WO2019039588A1 - 農薬用展着剤及び農薬散布液 - Google Patents
農薬用展着剤及び農薬散布液 Download PDFInfo
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- WO2019039588A1 WO2019039588A1 PCT/JP2018/031342 JP2018031342W WO2019039588A1 WO 2019039588 A1 WO2019039588 A1 WO 2019039588A1 JP 2018031342 W JP2018031342 W JP 2018031342W WO 2019039588 A1 WO2019039588 A1 WO 2019039588A1
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Classifications
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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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F16/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F16/04—Acyclic compounds
- C08F16/06—Polyvinyl alcohol ; Vinyl alcohol
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F216/04—Acyclic compounds
- C08F216/06—Polyvinyl alcohol ; Vinyl alcohol
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/10—Copolymer characterised by the proportions of the comonomers expressed as molar percentages
Definitions
- the present invention contains a specific ethylene-modified vinyl alcohol polymer, particularly a spreader for agrochemicals which is excellent in spreadability on plant foliage, and a spreader for the agrochemical and is storage stable (especially viscosity Stability) is excellent.
- a spray liquid obtained by diluting a pesticide with water is generally used.
- a spray solution obtained by diluting a pesticide with water is generally used.
- the agrochemical active ingredients contained are washed away by rain or the like, or exfoliated by wind and dropped off, and the sustainability of the effect is often impaired.
- an agrochemical spray liquid containing a spreading agent is used.
- a spreading agent polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether having a property to lower the surface tension of the spray liquid, to improve the adhesion or spreadability to insects and crops which are difficult to wet, and to enhance the insect repellent effect.
- Polyoxyethylene fatty acid esters, lignin sulfonates, naphthyl methane sulfonates and the like are widely used.
- these general-purpose spreading agents have the property of being very familiar with water, it is not possible to suppress runoff due to rainfall or the like.
- examples of spreading agents that show the fixing effect include polyoxyethylene resin acid ester, paraffin, polyvinyl acetate and the like, but the effect is not exhibited unless the concentration used is high, and the dried film does not dissolve in water, so plants There is a problem such as remaining on the surface indefinitely.
- Patent Documents 1 and 2 spreading compositions for agricultural chemicals containing polyvinyl alcohol and liquid spray solutions for agriculture have been proposed.
- the polyvinyl alcohols of Patent Documents 1 and 2 have a low degree of saponification and are easily dissolved in water, and therefore, there is a problem that the pesticides are easily run away by rainfall or the like.
- Patent Document 3 proposes that a specific polyvinyl alcohol-based resin be crosslinked to prevent runoff of pesticides due to rainfall or the like.
- the overflow of the agrochemical is prevented by crosslinking the polyvinyl alcohol-based resin
- sex was bad.
- the present invention has been made to solve the above-mentioned problems, and in particular, a spreader for agrochemicals which is excellent in spreadability to a plant leaf surface, and storage stability even when containing the spreader for agrochemicals for a long period of time It is an object of the present invention to provide an agrochemical spray solution having excellent properties (particularly viscosity stability).
- the present invention relates to the following inventions.
- the content of ethylene units is 1.0 mol% or more and 19 mol% or less
- the content of 1,2-glycol bonding units is 1.2 mol% or more and 2.0 mol% or less
- the spreading agent for agricultural chemicals of said [1] whose saponification degree of ethylene modified vinyl alcohol polymer (A) is 95 to 99.7 mol%.
- the compound (B) is (i) a compound (B-1) having an unsaturated aliphatic group having a conjugated double bond, or (ii) conjugated with an unsaturated aliphatic group and an aromatic group
- the spreading agent for agricultural chemicals of said [3] which is a compound (B-2) which forms a heavy bond.
- Compound (B) is a carboxy group or a salt thereof, a hydroxyl group, an ester group, a carbonyl group, an ether group, an amino group, a dialkylamino group, an imino group, an amido group, a cyano group, a diazo group, a nitro group, a mercapto group , At least one functional group selected from the group consisting of sulfone, sulfoxide, sulfide, thiol, sulfonic acid and salts thereof, phosphoric acid and salts thereof, phenyl group, and halogen atoms, Pesticide spreading agents for pesticides according to any of 3) to [5].
- the compound (B) is a compound (B-1) having an unsaturated aliphatic group having a conjugated double bond, and the compound (B-1) has a polar group.
- a spreader for agricultural chemicals [8]
- the polar group is carboxy group or a salt thereof, hydroxy group, ester group, carbonyl group, ether group, amino group, dialkylamino group, imino group, amido group, cyano group, cyano group, diazo group, nitro group, mercapto group, sulfone
- An agrochemical spray solution comprising the agrochemical spreading agent according to any one of the above [1] to [8], the agrochemical active ingredient and water.
- the spreader for agricultural chemicals of the present invention is particularly excellent in spreadability on plant leaf surfaces.
- the agrochemical spray solution containing the agrochemical spreading agent is excellent in storage stability (particularly viscosity stability) even when stored for a long time.
- the spreading agent for agrochemicals and the agrochemical spray solution of the present invention will be described in detail.
- the present invention is not limited to the embodiments described below.
- the upper limit value and the lower limit value of the numerical range can be combined as appropriate.
- the spreader for agricultural chemicals of the present invention has an ethylene unit content of 1.0 mol% or more and 19 mol% or less, and a content of 1,2-glycol bonding units of 1.2 mol% or more and 2.0 mol Ethylene modified vinyl alcohol polymer (A) having a viscosity average polymerization degree of 200 to 5,000 and a saponification degree of 80 mol% to 99.9 mol% (hereinafter referred to as “vinyl alcohol-based weight” Coalescing is sometimes abbreviated as "PVA”.
- the ethylene-modified PVA (A) has a hydrophobic ethylene unit, which makes it possible to further prevent the runoff of the agrochemical due to rainfall or the like, and further has no cross-linked structure and therefore contains an agrochemical spreading agent
- the spray solution is excellent in long-term storage stability.
- the ethylene unit content is 1.0 mol% or more and 19 mol% or less, preferably 1.5 mol% or more and 15 mol% or less, and 2.0 mol% or more and 12 mol% The following are more preferable.
- the ethylene unit content is less than 1.0 mol%, the water resistance of the film formed by the obtained agrochemical spray solution becomes insufficient, and as a result, the effect of preventing the agrochemical runoff due to rainfall becomes insufficient. . In addition, the viscosity stability of the agrochemical spray solution is also insufficient.
- the content of the ethylene unit exceeds 19 mol%, dissolution of ethylene-modified PVA (A) in water becomes difficult.
