JPH09227302A - Agrochemical aqueous suspension composition in polymethylpentene container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agrochemical aqueous suspension composition in a polymethylpontone container capable of suppressing an adhered residue to the inside surface of the polymethylpenetene container. SOLUTION: This agrochemical aqueous suspension composition in a polymethylpentene container is obtained by blending (1) a component selected from a group consisting of a polyoxyethylenealkylphenyl ether having 20-60 molar number of ethylene oxide adduct, a polyoxyethylene aromatic poly nuclear ether having 20-60 molar number of ethylene oxide adduct and a salt of sulfate, sulfonate and phosphate of them and/or (2) a non reactive silicone oil with the agrochemical aqueous suspension composition filled in the polymethylpenetene container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pesticidal aqueous suspension composition in which residual adhesion to the inner surface of a poly container is suppressed, and more particularly to a pesticide aqueous suspension composition in a polymethylpentene container.

[0002]

2. Description of the Related Art Agricultural pesticide aqueous suspension compositions usually contain solid pesticidal particle components having an average particle size of 0.1 to 5 .mu.m, preferably 0.5 to 3 .mu.m, in an amount of 0.5 to 70% by weight, and surfactants 1 to 1. 10% by weight,
Inorganic and / or organic thickener 0.05-5% by weight, antifreeze 3-10% by weight, preservative 0.1-0.5% by weight, antifoaming agent 0.
1-0.5% by weight, and if necessary, a suspension formulation of a fine grain pesticide in water, which contains auxiliary additives such as a crystal growth inhibitor, a specific gravity adjusting agent, a decomposition inhibitor, a coloring agent, and a pH adjusting agent, and water. is there. This pesticidal aqueous suspension composition has a tendency to increase the solvent odor, flammability, and formulation toxicity found in emulsions, etc., and powdering / wetting agents, etc., which causes dusting during use, inconvenience of weighing, In recent years, its usefulness has been recognized as an agent for improving / improving the solidification / caking phenomenon during storage and the tendency of the drug efficacy to decrease,
It is being used a lot. These pesticide aqueous suspension compositions generally contain a large amount of surfactants and thickeners, and therefore have a viscosity of 20%.
0-3000cst, surface tension 30-45dyn / cm, specific gravity
Shows physical properties of 1.1 to 1.5. On the other hand, the pesticide aqueous suspension composition is injection-molded or hollow-molded from a resin such as polyethylene (hereinafter referred to as PE), polypropylene (hereinafter referred to as PP), polyethylene terephthalate (hereinafter referred to as PET) to 100 ml to 10 ml. It is filled in containers of various sizes such as liters and is commercially available as a product.

When the pesticidal aqueous suspension composition is actually used, it is shaken well in a container and then 1000-400.
It is diluted with water at a ratio of about 0 to prepare a spray solution, or it is applied as it is to the herbicide, insecticide, sterilization or plant growth control with various spraying devices as it is without dilution. However, since the pesticide aqueous suspension composition generally remains on the inner surface of the plastic container without adhering to the inner surface of the plastic container and flowing down or peeling, the pesticide aqueous suspension composition filled in the plastic container is generally used. There is a problem that it is not possible to utilize the entire amount of. In addition, from the viewpoint of safety, it is not possible to discard the poly container in which the pesticide aqueous suspension composition remains inside, so it is not possible to know the remaining amount that can be used, or it is necessary to repeatedly wash the poly container. There is a problem such as there. In addition, when the inside of the plastic container is dried and solidified, it becomes difficult to take it out the next time it is used, and the taken out product also has extremely poor dissolution and dispersion in water. However, various problems have occurred, such as blocking the nozzle to hinder the spraying work. Recently, some attempts have been made to solve this problem. First, there is a method of reducing the viscosity of the pesticide aqueous suspension composition to reduce the residual adhesion amount. However, these methods do not always sufficiently solve the problem of residual adhesion and may impair the long-term storage stability of the pesticide aqueous suspension composition. On the other hand, the method of coating the inner surface of the poly container with highly water-repellent silane or fluororesin is PE, PP, PET.
Since such a container material does not have a reactive group, it is not possible to form a strong water-repellent coating, and the cost required for coating is too large to be practical.

