Binder for seed coating, composition for seed coating, coated seed, method for producing coated seed, and method for cultivating coated seed

Abstract

A binder (A) for seed coating contains a (meth) acrylamide polymer (a1) that is a reactant of a monomer group containing (meth) acrylamide (a1-1), the content (in terms of solid content) of the component (a1-1) in the total 100 mol% (in terms of solid content) of the monomer group of the component (a1) is 30 mol% or more, the weight average molecular weight of the component (a1) is 100,000-10,000, and the content (in terms of solid content) of the component (a1-1) in the total 100 mol% (in terms of solid content) of the monomer group of the component (a1) is 30 mol% or more. 10,000 or less.

Description

Technical Field

[0001] The present invention relates to a seed coating adhesive, a seed coating composition, coated seeds, a method for producing the coated seeds, and a method for cultivating the coated seeds. Background Art

[0002] With the aging of agricultural practitioners or the decrease in population, labor-saving in farm work has become a problem to be solved. As a means for solving the above-mentioned problem, a seed coating composition with a carrier (clay mineral or inorganic substance, etc.) as the main body is coated on the surface of plant seeds to form spherical coated seeds with seeds as cores. Coated seeds have the following advantages: coating uneven, small, or thin seeds makes their shapes uniform and set to a certain size, so that they are easy to handle. By making coated seeds, not only the ease of operation during sowing and the position stability after sowing become good, but also due to the effects of materials with various functions such as clay minerals or inorganic substances, it can be expected to increase the germination rate or promote growth.

[0003] In order to make the adhesion of the carrier coated on the seeds good, an adhesive is sometimes used. Adhesives are not only used for coated seeds, but also sometimes for film-coated seeds (Patent Document 1). As film-coated seeds, seeds coated with water-soluble polymers into a film state are proposed (Patent Document 2). In film-coated seeds, in addition to the carrier, agents (pesticides, fungicides, etc.) are sometimes included, so an adhesive that strongly combines with both the carrier and the agent is required. In addition, when simply recorded as "coated seeds" in the present disclosure, it is used to include the meaning of both "coated seeds" and "film-coated seeds".

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2007-077118

[0007] Patent Document 2: U.S. Patent No. 3,598,565 Summary of the invention

[0008] The seed coating composition is required to be difficult to peel off during the transportation or sowing process for coated seeds. If the seed coating composition peels off, not only can the above advantages not be obtained, but also the piping or rotating mechanism of the transportation or sowing process may be blocked by the peeled seed coating composition. In addition, when the seed coating composition peels off, the seeds collide with each other or with the container in which the seeds are placed, which may cause damage to the seeds. Therefore, the peeling of the seed coating composition must be suppressed as much as possible. Furthermore, depending on the adhesive used in the seed coating composition, the coating property of the composition on the seeds may become insufficient.

[0009] Therefore, an object of the present invention is to provide a binder for seed coating that can provide a seed coating composition having good strength and excellent coating properties for seeds.

[0010] Another object of the present invention is to provide a seed coating composition having good strength and excellent coating properties for seeds. Further, another object of the present invention is to provide a coated seed having good strength, and a method for producing the coated seed and a method for cultivating the coated seed.

[0011] The inventors have conducted diligent research and found that the above-mentioned problems can be solved by a predetermined seed coating adhesive, a seed coating composition, a coated seed, a method for producing a coated seed, and a method for cultivating the same. In addition, the present invention is made to solve at least a part of the above-mentioned problems and can be implemented as the following forms or application examples.

[0012] (Item 1)

[0013] A binder (A) for seed coating, comprising a (meth)acrylamide polymer (a1) which is a reaction product of a monomer group containing (meth)acrylamide (a1-1),

[0014] The content (solid content conversion) of the component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of the component (a1) is 30 mol% or more,

[0015] The weight average molecular weight of the component (a1) is 100,000 or more and 10,000,000 or less.

[0016] (Item 2)

[0017] The binder for seed coating (A) according to item 1 contains a polymerizable monomer having a sulfonic acid group as a chain transfer agent (a1-2) in the monomer group of the component (a1).

[0018] (Item 3)

[0019] A seed coating composition comprising the seed coating binder (A) according to item 1 or 2 and a carrier (B).

[0020] (Item 4)

[0021] A coated seed coated with the seed coating composition according to item 3.

[0022] (Item 5)

[0023] A method for producing coated seeds, comprising the step of mixing the binder (A) for seed coating according to item 1 or 2 and a carrier (B) with seeds.

[0024] (Item 6)

[0025] A cultivation method comprising the step of sowing the coated seeds according to item 4 into soil. DETAILED DESCRIPTION

[0026] In the entirety of the present disclosure, the range of numerical values ​​such as various physical property values ​​and content can be appropriately set (for example, selected from the values ​​of the upper and lower limits described in the following items). Specifically, with respect to numerical value α, when A1, A2, A3, etc. are exemplified as the lower limit of numerical value α, and B1, B2, B3, etc. are exemplified as the upper limit of numerical value α, as the range of numerical value α, more than A1, more than A2, more than A3, less than B1, less than B2, less than B3, A1-B1, A1-B2, A1-B3, A2-B1, A2-B2, A2-B3, A3-B1, A3-B2, A3-B3, etc. are exemplified. In addition, in the present disclosure, the so-called "to" is used to include the numerical values ​​described before and after it as the lower limit and upper limit.

[0027] “(Meth)acryl” means “at least one selected from the group consisting of acryl and methacryl”. “(Meth)acrylate” means “at least one selected from the group consisting of acrylate and methacrylate”. “(Meth)acryloyl” means “at least one selected from the group consisting of acryloyl and methacryloyl”. The constituent elements or manufacturing method of the present disclosure will be described in detail below.

[0028] [Binder for seed coating (A)]

[0029] The present disclosure relates to a binder (A) for seed coating (also referred to as "component (A)" in the present disclosure), comprising a (meth)acrylamide polymer (a1) which is a reaction product of a monomer group containing (meth)acrylamide (a1-1),

[0030] The content (solid content conversion) of the component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of the component (a1) is 30 mol% or more,

[0031] The weight average molecular weight of the component (a1) is 100,000 or more and 10,000,000 or less.

[0032] The component (A) is a seed coating binder, which contains a (meth)acrylamide polymer (a1) (also referred to as "component (a1)" in the present disclosure) as a reaction product of a monomer group containing (meth)acrylamide (a1-1) (also referred to as "component (a1-1)" in the present disclosure). The content of component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) (solid content conversion) is 30 mol% or more, and the weight average molecular weight of component (a1) is 100,000 or more and 10,000,000 or less.

[0033] <(a1)Component>

[0034] The component (a1) is a reactant of a monomer group including the component (a1-1).

[0035] <(a1-1) Ingredient>

[0036] The component (a1-1) is methacrylamide and / or acrylamide.

[0037] The upper limit of the content (in terms of solid content) of the component (a1-1) in the total amount of 100 mol% (in terms of solid content) of the monomer group of the component (a1) can be exemplified by 100 mol%, 98 mol%, 95 mol%, 90 mol%, 85 mol%, 80 mol%, 75 mol%, 70 mol%, 65 mol%, 60 mol%, 55 mol%, 50 mol%, 45 mol%, 40 mol%, 35 mol%, etc., and the lower limit can be exemplified by 98 mol%, 95 mol%, 90 mol%, 85 mol%, 80 mol%, 75 mol%, 70 mol%, 65 mol%, 60 mol%, 55 mol%, 50 mol%, 45 mol%, 40 mol%, 35 mol%, etc. In one embodiment, in terms of excellent strength of the seed coating composition, the content of component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) is preferably about 30 mol% to 100 mol%, more preferably about 50 mol% to 100 mol%, and further preferably about 50 mol% to 95 mol%.

[0038] <(a1-2) Ingredient>

[0039] In one embodiment, the component (a1) may optionally contain a chain transfer agent (a1-2) (also referred to as "component (a1-2)" in the present disclosure) as a constituent element, i.e., a monomer group. By including the component (a1-2) in the monomer group of the component (a1), the strength of the seed coating composition of the present disclosure is further improved.

[0040] As the component (a1-2), a chain transfer agent having a polymerizable unsaturated group and a chain transfer agent not having a polymerizable unsaturated group can be exemplified. As a chain transfer agent having a polymerizable unsaturated group, one or more selected from a polymerizable monomer having a sulfonic acid group, α-methylstyrene dimer, and 2,4-diphenyl-4-methyl-1-pentene can be exemplified. As a chain transfer agent not having a polymerizable unsaturated group, one or more selected from a compound having a thiol without a polymerizable unsaturated group, an alcohol without a polymerizable unsaturated group, carbon tetrachloride, ethylbenzene, isopropylbenzene, and cumene can be exemplified. In the present disclosure, the so-called polymerizable unsaturated group refers to a carbon-carbon double bond or a carbon-carbon triple bond.

