JPS59193803A - Granular wettable agent having improved physical property - Google Patents

Abstract

PURPOSE:To provide a granular wettable agent having improved disintegration property and dispersibility in water, by adding a nonionic surface active agent in combination with a specific ratio of a sulfate-type anionic surface active agent or asulfonic acid-type anionic surface active agent added with polyalkylene. CONSTITUTION:The objective agent contains (A) an anionic surface active agent of formula I (R1 is alkyl, alkylphenyl, phenylphenol group, etc.; A1O is ethylene oxide group, etc.; n is integer of 3-100; M1 is alkali metal, etc.) or formula II(R2 is 8-18C alkyl or alkylphenyl; A2O is ethylene oxide group, etc.; m is integer of 3-100; M2 is alkali metal, etc.) [e.g. EO(8mol)dodecyl ether sulfuric acid sodium salt] and (B) a nonionic surface active agent. The ratio of (A) to (B) 1 to 0.05-1, and the sum of the surface active agents is 5-20wt%. Since the active component can be dispersed rapidly in the above wetting agent even if the component is used in high concentration, the clogging of the apparatus can be prevented, and since an organic solvent is absent in the agent, various problems caused by the solvent can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a granular wettable powder with improved disintegrability and water dispersibility. More specifically, the present invention includes:
The pesticide active ingredient has the general formula CI) R10(Al 0)nsO3fV1. CI)
(However, in the formula, R is an alkyl group, an alkylphenyl group, a phenylphenol group, a diphenylphenol group,
Styrenated phenol group, distyrenated phenol group,
Styrenated paraphenylphenol group, cyclohexylphenol group, cyclohexylphenol group, tricyclohexylphenol group, benzylphenol group, trihensylphenol group, A and O may be the same or different, and ethylene oxide or propylene oxide , n represents an integer from 3 to 100,
M represents an alkali metal, ammonium or amine base), or an anionic surfactant represented by the general formula (II) R20(A70) mCOCH2S 03M
2 (II) (However, in the formula, R2 has a carbon number of 8 to 18
represents an alkyl group, alkylphenylno^, A20
may be the same or different and represent ethylene oxide or propylene oxide, and m is 3 to lOO
, where M2 represents an alkali metal, ammonium or amine base) and a nonionic surfactant. The present invention relates to providing improved granular hydrating agents.

In recent years, in order to save labor, a method of diluting and dispersing a formulation containing a high concentration of agrochemical active ingredient at a low magnification is becoming popular. Currently, emulsions and aquariums are the mainstream forms of these preparations. However, emulsions contain large amounts of organic solvents and have problems such as flammability, volatility, and irritation. In addition, when spraying, there are problems such as mulberry being washed away from the destination, causing chemical damage to crops, and contaminating the paint on the φ:. On the other hand, in the case of irrigation agents, problems like emulsions do not occur because they do not contain solvents, but when the agents are added to the tank, a strong dust is generated, which can be inhaled by workers and can cause skin problems. This poses a safety and health problem.

In order to solve these problems, a method has been developed in which agrochemical wettable powders are made into granules to prevent dusting. For example, conventional water conservancy preparations are mixed with water-soluble inorganic salts to make granules (Japanese Patent Publication No. 53-12577), sugars, naphthalene sulfonic acid surfactants, and alkali metal phosphates are mixed into granules. There is one that is used as an agent (Japanese Unexamined Patent Publication No. 163303/1983). By granulating it, dusting can certainly be prevented. However, even if you try to contain the active ingredient at a high concentration and dilute it at a low ratio, it takes time for the granules to disintegrate into a suspension in water, or the granules do not disintegrate and disperse quickly. However, there are drawbacks such as some particles floating or settling. Therefore, especially in the latter case, it may clog the spreader, or it may end up spreading a mixture of solid particles and water suspension that are not dispersed even if it is boring. As a result, the actual situation is that the pest control effect has not been fully demonstrated.

The present inventors have conducted repeated research to solve these problems. As a result, it was discovered that the above-mentioned problems of current formulations could be solved by adding the above-mentioned two types of surfactants to the agricultural chemical active ingredient at the time of r (f1) to create a granular irrigation agent.The present invention has been completed.