- the content of the ethylene unit is determined, for example, from 1 H-NMR of a vinyl ester copolymer containing an ethylene unit which is a precursor or reacetylate of the ethylene-modified PVA. That is, the obtained vinyl ester copolymer is sufficiently reprecipitated and purified three or more times with n-hexane / acetone, and then dried under reduced pressure at 80 ° C. for 3 days to obtain a vinyl ester copolymer for analysis. Make. The polymer was dissolved in DMSO-d 6, 1 H- NMR ( Example: 500 MHz) measured at 80 ° C. using a.
- Ethylene unit using a peak (4.7 to 5.2 ppm) derived from main chain methylene of vinyl ester and a peak (0.8 to 1.6 ppm) derived from ethylene, vinyl ester and main chain methylene of third component Can be calculated.
- the viscosity average degree of polymerization (hereinafter sometimes simply referred to as “polymerization degree”) of the above ethylene-modified PVA (A) is 200 or more and 5000 or less, preferably 300 or more and 4000 or less, more preferably 350 or more and 3000 or less, 500 or more and 2500 or less are more preferable.
- polymerization degree When the viscosity average degree of polymerization is less than 200, the water resistance of the film formed by the obtained agrochemical spray solution becomes insufficient, and as a result, the effect of preventing the runoff of the agrochemical due to rain etc. becomes insufficient.
- ethylene-modified PVA (A) having a viscosity average degree of polymerization exceeding 5000 is difficult to produce.
- the degree of saponification of the ethylene-modified PVA (A) is 80 mol% to 99.9 mol%, preferably 90 mol% to 99.8 mol%, and more preferably 95 mol% to 99.7 mol%. preferable. If the degree of saponification is less than 80 mol%, the solubility in water decreases, and it becomes difficult to prepare a spray solution in the form of an aqueous solution, or the water resistance of the film formed by the obtained pesticide spray solution is not good. It will be enough. On the other hand, when the degree of saponification exceeds 99.9 mol%, the viscosity increases rapidly during storage of the obtained agrochemical spray solution, resulting in insufficient viscosity stability.
- the content of 1,2-glycol bonding unit of the above ethylene-modified PVA (A) is 1.2 mol% or more and 2.0 mol% or less, preferably 1.3 mol% or more and 1.9 mol% or less, 1 .4 mol% or more and 1.8 mol% or less are more preferable. If the content of the 1,2-glycol bonding unit is less than 1.2 mol%, the viscosity stability of the obtained agrochemical spray solution will be insufficient. On the other hand, ethylene-modified PVA (A) in which the content of 1,2-glycol bonding units exceeds 2.0 mol% is difficult to produce.
- the content of 1,2-glycol bonding unit can be controlled by various methods such as type of vinyl ester, solvent, polymerization temperature, copolymerization of vinylene carbonate and the like.
- control by polymerization temperature is preferred in the present invention.
- the content of 1,2-glycol binding unit was determined by dissolving the obtained ethylene-modified PVA (A) in water in about 2 hours in an open container, and then flowing the solution onto a polyethylene terephthalate substrate and drying it. Cast film. The obtained film was dissolved in DMSO-d 6 and calculated by measuring at 80 ° C. using 1 H-NMR (500 MHz).
- the ethylene-modified PVA (A) is prepared, for example, by copolymerizing ethylene and a vinyl ester-based monomer to form a vinyl ester-based copolymer having an ethylene unit, and then converting the vinyl ester-based copolymer to sodium hydroxide It can be obtained by saponification using a saponification catalyst such as, and grinding and drying as necessary.
- Examples of the method of copolymerization of ethylene and a vinyl ester monomer include known methods such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. Among them, bulk polymerization or solution polymerization which is carried out in a solvent-free or solvent such as alcohol can be usually employed. As said alcohol, lower alcohols, such as methanol, ethanol, propanol, etc. are mentioned.
- 2,2'-azobis isobutyronitrile
- 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile)
- 2,2'- Well-known polymerization initiators such as azo-based initiators such as azobis (2,4-dimethyl-valeronitrile), benzoyl peroxide, n-propyl peroxydicarbonate, or peroxide-based initiators can be mentioned.
- the polymerization temperature is not particularly limited, and is preferably 0 ° C. to 150 ° C., more preferably room temperature or more and 150 ° C. or less, still more preferably room temperature or more and not more than the boiling point of the solvent used, and particularly preferably 30 to 60 ° C.
- vinyl ester monomer examples include vinyl formate, vinyl acetate, vinyl propionate, vinyl valerate, vinyl caprate, vinyl laurate, vinyl stearate, vinyl benzoate, vinyl pivalate and vinyl versatate. Among them, vinyl acetate is preferred.
- the ethylene-modified PVA (A) may contain a vinyl alcohol unit, an ethylene unit and a monomer unit other than a vinyl ester unit as long as the effects of the present invention are not impaired.
- Such units include ⁇ -olefins such as propylene, 1-butene, isobutene and 1-hexene; unsaturated acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, maleic anhydride, itaconic acid or the like Salts or mono- or dialkyl esters etc.
- Nitriles such as acrylonitrile, methacrylonitrile etc.
- Amides such as acrylamide, methacrylamide etc.
- Vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether etc.
- Ethylene Hydroxyl-containing vinyl ethers such as glycol vinyl ether, 1,3-propanediol vinyl ether, 1,4-butanediol vinyl ether; allyl acetate, propyl allyl ether Allyl ethers such as tellurium, butyl allyl ether and hexyl allyl ether; monomers having an oxyalkylene group; vinyl silanes such as vinyltrimethoxysilane; 3-buten-1-ol, 4-penten-1-ol, 5 Hydroxy-containing ⁇ -olefins such as -hexen-1-ol, 7-octen-1-ol, 9-decene-1-ol, 3-methyl-3-buten-1-ol; ethylenesulfonic
- the spreader for agrochemicals of the present invention is excellent in spreadability on the foliage of plants, and from the viewpoint that the agrochemical spray solution containing the spreader for agrochemicals is more excellent in viscosity stability after long-term storage, the ethylene modified PVA
- the compound (B) has a structure in which at least two ethylenic double bonds are connected via one ethylenic single bond.
- the compound (B) having such a conjugated double bond has a conjugated diene compound having a structure in which two ethylenic double bonds and one ethylenic single bond are alternately connected, three ethylenic di-bonds.
- Conjugated triene compounds having a structure in which a heavy bond and two ethylenic single bonds are alternately connected, and a conjugated polyene having a structure in which a larger number of ethylenic double bonds and ethylenic single bonds are alternately connected
- Included are compounds and also conjugated triene compounds such as 2,4,6-octatriene.
- conjugated double bonds used in the present invention, a plurality of conjugated double bonds may be independently formed in one molecule.
- conjugated trienes may be contained in the same molecule.
- the compound which has individual is also included.
- the compound (B) may have another functional group in addition to the conjugated double bond.