[0041] Examples of the polymerizable monomer having a sulfonic acid group include one or more selected from (meth)allylsulfonic acid and (meth)allylsulfonic acid salts. (Meth)allylsulfonic acid means methallylsulfonic acid and / or allylsulfonic acid.

[0042] Examples of the (meth)allyl sulfonate include one or more selected from sodium (meth)allyl sulfonate, potassium (meth)allyl sulfonate, and ammonium (meth)allyl sulfonate.

[0043] Examples of the compound having no polymerizable unsaturated group but having a thiol group include 2-mercaptoethanol, 1-butanethiol, cyclohexanethiol, n-dodecyl mercaptan, sodium 3-mercapto-1-propanesulfonate, 1-thioglycerol, β-mercaptopropionic acid, 2-ethylhexyl-3-mercaptopropionate, methoxybutyl-β-mercaptopropionate, and one or more selected from stearyl-3-mercaptopropionate.

[0044] Examples of the alcohol having no polymerizable unsaturated group include one or more selected from ethanol, isopropanol, and pentanol.

[0045] In one embodiment, in terms of excellent strength of the seed coating composition, the component (a1-2) is preferably a chain transfer agent having a polymerizable unsaturated group, more preferably a polymerizable monomer having a sulfonic acid group, further more preferably a (methyl) allyl sulfonate, and particularly preferably sodium methyl allyl sulfonate.

[0046] The upper limit of the molecular weight of the component (a1-2) can be exemplified by 1,000, 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, etc., and the lower limit can be exemplified by 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, 10, etc. In one embodiment, the molecular weight of the component (a1-2) is preferably 10 to 1,000. In the present disclosure, when simply referring to the molecular weight, it means a value calculated based on the atomic weight standard.

[0047] The upper limit of the content ratio of the component (a1-1) to the component (a1-2) (molar ratio, solid content conversion, [component (a1-1) / component (a1-2)]) can be exemplified by 100 / 0, 99.99 / 0.01, 99.9 / 0.1, 99.5 / 0.5, 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, etc., and the lower limit can be exemplified by 99.9 / 0.1, 99.5 / 0.5, 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, 50 / 50, etc. In one embodiment, the content ratio (molar ratio, solid content conversion, [(a1-1) component / (a1-2) component]) of the component (a1-1) to the component (a1-2) is preferably about 90 / 10 to 99.99 / 0.01.

[0048] The upper limit of the content (in terms of solid content) of the component (a1-2) in the total amount of 100 mol% (in terms of solid content) of the monomer group of the component (a1) can be 50 mol%, 45 mol%, 40 mol%, 35 mol%, 30 mol%, 25 mol%, 20 mol%, 15 mol%, 10 mol%, 5 mol%, 2 mol%, 1.9 mol%, 1.8 mol%, 1.7 mol%, 1.6 mol%, 1.5 mol%, 1.4 mol%, 1.3 mol%, 1.2 mol%, 1.1 mol%, 1.0 mol%, 0.9 mol%, 0.8 mol%, 0.7 mol%, 0.6 mol%, 0.5 mol%, 0.4 mol%, 0.3 % by mole, 0.2 mol%, 0.1 mol%, 0.05 mol% and the like, and the lower limit can be 45 mol%, 40 mol%, 35 mol%, 30 mol%, 25 mol%, 20 mol%, 15 mol%, 10 mol%, 5 mol%, 2 mol%, 1.9 mol%, 1.8 mol%, 1.7 mol%, 1.6 mol%, 1.5 mol%, 1.4 mol%, 1.3 mol%, 1.2 mol%, 1.1 mol%, 1.0 mol%, 0.9 mol%, 0.8 mol%, 0.7 mol%, 0.6 mol%, 0.5 mol%, 0.4 mol%, 0.3 mol%, 0.2 mol%, 0.1 mol%, 0.05 mol%, 0 mol% and the like. In one embodiment, in terms of excellent strength of the seed coating composition, the content of component (a1-2) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) is preferably about 0 mol% to 50 mol%, more preferably about 0.05 mol% to 10 mol%, and further preferably about 0.05 mol% to 1.5 mol%.

[0049] <(a1-3) Ingredient>

[0050] In one embodiment, the component (a1) may arbitrarily contain a polymerizable monomer (a1-3) having a cationic group (also referred to as "component (a1-3)" in the present disclosure) as a constituent element, i.e., a monomer group. In addition, even if the polymerizable monomer has a cationic group, a monomer that exerts a chain transfer effect is also classified as the component (a1-2).

[0051] As the component (a1-3), one or more selected from the group consisting of a polymerizable monomer having a tertiary amino group and a quaternary ammonium salt of a polymerizable monomer having a tertiary amino group can be exemplified.

[0052] Examples of the polymerizable monomer having a tertiary amino group include one or more selected from N,N-dimethylaminoethyl (meth)acrylate, N,N-diethylaminoethyl (meth)acrylate, N,N-dimethylaminopropyl (meth)acrylamide, and N,N-diethylaminopropyl (meth)acrylamide.

[0053] The quaternary ammonium salt of a polymerizable monomer having a tertiary amino group can be obtained by reacting a polymerizable monomer having a tertiary amino group with a quaternizing agent. Examples of the quaternary ammonium salt include one or more selected from inorganic acid salts and organic acid salts. Examples of the inorganic acid salt include one or more selected from hydrochlorides and sulfates. Examples of the organic acid salt include acetates. Examples of the quaternizing agent include one or more selected from methyl chloride, benzyl chloride, dimethylsulfuric acid, and epichlorohydrin.

[0054] The upper limit of the molecular weight of the component (a1-3) may be 1,000, 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, etc., and the lower limit may be 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, 10, etc. In one embodiment, the molecular weight of the component (a1-3) is preferably 10 to 1,000.

[0055] The upper limit of the content (in terms of solid content) of the component (a1-3) in the total amount of 100 mol% (in terms of solid content) of the monomer group of the component (a1) can be 50 mol%, 45 mol%, 40 mol%, 35 mol%, 30 mol%, 25 mol%, 20 mol%, 19 mol%, 18 mol%, 17 mol%, 16 mol%, 15 mol%, 14 mol%, 13 mol%, 12 mol%, 11 mol%, 10 mol%, 9 mol%, 8 mol%, 7 mol%, 6 mol%, 5 mol%, 4 mol%, 3 mol%, 2 mol%, 1 mol%, 0.5 mol%, 1 % , 0.1 mol %, 0.05 mol %, 0.01 mol % and the like, and the lower limit can be 45 mol %, 40 mol %, 35 mol %, 30 mol %, 25 mol %, 20 mol %, 19 mol %, 18 mol %, 17 mol %, 16 mol %, 15 mol %, 14 mol %, 13 mol %, 12 mol %, 11 mol %, 10 mol %, 9 mol %, 8 mol %, 7 mol %, 6 mol %, 5 mol %, 4 mol %, 3 mol %, 2 mol %, 1 mol %, 0.5 mol %, 0.1 mol %, 0.05 mol %, 0.01 mol %, 0 mol % and the like. In one embodiment, in terms of excellent strength of the seed coating composition, the content of component (a1-3) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) is preferably about 0 mol% to 50 mol%, and more preferably about 2 mol% to 20 mol%.

[0056] <(a1-4) Ingredient>

[0057] In one embodiment, the component (a1) may contain a polymerizable monomer (a1-4) having an anionic group (also referred to as "component (a1-4)" in the present disclosure) as a constituent element, i.e., a monomer group. In addition, even if it is a polymerizable monomer having an anionic group, a monomer having a chain transfer effect is also classified as a component (a1-2).

[0058] As the component (a1-4), there can be exemplified a polymerizable monomer having a carboxyl group, a polymerizable monomer having a sulfonic acid group, and the like.

[0059] Examples of the polymerizable monomer having a carboxyl group include one or more selected from α,β-unsaturated monocarboxylic acids, α,β-unsaturated dicarboxylic acids, alkali metal salts of these acids, and alkaline earth metal salts of these acids.

[0060] Examples of the α,β-unsaturated monocarboxylic acid include one or more selected from (meth)acrylic acid and crotonic acid.

[0061] Examples of the α,β-unsaturated dicarboxylic acid include one or more selected from maleic acid, fumaric acid, itaconic acid, muconic acid, and citraconic acid.

[0062] Examples of the polymerizable monomer having a sulfonic acid group include one or more selected from vinyl sulfonic acid and styrene sulfonic acid.

[0063] The upper limit of the molecular weight of the component (a1-4) is 1,000, 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, etc., and the lower limit is 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, 10, etc. In one embodiment, the molecular weight of the component (a1-4) is preferably 10 to 1,000.