According to the granular irrigation agent of the present invention, a sulfuric acid ester-based anionic surfactant or a sulfonic acid-based anionic surfactant in which a polyalkylene represented by the general formula (I) is added to a conventional hydrating agent. By combining a nonionic surfactant at a certain ratio and making it into granules, even if the pesticide active ingredient is contained at a high concentration, it can be diluted and sprayed at a low magnification suitable for aerial spraying. It is quickly suspended in water and can be sprayed uniformly without clogging up the spraying machine. Furthermore, since the granular wettable powder of the present invention does not use an organic solvent, it does not suffer from the various problems described above with emulsions, and unlike powdered wettable powders, there is no danger from dust. In addition, since it is granular, it is easy to handle, and since it does not stick to containers, it also has the characteristics that the drug can be used without wasting it.

The anionic surfactant that can be used in the present invention may be any compound included in the above general formula. For example, examples of the anionic surfactant represented by the general formula CI) include the following. However, EO is ethylene oxide, PO is propylene oxide, and the number of moles (n in the general formula).

) indicates the number of moles of EO and PO added.

(1) EO (8 mol) sodium dodecyl ether sulfate (2) EO (30 mol) ammonium octadecyl ether sulfate (3) EO (3 mol) PO (2 mol) sodium octyl ether sulfate (4) EO (20 mol) octylphenol ether Sodium sulfate (5) EO (to mol) Nonyl phenyl ether ammonium sulfate (6) PO (2 mol) EO (60 mol) Nonylphenol ether ammonium sulfate (7) EO (20 mol) Po (15 mol) Ammonium dodecyl ether sulfate (8) EO (6 mol) Menylphenol ether ammonium sulfate (9) EO (10 mol) Nonylphenol ether sulfate + t
;'Ethanolamine (10) EO (18 mol) Styrenated phenol ether sulfate Ammonium (x 1) EO (8 mol) Distyrenated phenol ether sulfate (12) PO (2 mol) EO (5 mol) ) Styrene (1
0 mol) ammonium phenol ether sulfate (,1
3) PO (3 mol) EO (24 mol) PO (1a
t-l) Styrenated phenol ether ammonium sulfate 11 (14) EO (9 mol) Benzylvaraphenylphenol ether ammonium sulfate (15) EO (17 mol) PO (15 mol) cyclohexylphenol ether ammonium sulfate 1\ci 6)
PO (3 mol) EO (55 mol) dicyclohexyl 7-ethyl ether Tdtm sodium (17) EO (1
0 mol) PO (5 mol) Sodium tricyclohexylphenol ether sulfate (18) EO (50 mol) Styrenated paraphenylphenol ether ammonium sulfate (19) PO (5 mol) EO (30 mol) PQ (10 mol) Diphenylphenol ether Ammonia sulfate L・
(20) EO (13 mol) Tribenzylphenol ether ammonium sulfate (2B PO (5 mol) EO (20 mol) Styrenated phenol ether ammonium sulfate (22) EO (13 mol) Benzyl orthophenol ether ammonium sulfate (23) EO (10 mol) ) PO (10 mol) cyclohexylphenol ether sodium sulfate (24,) EO (18 mol) styrenated phenol ether sulfate triethanolamine - The anionic surfactant represented by the general formula [11] is as follows: can be given.

(1) EO (3 moles) Sodium dodecyl ether acetate sulfonate (2) EO (10 moles) Sodium dodecyl ether acetate sulfonate (3) EO (5 moles) Nonylphenol ether acetate sodium sulfonate In the present invention There are no particular restrictions on the nonionic surfactants that can be used, including ethers, fatty acids, and polyhydric alcohols before sulfation or sulfonation, which are used when synthesizing the anionic surfactants. Examples include fatty acid esters, aliphatic amines, aliphatic amides, and those obtained by adding alkylene oxide to these derivatives. Representative examples of these are listed below.