Recently, the use of a multi-layer bottle having a relatively strong hydrophobicity of polymethylpentene resin (PMP) as a container material has been seen (JP-A-7-52935). In this technique, since PMP is used on the inner surface of the container, the problem of adhesion of the pesticide aqueous suspension composition on the wall is slightly improved, but the degree of improvement is not always sufficient. There is. In particular, since it takes a relatively long time for the agricultural chemicals aqueous suspension composition to peel off, it is not sufficient as a practical containerized agricultural chemicals aqueous suspension composition having excellent peelability.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention provides a pesticidal aqueous suspension in a polymethylpentene container in which the releasability of the pesticide aqueous suspension composition in a polymethylpentene container from the inner surface of the polymethylpentene container is significantly improved. It is intended to provide a turbid composition.

[0006]

Means for Solving the Problems As a result of intensive studies to achieve the above-mentioned object, the present inventor has found that the following components (1) and (2) are added to an agrochemical suspension composition in a polymethylpentene container. ): (1) Polyoxyethylene (POE) alkylphenyl ether having an ethylene oxide addition mole number of 20 to 60, polyoxyethylene aromatic polynuclear ether having an ethylene oxide addition mole number of 20 to 60, and
It has been found that the above object can be easily achieved by blending one or both of a component selected from the group consisting of salts of these sulfates, sulfonates and phosphates, and (2) non-reactive silicone oil,
The present invention has been reached.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The polymethylpentene that constitutes the container for polymethylpentene used in the present invention is a conventionally known material and does not have a polar group in its molecular structure. Therefore, it does not absorb water and has a small surface activity. Therefore, even if the strongly tacky and strongly adherent material comes into contact with the surface of polymethylpentene,
It is easily repelled and such materials are difficult to stick to. Polymethylpentene is obtained by polymerizing methylpentene. As the methyl pentene, for example, 2-methyl pentene, 3-methyl pentene and the like are used, but industrially, 4-methyl pentene-1 obtained by dimerization of propylene is usually used. The polymethylpentene container may be composed solely of polymethylpentene, and may also contain other polymers, such as PE, if desired.
Alternatively, PP, PET or the like may be blended. When compounded, it is usually not more than 50% by weight, more preferably not more than 20% by weight, particularly preferably not including such other polymer at all, based on the total weight of polymethylpentene and the other polymer to be added. It is preferable that the container is made of only polymethylpentene. Polymethylpentene containers are manufactured from polymethylpentene by injection molding or blow molding techniques. Polymethylpentene containers are commercially available as containers of varying volume, generally 10 ml to 10 liters. Further, the polymethylpentene container, as long as the layer constituting the container inner surface that comes into contact with the pesticide aqueous suspension composition is prepared from polymethylpentene, as long as it is laminated with a layer made of other plastic on the container exterior You may.

In the present invention, the pesticide used in the pesticide aqueous suspension composition contained in the polymethylpentene container is
Various pesticides can be used as long as they can form an aqueous suspension. Specific examples of pesticides include insecticides, planting agents, fungicides, nematicides, acaricides, and herbicides. Specifically, insecticides, acaricides and nematicides include, for example, bifenthrin, tralomethrin, permethrin, diflubenzuron, chlorfluazuron, carbaryl, thiodicarb, imidacloprid, fenbutatin oxide, clofentezine, pyridaben, fenpyroximate. , Pyrimidiphene, oxamyl and other active ingredients. As a fungicide,
Examples thereof include active ingredients such as 8-hydroxyquinoline copper, sulfur, bromuconazole, hexaconazole, ipconazole, iprodione, fluazinam, mepronil, flutolanil, oxolinic acid, befrazoate, flacide and penciclone. Examples of herbicides include quinoclamin, bensulfuron-methyl, pyrazosulfuron-ethyl, imazosulfuron, pyributicarb,
Examples include active ingredients such as dimuron, bromobutide, tenilchlor, metolachlor, pyrazoxifene, benzophenap, quizalofop-ethyl, atrazine, bifenox, pendimethalin and the like. Furthermore, examples of the plant-control agent include active ingredients such as inabenfide, uniconazole, and paclobutrazol.