[0064] The upper limit of the content ratio (molar ratio, solid content conversion, [(a1-3) component / (a1-4) component]) of the component (a1-3) to the component (a1-4) can be 100 / 0, 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, 50 / 50, 45 / 55, 40 / 60, 35 / 65, 30 / 70, 25 / 75, 20 / 80, / 80, 15 / 85, 10 / 90, 5 / 95, 1 / 99, etc. The lower limit can be examples of 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, 50 / 50, 45 / 55, 40 / 60, 35 / 65, 30 / 70, 25 / 75, 20 / 80, 15 / 85, 10 / 90, 5 / 95, 1 / 99, 0 / 100, etc.

[0065] The upper limit of the content (in terms of solid content) of the component (a1-4) in the total amount of 100 mol% (in terms of solid content) of the monomer group of the component (a1) can be 55 mol%, 50 mol%, 45 mol%, 40 mol%, 35 mol%, 30 mol%, 25 mol%, 20 mol%, 19 mol%, 18 mol%, 17 mol%, 16 mol%, 15 mol%, 14 mol%, 13 mol%, 12 mol%, 11 mol%, 10 mol%, 9 mol%, 8 mol%, 7 mol%, 6 mol%, 5 mol%, 4 mol%, 3 mol%, 2 mol%, 1 mol%, 0.5 mol%, 1 % , 0.1 mol %, 0.05 mol %, 0.01 mol % and the like, and the lower limit can be exemplified by 50 mol %, 45 mol %, 40 mol %, 35 mol %, 30 mol %, 25 mol %, 20 mol %, 19 mol %, 18 mol %, 17 mol %, 16 mol %, 15 mol %, 14 mol %, 13 mol %, 12 mol %, 11 mol %, 10 mol %, 9 mol %, 8 mol %, 7 mol %, 6 mol %, 5 mol %, 4 mol %, 3 mol %, 2 mol %, 1 mol %, 0.5 mol %, 0.1 mol %, 0.05 mol %, 0.01 mol %, 0 mol % and the like. In one embodiment, in terms of excellent strength of the seed coating composition, the content of component (a1-4) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) is preferably about 0 mol% to 55 mol%, more preferably about 2 mol% to 35 mol%, and further preferably about 2 mol% to 15 mol%.

[0066] <(a1-5) Ingredient>

[0067] In one embodiment, the component (a1) may optionally contain a crosslinkable monomer (a1-5) (also referred to as "component (a1-5)" in the present disclosure) as a constituent element, i.e., a monomer group. Even among crosslinkable monomers, monomers that exert a chain transfer effect are classified as the component (a1-2).

[0068] As the component (a1-5), one or more selected from divinyl ester, polyethylene glycol mono(meth)acrylate, polyethylene glycol di(meth)acrylate, polyalkylene glycol mono(meth)acrylate, N-substituted (meth)acrylamide, N,N-substituted (meth)acrylamide, N,N'-substituted (meth)acrylamide, aromatic polyethylene, allyl (meth)acrylate, and triacryloyl formal can be exemplified.

[0069] Examples of the divinyl ester include one or more selected from divinyl adipate and divinyl sebacate.

[0070] Examples of the polyethylene glycol mono(meth)acrylate include one or more selected from diethylene glycol mono(meth)acrylate, triethylene glycol mono(meth)acrylate, and tetraethylene glycol mono(meth)acrylate.

[0071] Examples of the polyethylene glycol di(meth)acrylate include one or more selected from ethylene glycol di(meth)acrylate and diethylene glycol di(meth)acrylate.

[0072] Examples of the polyalkylene glycol mono(meth)acrylate include one or more selected from polypropylene glycol mono(meth)acrylate, methoxypolyethylene glycol mono(meth)acrylate, polytrimethylene glycol mono(meth)acrylate, polytetramethylene glycol mono(meth)acrylate, and polyethylene glycol propylene glycol mono(meth)acrylate.

[0073] Examples of the N-substituted (meth)acrylamide include one or more selected from N-(1,1-dimethyl-3-oxobutyl)acrylamide, N-isopropylacrylamide, N-methylolacrylamide, N-allyl (meth)acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, and salts thereof.

[0074] Examples of the N,N-substituted (meth)acrylamide include one or more selected from N,N-dimethylacrylamide, N,N-diethylacrylamide, and N,N-diallyl (meth)acrylamide.

[0075] Examples of the N,N′-substituted (meth)acrylamide include one or more selected from N,N′-methylenebis(meth)acrylamide and N,N′-ethylenebis(meth)acrylamide.

[0076] Examples of the aromatic polyethylene include one or more selected from divinylbenzene, 1,3,5-triacryloylhexahydro-1,3,5-triazine, triallyl isocyanurate, triallyl trimellitate, triallylamine, tetramethylolmethane tetraacrylate, and tetraallyl pyromellitate.

[0077] The upper limit of the molecular weight of the component (a1-5) may be 1,000, 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, etc., and the lower limit may be 950, 900, 850, 800, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 50, 25, 10, etc. In one embodiment, the molecular weight of the component (a1-5) is preferably 10 to 1,000.

[0078] The upper limit of the content (in terms of solid content) of the component (a1-5) in the total amount of 100 mol% (in terms of solid content) of the monomer group of the component (a1) can be 5.0 mol%, 4.5 mol%, 4.0 mol%, 3.5 mol%, 3.0 mol%, 2.5 mol%, 2.0 mol%, 1.9 mol%, 1.8 mol%, 1.7 mol%, 1.5 mol%, 1.4 mol%, 1.3 mol%, 1.2 mol%, 1.1 mol%, 1.0 mol%, 0.9 mol%, 0.8 mol%, 0.7 mol%, 0.6 mol%, 0.5 mol%, 0.4 mol%, 0.3 mol%, 0.2 mol%, 0.1 mol% %, 0.05 mol%, 0.01 mol%, 0.005 mol% and the like, and the lower limit can be 4.5 mol%, 4.0 mol%, 3.5 mol%, 3.0 mol%, 2.5 mol%, 2.0 mol%, 1.9 mol%, 1.8 mol%, 1.7 mol%, 1.5 mol%, 1.4 mol%, 1.3 mol%, 1.2 mol%, 1.1 mol%, 1.0 mol%, 0.9 mol%, 0.8 mol%, 0.7 mol%, 0.6 mol%, 0.5 mol%, 0.4 mol%, 0.3 mol%, 0.2 mol%, 0.1 mol%, 0.05 mol%, 0.01 mol%, 0.005 mol%, 0 mol% and the like. In one embodiment, in terms of excellent strength of the seed coating composition, the content of component (a1-5) in the total amount of 100 mol% (solid content conversion) of the monomer group of component (a1) is preferably about 0 mol% to 5.0 mol%, and more preferably about 0.005 mol% to 1.5 mol%.

[0079] The upper limit of the weight average molecular weight of the component (a1) is, for example, 10,000,000, 9,500,000, 9,000,000, 8,500,000, 8,000,000, 7,500,000, 7,0 00,000, 6,500,000, 6,000,000, 5,500,000, 5,000,000, 4,500,000, 4,000,000, 3,500,000, 3,000,00 0、2,500,000、2,000,000、1,500,000、1,000,000、950,000、900,000、850,000、800,000、750,000、700,000、650,000、600,000、550,000、500,000、450,000、400,000、350,000、300,000、250,000、200,000、 150,000, etc., the lower limit may be 9,500,000, 9,000,000, 8,500,000, 8,000,000, 7,500,000, 7,000,000, 6,500,000, 6,000,000, 5,500,000, 5,000,000, 4,500,000, 4,000,000, 3,500,000, 3,000,000, 2,500,000, 2,000 ,000, 1,500,000, 1,000,000, 950,000, 900,000, 850,000, 800,000, 750,000, 700,000, 650,000, 600,000, 550,000, 500,000, 450,000, 400,000, 350,000, 300,000, 250,000, 200,000, 150,000, 100,000, etc. In one embodiment, the weight average molecular weight of the component (a1) is preferably about 100,000 to 5,000,000, for example, because the seed coating composition has excellent strength and excellent coating properties for seeds.

[0080] <Other additives>

[0081] In one embodiment, in the manufacture of (a1) component, various additives can be used arbitrarily. As additives, organic acids (citric acid, succinic acid, oxalic acid, etc.), inorganic acids (hydrochloric acid, sulfuric acid, phosphoric acid, etc.), inorganic bases (sodium hydroxide, potassium hydroxide, calcium hydroxide, etc.), water-soluble aluminum compounds, saltpeter, urea, polysaccharides (starch, etc.), defoamers, antioxidants, polymerization inhibitors, preservatives, etc. can be exemplified. In the manufacture of (a1) component, when additives are used, about the upper limit of the content of additives, relative to all constituent monomers 100% by mass (solid component conversion) of (a1) component, the upper limit can exemplify 10% by mass, 5% by mass, 4% by mass, 3% by mass, 2% by mass, 1% by mass, 0.5% by mass (solid component conversion), etc., and the lower limit can exemplify 5% by mass, 4% by mass, 3% by mass, 2% by mass, 1% by mass, 0.5% by mass, 0.1% by mass (solid component conversion), etc.