- Other functional groups include, for example, carboxy group and salts thereof, hydroxyl group, ester group, carbonyl group, ether group, amino group, dialkylamino group (for example, linear or branched having 1 to 3 carbon atoms such as dimethylamino group) Alkylamino group having a chain alkyl group), imino group, amido group, cyano group, diazo group, nitro group, mercapto group, sulfone group, sulfone group, sulfoxide group, sulfide group, thiol group, sulfonic acid group and salts thereof, phosphorus Acid groups and salts thereof, phenyl groups, halogen atoms and the like can be mentioned.
- Such functional group may be directly bonded to a carbon atom in the conjugated double bond, or may be bonded at a position apart from the conjugated double bond.
- the multiple bond in the functional group may be at a position where it can be conjugated with the conjugated double bond, and, for example, 1-phenylbutadiene having a phenyl group, sorbic acid having a carboxy group, and the like are also included in the compound (B).
- the compound (B) may have a nonconjugated double bond, and may have a nonconjugated triple bond.
- compound (B) examples include 2,4-diphenyl-4-methyl-1-pentene, 1,3-diphenyl-1-butene, 2,3-dimethyl-1,3-butadiene, and 4-methyl-. 1,3-pentadiene, 1-phenyl-1,3-butadiene, sorbic acid, myrcene and the like.
- the compound (B) is not particularly limited as long as it has a conjugated double bond, and (i) a compound (B-1) having an unsaturated aliphatic group having a conjugated double bond, or (ii) unsaturated It may be a compound (B-2) which forms a conjugated double bond with an aliphatic group and an aromatic group.
- Examples of the compound (B-1) having an unsaturated aliphatic group having a conjugated double bond include 2,3-dimethyl-1,3-butadiene, sorbic acid and the like.
- a compound (B-2) which forms a conjugated double bond with an unsaturated aliphatic group and an aromatic group 2,4- diphenyl 4- methyl 1-pentene, 1, 3- diphenyl 1- butene, etc.can be mentioned.
- a compound (B-1) having an unsaturated aliphatic group having a conjugated double bond is preferable, and a compound having a conjugated double bond having a polar group is selected. Is also preferred.
- the compound (B) of the compounds (B-1) having an unsaturated aliphatic group having a conjugated double bond the compound (B-1) having a polar group is more preferable, and a compound having a polar group is more preferable. And the compound (B-1) which is a conjugated diene compound is more preferable.
- polar group among the other functional groups described above, carboxy group and salts thereof, hydroxy group, ester group, ester group, carbonyl group, ether group, amino group, dialkylamino group, imino group, amido group, cyano group, diazo group, Nitro group, mercapto group, sulfone group, sulfoxide group, sulfide group, thiol group, sulfonic acid group and salts thereof, phosphoric acid group and salts thereof, halogen atom and the like are mentioned, and carboxy group and salts thereof and hydroxyl group are preferable.
- the content of the compound (B) is preferably 0.1 ppm to 3000 ppm, more preferably 1 ppm to 2000 ppm, still more preferably 3 ppm to 1500 ppm, and particularly preferably 5 ppm to 1000 ppm.
- content of a compound (B) represents content (mass ppm) of a compound (B) with respect to the total mass of ethylene modified PVA (A) and a compound (B).
- the compound (B) As a method of adding the compound (B), it is preferable to add the compound (B) after obtaining a vinyl ester copolymer having an ethylene unit and before saponifying the vinyl ester copolymer: It is preferable at the point which improves the storage stability over a long period of time.
- the agrochemical spray solution of the present invention preferably contains the agrochemical spreading agent, the agrochemical active ingredient and water described above, and may contain a solvent other than water. 0.01 mass% or more and 10 mass% or less are preferable, and, as for content of ethylene modified PVA (A) with respect to the whole quantity of agrochemical spraying liquid, 0.05 mass% or more and 8 mass% or less are more preferable 0.1 mass % Or more and 5% by mass or less is more preferable. When the content of the ethylene-modified PVA (A) is in the above range, the spreadability, the spreadability and the like are further improved.
- 0.001 mass% or more and 20 mass% or less are preferable, and, as for the total solid content density
- the method for producing the agrochemical spray solution is not particularly limited, but from the viewpoint of obtaining a uniform agrochemical spray solution with excellent solubility, a solution (especially an aqueous solution) of an agrochemical spreading agent containing ethylene-modified PVA (A) and the agrochemical It is preferred to mix with the active ingredient. 0.1 mass% or more and 20 mass% or less are preferable, and, as for the density
- 0.1 mass part or more and 1000 mass parts or less are preferable with respect to 100 mass parts of ethylene modified PVA (A), and, as for content of agrochemical active ingredient, 1 mass part or more and 500 mass parts or less are more preferable. If the content of the agrochemical active ingredient is less than 0.1 parts by mass, it tends to be difficult to provide the required agrochemical active ingredient. On the other hand, if it exceeds 1000 parts by mass, the spreadability tends to decrease.
- the viscosity of the agrochemical spray solution (according to JIS K 6726: 1994 (measured at 20 ° C.)) is preferably diluted with a solvent such as water to 200 mPa ⁇ s or less, more preferably 100 mPa ⁇ s or less, 0. 1 to 80 mPa ⁇ s is more preferable. If the viscosity of the agrochemical spray solution is too high, the sprayability tends to decrease.
- the above-mentioned agrochemical spray liquid is excellent in storage stability even when stored for a long period of time because the ethylene-modified PVA (A) contained as a spreading agent does not have a crosslinked structure.
- the ratio ( ⁇ 1 week / ⁇ initial ) of the initial viscosity (( initial ) at 5 ° C and 12 rpm of the agrochemical spray solution and the viscosity ( ⁇ 1 week ) after standing for 1 week is 1 or more and less than 5
- 1 or more and less than 2.5 are more preferable.
- the method of measuring the viscosity ratio is as described in the examples described later.
- the pesticidal active ingredient examples include herbicides, insecticides, fungicides, plant conditioners, fertilizers and the like, and a liquid or powder form is preferable at normal temperature (21 ° C.). Among them, it is preferable to contain a water-soluble pesticidally active ingredient having a saturated solubility of 50 ppm or more in normal temperature water (21 ° C.).
- agrochemical active ingredients may be used alone, or two or more thereof may be used in combination.
- herbicides examples include 2,4-PA, MCP, MCPB, MCPA thioethyl (phenothiol), clomeprop, naproanilide, CNP, cromethonil, biphenox, MCC, benthiocarb, esprocarb, molinate, dimepiperate, DCPA, butachlor, pretilachlor, bromobutide And mefenacet, dymuron, simetryn, promethrin, dimethamethrin, bendazone, oxadiazon, pyrazolate, pyrazoloxyphen, benzophenap, trifluralin, piperophos, ACN, bensulfuron methyl and the like.