The POE alkylphenyl ether used in the present invention has an ethylene oxide (EO) addition mole number of 20 to 60, preferably 25 to 55. When the number of added moles is 20 or more, the releasability of the pesticide aqueous suspension composition from a plastic container is significantly improved. On the other hand, the number of added moles is 6
When it is within 0, the viscosity of the surfactant is small and the handleability is excellent, and the long-term storage stability of the pesticide aqueous suspension composition is improved (precipitation, separation, caking, etc. hardly occur). As long as ethylene oxide is in the above range,
It may contain a small amount of added moles of propylene oxide arranged in a block or random manner. The number of moles of propylene oxide added is 20 times the number of moles of EO added.
% Or less, preferably 10% or less. The alkyl group of the phenyl group in the POE alkyl phenyl ether may be linear or branched and may be used without particular limitation. As a preferable alkyl group,
An alkyl group having 6 to 18 carbon atoms, preferably 8 to 12 carbon atoms can be used. Examples of preferable alkyl groups include alkyl groups such as octyl group, nonyl group and dodecyl group. In the polyoxyethylene aromatic polynuclear cyclic ether used in the present invention, the number of moles of ethylene oxide (EO) addition is 20 to 60, preferably 25 to 5 as in the above.
5 The aromatic polynuclear ring is a ring in which a plurality of aromatic rings such as a benzene ring and a naphthyl ring are bonded. The aromatic polynuclear ring is preferably one in which each aromatic ring is connected to each other by a single bond. Examples of the aromatic polynuclear ring include a di- or tristyryl (or di- or tribenzyl) phenyl or phenylphenyl group.

In the present invention, further, a sulfate, sulfonate or phosphate salt of the above POE alkyl phenyl ether or POE aromatic polynuclear cyclic ether,
For example, sodium, potassium, ammonium or di- or triethanolamine salts can be used. The above surfactants can be used alone or as a mixture. The surfactant is used usually in an amount of 1 to 10% by weight, preferably 2 to 7% by weight, based on the weight of the pesticide aqueous suspension composition. In the present invention, other surfactants that have been conventionally used in pesticide aqueous suspension compositions may be used in combination with the above surfactants. Examples of such a surfactant include a nonionic surfactant and an anionic surfactant.
Specific examples of such other surfactants include nonionic surfactants such as POE alkyl ethers, POE fatty acid esters, and POE resin acid esters.
POE mono (or di) alkyl phenyl ether and its formalin condensate, POE sorbitan (or sucrose) fatty acid ester, sorbitan (or sucrose) fatty acid ester, POE diphenyl ether, PEG, polyoxyethylene polyoxypropylene block polymer, POE
Polyacetylene ether, polyoxyalkylene polysiloxane and the like, and examples of the anionic surfactant include alkyl sulfate, alkylbenzene sulfonate, alkane sulfonate, α-olefin sulfonate, alkylnaphthalene sulfonate and its formalin condensate, naphthalene sulfonate formalin condensate, Phenol (or cresol) sulphonate formalin condensate, dialkyl sulfosuccinate, lignin sulphonate, fatty acid taurate, fatty acid sarcosinate, POE alkyl ether sulphate (or sulphonate or phosphate) salt, sulphate (or sulphonate) of POE alkyl phenyl ether and its formalin condensate Or phosphate) salt, POE diphenyl ether sulphate Preparative (or sulfonate or phosphate) salts, POE polyoxypropylene block polymer sulfate (or sulfonate or phosphate) can be exemplified salts. Specifically, the amount used is usually 5% by weight or less, preferably 1 to 2% by weight.

From the viewpoint of its chemical structure, the surfactant used in the present invention is included in the surfactants conventionally used for agricultural chemical aqueous suspensions. The number of moles of ethylene oxide added in POE is 20
It has been found that by limiting the amount to 60, the releasability of the pesticide aqueous suspension composition from the polymethylpentene container is significantly increased. The surfactant used in the present invention may be used in combination with an inorganic or organic thickener, if necessary, in order to ensure long-term storage stability of the pesticide aqueous suspension composition of the present invention. As an organic thickener, guar gum, locust bean gum, xanthan gum, rhamsan gum, welan gum, tara gum, carrageenan,
Natural water-soluble polymers such as gum arabic, alginic acid, pectin, gelatin, casein and glue, and methyl cellulose, carboxymethyl (or ethyl) cellulose, hydroxyethyl (or propyl) cellulose, carboxymethyl (or ethyl or propyl) starch, etc. Semi-synthetic water-soluble polymer substances, synthetic water-soluble polymer substances such as PVA, PVP, PMA, PA, and polyvinyl methacrylate can be appropriately used. Examples of the inorganic thickener include smectite clay minerals (montmorillonite, saponite, hectorite, beidellite, nontronite, bentonite, etc.), synthetic silicates, aluminosilicates (zeolite, mordenite, faujasite, ferrite). Etc.) can be similarly mentioned.