(1) EO (8 mol) dodecyl ether (2) EO (3
0 mol) octadecyl ether (3') EOI': 3 mol) PO (2 mol) octyl ether C4) EO (20
mol) Octylphenol ether (5) EO (10 mol) Nonylphenol needle (6) PO (2 mol)
EO (60 mol) Nonylphenol ether (7) EO (16 mol) Nonylphenol ether (8
) EO (20 mol) PO (15 mol) Dodecyl ether (9:) EO (50 mol) Nonylphenol ether (
, L 0) EO (40 mol) octylphenol ether (11) EO (15 mol) PO (10 mol) octadecyl ether (12) EO (70 mol) nonylphenol ether (
13) EO (8 mol) dodecyl ether (14) EO (
18 mol) styrenated phenol ether (15) EO
(8 mol) Distyrenated phenol ether (16)P
O (2 mol) EO (5 mol) Styrenated phenol ether (17) PO (3 mol) EO (24 mol) PO (10 mol) Styrenated phenol ether (18) EO (9 mol) Benzylvaraphenylphenol Ether <19) EO (17 mol) PO (15 mol) cyclohexylphenol ether (20) PO (3 mol) EO (55 mol) PO (15 mol) cyclohexylphenol ether (21) EO (10 mol) PO (5 mol) ) tricyclohexylphenol ether (22) EO (50 mol) styrenated rough phenol ether (23) PO (5 mol) EO (30 mol) po (io mol) ゛,l phenylphenol ether C24) EO (13) mol) trihensylphenol ether (25) EO (3 mol) l'P syl ether sulfate (26) EO (10 mol) F decyl ether acetate C27) EO (5 mol) nonylphenol ether acetate (28) EO ( 15 mol) stearic acid monoester (
29) EOCt4 mol) Lauric acid monoester (30
) EO (9 mol) phosphoric acid monoester (31)
EO (l Omo1shi) Laurin Diester (32) E
O (9 mol) Oleic acid diester (33) Chrycerin lauric acid monoester (34) Tri-11 serine Stearin ugly monoester (35) Pentani slit Palmitic acid monoester (36) Sorbitan Lauric acid monoester (37) ) 7' Luhitan Palmitic acid monoester (38) Sorbitan Stearic acid monoester (:39) Tsuru (Nitan Stearic acid triester (40) Norvita/ Oleic acid monoester (4+)
, > Sorbitan Olein Ugly Triester (42)
EO (9 mol) Lauric acid monoester (43) EO
(t 5 mol) Oleic acid monoester C44) Sucrose lauric acid monoester (45) Sucrose palmitic acid monoester (46) Sucrose stearic acid monoester C47') E O (7 mol)
Laurylamine (48) EO (30 mol) Stearylamine (49) EO (10 mol) Oleic acid amide C5
0) EO (30 mole palmitic acid amide) Anionic and nonionic 64/? surfactants do not provide good physical properties for granular water preparations, but wood [
Only by using two types together, such as in the case of 夛→, can the above-mentioned excellent effects be exhibited. The addition ratio of these surfactants needs to be changed as appropriate depending on the agricultural chemical active ingredient, but the ratio of nonionic surfactant t) to 05-1 to 1 part anionic surfactant, The proportion is 2 mol % or more based on the entire preparation - 1-1 Ijl or 5
It is sufficient to add up to 20% by weight.

The agricultural chemical active ingredients that can be used in the present invention are not particularly limited, and include, for example, the following. The name of the active ingredient is [Pesticide Handbook 1981 1 Niji] (11
(published by the Plant Protection Association).

First, as fungicides, kasugamycin, polyoxin,
streptomycin, validamycin A, fusaride,
Typortan, IBP, EDDP, Thiophane I-methyl, tridiclasol, mebronil, flutoluanil, inprothiolano, maneb, zineb, manseb, sulfur, II nickel, phenane oxide, beanyl,
propenol, vinylchlorine, procymidone, iprodione, lecithin, cabtan, T12 octavalent chloride steel, basic copper sulfate, cupric hydroxide, thia-7; acine, triphenyltin hydroxide, TPN , hydroxyinxane-1J, TMTD, triazine, MAF, polycarbonate-1, plasticidin S, dimedyrimol, dithianone, dichlorofluanid.

As insecticides, MEP, BPMC, XMC, MPMC
.