- the insecticides include, for example, MPP, MEP, ECP, pyrimiphos methyl, diazinon, isoxathion, pyridafenthion, florpyrifos methyl, chlorpyrifos, ESP, bamidthione, profenophos, marathon, PAP, dimethoate, formothion, thiomethone, ethylthiomethone, hosparone, PMP, DMTP , Prothiophos, sulprofos, pyraclophos, DDVP, monochlorophos, BRP, CVMP, dimethylvinphos, CVP, propaphos, acephate, isofenphos, salithion, DEP, EPN, ethion, NAC, MTMC, MIPC, BPMC, PHC, MPMC, XMC, Ethiophene carb, bendio carb, pyrimicarb, carbosulfan, be
- germicide for example, kasugamycin, benomyl, thiabendazole, thiophanate methyl, thiuram, prochloraz, trifumizole, ipconazole, basic copper chloride, basic copper sulfate, cupric hydroxide, copper nonylphenol sulfonic acid, DBEDC, copper terephthalate, inorganic Sulfur, Zineb, Manneb, Manzeb, Ambam, Polycarbamate, Organic Nickel, Propineb, Dilam, Thiadiazine, Captan, Sulfenic Acid, TPN, Phthalide, IBP, EDDP, Torclophos Methyl, Pyrazophos, Josep, Carbendazole, Dietophalcarb, Iprodione, Vinclozolin, procymidone, fluorimide, oxycarboxin, mepronil, flutolanil, teclophthalam, trichlamide, penciclone, metal
- plant regulators include inabenfide, oxyethylene docosanol, nicotinic acid amide, benzylaminopurine and the like.
- Fertilizers include, for example, oxamide, crotonylidene diurea (CDU), isobutylidene diurea (IB), ureaform, fertile phosphate fertilizer, mixed phosphate fertilizer, by-product lime fertilizer, calcium carbonate fertilizer, mixed lime fertilizer, mineral silicic acid Fertilizers, other silica-based fertilizers, hydroxide-base fertilizers, by-product base-earth fertilizers, processed base-earth fertilizers, mineral manganese fertilizers, mineral trace element fertilizers and the like.
- CDU crotonylidene diurea
- IB isobutylidene diurea
- ureaform fertile phosphate fertilizer
- mixed phosphate fertilizer mixed phosphate fertilizer
- by-product lime fertilizer calcium carbonate fertilizer
- mixed lime fertilizer mixed lime fertilizer
- mineral silicic acid Fertilizers other silica-based fertilizers
- hydroxide-base fertilizers by-
- processed and processed silicic acid phosphate fertilizer for the purpose of adjusting the pH by silicic acid supply and alkali component as well as silicified silicic acid fertilizer.
- oxamide, crotonylidene diurea (CDU), isobutylidene diurea (IB), ureaform, processed mineral phosphate phosphate fertilizer, mineral phosphate silicon fertilizer, mixed phosphate fertilizer are preferable.
- the agrochemical spray solution of the present invention may contain other components as long as the effects of the present invention are not impaired.
- Other components include, for example, other spreading agents, PVA other than ethylene-modified PVA (A), water-soluble resin other than PVA, emulsifier, wettable powder, flowable agent, surfactant, thickener, cross-linking Agents, preservatives, etc. 10 mass% or less is preferable with respect to the whole quantity of agrochemical spray liquid, and, as for content of another component, 5 mass% or less is more preferable.
- the present invention includes embodiments in which the above-described configurations are variously combined within the technical scope of the present invention as long as the effects of the present invention can be obtained.
- Viscosity average degree of polymerization of ethylene modified PVA (A) The viscosity average degree of polymerization of each ethylene-modified PVA was determined by the method described in JIS K 6726 (1994).
- the content of 1,2-glycol-bonded units (monomer units bonded by 1,2-glycol bond) contained in the purified PVA has a peak of 3.2 to 4.0 ppm derived from the methine proton of the vinyl alcohol unit From (Integral value ⁇ ) and a 3.25 ppm peak (Integral value ⁇ ) derived from one methine proton of 1,2-glycol binding unit, it is calculated according to the following formula (I).
- Content of 1,2-glycol bonding unit of PVA (mol%) 100 ⁇ ⁇ / ⁇ (I)
- Example 1 (PVA-1: Production of ethylene modified PVA (A)) 106.1 kg of vinyl acetate and 43.9 kg of methanol are charged in a 250 L pressure reaction tank equipped with a stirrer, nitrogen inlet, ethylene inlet and polymerization initiator addition port, heated to 60 ° C. and then bubbling nitrogen for 30 minutes The system was purged with nitrogen. Subsequently, ethylene was introduced such that the pressure in the reaction tank was 1.4 kg / cm 2 . A 2.8 g / L solution is prepared by dissolving 2,2'-azobis (4-methoxy-2,4-dimethyl valeronitrile) (AMV) as a polymerization initiator in methanol, and bubbling with nitrogen gas is performed to obtain nitrogen. Replaced.
- AMV 2,2'-azobis (4-methoxy-2,4-dimethyl valeronitrile
- PVAc polyvinyl acetate
- Methanol was added to the obtained PVAc solution to adjust the concentration to 25% by mass to 400 g of a methanol solution of PVAc (100 g of PVAc in the solution), 46.5 g (vinyl acetate unit in PVAc) in molar ratio Saponification was carried out at 40 ° C. by adding an alkaline solution (NaOH 10% by weight in methanol) of [MR] 0.08).
- the gelled product was pulverized in a grinder and subjected to a saponification reaction for a total of 1 hour, and then 1000 g of methyl acetate was added to neutralize the remaining alkali. After confirming the completion of neutralization using a phenolphthalein indicator, 1000 g of methanol was added to PVA obtained as a white solid by filtration, and left to stand at room temperature for 3 hours. After repeating the above washing operation three times, the PVA obtained by centrifugal drainage was left in a drier at 70 ° C. for 2 days to obtain an ethylene-modified PVA (PVA-1) of the present invention. Physical properties of PVA-1 are shown in Table 2.
- a 5% by mass aqueous solution was prepared using PVA-1 and 0.5 parts by mass of the pesticidal active ingredient (Orthion active ingredient: Sumitomo Chemical Horticulture active ingredient: Acephate, MEP) was added to 100 parts by mass of the prepared PVA aqueous solution.
- the viscosity stability of the agrochemical spray solution prepared using PVA-1 was evaluated according to the method described above.
- 0.2 parts by mass of a blush was added to evaluate the spreadability of the agrochemical spray solution, and the evaluation was made according to the above-mentioned method. The results are shown in Table 2.
- Example 2 to 5 (Production of PVA-2 to PVA-5, Preparation of Pesticide Spray Solution)
- PVAs PVA-2 to PVA-5 were produced in the same manner as in Example 1 except that they were changed as shown in 1.
- Physical properties of PVA-2 to PVA-5 are shown in Table 2.
- Pesticide spray solutions were prepared in the same manner as in Example 1, except that PVA-2 to PVA-5 were used instead of PVA-1.