[0082] <(a1) Production of component>

[0083] Examples of the polymerization method of the component (a1) include a method of polymerizing the component (a1-1) and, if necessary, the components (a1-2), (a1-3), (a1-4), (a1-5), and additives in a solvent.

[0084] Examples of the polymerization method include a method using only a dropping polymerization method, and a method combining a simultaneous polymerization method (charging a monomer mixed solution all at once) and a dropping polymerization method.

[0085] The dropwise polymerization method is a method of dropping a monomer mixture into a reaction system containing a solvent. As a method using only the dropwise polymerization method, the following methods can be exemplified:

[0086] (1) A method of adding a monomer mixture solution obtained by mixing all monomer components dropwise to a reaction system

[0087] (2) Method of preparing multiple monomer mixtures separately and then simultaneously adding them dropwise to the reaction system

[0088] (3) A method in which a plurality of monomer mixed solutions are prepared separately and then added dropwise to the reaction system in sequence.

[0089] The dropping may be performed continuously, or the dropping may be stopped in the middle of the dropping and then the polymerization may be allowed to proceed for a certain period of time and then the dropping may be restarted.

[0090] As a method of combining the simultaneous polymerization method and the dropping polymerization method, the following method can be exemplified:

[0091] (4) A method of simultaneously polymerizing the monomer mixtures and then mixing the polymers

[0092] (5) After the polymerization of more than one monomer mixture is completed, the remaining monomer mixture is added dropwise

[0093] (6) A method of simultaneously polymerizing one or more monomer mixtures by dropping the remaining monomer mixture and performing polymerization

[0094] (7) A method in which one or more monomer mixtures are dropwise polymerized, and the remaining monomer mixtures are added at once and polymerized simultaneously.

[0095] When preparing a plurality of monomer mixed solutions, it is more preferred to increase the amount of component (a1-2), component (a1-3), component (a1-4) or component (a1-5) in a part of the mixed solution, and react these mixed solutions in sequence, or to add component (a1-2), component (a1-3), component (a1-4) or component (a1-5) to any monomer mixed solution at a certain time point during the polymerization reaction, so that the concentration of component (a1-2), component (a1-3), component (a1-4) or component (a1-5) participating in the reaction is increased. Alternatively, component (a1) may be synthesized in a manner that reduces or eliminates branches in component (a1) without mixing component (a1-2). In the present disclosure, from the viewpoint that the components (A) and (B) are less likely to be separated from the seeds (i.e., the strength of the seed coating composition becomes good), it is preferred to contain the component (a1-2) as a monomer constituting the component (a1), and to use the component (a1) as a branched (meth)acrylamide-based polymer.

[0096] The solvent in the manufacture of component (a1) can be exemplified by water, organic solvents, etc. As the organic solvent, alcohol (methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, isobutanol, n-hexanol, n-octanol, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, diacetone alcohol, etc.), ether (ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, etc.) etc. can be exemplified. In one embodiment, in terms of dissolving components (a1-1) to (a1-5), the solvent in the manufacture of component (a1) can be preferably exemplified by water.

[0097] Examples of the polymerization initiator include persulfates (ammonium persulfate, potassium persulfate, sodium persulfate, etc.), azo compounds (2,2'-azobis(2-amidinopropane) hydrochloride, 2,2'-azobis[2(2-imidazoline-2-yl)propane] hydrochloride, etc.). In terms of fully performing solution polymerization, the polymerization initiator is preferably one or more selected from ammonium persulfate, potassium persulfate, and 2,2'-azobis(2-amidinopropane) hydrochloride. Examples of the method for adding the polymerization initiator include all-at-once addition, batch addition, and continuous dripping. The upper limit of the content (solid content conversion) of the polymerization initiator relative to 100% by mass (solid content conversion) of all the constituent monomers of the component (a1) can be exemplified by 5% by mass, 4% by mass, 3% by mass, 2% by mass, 1% by mass, 0.5% by mass, 0.1% by mass, 0.05% by mass, 0.01% by mass, 0.005% by mass, etc., and the lower limit can be exemplified by 4% by mass, 3% by mass, 2% by mass, 1% by mass, 0.5% by mass, 0.1% by mass, 0.05% by mass, 0.01% by mass, 0.005% by mass, 0.001% by mass, etc. In one embodiment, the content (solid content conversion) of the polymerization initiator relative to 100% by mass (solid content conversion) of all the constituent monomers of the component (a1) can be preferably exemplified by about 0.001% by mass to 5% by mass.

[0098] The polymerization conditions are a temperature of about 50°C to 100°C and a time of about 1 hour to 8 hours.

[0099] In one embodiment, other agents (e.g., other adhesives) other than component (a1) may be arbitrarily contained in component (A) without impairing the effects of the present disclosure. Other adhesives include carboxymethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, methyl cellulose, starch, pullulan, gum arabic, polyvinyl alcohol, gelatin, polyvinyl pyrrolidone, polyacrylic acid, polyethylene glycol, alginic acid, etc.

[0100] When other agents other than component (a1) are added to component (A), the upper limit of the content of other agents other than component (a1) (in terms of solid content) relative to 100% by mass of the total amount of component (A) (in terms of solid content) can be 99% by mass, 95% by mass, 90% by mass, 85% by mass, 80% by mass, 75% by mass, 70% by mass, 65% by mass, 60% by mass, 55% by mass, 50% by mass, 45% by mass, 40% by mass, 35% by mass, 30% by mass, 25% by mass, 20% by mass, 15% by mass, 10% by mass, or more. %. In one embodiment, when other agents other than component (a1) are added to component (A), the content (solid content conversion) of other agents other than component (a1) is preferably about 0.005% to 99% by mass relative to 100% by mass (solid content conversion) of the total amount of component (A) (100% by mass) (solid content conversion).

[0101] The upper limit of the content of the component (a1) in 100% by mass of the total amount of the component (A) (in terms of solid content) can be exemplified by 100% by mass, 99% by mass, 95% by mass, 90% by mass, 85% by mass, 80% by mass, 75% by mass, 70% by mass, 65% by mass, 60% by mass, 55% by mass, 50% by mass, 45% by mass, 40% by mass, 35% by mass, 30% by mass, 25% by mass, 20% by mass, 25% by mass, 30% by mass, 40% by mass, 50% by mass, 60% by mass, 65 ... %. In one embodiment, the content (solid content conversion) of the component (a1) in the total amount 100% by mass (solid content conversion) of the component (A) is preferably about 1% to 100% by mass.

[0102] [Use of the composition containing the component (a1)]

[0103] The present disclosure relates to use of a composition as a binder for seed coating, wherein the composition comprises a component (a1).

[0104] In addition, the present disclosure relates to use of a composition for producing a seed coating composition and comprising the component (a1).

[0105] In one embodiment, the composition containing the component (a1) may arbitrarily contain the additives used in the production of the component (a1), the solvent used in the production of the component (a1), and the other binder, within a range not impairing the effects of the present disclosure.

[0106] [Seed coating composition]

[0107] The present disclosure relates to a seed coating composition including a component (A) and a carrier (B) (also referred to as “component (B)” in the present disclosure).

[0108] The upper limit of the content (solid content conversion) of the component (A) in 100% by mass (solid content conversion) of the seed coating composition can be exemplified by 99% by mass, 95% by mass, 90% by mass, 85% by mass, 80% by mass, 75% by mass, 70% by mass, 65% by mass, 60% by mass, 55% by mass, 50% by mass, 45% by mass, 40% by mass, 35% by mass, 30% by mass, 25% by mass, 20% by mass, 15% by mass, 10% by mass, The lower limit may be 95 mass%, 90 mass%, 85 mass%, 80 mass%, 75 mass%, 70 mass%, 65 mass%, 60 mass%, 55 mass%, 50 mass%, 45 mass%, 40 mass%, 35 mass%, 30 mass%, 25 mass%, 20 mass%, 15 mass%, 10 mass%, 5 mass%, 1 mass%, 0.5 mass%, 0.1 mass%, etc. In one embodiment, the content (solid content conversion) of the component (A) in 100 mass% (solid content conversion) of the seed coating composition is preferably about 0.1 mass% to 99 mass%, more preferably about 0.5 mass% to 10 mass%, in terms of excellent strength of the seed coating composition.