The pesticidal aqueous suspension composition of the present invention may optionally contain various conventionally used components. For example, as an antifreezing agent, for example, lower alcohol, ethylene glycol, propylene glycol, glycerin, diethylene glycol, etc., and an inorganic salt can be used. As an antifoaming agent, fatty acid, silicone emulsion, silica, etc. can be used, and a preservative. As
Sorbic acid, dehydroacetic acid, parabens, thiabendazole, BIT, thiazolone and the like can be used.
In addition to these, auxiliary additives such as a crystal growth inhibitor, a caking inhibitor, a pH adjuster, a decomposition inhibitor, a specific gravity adjuster, and a colorant can be used in the same manner as in the conventional case. When actually using the pesticide aqueous suspension composition, consider the physicochemical characteristics (water solubility, melting point, chemical stability, pulverizability, etc.) and content of the solid pesticides contained in it. Then, the type and content of the constituent components are selected, but the pesticidal aqueous suspension composition according to the present invention can be produced according to these conventional methods. Therefore, the present invention includes all herbicides as pesticides, fungicides, insecticides, plant-control agents and the like as long as they can be produced as an agrochemical suspension composition. There is no restriction that it applies only to certain pesticides, or not to particular pesticides.

Generally speaking, a pesticide that has been coarsely pulverized by dry pulverization to an average particle size of several tens of μm or less in advance,
A mixture of a surfactant, a defoaming agent, and water is added to a bead mill (for example, sand grinder, Viscomill (made by AIMEX Co., Ltd.), mighty mill, super mill (made by Inoue Seisakusho), attritor (made by Mitsui Miike Seisakusho), Dino Mill (manufactured by WA Bakofen), Pearl Mill (Ashizawa Co., Ltd.), Dreisberge Bead Mill (Japan Eirich Co., Ltd.), etc., and beads 60-95 with a particle size of 0.6-1.0 mm. Rotation speed 500 to 3000 with%
Pulverize for 0.5 to 1 hour at rpm, 0.1 to 5 μm or less,
It is preferably taken out as an average particle size of 0.5 to 3 μm. In addition to this, an inorganic or organic thickener, an antifreezing agent, a preservative, and other premixes are prepared in advance,
A typical method is to add and mix to a pulverized liquid to prepare an agricultural chemical aqueous suspension composition, but the method is not necessarily limited to this method, and it may be devised depending on the purpose and conditions.
May be changed. The general composition and physical properties of the pesticide aqueous suspension composition thus obtained have already been described. The non-reactive silicone oil used in the present invention can be used without particular limitation as long as it is a silicone oil having no reactive functional group and having a strong hydrophobic group. Specific examples of the non-reactive silicone oil include dimethyl silicone oil, cyclic dimethyl silicone oil, methylphenyl silicone oil, methylstyryl modified silicone oil, alkyl modified silicone oil, higher alkoxy modified silicone oil, and higher fatty acid modified silicone. Examples thereof include oil and fluorine-modified silicone oil. These non-reactive silicone oils are composed of a non-reactive dimethylpolysiloxane skeleton, and include those having a hydrophobic modifying group. The physical properties, especially the viscosity, of these non-reactive silicone oils are related to the improvement of peelability to some extent. Generally, the smaller the viscosity is, the better the peelability improving effect is.
It is preferably below 2000 cst.