- the viscosity stability and spreadability of the obtained agrochemical spray solution were evaluated according to the method described above. The results are shown in Table 2.
- Comparative Example 1 Manufacture of PVA-i, Preparation of Pesticide Spray Solution
- a reaction vessel equipped with a stirrer, a nitrogen inlet and a polymerization initiator addition port 2.4 kg of vinyl acetate and 1.0 kg of methanol were charged, and the temperature was raised to 60 ° C. and nitrogen substitution was carried out for 30 minutes by nitrogen bubbling.
- a 10% by mass solution of 2,2′-azobis (isobutyronitrile) (AIBN) dissolved in methanol as a polymerization initiator was prepared, and nitrogen substitution was performed by bubbling with nitrogen gas.
- AIBN 2,2′-azobis (isobutyronitrile)
- the gelled product was pulverized in a grinder and subjected to a saponification reaction for a total of 1 hour, and then 1000 g of methyl acetate was added to neutralize the remaining alkali. After confirming the completion of neutralization using a phenolphthalein indicator, 1000 g of methanol was added to PVA obtained as a white solid by filtration, and left to stand at room temperature for 3 hours. After repeating the above-mentioned washing operation three times, PVA (PVA-i) was obtained by leaving the resulting PVA obtained by centrifugation and draining at 70 ° C. for 2 days in a drier for drying. Physical properties of PVA-i are shown in Table 2. An agricultural chemical spray solution was prepared in the same manner as in Example 1 except that PVA-i was used instead of PVA-1. The viscosity stability and spreadability of the obtained agrochemical spray solution were evaluated according to the method described above. The results are shown in Table 2.
- Comparative Example 2 (Production of PVA-ii) Same as Comparative Example 1 except that the amount of vinyl acetate, the polymerization time and the polymerization rate, the type of the compound (B), and the concentration of the PVAc solution at the time of saponification and the amount of the saponification catalyst used are changed as shown in Table 1. , PVA-ii were produced. Physical properties of PVA-ii are shown in Table 2. A pesticide spray solution was prepared in the same manner as in Example 1 except that PVA-ii was used instead of PVA-1. The viscosity stability and spreadability of the obtained agrochemical spray solution were evaluated according to the method described above. The results are shown in Table 2.
- Comparative Example 3 (Production of PVA-iii) 1.36 kg of vinyl acetate and 2.04 kg of methanol are charged in a 5 L pressure reaction tank equipped with a stirrer, nitrogen inlet, ethylene inlet and polymerization initiator addition port, and bubbling nitrogen at 30 ° C for 30 minutes at 0 ° C. It replaced with nitrogen. Subsequently, ethylene was introduced such that the pressure in the reaction vessel was 0.2 kg / cm 2 . The polymerization was initiated by charging 81.6 g of 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile) (AMV) as a polymerization initiator.
- AMV 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile
- ethylene was introduced to maintain the reactor pressure at 0.2 kg / cm 2 and the polymerization temperature at 0 ° C. to carry out the polymerization. After 35 hours, the polymerization was stopped when the polymerization rate reached 60%. After the reactor was opened to remove ethylene, nitrogen gas was further bubbled. Then, unreacted vinyl acetate monomer was removed under reduced pressure to obtain a methanol solution of PVAc. Methanol was added to the obtained PVAc solution to adjust the concentration to 25% by mass to 400 g of a methanol solution of PVAc (100 g of PVAc in the solution), 46.5 g (molar ratio to vinyl acetate unit in PVAc [MR Saponification was carried out at 60 ° C.