[0109] <(B) Ingredient>

[0110] (B) component is a carrier. In the present disclosure, the carrier can not only play the effect of attaching to the seeds to make the seeds easy to handle, but also play various effects (such as the effect of promoting seed growth, the effect of repelling various animals). As the carrier, one or more selected from minerals (organic minerals, inorganic minerals, etc.), charcoal, and biomaterials can be exemplified.

[0111] Examples of the organic mineral include abelsonite, acetamide, calclacite, caoxite, coskrenite-(Ce), dashkovaite, earlandite, evenkite, fichtelite, flagstaffite, formicaite, glushinskite, guanine, hartite, hoelite, hoganite, humboldtine, idrialite, karpatite, kladnoite, kratochvilite, and levinsonite. -(yttrium) (Levinsonite-(Y)), dihydrated manganese oxalate (Lindbergite), mellite, Minguzzite, Moolooite, Natroxalate, Novgorodovaite, Oxammite, Paceite, Ravatite, Refikite, Simonellite, Stepanovite, Uricite, Urea, Weddellite, Wheatleyite, Whewellite, Zhemchuzhnikovite, and Zugshunstite-(Ce).

[0112] Examples of the inorganic mineral include one or more selected from natural minerals, synthetic minerals, and mixtures containing one or more of these.

[0113] Examples of the natural mineral include one or more selected from rock-forming minerals, contact minerals, ore minerals, and clay minerals.

[0114] Examples of the rock-forming mineral include one or more selected from igneous rocks, sedimentary rocks, and metamorphic rocks.

[0115] Examples of the igneous rock include one or more selected from volcanic rocks and plutonic rocks.

[0116] Examples of the volcanic rock include one or more selected from kimberlite, basalt, andesite, dacite, and rhyolite.

[0117] Examples of the plutonic rock include one or more selected from peridotite, gabbro, diorite, granodiorite, and granite.

[0118] Examples of the granite include one or more selected from quartz, feldspar, mica, hornblende, pyroxene, and olivine.

[0119] Examples of the sedimentary rock include one or more selected from clastic rock, pyroclastic rock, biogenic rock, and evaporite.

[0120] Examples of the clastic rock include one or more selected from conglomerate, breccia, sandstone, mudstone, shale, and argillaceous slate.

[0121] Examples of the pyroclastic rock include one or more selected from the group consisting of volcanic breccia, tuff breccia, lapillistone, lapilli tuff, and tuff.

[0122] Examples of the biogenic rock include one or more selected from limestone, dolomite, white flint, diatomaceous earth, and coal.

[0123] Examples of the evaporite include one or more selected from rock salt and gypsum.

[0124] Examples of the metamorphic rock include one or more selected from contact metamorphic rock, regional metamorphic rock, dynamic metamorphic rock, and impact metamorphic rock.

[0125] Examples of the contact mineral include skarn minerals (garnet, pyroxene, leucite, wollastonite, etc.).

[0126] Examples of the ore mineral include one or more selected from chalcopyrite, galena, and sphalerite.

[0127] Examples of the clay mineral include one or more selected from the group consisting of smectite group, kaolinite group, sericite group, illite group, glauconite group, chlorite group, talc group, zeolite group, and mixed clays.

[0128] Examples of the smectite group include one or more selected from montmorillonite, beidellite, hectorite, saponite, and stevensite.

[0129] Examples of the kaolinite group include kaolinite, dickite, nacrite, halloysite, antigorite, clinochrysotile, orthochrysotile, parachrysotile, lizardite, amesite, kellyite, berthierine, greenalite, nepouite, brindleyite, fraipontite, odinite, cronstedtite, manandonite, and pecoraite.

[0130] Examples of the chlorite group include one or more selected from chamosite, clinochlore, cookeite, orthochamosite, pennantite, and sudoite.

[0131] Examples of the zeolite family include amicite, analcime, barrerite, bellbergite, bikitaite, boggsite, brewsterite, chabazite, chiavennite, clinoptilolite, cowlesite, dachiardite, edingtonite, epistilbite, erionite, and zeolite. erionite), faujasite, ferrierite, garronite, gaultite, gismondine, gmelinite, gobbinsite, gonnardite, goosecreekite, gottardiite, harmome, heulandite, hsianghualite, kalborsite, laumontite, levyne, lovdarite, maricopaite, mazzite, merlinoite, mesolite, montesommaite, mordenite, mutinaite, natrolite, offretite, pahasapaite, partheite, paulingite, sapphire perlialite, phillipsite, pollucite, roggianite, scolecite, stellerite, stilbite, terranovaite, thomsonite, tschernichite, tschortnerite, wairakite, weinebeneite, willhendersonite,and one or more of Yugawara zeolite.

[0132] Examples of mixed clay include bentonite (clay containing montmorillonite as a main component) etc. In the present disclosure, mixed clay refers to clay containing substances other than one type of clay mineral.

[0133] Examples of a mixture containing one or more natural minerals and synthetic minerals include rocks, soil, etc. Rocks are aggregates containing one or more rock-forming minerals. Soil is a mixture of one or more inorganic minerals and one or more selected from organic matter, gas, liquid, and biomaterials.

[0134] Examples of the carbon include coal, peat, lignite, carbide of plant-derived raw materials, carbide of animal-derived raw materials, carbide of waste, and one or more carbons treated chemically and / or physically. Examples of the carbon treated chemically and physically include activated carbon.

[0135] Examples of raw materials of plant origin include forestry raw materials such as felled wood, thinned wood, felled root wood, dead trees, felled wood of park trees or roadside trees, tree pruning scraps, and firewood; shelled materials such as rice husks, wheat husks, and buckwheat husks; straws such as rice straw and wheat straw; fruit shells such as coconut shells, walnut shells, and ivory palm shells; fruit seeds such as peach pits; agricultural raw materials such as rice bran, bagasse, corn cobs, and grasses; wood raw materials such as bark, sawdust, wood chips, wood-based construction materials, and driftwood; and food raw materials such as coffee grounds, tea residues, tofu residues, wine lees, shochu grains, beer lees, and soybean residues.

[0136] Examples of animal-derived raw materials include meat processing residues, livestock manure, bone meal, fishery processing residues, and shell powder.

[0137] Examples of the waste include household garbage, waste paper, pulp, construction waste, furniture waste, papermaking sludge, sewage sludge, and the like.

[0138] As the charcoal, biochar and the like are preferably exemplified from the viewpoint of being environmentally friendly.

[0139] Examples of biochar include white charcoal, black charcoal, bamboo charcoal, powdered charcoal, sawdust charcoal, charcoal derived from livestock manure, charcoal derived from herbs, charcoal derived from rice husks, charcoal derived from straw, charcoal derived from tree fruits, charcoal derived from paper sludge, and charcoal derived from sewage sludge.

[0140] As biological materials, one or more materials selected from plant-derived materials and animal-derived materials can be exemplified. As biological materials, organs, tissues, body fluids (for example, one or more selected from blood, saliva, serum, plasma, urine, synovial fluid, and cerebrospinal fluid) obtained from biological individuals, secretions (selected from natural resins (selected from oleoresins, balsams, rubber resins, resins, rosins, turpentine, rosin, lacquers, and dammars), waxes, and fats), cells, compounds (selected from amino acids, proteins, lipids (selected from lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, calcium stearate and oleic acid), vitamins, minerals, monosaccharides, disaccharides, carbohydrates, and resin acids), and their salts can be exemplified. As other plant-derived materials, one or more selected from sawdust, coconut shells, corn cobs, and tobacco stems can be exemplified. As other animal-derived materials, one or more selected from feces and urine and microorganisms (such as bacteria, viruses, etc.) can be exemplified. In addition, the biomaterial can be selected from one or more of the organs, tissues, body fluids, secretions, cells, compounds, and salts thereof present in an organism, and the method of obtaining the biomaterial is not limited. The biomaterial may not be directly isolated from an organism, for example, when the same material is obtained by chemical synthesis, it is also classified as a biomaterial in the present disclosure.

[0141] In one embodiment, the component (B) is preferably one or more selected from the group consisting of talcs, bentonites, zeolites, diatomaceous earth, and calcium stearate, in terms of excellent strength of the seed coating composition.

[0142] The upper limit of the content (solid content conversion) of the component (B) in 100% by mass (solid content conversion) of the seed coating composition can be 99.9%, 99.5%, 99%, 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%, 20%, 25%, 30%, 3 ... The lower limit may be 99.5%, 99%, 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%, 1%, etc. In one embodiment, the content (solid content conversion) of the component (B) in 100% by mass (solid content conversion) of the seed coating composition is preferably about 1% to 99.9% by mass, more preferably about 90% to 99.5% by mass, in terms of excellent strength of the seed coating composition.