The amount of the non-reactive silicone oil used is not particularly limited, but is usually 0.01% in the pesticide aqueous suspension composition.
~ 5% by weight, preferably 0.05-2% by weight. These non-reactive silicone oils are generally used in the above-mentioned method for producing an aqueous pesticide suspension composition, during pulverization by a bead mill, in the process of mixing a premix containing a thickener, and in addition to the final suspension agent. Even while mixing
It suffices to add and mix sufficiently homogeneously. The added non-reactive silicone oil is finely dispersed in the suspending agent by the surfactant, but when it contacts the inner surface of the hydrophobic polymethylpentene container, the surface of the inner surface of the container is promptly removed from the liquid. It is considered that they gather together in the above and exhibit a peeling property.
In the present invention, by filling a polymethylpentene container with a pesticide aqueous suspension composition containing a specific surfactant and / or a non-reactive silicone oil, an excellent pesticide aqueous solution that does not remain attached to the inner surface of the poly container Suspension compositions can be prepared. In the present invention, the combination of the specific surfactant and / or the non-reactive silicone oil depends on the type and content of the agricultural chemical, the type and content of the auxiliary component such as the surfactant, and the production cost. It can be appropriately adopted after considering the above.

The pesticidal aqueous suspension composition according to the present invention produced in this manner is usually suppressed from sedimentation, particle growth, caking, etc. during long-term storage at a temperature of -5 ° C to 40 ° C. It is stable. The agricultural chemical aqueous suspension composition of the present invention can be used by a conventional method without diluting with water or by diluting with water.
In use, the pesticidal aqueous suspension composition does not eventually flow down the inner wall of the container and eventually remain within about 1-2 minutes, despite its relatively high viscosity. Therefore, it becomes easy to judge the amount used and the amount remaining, and if they are reversed, the entire amount of the agricultural chemical aqueous suspension composition can be used. Furthermore, the dry debris of the remaining deposits on the inner surface of the plastic container will not be mixed into the spray liquid to block the spray nozzle. Further, in the case of a hurry, if tap water or the like is put into the plastic container for cleaning without waiting for it to flow down, the plastic container can be easily cleaned due to its excellent peeling property from the inner surface of the plastic container. Moreover, the used plastic container can be easily discarded.

[0016]

