approx. 15%) (manufactured by Takemoto Oils & Fats Co., Ltd.)

[0183] <Adhesive>

[0184] Dextrin: Pinedex #1 (manufactured by Matsutani Chemical Industry Co., Ltd.)

[0185] <Planetary carriers>

[0186] Acrylonitrile hollow polymer: Matsumoto Microsphere (registered trademark) MFL-81GCA (manufactured by Matsumoto Oils & Fats Co., Ltd.)

[0187] <Increaser>

[0188] Bentonite: KUNIGEL (registered trademark) V1 (manufactured by Kunimine Industries, Ltd.)

[0189] Clay: NK-300 (manufactured by Showa KDE Co., Ltd.)

[0190] Silica: CARPLEX (registered trademark) #80 (manufactured by Evonik Japan)

[0191] [Examples 1-28 and Comparative Examples 1-18]

[0192] (Preparation of water-floating pesticide compositions)

[0193] The raw materials were mixed according to the proportions shown in Tables 1-5 below, and the mixture was further kneaded with the specified amount of water. Then, the mixture was granulated using an extrusion granulator (trade name "Basket Granulator BR-150", manufactured by Dalton) equipped with a 1.5 mm sieve, and dried at 65°C for 1 hour. The dried product was then passed through standard sieves of 850 μm and 1700 μm to remove fine powder and lumps, yielding the water-floating pesticide compositions (granules, approximately 3 mg per granule) of Examples 1-28 and Comparative Examples 1-18.

[0194] The values ​​in Tables 1-5 represent parts by weight, and the contents of each component are as follows.

[0195] • The numerical values ​​of the original components A to O represent the weight parts of the original components themselves, calculated after taking purity into account.

[0196] The values ​​for polycarboxylate surfactants and dioctyl sulfosuccinate metal salts are parts by weight of the total (solids and moisture combined), while the values ​​for other components represent parts by weight of solids. For polycarboxylate surfactants and dioctyl sulfosuccinate metal salts, the parts by weight of solids can be calculated based on the total parts by weight and the moisture content mentioned above.

[0197] The total value represents the total weight of the solid components of each ingredient.

[0198] (Evaluation of water surface floating pesticide compositions)

[0199] The following evaluations were conducted on the dispersibility and particle disintegration properties of the water-floating pesticide compositions of Examples 1-28 and Comparative Examples 1-18. The results are shown in Tables 1-5.

[0200] <Diffusion>

[0201] Test methods

[0202] A container (70cm long × 115cm wide × 20cm high) was filled with water at 20°C to a depth of 5cm. A hollow cylinder (6cm in diameter (inner diameter), 15cm high, made of polypropylene) was erected vertically in the center of the container and allowed to stand. 10g of each water-floating pesticide composition was gently dropped into the cylinder. After 30 seconds, the cylinder was gently lifted to the surface and removed. Inside the cylinder, multiple particles of the water-floating pesticide composition densely clustered together to form an agglomerate. After removing the cylinder, over time, the individual particles separated from the agglomerate and diffused on the water surface, and the size of the agglomerate gradually decreased. The time it took for the cylinder to be completely lifted off the water surface during removal was taken as the start time of the measurement. The measurement was continued until the agglomerate of the water-floating pesticide composition (the initial agglomerate formed in the cylinder) became less than 2cm. The size of the agglomerate was observed visually.

[0203] In addition, the measured measurement time is evaluated according to the following standards: good (○): less than 90 seconds, poor (△): more than 90 seconds but less than 180 seconds, and very poor (×): more than 180 seconds.

[0204] In the above evaluation of diffusivity, the shorter the measurement time, the easier it is for the particles to diffuse without agglomeration when bagged pesticide formulations (floating pesticide compositions encapsulated in a water-soluble film) are put into paddy fields, etc.

[0205] <Particle disintegration>

[0206] Test methods

[0207] Add 5L of water (temperature adjusted to 20°C) to a container (42cm long × 31.5cm wide × 11cm high) and let it stand. Then, add 1g of each water-floating pesticide composition to the center of the container. The added water-floating pesticide composition immediately disperses into individual particles, which then disintegrate, with the particle size gradually decreasing. The time of adding the water-floating pesticide composition is taken as the start time of the measurement, and the time required until 90% of the particles in the added water-floating pesticide composition (a large number of particles) disintegrate and disperse is measured. The disintegration state of the particles is observed visually.