[0143] The upper limit of the content ratio (mass ratio, solid content conversion, [(A) component / (B) component]) of the component (A) to the component (B) can be 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, 50 / 50, 45 / 55, 40 / 60, 35 / 65, 30 / 70, 25 / 75, 20 / 80, 15 / 85, 10 / 90, 5 / 9 5, 1 / 99, 0.5 / 99.5, etc. The lower limit can be examples of 99 / 1, 95 / 5, 90 / 10, 85 / 15, 80 / 20, 75 / 25, 70 / 30, 65 / 35, 60 / 40, 55 / 45, 5 0 / 50, 45 / 55, 40 / 60, 35 / 65, 30 / 70, 25 / 75, 20 / 80, 15 / 85, 10 / 90, 5 / 95, 1 / 99, 0.5 / 99.5, 0.1 / 99.9, etc. In one embodiment, in terms of excellent strength of the seed coating composition, the content ratio of component (A) to component (B) (mass ratio, solid content conversion, [component (A) / component (B)]) is preferably about 0.1 / 99.9 to 99 / 1, and more preferably about 0.5 / 99.5 to 10 / 90.

[0144] <Other additives>

[0145] In one embodiment, the seed coating composition may optionally contain other additives. Other additives include fungicides, bactericides, insecticides, nematicides, molluscicides, acaricides, biocides, disinfectants, rodenticides, herbicides, attractants, (bird) repellents, plant growth control agents (e.g., gibberellins, auxins, cytokinins, etc.), nutrients (e.g., potassium nitrate, magnesium sulfate, iron chelators, etc.), germination stimulants, fillers, solvents, thickeners, colorants, defoamers, preservatives, surfactants, antifreeze agents, etc.

[0146] As the solvent in other additives, the solvent used in the manufacture of component (a1), i.e., water, organic solvent, etc., can be exemplified. As the organic solvent, alcohol (methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, isobutanol, n-hexanol, n-octanol, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, diacetone alcohol, etc.), ether (ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, etc.), etc. can be exemplified. In addition, the solvent used in the manufacture of component (a1) can also be directly used as the solvent of the composition for seed coating.

[0147] The upper limit of the content (solid content conversion) of other additives in 100% by mass (solid content conversion) of the seed coating composition can be exemplified by 20% by mass, 15% by mass, 10% by mass, 5% by mass, 3% by mass, 1% by mass, 0.5% by mass, 0.1% by mass, 0.05% by mass, 0.01% by mass, 0.005% by mass, etc., and the lower limit can be exemplified by 15% by mass, 10% by mass, 5% by mass, 3% by mass, 1% by mass, 0.5% by mass, 0.1% by mass, 0.05% by mass, 0.01% by mass, 0.005% by mass, 0% by mass, etc. In one embodiment, the content (solid content conversion) of other additives in 100% by mass (solid content conversion) of the seed coating composition is preferably about 0% to 20% by mass.

[0148] The upper limit of the content of the solvent in 100% by mass (solid content conversion) of the seed coating composition can be exemplified by 99.9% by mass, 99% by mass, 95% by mass, 90% by mass, 85% by mass, etc., and the lower limit can be exemplified by 99% by mass, 95% by mass, 90% by mass, 85% by mass, 80% by mass, etc. In one embodiment, the content of the solvent in 100% by mass (solid content conversion) of the seed coating composition is preferably about 80% by mass to 99.9% by mass.

[0149] <Method for producing seed coating composition>

[0150] The seed coating composition of the present disclosure is obtained by mixing the component (A) and the component (B) of the present disclosure. Specifically, for example, there can be mentioned a method of mixing them at a temperature in a natural environment (eg, -25°C to 50°C) using various known mixers.

[0151] [Use of the composition comprising the components (A) and (B)]

[0152] The present disclosure relates to use of a composition as a seed coating composition, wherein the composition comprises a component (A) and a component (B).

[0153] In addition, the present disclosure relates to use of a composition for producing a seed coating composition, the composition comprising component (A) and component (B).

[0154] In one embodiment, the composition including the (A) component and the (B) component may arbitrarily contain the above-mentioned other additives within a range not impairing the effects of the present disclosure.

[0155] [Coated seeds]

[0156] The present disclosure relates to a coated seed, which is a seed coated with the seed coating composition of the present disclosure. Examples of the shape of the coated seed include granular and spherical shapes.

[0157] [Method for producing coated seeds]

[0158] The present disclosure relates to a method for producing coated seeds, comprising the step of mixing the components (A) and (B) of the present disclosure with seeds.

[0159] In the method for manufacturing coated seeds, the seed coating adhesive of the present disclosure can be mixed with seeds by existing methods. For example, the seed coating adhesive of the present disclosure can be sprayed, dipped, or brushed with a liquid, powdered, or semi-solid seed coating adhesive of the present disclosure to coat other coated or uncoated seeds. In addition, while the seeds are coated with the seed coating adhesive of the present disclosure, or before and after it, the (B) component can also be mixed. Specifically, the (A) component and the (B) component can be mixed in a container, and then the seeds and the mixture can be mixed in a granulator, etc., or the (A) component, the (B) component and the seeds can be mixed in a granulator, etc. at the same time, or the (A) component and the (B) component can be mixed alternately with respect to the seeds in the granulator, etc., or the (A) component can be mixed with the seeds in the granulator, etc., and then the (B) component can be further mixed, or the (B) component can be mixed with the seeds in the granulator, etc., and then the (A) component can be further mixed. The (B) component can also be mixed with the seeds in the granulator, etc. and then the (A) component can be further mixed. Other additives can be mixed at the appropriate time. As the upper limit of the temperature when the seed coating binder and / or seed coating composition of the present disclosure is mixed with seeds, 50°C, 45°C, 40°C, 35°C, 30°C, 25°C, 20°C, 15°C, 10°C, 5°C, 0°C, -5°C, -10°C, -15°C, -20°C, etc. can be exemplified, and as the lower limit, 45°C, 40°C, 35°C, 30°C, 25°C, 20°C, 15°C, 10°C, 5°C, 0°C, -5°C, -10°C, -15°C, -20°C, -25°C, etc. can be exemplified. In one embodiment, the temperature when the seed coating binder and / or seed coating composition of the present disclosure is mixed with seeds is preferably about -25°C to 50°C. As the upper limit of the time required to mix the seed coating binder and / or seed coating composition of the present disclosure with the seeds, 200 minutes, 150 minutes, 100 minutes, 60 minutes, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes, 1 minute, etc. can be exemplified, and as the lower limit, 150 minutes, 100 minutes, 60 minutes, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes, 1 minute, 0.5 minutes, etc. can be exemplified. In one embodiment, the time required to mix the seed coating binder and / or seed coating composition of the present disclosure with the seeds is preferably 0.5 minutes to 200 minutes.

[0160] Examples of seed coating methods include a method using a granulator (tumbling granulator, stirring granulator, compression granulator, extrusion granulator, crushing granulator, fluidized bed granulator), a method using fluidized bed technology, a method using a fluid coating device based on a spouted bed, a method using other existing well-known devices (roller coater, rotary coater, rotary drying coater, disc coater, continuous processing device, etc.), and the like.

[0161] The upper limit of the amount of the seed coating composition mixed with the seeds can be exemplified by 10,000 (g / 1 kg of seeds), 5,000 (g / 1 kg of seeds), 1,000 (g / 1 kg of seeds), 500 (g / 1 kg of seeds), 100 (g / 1 kg of seeds), 50 (g / 1 kg of seeds), 45 (g / 1 kg of seeds), 40 (g / 1 kg of seeds), 35 (g / 1 kg of seeds), 30 (g / 1 kg of seeds), 25 (g / 1 kg of seeds), 20 (g / 1 kg of seeds), 15 (g / 1 kg of seeds), 10 (g / 1 kg of seeds), 5 (g / 1 kg of seeds), 4 (g / 1 kg of seeds), 3 (g / 1 kg of seeds), 2 (g / 1 kg of seeds), 1 (g / 1 kg of seeds). The lower limit may be 5,000 (g / 1kg of seed), 1,000 (g / 1kg of seed), 500 (g / 1kg of seed), 100 (g / 1kg of seed), 50 (g / 1kg of seed), 45 (g / 1kg of seed), 40 (g / 1kg of seed), 35 (g / 1kg of seed), 30 (g / 1kg of seed), 25 (g / 1kg of seed), 20 (g / 1kg of seed), 15 (g / 1kg of seed), 10 (g / 1kg of seed), 5 (g / 1kg of seed), 4 (g / 1kg of seed), 3 (g / 1kg of seed), 2 (g / 1kg of seed), 1 (g / 1kg of seed), 0.5 (g / 1kg of seed), etc. In one embodiment, the amount of the seed coating composition mixed with the seed is preferably 0.5 to 10,000 (g / 1kg of seed).