Hutnaone, Marathon, MPP, PHC, Dimethyl Vinpos, BRP, MTMC, NAC, Diazinon, Pyridafenthione, Acephate, Formothion. P.A.P.
, DEP, prothiophos, globenzilate, pirimiphos methyl, binabacryl, PMP, monocrotophos,
Formothion, phenine bromorate, thiometone, ethylthiometone, EPBP, ESP, dimethoate, fenbutastin oxide, BPPS, CVMP, propafos,
Isoxathion, Kelsen, CYAP, Salithion, Benzomate, Pyrethrin, DMTP, Amitraz, DD
VP, oxamyl, cartap, CvP, isothiony 1, MIPC, methomyl, fosalone, glorbilifos-methyl, PMP, etc.

Herbicides include chromethoxynil, GNP, molinate, gsomento, DBN, DCMU, alloxydim, paraquat dichloride, IPC, promethrin, atrazine, be/thiocarb, viraturate, CAT, cymetrin, MCP ethyl, MCPB ethyl, MCC, DCPA.
, trifluralin, pentacine, ditraline, butachlor, bifenox, glyphos-1, oxacycin, etc.

Plant growth regulators include etefo 7, indole acetic acid,
Shi△, Relin.

The production of the granular irrigation agent according to the present invention does not require any special method or equipment, and can be produced using various carriers and adjuvants commonly used in the production of agricultural chemicals. Examples of the granulation method include extrusion granulation, transfer granulation, crush granulation, fluidized bed granulation, and spray granulation.

The particle size and shape of the applicant's 1°l-shaped wettable powder are not particularly limited, but in terms of size, it can be applied to obtain particles with a diameter of about 50 microns to 5 mm, for example. can. Regarding the shape, it may be spherical, circular, cylindrical, or have a fixed elongation rate.

EXAMPLES Below, Examples will be given to explain the present invention in general, but the present invention is not limited to these examples.

In addition, all parts in the examples refer to polished parts.

Example I NAC 70 parts white carbon 12
2 parts Frey - 6 parts EO (10 mol)/Nylphenol ether ammonium sulfate 10 parts EO (1
0 mol) nonylphenyl %, l 2 parts -
1- After pulverizing and mixing the composition, 15 parts of water was added and extruded. Pelletize with j machine, dry and sieve to 10 to 48
Obtain Menshiyu's talent and r.

Example 2 B PMC 40 parts White carbon 50 parts EO (20 mol) PO (15 mol) Dodecyl ether ammonium sulfate 5 parts EO (1
6 mol) Nonylphenol ether 5 parts After mixing and pulverizing the above composition, 12 parts of water is added and granulated using a transfer granulator. After drying, the mixture is sieved to obtain granules of 10 to 48 meshes.

Example 3 MEP 40 parts White carbon 50 parts EO (
8 mol) Sodium distyrenated phenol ether sulfate 9 parts EO (8 mol)
After pulverizing and blending the 1 part distyrenated phenol ether composition, 15 parts of water was added and granulated using a transfer granulator. After drying, the mixture was sieved to obtain granules of 10 to 48 mesh.

Example 4 XMC 35 part Piritafennaon 35
Bushi Wai [・Carbon 2]
01゛Mother Clay
4 parts EO (2 mol) EOC 5 mol) Styrenated phenol ether ammonium sulfate 5
Part PO (2 mol) EO (5 mol) Styrenated phenol ether 16<6
- After pulverizing and mixing the composition described above, 15 parts of water was added and granulated using an extrusion granulator. After drying, the composition was sieved to give a particle size of 10 to 48 mesh. Obtain a grain.

J': Absolutely 5 PAP Part 3 XM0
30gb White Carphone 341゛E O (13 mol) Benzyl Fe/-L Ether Ammonium Sulfate 4 F bPO (13 mol)) Ribenzyl Fe 2-Nol Ether
Part 2 After mixing and pulverizing the composition in Part I, add 10 parts of water and use a rolling granulator.
, '(shi, after drying, 10 to 48 menshi
Get grain.