The present invention will be described in more detail below with reference to Examples and Comparative Examples. 1. Preparation of Agricultural Aqueous Suspension Composition Samples 1-2: Insecticide bifenthrin (97% active ingredient, average particle size 9.3 μm (hereinafter referred to as bifenthrin fine powder)) ground by jet mill, 22 g, POE (25 mol) tristyryl Phenyl ether sulphate NH ₄ salt 11 g, silicone emulsion (antifoaming agent) 0.5 g and water 166 g were mixed in advance with a low speed homogenizer, then charged into a grinding vessel of a sand grinder (IMEX, 1/6 G), and hard glass beads 400 ml ( A particle size of 1 mm) was added, and the mixture was crushed for 40 minutes at 2000 rpm while passing cooling water, and then the beads were separated to prepare a crushed liquid. On the other hand, in the same manner as above, except that 0.5 g (0.2% by weight) of dimethyl silicone oil (non-reactive silicone oil, TSF451 manufactured by Toshiba Silicon Co., viscosity: 100 cst) was added to prepare a grinding liquid. . Preliminarily adjusted xanthan gum aqueous solution (2.0% xanthan gum, 50% propylene glycol, 2% Proxel GXL, 46% water) 2
2 g was added dropwise and mixed uniformly to obtain 205 g of each of Samples 1 and 2 containing 10% of bifenthrin. Samples 3 to 4 Samples 3 to 4 were prepared in the same manner as in Samples 1 and 2 except that the surfactant was replaced with POE (14 mol) tristyrylphenyl ether sulfate NH ₄ salt. Sample 5-6 Bifenthrin fine powder 36 g, POE (42 mol) dibenzyl phenyl phenyl ether sulfonate Na salt 1
2 g, 0.2 g of a silicone emulsion (antifoaming agent) and 151 g of water were mixed in advance and wet-milled in the same manner as in Example 1, and then the beads were separated to prepare a pulverized liquid. on the other hand,
Same as above, except for methylphenyl silicone oil (non-reactive silicone oil, Toshiba Silicon TS
F437, viscosity: 22 cst) 1 g (0.5 wt%) was added to prepare a grinding liquid. Welan gum aqueous solution (welan gum 2.5%, ethylene glycol 55%, ethylparaben 2%, water 40.5
%) 20 g of the mixture was mixed uniformly so that 19% of each of Samples 5 to 6 containing 17% of bifenthrin was added.
8 g were obtained. Samples 7-8 except that the surfactant was replaced with POE (17 mol) dibenzylphenyl phenyl ether sulfonate Na salt.
Samples 7-8 were manufactured similarly to the case of samples 5-6. Samples 9-10 Bifenthrin fine powder 62 g, POE (35 mol) nonylphenyl ether phosphate triethanolamine salt 8 g, lignin sulfonate Na salt 6 g, silicone emulsion (antifoaming agent) 0.5 g and water (123 g) are homogenized in advance. After mixing as described above, wet grinding was performed in the same manner as in Example 1, and then the beads were separated to prepare a grinding liquid. On the other hand, 2 g (1% by weight) of dimethyl silicone oil (non-reactive silicone oil, KF96-100 manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 100 cst) was added in the same manner as above to prepare a pulverized liquid. Separately prepared rumzan gum aqueous solution (ramzan gum 2.
5%, propylene glycol 55%, biotack 2%
25 g of water and 40.5% of water) and uniformly mixed to prepare 2 samples 9 to 10 containing 30% of bifenthrin.
00g was obtained. Samples 11 to 12 Similar to Samples 9 to 10 except that POE (15 mol) nonylphenyl ether phosphate triethanolamine salt was used instead of POE (35 mol) nonylphenyl ether phosphate triethanolamine salt. Samples 11-12 were manufactured. Samples 13 to 14: 8-hydroxyquinoline copper (96% active ingredient, average particle size 6.4 μm (hereinafter referred to as 8-hydroxyquinoline copper fine powder)) 370 g roughly crushed with a hammer mill, POE
(50 mol) tribenzyl phenyl phenyl ether 7
0 g, naphthalene sulfonate formalin condensate Na salt 40 g, silicone emulsion (antifoaming agent) 2 g and water 523 g were uniformly mixed in advance, and then Dynomill (W.
A. 720 ml of hard glass beads (average particle size 1)
mm) and cooling water through 3000 rpm, 50 ml
The powder was crushed for 60 minutes at a speed of 1 / min to prepare a crushed liquid. On the other hand, in the same manner as above, except that cyclic dimethyl silicone oil (non-reactive silicone oil, KF99 manufactured by Shin-Etsu Chemical Co., Ltd.
5, viscosity: 4 cst) 2 g (0.2% by weight) was added to prepare a grinding liquid. 95 g of xanthan gum aqueous solution was added dropwise to these pulverized liquids and mixed until uniform, to obtain 1060 g of each of Samples 13 to 14 containing 35% of 8-hydroxyquinoline copper. Samples 15 to 16 Samples 13 to 1 except that POE (16 mol) tribenzylphenyl phenyl ether was used instead of POE (50 mol) tribenzyl phenyl phenyl ether.
Samples 15 to 16 were manufactured in the same manner as in the case of No. 4. Samples 17 to 18 Hydroxyquinoline copper fine powder 370 g, POE (3
6 mol) 70 g of dodecyl phenyl ether, 40 g of ligulin sulfonate Na salt, 2 g of silicone emulsion (antifoaming agent) and 517 g of water were uniformly mixed in advance, and then wet pulverization was performed in the same manner as in Samples 15 to 16. On the other hand, in the same manner as above, except that an alkyl-modified silicone oil (non-reactive silicone oil, Shin-Etsu Chemical K
A grinding fluid was prepared by adding 3 g (0.3 wt%) of F413, viscosity: 100 cst). Sample 17 containing 35% of 8-hydroxyquinoline copper by mixing 105 g of a welan gum aqueous solution into these pulverized liquids while being dropped.
100 g of 18 was obtained. Samples 19 to 20 Samples 19 to 20 were produced in the same manner as in Samples 17 to 18 except that POE (15 mol) dodecyl phenyl ether was used instead of POE (36 mol) dodecyl phenyl ether. Samples 21 to 22 Sulfur pulverized with a jet mill (active ingredient 98%, average particle size 15 μm (hereinafter referred to as sulfur fine powder)) 420
g, POE (28 mol) tristyrylphenyl ether phosphate potassium salt 60 g, silicone emulsion (antifoaming agent) 2 g and water 527 g,
Wet grinding was performed in the same manner as in Samples 13 to 14 to prepare a grinding liquid. On the other hand, in the same manner as above, except that higher fatty acid-modified silicone oil (non-reactive silicone oil,
Toshiba Silicon TSF411, viscosity: 200 cst) 2g
(0.2 wt%) was added to prepare a grinding liquid. 120 g of xanthan gum aqueous solution was added dropwise to these pulverized liquids and mixed to obtain 1010 g of each of Samples 21 to 22 containing 40% of sulfur. Samples 23-24 POE (28 mol) Instead of the potassium salt of tristyryl phenyl ether phosphate, POE (12 mol)
Samples 23 to 24 were prepared in the same manner as Samples 21 to 22 except that the potassium salt of tristyryl phenyl ether phosphate was used. Samples 25 to 26 Sulfur fine powder 420 g, synthetic silicate (Syropure, manufactured by Kunimine Industries Co., Ltd.) 20 g, POE (55 mol) dibenzylphenyl phenyl ether 60 g, sodium salt of naphthalene sulfonate formalin condensate 30 g, silicone emulsion (antifoaming agent) 2 g Wet grinding was performed in the same manner as in Samples 13 to 14 in which 465 g of water and 465 g of water were mixed in advance to prepare a grinding liquid. On the other hand, in the same manner as above, except for fluorine-modified silicone oil (non-reactive silicone oil, FL-100 manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 45
0 cst) 5 g (0.5% by weight) was added to prepare a grinding liquid. An aqueous PVA solution (P
VA (molecular weight 100,000, saponification degree 85%) 5%, ethylene glycol 40%, Proxel GXL 2%, and water 53
%) 80 g were mixed dropwise to obtain 1015 g of each of Samples 25 to 26 containing 40% of sulfur. Samples 27 to 28 Samples 27 to 28 were produced in the same manner as in Samples 25 to 26, except that POE (14 mol) dibenzylphenyl phenyl ether was used instead of POE (55 mol) dibenzyl phenyl phenyl ether. . Sample 29-30 Sulfur fine powder 420 g, POE (42 mol) tribenzyl phenyl ether phosphate diethanolamine salt 40 g, POE (30 mol) nonyl phenyl ether 4
0 g, silicone emulsion (antifoaming agent) 2 g and water 4
After uniformly mixing 90 g in advance, wet grinding was performed in the same manner as in Samples 13 to 14 to prepare a grinding liquid. On the other hand, in the same manner as above, except that methylphenyl silicone oil (non-reactive silicone oil, TSF431 made by Toshiba Silicon, viscosity: 100 cst) 2 g (0.2% by weight)
Was added to prepare a grinding liquid. 80 g of an aqueous solution of welan gum was added dropwise to these pulverized liquids, and mixed with sulfur 4
1020 g of each of Samples 29 to 30 containing 0% were obtained. Samples 31-32 POE (42 mol) tribenzylphenyl ether phosphate diethanolamine salt instead of POE (1
8 mol) tribenzyl phenyl ether phosphate diethanolamine salt except that samples 29-30
Samples 31 to 32 were manufactured in the same manner as in. 2. Preparation of Poly Container As the resin material for the poly container, TPX (polymethylpentene resin, manufactured by Mitsui Petrochemical) was used.