[0162] [Cultivation method]

[0163] The present disclosure relates to a cultivation method, comprising the step of sowing the coated seeds of the present disclosure into soil.

[0164] In the cultivation method, the coated seeds can be sown using various known devices. For example, they can be sown on a plug tray using a sowing machine, or they can be sown in a field. In addition, after sowing, they can be cultivated by various known methods according to the type of each seed.

[0165] The following items can be provided by the present disclosure.

[0166] (Project A1)

[0167] A binder (A) for seed coating, comprising a (meth)acrylamide polymer (a1) which is a reaction product of a monomer group containing (meth)acrylamide (a1-1),

[0168] The content (solid content conversion) of the component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of the component (a1) is 30 mol% or more,

[0169] The weight average molecular weight of the component (a1) is 100,000 or more and 10,000,000 or less.

[0170] (Project A2)

[0171] The binder (A) for seed coating according to the above item comprises the component (a1-1) in an amount (solid content conversion) of 50 mol% or more based on 100 mol% (solid content conversion) of the total amount of the monomer group of the component (a1).

[0172] (Item A3)

[0173] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-1) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 30 mol % to 100 mol %.

[0174] (Item A4)

[0175] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-1) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 30 mol % to 95 mol %.

[0176] (Item A5)

[0177] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-1) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 50 mol % to 95 mol %.

[0178] (Item A6)

[0179] The binder (A) for seed coating according to any one of the above items, wherein the weight average molecular weight of the component (a1) is 100,000 to 5,000,000.

[0180] (Item A7)

[0181] The binder (A) for seed coating according to any one of the above items contains a polymerizable monomer having a sulfonic acid group as a chain transfer agent (a1-2) in the monomer group of the component (a1).

[0182] (Item A8)

[0183] The binder for seed coating (A) according to any one of the above items, wherein the polymerizable monomer having a sulfonic acid group as the chain transfer agent (a1-2) comprises a (meth)allyl sulfonate.

[0184] (Item A9)

[0185] The binder for seed coating (A) according to any one of the above items, wherein the polymerizable monomer having a sulfonic acid group as the chain transfer agent (a1-2) comprises sodium (meth)allyl sulfonate.

[0186] (Item A10)

[0187] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-2) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0.05 mol % to 10 mol %.

[0188] (Item A11)

[0189] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-2) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0.05 mol % to 1.5 mol %.

[0190] (Item A12)

[0191] The binder (A) for seed coating according to any one of the above items comprises a polymerizable monomer (a1-3) having a cationic group in the monomer group of the component (a1).

[0192] (Item A13)

[0193] The adhesive (A) for seed coating according to any one of the items, wherein the polymerizable monomer (a1-3) having a cationic group comprises one or more selected from N,N-dimethylaminoethyl (meth)acrylate, N,N-diethylaminoethyl (meth)acrylate, N,N-dimethylaminopropyl (meth)acrylamide, N,N-diethylaminopropyl (meth)acrylamide and quaternary ammonium salts of these monomers.

[0194] (Item A14)

[0195] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-3) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0 mol % to 50 mol %.

[0196] (Item A16)

[0197] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-3) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 2 mol % to 20 mol %.

[0198] (Item A17)

[0199] The binder (A) for seed coating according to any one of the above items comprises a polymerizable monomer (a1-4) having an anionic group in the monomer group of the component (a1).

[0200] (Item A18)

[0201] The adhesive (A) for seed coating according to any one of the items, wherein the polymerizable monomer (a1-4) having an anionic group comprises one or more selected from a polymerizable monomer having a sulfonic acid group, an α,β-unsaturated monocarboxylic acid, an α,β-unsaturated dicarboxylic acid, an alkali metal salt of these acids, and an alkaline earth metal salt of these acids.

[0202] (Item A19)

[0203] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-4) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0 mol % to 55 mol %.

[0204] (Item A20)

[0205] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-4) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 2 mol % to 35 mol %.

[0206] (Item A21)

[0207] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-4) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 2 mol % to 15 mol %.

[0208] (Item A22)

[0209] The binder (A) for seed coating according to any one of the above items comprises a crosslinking monomer (a1-5) in the monomer group of the component (a1).

[0210] (Item A23)

[0211] The binder (A) for seed coating according to any one of the items, wherein the crosslinkable monomer (a1-5) comprises one or more selected from divinyl ester, polyethylene glycol mono(meth)acrylate, polyethylene glycol di(meth)acrylate, polyalkylene glycol mono(meth)acrylate, N-substituted (meth)acrylamide, N,N-substituted (meth)acrylamide, N,N'-substituted (meth)acrylamide, aromatic polyethylene, allyl (meth)acrylate, and triacryloyl formal.

[0212] (Item A24)

[0213] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-5) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0 mol % to 5.0 mol %.

[0214] (Item A25)

[0215] The binder (A) for seed coating according to any of the above items, wherein the content (solid content conversion) of the component (a1-5) in the total amount of 100 mol % (solid content conversion) of the monomer group of the component (a1) is 0.005 mol % to 1.5 mol %.

[0216] (Item A26)

[0217] A use of a composition as a binder for seed coating, the composition comprising the component (a1) according to any one of the above items.

[0218] (Item A27)

[0219] Use of a composition for producing a seed coating composition, the composition comprising the component (a1) according to any one of the above items.

[0220] (Item A28)

[0221] A seed coating composition comprising the seed coating binder (A) according to any one of the above items and a carrier (B).

[0222] (Item A29)

[0223] A seed coating composition comprising the seed coating binder (A) according to any one of the above items and one or more selected from talc, bentonite, zeolite, diatomaceous earth and calcium stearate.

[0224] (Project A30)

[0225] A composition for use as a seed coating composition, the composition comprising the component (A) according to any one of the above items and the component (B) according to any one of the above items.

[0226] (Item A31)

[0227] Use of a composition for producing a seed coating composition, the composition comprising the component (A) according to any one of the above items and the component (B) according to any one of the above items.

[0228] (Item A32)

[0229] A coated seed coated with the seed coating composition according to any one of the above items.

[0230] (Item A33)

[0231] A method for producing coated seeds, comprising the step of mixing the binder (A) for seed coating according to any one of the above items and a carrier (B) with seeds.

[0232] (Item A34)

[0233] A cultivation method comprising the step of sowing the coated seeds according to any one of the above items into soil.

[0234] The seed coating composition and coated seeds using the seed coating binder provided in the present disclosure have good strength, so the seed coating composition is not easily peeled off from the seeds. In addition, the seed coating composition using the seed coating binder provided in the present disclosure has excellent coating properties for seeds.

[0235] When the composition comprising the component (a1) provided in the present disclosure is used as a seed coating binder for a seed coating composition, the strength of the seed coating composition becomes good, and the seed coating composition is not easily peeled off from the seeds. In addition, when the composition comprising the component (a1) provided in the present disclosure is used as a seed coating binder for a seed coating composition, the seed coating composition has excellent coating properties for seeds.

[0236] When the composition comprising the components (A) and (B) provided in the present disclosure is used as a seed coating composition, the strength becomes good and the seed coating composition is not easily peeled off from the seeds. In addition, when the composition comprising the components (A) and (B) provided in the present disclosure is used as a seed coating composition, the coating property for seeds is excellent.

[0237] Example

[0238] Hereinafter, the present invention will be described with reference to Examples, but the present invention is not limited thereto. In addition, "parts" and "%" in Examples and Comparative Examples are based on mass unless otherwise specified.

[0239] <Weight average molecular weight of component (A)>

[0240] The weight average molecular weight of the component (A) is measured by gel permeation chromatography (GPC) under the following measurement conditions.

[0241] Column: Guard column PWXL 1 and GMPWXL 2 manufactured by Tosoh

[0242] Eluent: Phosphate buffer (0.05 mol / L phosphoric acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) + 0.13 mol / L sodium dihydrogen phosphate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) aqueous solution, pH about 2.5)

[0243] Flow rate: 0.8ml / min

[0244] Temperature: 40℃

[0245] Infrared (RI) detector: Shodex RI-101 manufactured by Showa Denko Co., Ltd.

[0246] Multi-Angle Light Scattering (MALS) detector: DAWN HELEOS-II manufactured by WYATT

[0247] Measurement sample: The sample was diluted with the eluent so that the polymer concentration became 0.1% and measured.