- the spreader for agricultural chemicals of the present invention is excellent in spreadability because it contains a specific ethylene-modified PVA (A). Furthermore, the agrochemical spray solution obtained by using the agrochemical spreading agent is excellent in viscosity stability even when stored for a long time. Therefore, it is effective in the application to the liquid spray liquid (For example, spray liquid to a leaf, a stem, a fruit etc.) used in the field of agriculture.
- A ethylene-modified PVA
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Abstract
Description
[1]エチレン単位の含有量が1.0モル%以上19モル%以下であり、1,2-グリコール結合単位の含有量が1.2モル%以上2.0モル%以下であり、粘度平均重合度が200以上5000以下であり、且つけん化度が80モル%以上99.9モル%以下であるエチレン変性ビニルアルコール系重合体(A)を含有する、農薬用展着剤。
[2]エチレン変性ビニルアルコール系重合体(A)のけん化度が95モル%以上99.7モル%以下である、上記[1]の農薬用展着剤。
[3]さらに分子量1000以下の共役二重結合を有する化合物(B)を0.1ppm以上3000ppm以下含有する、上記[1]又は[2]の農薬用展着剤。
[4]化合物(B)が、(i)共役二重結合を有する不飽和脂肪族基を有する化合物(B-1)である、又は(ii)不飽和脂肪族基と芳香族基により共役二重結合を形成する化合物(B-2)である、上記[3]の農薬用展着剤。
[5]化合物(B)が、共役ジエン化合物である、上記[3]又は[4]の農薬用展着剤。
[6]化合物(B)が、カルボキシ基及びその塩、水酸基、エステル基、カルボニル基、エーテル基、アミノ基、ジアルキルアミノ基、イミノ基、アミド基、シアノ基、ジアゾ基、ニトロ基、メルカプト基、スルホン基、スルホキシド基、スルフィド基、チオール基、スルホン酸基及びその塩、リン酸基及びその塩、フェニル基、及びハロゲン原子からなる群から選ばれる少なくとも1種の官能基を有する、上記[3]~[5]のいずれかの農薬用展着剤。
[7]化合物(B)が、共役二重結合を有する不飽和脂肪族基を有する化合物(B-1)であり、前記化合物(B-1)が極性基を有する、上記[3]~[6]のいずれかの農薬用展着剤。
[8]極性基が、カルボキシ基及びその塩、水酸基、エステル基、カルボニル基、エーテル基、アミノ基、ジアルキルアミノ基、イミノ基、アミド基、シアノ基、ジアゾ基、ニトロ基、メルカプト基、スルホン基、スルホキシド基、スルフィド基、チオール基、スルホン酸基及びその塩、リン酸基及びその塩、及びハロゲン原子からなる群から選ばれる少なくとも1種の官能基を有する化合物である、上記[7]の農薬用展着剤。
[9]上記[1]~[8]のいずれかの農薬用展着剤、農薬活性成分及び水を含有する農薬散布液。
[10]農薬活性成分の含有量が、エチレン変性ビニルアルコール系重合体(A)100質量部に対して、0.1質量部以上1000質量部以下である、上記[9]の農薬散布液。
[11]5℃、12rpmにおける初期粘度(η初期)と、1週間放置後の粘度(η1週間)との比(η1週間/η初期)が5未満である、上記[9]又は[10]の農薬散布液。
本発明の農薬用展着剤は、エチレン単位の含有量が1.0モル%以上19モル%以下であり、1,2-グリコール結合単位の含有量が1.2モル%以上2.0モル%以下であり、粘度平均重合度が200以上5000以下であり、且つけん化度が80モル%以上99.9モル%以下であるエチレン変性ビニルアルコール系重合体(A)(以下、ビニルアルコール系重合体を「PVA」と略記することがある)を含有する。エチレン変性PVA(A)は、疎水性のエチレン単位を有するため降雨等による農薬の流亡をより一層防ぐことが可能になり、さらに架橋構造を有さないため該農薬用展着剤を含有する農薬散布液は長期の保存安定性に優れる。
上記エチレン変性PVA(A)において、エチレン単位の含有量は1.0モル%以上19モル%以下であり、1.5モル%以上15モル%以下が好ましく、2.0モル%以上12モル%以下がより好ましい。エチレン単位の含有量が1.0モル%未満の場合は、得られる農薬散布液により形成される皮膜の耐水性が不十分となり、結果として降雨等による農薬の流亡を防ぐ効果が不十分となる。また、農薬散布液の粘度安定性も不十分となる。一方、エチレン単位の含有量が19モル%を超える場合は、エチレン変性PVA(A)の水への溶解が困難となる。
P=([η]×103/8.29)(1/0.62)
本発明の農薬用展着剤は、植物葉面への展着性に優れ、該農薬用展着剤を含有する農薬散布液が長期保存後の粘度安定性により優れる点から、上記エチレン変性PVA(A)に加えて、さらに分子量1000以下の共役二重結合を有する化合物(B)を0.1ppm以上3000ppm以下含有することが好ましい。化合物(B)は、少なくとも2個のエチレン性二重結合が1個のエチレン性単結合を介して繋がっている構造を有する。このような共役二重結合を有する化合物(B)は、2個のエチレン性二重結合と1個のエチレン性単結合とが交互に繋がってなる構造の共役ジエン化合物、3個のエチレン性二重結合と2個のエチレン性単結合とが交互に繋がってなる構造の共役トリエン化合物、及びそれ以上の数のエチレン性二重結合とエチレン性単結合とが交互に繋がってなる構造の共役ポリエン化合物を包含し、さらに2,4,6-オクタトリエンのような共役トリエン化合物をも包含する。また、本発明で用いられる共役二重結合を有する化合物には、共役二重結合が1分子中に独立して複数組あってもよく、例えば、桐油のように共役トリエンを同一分子内に3個有する化合物も含まれる。
本発明の農薬散布液は、上記の農薬用展着剤、農薬活性成分及び水を含有することが好ましく、水以外の溶媒を含有してもよい。農薬散布液の全量に対して、エチレン変性PVA(A)の含有量は0.01質量%以上10質量%以下が好ましく、0.05質量%以上8質量%以下がより好ましく、0.1質量%以上5質量%以下がさらに好ましい。エチレン変性PVA(A)の含有量を上記範囲にすると展着性及び散布性等が一層向上する。
各エチレン変性PVAの粘度平均重合度は、JIS K 6726(1994年)に記載の方法により求めた。
各エチレン変性PVAのけん化度は、JIS K 6726(1994年)に記載の方法により求めた。
以下の実施例で得られたエチレン変性PVAを解放容器中で水に約2時間かけて溶解させた後、ポリエチレンテレフタレート基材上に溶液を流涎、乾燥させることでキャストフィルムを作製した。得られたフィルムを、DMSO-d6に溶解して0.1質量%溶液にし、当該溶液にトリフルオロ酢酸を数滴(約0.1ml)加えて、1H-NMR(500MHz)を用いて80℃で測定した。精製PVAに含まれる1,2-グリコール結合単位(1,2-グリコール結合で結合した単量体単位)の含有量は、ビニルアルコール単位のメチンプロトンに由来する3.2~4.0ppmのピーク(積分値α)と、1,2-グリコール結合単位の1つのメチンプロトンに由来する3.25ppmのピーク(積分値β)とから、下記式(I)に従って算出される。
PVAの1,2-グリコール結合単位の含有量(モル%)=100×β/α (I)
後記する実施例及び比較例で得た農薬散布液を300mlのガラス製ビーカーにいれ、5℃で1週間放置し、5℃放置後粘度(η1週間)と5℃の初期粘度(η初期)との比(増粘倍率=η1週間/η初期)を求め以下の基準で評価した。測定は、JIS K 6726(1994年)の回転粘度計法に準じてB型粘度計を用いて5℃、12rpmで行った。
A:η1週間/η初期が1以上2.5未満
B:η1週間/η初期が2.5以上5未満
C:η1週間/η初期が5以上