Molding was carried out using a direct hollow molding machine TPF / TKVF-555 type (Tahara Shoei Kiko) for polyolefin resin, 500 ml bottle mold (height 184 mm,
Outer diameter 73 mm, mouth outer diameter 44 mm, wall thickness 0.6 mm, 50 g /
The molding temperature was adjusted between 250/280 ° C. 3. Physical property test method (3-1) Particle size measuring method A Shimadzu laser particle size distribution measuring apparatus SALD2001 type was used. (3-2) Peeling test method 200 ml of the test sample (agrochemical suspension composition) was placed so that it did not come into contact with the inner surface of the test poly container (500 ml), tightly stoppered and allowed to stand. Check the position by drawing a line with a felt-tip pen. After vigorously shaking the plastic container up and down 10 times, it was allowed to stand still at its original position, and the total amount of suspending agent flowed down to allow the entire line of the original static liquid surface to appear for approximately minutes (minutes) and to remain on the inner surface of the container. Check for adhesion. It is practically excellent that the peeling time is usually within 4 minutes, preferably within 1 to 2 minutes. (3-3) Aging test method The above-mentioned plastic container for which the peeling test has been completed is kept at 40 ° C. for 6 hours.
Appearance visually (presence or absence of sedimentation) after holding for 0 days
While observing the above, a glass rod having a cross-sectional diameter of 10 mm is gently inserted from above to inspect for caking.