[0208] In the above evaluation of particle disintegration, a shorter measurement time indicates that each particle is more easily disintegrated. A measurement time of less than 15 minutes can be considered to indicate good particle disintegration.

[0209] [Table 1]

[0210]

[0211] [Table 2]

[0212]

[0213] [Table 3]

[0214]

[0215] *1: Swelling particle residue

[0216] [Table 4]

[0217]

[0218] [Table 5]

[0219]

[0220] *1: Swelling particle residue

[0221] Examples 1-28 relate to water-floating pesticide compositions containing pesticide active ingredients, cellulose (an aggregate of microfibers formed from cellulose with an average fiber length of 10-1000 μm), and acetylenol-based surfactants.

[0222] On the other hand, Comparative Examples 1 and 13 relate to water-floating pesticide compositions containing sodium carboxymethyl cellulose instead of the aforementioned cellulose. Comparative Examples 2 and 14 relate to water-floating pesticide compositions not containing the aforementioned cellulose. Comparative Examples 3-9 and 15 relate to water-floating pesticide compositions containing POE alkyldiol instead of the aforementioned alkynyldiol-based surfactants. Comparative Examples 10 and 16 relate to water-floating pesticide compositions containing sodium carboxymethyl cellulose instead of the aforementioned cellulose and POE alkyldiol instead of the aforementioned alkynyldiol-based surfactants. Comparative Examples 11 and 17 relate to water-floating pesticide compositions not containing the aforementioned cellulose and POE alkyldiol instead of the aforementioned alkynyldiol-based surfactants. Comparative Examples 12 and 18 relate to water-floating pesticide compositions not containing either the aforementioned cellulose or the aforementioned alkynyldiol-based surfactants.

[0223] As shown in Tables 1 and 2, the water-floating pesticide compositions of Examples 1-14 exhibited short and good dispersibility evaluation times, indicating easy dispersibility. Furthermore, the water-floating pesticide compositions of Examples 1-14 showed short particle disintegration evaluation times, indicating that each particle easily disintegrated.

[0224] The results of Examples 1 to 7 show that even when the type of fiber is changed, the diffusivity and particle disintegration properties remain good and unchanged.

[0225] Furthermore, the results of Examples 6 and 8-11 show that regardless of which of the acetylenic diol surfactants (1) to (5) is used, both diffusion and particle disintegration properties are good. The order of better diffusion and particle disintegration properties is: acetylenic diol surfactant (1) > acetylenic diol surfactant (2) > acetylenic diol surfactant (3) > acetylenic diol surfactant (4) > acetylenic diol surfactant (5).

[0226] In addition, the results of Examples 6 and 12-14 show that even with changes in the content of the acetylenic diol surfactant, the dispersibility and particle disintegration properties remain good. Specifically, it was observed that increasing the content of the acetylenic diol surfactant tended to improve both dispersibility and particle disintegration properties.

[0227] On the other hand, as shown in Table 3, although the surface-floating pesticide compositions of Comparative Examples 2 and 5-8 had short and good dispersibility evaluation times, they had long evaluation times in the particle disintegration evaluation, indicating that the individual particles were not easily disintegrated. Furthermore, it was found that the surface-floating pesticide compositions of Comparative Examples 1, 3, 4, 9, 11, and 12 had long evaluation times in the dispersibility evaluation, indicating that they were not easily dispersed, and also had long evaluation times in the particle disintegration evaluation, indicating that the individual particles were not easily disintegrated. Moreover, it was found that the surface-floating pesticide composition of Comparative Example 10 had short evaluation times in the particle disintegration evaluation, indicating that the individual particles were easily disintegrated, but had long evaluation times in the dispersibility evaluation, indicating that it was not easily dispersed.

[0228] As shown in Table 4, the water-floating pesticide compositions of Examples 15-28 exhibited short and good dispersibility evaluation times, indicating easy dispersibility. Furthermore, the water-floating pesticide compositions of Examples 15-28 showed short particle disintegration evaluation times, indicating that each particle easily disintegrated.