Example 6 Kascamycin 4 parts Fusaride 70 parts White carbon io parts EO (5 moles) Nonylphenol ether acetate ester sulfone sodium 15 parts EO (5 moles)
Mol) Nonylphenol ether 1 part After mixing and pulverizing the above composition, 10 parts of water is added and granulated using an extrusion machine. After drying, the mixture is sieved to obtain granules of 10 to 48 mesh.

Example 7 Basic copper chloride 813
White carphone io part EO (18 mol) Styrenated phenol ether ammonium sulfate 885 EO (
After mixing and pulverizing the "18 mol) styrenated phenol ether" bipedal composition, 5 parts of water was added and the mixture was granulated using a transfer granulator. After drying, it was sieved to obtain 48 to 250 mesh granules.

Example 8 Propenanol 50 parts wide carb 10 parts clay 30 parts EO (20 moles) octylphenol ether (sodium cimate 5 parts EO
(20 mol) octylphenol ether 5 parts F,
After mixing and pulverizing the above composition, 5 parts of water is added and granulated using an extrusion granulator. After drying, the mixture is sieved to obtain 48 to 250 mesh granules '41γ.

Example 9 DCMU 50 parts White carbon 10 parts Clay 31 parts EO (5
0 mol) Styrenated paraphenyl ether ammonium sulfate 6 parts EO (50 mol)
Styrenated paraphenylphenol ether
After pulverizing and mixing the composition in Part 3, 1, 7 parts of water is added, and the mixture is granulated using a rolling granulator with a J2i trowel. After drying, the mixture is sieved to obtain 48 to 250 mesh granules.

Hereinafter, test examples will be given to prove the usefulness of the present invention. In addition, from Examples 1 to 6, the nonionic surfactant was removed and the same amount of white carbon was used instead, and from Examples 1 to 6, the anionic surfactant was removed and the Instead, a formulation prepared by replacing the same amount of white carbon was used as a control agent in the test.

Test Example 1: Underwater disintegration test Five samples manufactured according to the example were placed in a petri dish with a diameter of 8.5 cm containing 30 m of 3rd degree hard water, and the time until the particles disintegrated and no longer retained their original shape was measured. , the shorter the 6-collapse Makima to calculate the average value of 5 grains, the better, but 60
If it collapses within seconds, there is no problem at all.

2. Dispersibility test 50 g of the sample prepared according to the example was placed in a 200 mKL stopper bottle filled with 150 ml of 3rd degree hard water and allowed to stand for 1 minute.

After standing still, the mixture was vigorously inverted 30 times, left standing again, and the state of dispersion was observed. After leaving for another hour, pass through a 250 mesh sieve.

The residue on the sieve is transferred onto a filter paper using a small amount of wood, and after drying, the residue is filtered! Measure the weight of the item. The amount of heavy residue left behind is excellent.

In addition, the evaluation of the dispersion state was performed according to the following criteria.

Standard evaluation of dispersion F1 ○ Uniform dispersion Δ Undivided enemy × If there is a large amount of agglomeration, the strainer and nozzle in the 11j device will become clogged, making it impossible to spray. Under the conditions of this test example, the amount of residue is 50
There is no problem if it is less than m sentences, but if it becomes abnormal, there is a risk of causing the above-mentioned trouble.

The types of test materials in the table are as follows: N101-30 Invention product 31-55 Control agent (using only anionic surfactant) NO56-83 // (using only nonionic surfactant) The results are shown in Table 1.

Claims (1)

[Scope of Claims] The agricultural chemical active ingredient has the following formula: phenylphenol group, cyclohexylphenol group, jinglohexylphenol group, tricyclohexylphenol group, benzylphenol group, trihensylphenol group, A and O may be the same or different, and ethylene oxide or propylene oxide 7, n represents an integer from 3 to 100, Ml represents an alkyl metal, ammonium or amine base), or an anionic surfactant represented by the general formula % formula % (wherein R7 is the number of carbon atoms 8 to 18 alkyl groups or alkylphenyl groups are set to 4, A20 may be the same or different, represent ethylene oxide or propylene oxide, 1m represents an integer of 3 to 100, M2
is an alkali metal, ammonium or amine base) and a nonionic surfactant. .