後記する実施例及び比較例で得た農薬散布液を、植物(シェフレラ)の葉面に霧吹きで散布し、着色した。24時間放置後、その葉面(農薬散布液の散布面)に対し、霧吹きにて10回、水を噴きかけた。そして、農薬散布液が落ちずに残った展着面を目視観察し、農薬散布液の散布面の面積に対する、その展着面の割合を測定し、下記の基準で評価した。
A:残存着色面が80%以上
B:残存着色面が40%以上80%未満
C:残存着色面が40%未満
(PVA-1:エチレン変性PVA(A)の製造)
撹拌機、窒素導入口、エチレン導入口及び重合開始剤添加口を備えた250L加圧反応槽に酢酸ビニル106.1kg、メタノール43.9kgを仕込み、60℃に昇温した後30分間窒素バブリングにより系中を窒素置換した。次いで反応槽圧力が1.4kg/cm2となるようにエチレンを導入した。重合開始剤として2,2’-アゾビス(4-メトキシ-2,4-ジメチルバレロニトリル)(AMV)をメタノールに溶解した濃度2.8g/L溶液を調製し、窒素ガスによるバブリングを行って窒素置換した。上記反応槽の内温を60℃に調整した後、上記重合開始剤溶液53mlを注入し重合を開始した。重合中はエチレンを導入して反応槽圧力を1.4kg/cm2に、重合温度を60℃に維持し、上記重合開始剤溶液を用いて168ml/hrでAMVを連続添加して重合した。4時間後に重合率が20%となったところで、ソルビン酸を2.22g投入後、冷却して重合を停止した。反応槽を開放してエチレンを除去した後、さらに窒素ガスをバブリングした。次いで減圧下に未反応の酢酸ビニルモノマーを除去しポリ酢酸ビニル(以下、「PVAc」と略記することがある)のメタノール溶液とした。得られた該PVAc溶液にメタノールを加えて濃度が25質量%となるように調整したPVAcのメタノール溶液400g(溶液中のPVAc100g)に、46.5g(PVAc中の酢酸ビニル単位に対してモル比[MR]0.08)のアルカリ溶液(NaOHの10質量%メタノール溶液)を添加して、40℃でけん化を行った。アルカリ添加後、ゲル化したものを粉砕器にて粉砕し、合計1時間けん化反応を行った後、酢酸メチル1000gを加えて残存するアルカリを中和した。フェノールフタレイン指示薬を用いて中和の終了を確認後、濾別して得られた白色固体のPVAにメタノール1000gを加えて室温で3時間放置洗浄した。上記洗浄操作を3回繰り返した後、遠心脱液して得られたPVAを乾燥機中70℃で2日間放置して、本発明のエチレン変性PVA(PVA-1)を得た。PVA-1の物性を表2に示す。
PVA-1を用いて5質量%水溶液を調製し、調製したPVA水溶液100質量部に対して、農薬活性成分(住友化学園芸製オルチオン 有効成分:アセフェート、MEP)を0.5質量部添加した。PVA-1を用いて作製した農薬散布液の粘度安定性を上述の方法に従って評価した。また、農薬散布液の展着性評価のため食紅を0.2質量部添加後、上述の方法に従って評価した。結果を表2に示す。
(PVA-2~PVA-5の製造、農薬散布液の調製)
エチレン、酢酸ビニル、メタノール及び重合開始剤の量、化合物(B)の種類及び量、重合温度、重合時間及び重合率、並びに、けん化時におけるPVAc溶液濃度及びけん化触媒の使用量、けん化温度を表1に示すように変更した以外は実施例1と同様にして、各種PVA(PVA-2~PVA-5)を製造した。PVA-2~PVA-5の物性を表2に示す。PVA-1に代えて、PVA-2~PVA-5をそれぞれ用いた以外は実施例1と同様にして、農薬散布液を調製した。得られた農薬散布液の粘度安定性及び展着性を上述の方法に従って評価した。結果を表2に示す。
(PVA-iの製造、農薬散布液の調製)
撹拌機、窒素導入口及び重合開始剤添加口を備えた反応槽に酢酸ビニル2.4kg、メタノール1.0kgを仕込み、60℃に昇温した後30分間窒素バブリングにより系中を窒素置換した。次いで重合開始剤として2,2’-アゾビス(イソブチロニトリル)(AIBN)をメタノールに溶解した濃度10質量%溶液を調製し、窒素ガスによるバブリングを行って窒素置換した。上記反応槽の内温を60℃に調整した後、上記重合開始剤溶液10mlを注入し重合を開始した。1.4時間後に重合率が30%となったところで、1,3-ジフェニル-1-ブテンを0.1g添加後、冷却して重合を停止した。未反応酢酸ビニルモノマーを除去しPVAcのメタノール溶液とした。得られた該PVAc溶液にメタノールを加えて濃度が25質量%となるように調整したPVAcのメタノール溶液400g(溶液中のPVAc100g)に、32.6g(PVAc中の酢酸ビニル単位に対するモル比[MR]0.008)のアルカリ溶液(NaOHの10質量%メタノール溶液)を添加して、40℃でけん化を行った。アルカリ添加後、ゲル化したものを粉砕器にて粉砕し、合計1時間けん化反応を行った後、酢酸メチル1000gを加えて残存するアルカリを中和した。フェノールフタレイン指示薬を用いて中和の終了を確認後、濾別して得られた白色固体のPVAにメタノール1000gを加えて室温で3時間放置洗浄した。上記洗浄操作を3回繰り返した後、遠心脱液して得られたPVAを乾燥機中70℃で2日間放置して乾燥することで、PVA(PVA-i)を得た。PVA-iの物性を表2に示す。PVA-1に代えて、PVA-iを用いた以外は実施例1と同様にして、農薬散布液を調製した。得られた農薬散布液の粘度安定性及び展着性を上述の方法に従って評価した。結果を表2に示す。
(PVA-iiの製造)
酢酸ビニルの量、重合時間及び重合率、化合物(B)の種類、並びに、けん化時におけるPVAc溶液濃度及びけん化触媒の使用量を表1に示すように変更した以外は比較例1と同様にして、PVA-iiを製造した。PVA-iiの物性を表2に示す。PVA-1に代えて、PVA-iiを用いた以外は実施例1と同様にして、農薬散布液を調製した。得られた農薬散布液の粘度安定性及び展着性を上述の方法に従って評価した。結果を表2に示す。
(PVA-iiiの製造)
撹拌機、窒素導入口、エチレン導入口及び重合開始剤添加口を備えた5L加圧反応槽に酢酸ビニル1.36kg、メタノール2.04kgを仕込み、0℃にて30分間窒素バブリングにより系中を窒素置換した。次いで反応槽圧力が0.2kg/cm2となるようにエチレンを導入した。重合開始剤として2,2’-アゾビス(4-メトキシ-2,4-ジメチルバレロニトリル)(AMV)を81.6g投入し重合を開始した。重合中はエチレンを導入して反応槽圧力を0.2kg/cm2に、重合温度を0℃に維持し、重合を実施した。35時間後に重合率が60%となったところで重合を停止した。反応槽を開放してエチレンを除去した後、さらに窒素ガスをバブリングした。次いで減圧下で未反応酢酸ビニルモノマーを除去しPVAcのメタノール溶液とした。得られた該PVAc溶液にメタノールを加えて濃度が25質量%となるように調整したPVAcのメタノール溶液400g(溶液中のPVAc100g)に、46.5g(PVAc中の酢酸ビニル単位に対するモル比[MR]0.20)のアルカリ溶液(NaOHの10質量%メタノール溶液)を添加して、60℃でけん化を行った。アルカリ添加後、ゲル化したものを粉砕器にて粉砕し、合計1時間けん化反応を行った後、酢酸メチル1000gを加えて残存するアルカリを中和した。フェノールフタレイン指示薬を用いて中和の終了を確認後、濾別して得られた白色固体のPVAにメタノール1000gを加えて室温で3時間放置洗浄した。上記洗浄操作を3回繰り返した後、遠心脱液して得られたPVAを乾燥機中70℃で2日間放置して乾燥することで、PVA(PVA-iii)を得た。PVA-iiiの物性を表2に示す。PVA-1に代えて、PVA-iiiを用いた以外は実施例1と同様にして、農薬散布液を調製した。得られた農薬散布液の粘度安定性及び展着性を上述の方法に従って評価した。結果を表2に示す。
Claims (11)
- エチレン単位の含有量が1.0モル%以上19モル%以下であり、1,2-グリコール結合単位の含有量が1.2モル%以上2.0モル%以下であり、粘度平均重合度が200以上5000以下であり、且つけん化度が80モル%以上99.9モル%以下であるエチレン変性ビニルアルコール系重合体(A)を含有する、農薬用展着剤。
- エチレン変性ビニルアルコール系重合体(A)のけん化度が95モル%以上99.7モル%以下である、請求項1に記載の農薬用展着剤。
- さらに分子量1000以下の共役二重結合を有する化合物(B)を0.1ppm以上3000ppm以下含有する、請求項1又は2に記載の農薬用展着剤。