[0229] The results of Examples 15-28 show that even when the type of active ingredient in the pesticide is changed, the diffusion and particle disintegration properties remain good and unchanged.

[0230] Furthermore, a comparison of Examples 1-14 (especially Example 6) in Tables 1 and 2 with Example 15 in Table 4 shows that even when the amount of the floatable carrier added and the type and amount of the extender are changed, the diffusivity and particle disintegration properties remain good and unchanged.

[0231] On the other hand, as shown in Table 5, although the surface-floating pesticide compositions of Comparative Examples 13 and 16 had short test times in the particle disintegration evaluation and the individual particles easily disintegrated, their test times in the dispersibility evaluation were extremely long, exceeding 180 seconds, indicating very poor dispersibility. Furthermore, it can be seen that although the surface-floating pesticide composition of Comparative Example 14 had short and good test times in the dispersibility evaluation, its test times in the particle disintegration evaluation were long, indicating that the individual particles did not easily disintegrate. Moreover, it can be seen that the surface-floating pesticide compositions of Comparative Examples 15 and 17 had test times exceeding 90 seconds but less than 180 seconds in the dispersibility evaluation and did not easily disintegrate, and their test times in the particle disintegration evaluation were also long, indicating that the individual particles did not easily disintegrate. In addition, it can be seen that the surface-floating pesticide composition of Comparative Example 18 had an extremely long test time in the dispersibility evaluation, exceeding 180 seconds, indicating very poor dispersibility, and its test time in the particle disintegration evaluation was also long, indicating that the individual particles did not easily disintegrate.

[0232] As can be seen from the above, the water-floating pesticide composition of the present invention has excellent diffusion and particle disintegration properties.

Claims

1. A water-floating pesticide composition comprising: Pesticide active ingredients, fibrous, and Acetylene diol surfactants, in, The fibrous material comprises an aggregate of microfibers formed from cellulose, the average fiber length of which is 10 to 1000 μm.

2. The water-floating pesticide composition according to claim 1, wherein, The microfibers comprise microfibers derived from wheat, beets, pulp, corn, soybeans, peas, oats, bamboo, sugarcane, potatoes, apples, psyllium, or rice.

3. The water-floating pesticide composition according to claim 1 or 2, wherein, The microfibers contain crystalline cellulose.

4. The water-floating pesticide composition according to any one of claims 1 to 3, wherein, The fiber content is more than 70% insoluble dietary fiber.

5. The water-floating pesticide composition according to any one of claims 1 to 4, wherein, The fiber content in the overall water-floating pesticide composition is 1-15% by weight.

6. The water-floating pesticide composition according to any one of claims 1 to 5, wherein, The acetylenic diol surfactant is an acetylenic diol compound represented by the following formula (1): [Chemistry 1] In the above formula (1), R 1 and R 4 Each is an alkyl or allyl group having 1 to 20 carbon atoms, and they may be the same or different from each other. R 2 and R 3 Each is an alkyl group having 1 to 3 carbon atoms, and they may be the same or different from each other. m and n are both positive numbers less than 0 or 30.

7. The water-floating pesticide composition according to claim 6, wherein, In the above equation (1), R 1 and R 4 Each is an alkyl group having 1 to 5 carbon atoms, R 2 and R 3 Each alkyl group is independently composed of 1 to 3 carbon atoms, and the average number of moles (m+n) of ethylene oxide units added is 0 to 30 moles.

8. The water-floating pesticide composition according to claim 7, wherein, In the above equation (1), R 1 and R 4 It is methyl, R 2 and R 3 The isobutylene oxide unit has an average addition molar number (m+n) of 0 to 30 moles.

9. The water-floating pesticide composition according to any one of claims 1 to 8, wherein, The content of the acetylenol-based surfactant in the overall water-floating pesticide composition is greater than 0% by weight and less than 5% by weight.

10. The water-floating pesticide composition according to any one of claims 1 to 9, wherein it is encapsulated in a water-soluble membrane.

11. The water-floating pesticide composition according to claim 10, wherein, The water-soluble film contains polyvinyl alcohol.

12. The water-floating pesticide composition according to any one of claims 1 to 11, wherein it is in granule form.

13. The water-floating pesticide composition according to any one of claims 1 to 12, further comprising silica.

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