[0248] <Production Example A-1: ​​Production of component (A)-1>

[0249] In a reaction apparatus including a stirrer, a thermometer, a reflux cooling tube, a nitrogen inlet tube and two dropping funnels, 581 parts of ion exchange water were placed, and after removing oxygen in the reaction system by nitrogen, the reaction system was heated to 90° C. Into the dropping funnel (1), 648 parts (91.5 mol%) of 50% acrylamide (also referred to as “AM” in the present disclosure), 39 parts (5 mol%) of N,N-dimethylaminoethyl methacrylate (also referred to as “DM” in the present disclosure), 13 parts (2 mol%) of itaconic acid (also referred to as “IA” in the present disclosure), 12 parts (1.5 mol%) of sodium methallyl sulfonate (also referred to as “SMAS” in the present disclosure), 19 parts of 62.5% sulfuric acid and 412 parts of ion exchange water were placed, and the pH was adjusted to around 3.0 with sulfuric acid (monomer mixed solution). Add 0.6 parts of ammonium persulfate and 180 parts of ion exchange water to the dropping funnel (2). Then, add the mixture of ammonium persulfate and ion exchange water dropwise from the dropping funnel (2) over a period of about 3 hours. At the same time, add the monomer mixture in the dropping funnel (1) dropwise at a constant flow rate over a period of about 3 hours. After the addition is completed, add 0.6 parts of ammonium persulfate and 10 parts of ion exchange water and keep warm for 1 hour, then add 90 parts of ion exchange water to obtain an aqueous solution of component (A)-1 with a solid content concentration of 20%. The weight average molecular weight of component (A)-1 is shown in Table 1 below.

[0250] <Production Examples A-2 to A-16, Comparative Production Examples A-1 to A-4: Production of Components (A)-2 to (A)-16, and Components (A)-C1 to (A)-C4>

[0251] According to the composition shown in the following Table 1, synthesis was carried out in the same manner as in Production Example A-1 to obtain aqueous solutions of the component (A) each having a solid content concentration of 20%.

[0252] [Table 1]

[0253]

[0254] The meanings of the terms in Table 1 are as follows.

[0255] AM: Acrylamide

[0256] DM: N,N-dimethylaminoethyl methacrylate

[0257] DML: N,N-dimethylaminoethyl methacrylate benzyl chloride

[0258] IA: itaconic acid

[0259] AA:acrylic acid

[0260] SMAS: Sodium Methyl Allyl Sulfonate

[0261] DMAA: N,N-Dimethylacrylamide

[0262] MBAA: N,N'-Methylenebisacrylamide

[0263] NVF: vinyl formaldehyde

[0264] ': Indicates comparison component.

[0265] Weight average molecular weight (ten thousand): represents the weight average molecular weight of component (A) or component (A)'. "(ten thousand)" represents the number of digits in the numerical value in the table.

[0266] <Production Example B-1: Production of component (B)-1>

[0267] 95 parts by mass of talc (product name "General Talc SSS" (manufactured by Nippon Talc Co., Ltd.)) and 5 parts by mass of calcium stearate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) were added to a beaker and mixed with a spoon for 5 minutes until the appearance became uniform, thereby obtaining component (B)-1.

[0268] <Production Example B-2 to Production Example B-7: Production of Component (B)-2 to Component (B)-7>

[0269] The compositions shown in the following table were mixed in the same manner as in Production Example B-1.

[0270] [Table 2]

[0271]

[0272] The meanings of the terms in Table 2 are as follows.

[0273] Talc: Product name "General Talc SSS" (manufactured by Nippon Talc Co., Ltd.)

[0274] Bentonite: Product name "Super Hogao" (manufactured by Hojun Co., Ltd.)

[0275] Zeolite: Product name "Izukalite" (manufactured by Izuka Co., Ltd.)

[0276] Diatomaceous earth: Product name: "Diatomaceous earth" (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., practical grade for chemical use)

[0277] SA-Ca: Calcium stearate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0278] <Example 1: Preparation of coated seeds (1)>

[0279] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0280] (α) The aqueous solution of the component (A)-1 obtained in Production Example A-1 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 100 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0281] (β) 100 parts of the component (B)-1 were added gradually in small amounts to a pan-type granulator.

[0282] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0283] <Example 8 to Example 16, Comparative Example 1 to Comparative Example 4: Preparation of coated seeds (8) to (16), and coated seeds (C1) to (C4)>

[0284] Coated seeds (8) to (16) and coated seeds (C1) to (C4) were prepared in the same manner as in Example 1 except that the component (A) was changed to the composition shown in the following table.

[0285] <Example 2: Preparation of coated seeds (2)>

[0286] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0287] (α) The aqueous solution of the component (A)-2 obtained in Production Example A-2 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 150 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0288] (β) 100 parts of the component (B)-2 were added gradually in small amounts to a pan granulator.

[0289] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0290] <Example 3: Preparation of coated seeds (3)>

[0291] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0292] (α) The aqueous solution of the component (A)-3 obtained in Production Example A-3 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 200 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0293] (β) 100 parts of the component (B)-3 were added gradually in small amounts to a pan-type granulator.

[0294] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0295] <Example 4: Preparation of coated seeds (4)>

[0296] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0297] (α) The aqueous solution of the component (A)-4 obtained in Production Example A-4 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 150 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0298] (β) 100 parts of the component (B)-4 were added gradually in small amounts to a pan granulator.

[0299] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0300] <Example 5: Preparation of coated seeds (5)>

[0301] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0302] (α) The aqueous solution of the component (A)-5 obtained in Production Example A-5 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 100 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0303] (β) 100 parts of the component (B)-5 were added gradually in small amounts to a pan granulator.

[0304] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0305] <Example 6: Preparation of coated seeds (6)>

[0306] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0307] (α) The aqueous solution of the component (A)-6 obtained in Production Example A-6 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 150 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0308] (β) 100 parts of the component (B)-6 were added gradually in small amounts to a pan granulator.

[0309] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0310] <Example 7: Preparation of coated seeds (7)>

[0311] 5 g of onion seeds (product name "Onion Red Leaf No. 3", manufactured by Qibao Co., Ltd.) were placed in a disc granulator (product name "Disc Granulator PZ-01R", manufactured by Asone Co., Ltd.). Then, after the following treatment (α), the treatment (β) was repeated until the seeds reached a predetermined size. The angle and rotation speed of the granulator were basically set to 45 degrees and 80 rpm, and were appropriately adjusted while observing the coating condition.

[0312] (α) The aqueous solution of the component (A)-7 obtained in Production Example A-7 was diluted with ion-exchanged water to prepare an aqueous solution having a solid content concentration of 1%. Next, 150 parts of the aqueous solution was sprayed onto seeds using a sprayer.

[0313] (β) 100 parts of the component (B)-7 were added gradually in small amounts to a pan-type granulator.

[0314] The coated seeds of 3 mm to 4 mm were selected and dried at room temperature (23° C.). The moisture content of the dried coated seeds was measured using an infrared moisture meter, and the result was less than 8%. The coated seeds were prepared by the method until more than 10 g of coated seeds were obtained.

[0315] <Performance evaluation (1): Coating properties>

[0316] When each of the coated seeds (1) to (16) and (C1) to (C4) was prepared, the coating properties of the seed coating composition were evaluated according to the following criteria.

[0317] ○: The seed coating composition can be coated on seeds.

[0318] ×: The seed coating composition could not be coated on the seeds due to high viscosity, difficulty in spraying, agglomeration of the carrier, or non-adhesion of the coating composition to the seeds.

[0319] <Performance evaluation (2): Strength>

[0320] A 5 kg test tool with a silicone rubber surface was placed on a steel plate with the silicone rubber surface touching the coated seeds arranged on each of the coated seeds (1) to (16) and (C1) to (C4) at 10 g each, and the tool was rotated 90 degrees. This operation was repeated 10 times, and then hand-sieved using a sieve with a mesh size of 2.8 mm to determine the mass of the seed coating binder and / or carrier after peeling relative to the mass of the initial coated seeds. Evaluation was performed based on the ratio of peeling off according to the following criteria.

[0321] ○: 5% or less

[0322] △: More than 5% and less than 10%

[0323] ×: more than 10%

[0324] [Table 3]

[0325]

Claims

1. A seed coating binder (A), comprising a (meth)acrylamide polymer (a1) which is a reaction product of a monomer group containing (meth)acrylamide (a1-1), The content (solid content conversion) of the component (a1-1) in the total amount of 100 mol% (solid content conversion) of the monomer group of the component (a1) is 30 mol% or more, The weight average molecular weight of the component (a1) is 100,000 or more and 10,000,000 or less. 2 . The binder (A) for seed coating according to claim 1 , wherein the monomer group of the component (a1) contains a polymerizable monomer having a sulfonic acid group as a chain transfer agent (a1-2).

3. A seed coating composition comprising the seed coating binder (A) according to claim 1 or 2 and a carrier (B).

4. A coated seed coated with the seed coating composition according to claim 3.

5. A method for producing coated seeds, comprising the step of mixing the binder (A) for seed coating according to claim 1 or 2 and a carrier (B) with seeds.

6. A cultivation method comprising the step of sowing the coated seeds according to claim 4 into soil.

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