- 化合物(B)が、(i)共役二重結合を有する不飽和脂肪族基を有する化合物(B-1)である、又は(ii)不飽和脂肪族基と芳香族基により共役二重結合を形成する化合物(B-2)である、請求項3に記載の農薬用展着剤。
- 化合物(B)が、共役ジエン化合物である、請求項3又は4に記載の農薬用展着剤。
- 化合物(B)が、カルボキシ基及びその塩、水酸基、エステル基、カルボニル基、エーテル基、アミノ基、ジアルキルアミノ基、イミノ基、アミド基、シアノ基、ジアゾ基、ニトロ基、メルカプト基、スルホン基、スルホキシド基、スルフィド基、チオール基、スルホン酸基及びその塩、リン酸基及びその塩、フェニル基、及びハロゲン原子からなる群から選ばれる少なくとも1種の官能基を有する、請求項3~5のいずれかに記載の農薬用展着剤。
- 化合物(B)が、共役二重結合を有する不飽和脂肪族基を有する化合物(B-1)であり、前記化合物(B-1)が極性基を有する、請求項3~6のいずれかに記載の農薬用展着剤。
- 極性基が、カルボキシ基及びその塩、水酸基、エステル基、カルボニル基、エーテル基、アミノ基、ジアルキルアミノ基、イミノ基、アミド基、シアノ基、ジアゾ基、ニトロ基、メルカプト基、スルホン基、スルホキシド基、スルフィド基、チオール基、スルホン酸基及びその塩、リン酸基及びその塩、及びハロゲン原子からなる群から選ばれる少なくとも1種の官能基を有する化合物である、請求項7に記載の農薬用展着剤。
- 請求項1~8のいずれかに記載の農薬用展着剤、農薬活性成分及び水を含有する農薬散布液。
- 農薬活性成分の含有量が、エチレン変性ビニルアルコール系重合体(A)100質量部に対して、0.1質量部以上1000質量部以下である、請求項9に記載の農薬散布液。
- 5℃、12rpmにおける初期粘度(η初期)と、1週間放置後の粘度(η1週間)との比(η1週間/η初期)が5未満である、請求項9又は10に記載の農薬散布液。
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| CN201880054898.7A CN110944511B (zh) | 2017-08-24 | 2018-08-24 | 农药用展布剂和农药散布液 |
| JP2019537708A JP7069179B2 (ja) | 2017-08-24 | 2018-08-24 | 農薬用展着剤及び農薬散布液 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08217604A (ja) | 1995-02-17 | 1996-08-27 | Agurosu:Kk | 農薬活性成分の固着性組成物 |
| JP2001271222A (ja) * | 2000-03-24 | 2001-10-02 | Kuraray Co Ltd | ポリビニルアルコール系水溶性繊維 |
| WO2006022147A1 (ja) * | 2004-08-27 | 2006-03-02 | Konishi Co., Ltd. | 酢酸ビニル樹脂系エマルジョン及びその製造方法 |
| JP2009221461A (ja) * | 2008-02-19 | 2009-10-01 | Kuraray Co Ltd | ビニルアルコール系重合体およびその製造方法 |
| JP2015134704A (ja) | 2013-12-20 | 2015-07-27 | 日本合成化学工業株式会社 | 農業用液状散布剤 |
| JP2016222569A (ja) | 2015-05-29 | 2016-12-28 | 日本合成化学工業株式会社 | 植物用葉面散布液及び植物用葉面散布液の展着方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2291217C (en) * | 1998-12-09 | 2004-09-21 | Kuraray Co., Ltd. | Vinyl alcohol polymer and its composition |
| JP4772175B2 (ja) * | 1998-12-09 | 2011-09-14 | 株式会社クラレ | ビニルアルコール系重合体および組成物 |
| WO2014192931A1 (ja) * | 2013-05-31 | 2014-12-04 | 株式会社クラレ | 耐油性を有する紙複合体 |
| JP6170632B2 (ja) | 2014-07-25 | 2017-07-26 | 株式会社クラレ | ビニルアルコール系共重合体及びそれを含有する組成物並びに乳化重合用分散安定剤 |
| WO2018124241A1 (ja) * | 2016-12-28 | 2018-07-05 | 株式会社クラレ | ポリビニルアルコール組成物及びその用途 |
| JP7058260B2 (ja) * | 2017-03-30 | 2022-04-21 | 株式会社クラレ | 剥離紙原紙及びその製造方法、並びに剥離紙 |
| TWI763947B (zh) * | 2017-11-07 | 2022-05-11 | 日商可樂麗股份有限公司 | 水性乳液、其製造方法及其用途 |
| EP3763210B1 (en) * | 2018-03-08 | 2024-05-01 | Kuraray Co., Ltd. | Agrochemical spray solution |
| US12012528B2 (en) * | 2018-05-25 | 2024-06-18 | Kuraray Co., Ltd. | Resin material, aqueous solution, and adhesive |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08217604A (ja) | 1995-02-17 | 1996-08-27 | Agurosu:Kk | 農薬活性成分の固着性組成物 |
| JP2001271222A (ja) * | 2000-03-24 | 2001-10-02 | Kuraray Co Ltd | ポリビニルアルコール系水溶性繊維 |
| WO2006022147A1 (ja) * | 2004-08-27 | 2006-03-02 | Konishi Co., Ltd. | 酢酸ビニル樹脂系エマルジョン及びその製造方法 |
| JP2009221461A (ja) * | 2008-02-19 | 2009-10-01 | Kuraray Co Ltd | ビニルアルコール系重合体およびその製造方法 |
| JP2015134704A (ja) | 2013-12-20 | 2015-07-27 | 日本合成化学工業株式会社 | 農業用液状散布剤 |
| JP2016222569A (ja) | 2015-05-29 | 2016-12-28 | 日本合成化学工業株式会社 | 植物用葉面散布液及び植物用葉面散布液の展着方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3673735A4 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019131731A (ja) * | 2018-02-01 | 2019-08-08 | リケンテクノス株式会社 | 防虫機能を有する樹脂組成物及びこれを用いたフィルム並びに壁紙、化粧シート |
| JP7060970B2 (ja) | 2018-02-01 | 2022-04-27 | リケンテクノス株式会社 | 防虫機能を有する樹脂組成物及びこれを用いたフィルム並びに壁紙、化粧シート |
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| JPWO2019039588A1 (ja) | 2020-09-17 |
| BR112020003344B1 (pt) | 2023-09-26 |
| US20200214284A1 (en) | 2020-07-09 |
| US11641853B2 (en) | 2023-05-09 |
| EP3673735A4 (en) | 2021-06-09 |
| CN110944511A (zh) | 2020-03-31 |
| BR112020003344A2 (pt) | 2020-08-18 |
| EP3673735A1 (en) | 2020-07-01 |
| CN110944511B (zh) | 2021-05-04 |
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