Thereafter, as in (3-2), the peeling time and peeling state are observed. Even in this case, the peeling time is
Usually, it is practically excellent that it is within 4 minutes, preferably within 1 to 2 minutes. The results follow the evaluation criteria shown in Table 1 below.

[0019]

[Table 1] Table 1 ( Separability ) (Caking) ○ Almost no sedimentation and little caking △ There is a small amount of sedimentation A small amount of caking but no practical problem × Sedimentation Practical use due to a large amount of separation A large amount of caking is a major problem 4. Test results The results are shown in Table 2 below.

[0020]

[Table 2] Table 2 Types of samples Before aging test After aging test Average peeling Separation K average peeling Particle size time Kin Kin particle size time (μm) (min) Gug (μm) (min) 1 1.2 0.5 ○ ○ 1.5 1.5 2 1.2 0.5 ○ ○ 1.4 1 3 (Reference) 1.0 10 ○ ○ 1.2 14 4 1.0 1 ○ ○ 1.2 2 5 1.1 0.5 ○ ○ 1.2 2 6 1.1 0.5 ○ ○ 1.3 1.5 7 (Reference) 1.3 8 △ ○ 1.3 13 8 1.3 1.5 △ ○ 1.4 2 9 1.2 1.0 ○ ○ 1.2 2 10 1.2 1 ○ ○ 1.3 1.5 11 (Reference) 1.4 20 over △ ○ 1.6 20 over 12 1.4 1.5 △ ○ 1.4 2 13 1.1 1 △ ○ 1.2 2 14 1.1 1 △ ○ 1.3 1.5 15 (Reference) 1.3 10 △ ○ 1.3 15 16 1.3 1.5 △ ○ 1.5 2 17 1.1 1 ○ ○ 1.1 1.5 18 1.1 0.5 ○ ○ 1.1 1 19 (Reference) 0.8 12 △ ○ 0.9 16 20 0.8 2 △ ○ 1.0 2.5 21 0.7 0.5 △ ○ 0.7 1.5 22 0.7 0.5 △ ○ 1.0 1 23 (Reference) Over 0.9 20 △ ○ 1.0 20 Over 24 0.9 1.5 △ ○ 0.9 2 25 0.8 0.5 △ ○ 1.0 1 26 0.8 0.5 △ ○ 0.9 1 27 (Reference) 1.0 8 △ ○ 1.2 15 28 1.0 1 △ ○ 1.0 1.5 29 0.7 1 △ ○ 0 .9 2 30 0.7 0.2 △ ○ 0.9 0.5 31 (Reference) 0.9 12 △ ○ 0.9 16 32 0.9 1 △ ○ 1.0 1.5

[0021]

As can be seen from the above test results, by adding a specific surfactant and / or non-reactive silicone oil to the pesticide aqueous suspension composition filled in a polymethylpentene container, polymethylpentene can be added. The peelability of the pesticide aqueous suspension composition on the container is significantly improved.

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Claims (1)

[Claims] 1. A pesticide aqueous suspension composition filled in a polymethylpentene container, wherein the pesticidal aqueous suspension composition is blended with the following components (1) and (2) alone or as a mixture. A pesticide aqueous suspension composition comprising: (1) Polyoxyethylene alkylphenyl ether having an ethylene oxide addition mole number of 20 to 60, polyoxyethylene aromatic polynuclear ring ether having an ethylene oxide addition mole number of 20 to 60, and sulfates, sulfonates and phosphates thereof. A component selected from the group consisting of the salts of 1. and (2) a non-reactive silicone oil.