JPS5813504A - Surface coating granular agricultural chemical - Google Patents

Abstract

PURPOSE:The titled granular agricultural chemical, prepared by mixing an agricultural chemical active constitutent with a watersoluble product obtained by polymerizing a monomer, e.g. acrylic acid, and coating the surface of a granular carrier, and capable of rapidly dissolving and releasing on application to fields without the stickiness or peeeling of the agricultural chemical active constituent. CONSTITUTION:A liquid or finely pulverized agricultural chemical active constitutent, e.g. an insecticide, germicide or herbicide, is mixed with a water-soluble or water-dispersible product obtained by polymerizing a monomer selected from acrylic acid, methacrylic acid, maleic acid and an ester thereof or salt thereof, preferably having a polymerization degree of 70-1,000, to coat the surface of a granular carrier, e.g. clay. The mixing ratio of the respective components is as follows: 1-20% agriultural chemical active constitutent, 0.5-10% polymerized water-soluble product, 0-5% assistant and the rest of the granular carrier. The granulation is carried out by spraying a solution or mixture of the respective components at the mixing ratio on a granulated granular carrier in a mixer by the rotation, uniformly coating the carrier, drying, dehydrating the coated carrier, and forming the coat thereon.

Description

[Detailed Description of the Invention] ``This paper relates to a method for coating agriculturally active ingredients on grains of DI!IIK and having excellent leachability as an agricultural chemical adhesive.'' Granular steel, the most effective grains of silk, kaolin, clay, milk bentonite, and white clay.

Various mineral mold powders such as calcium carbonate are mixed with surfactants as binders, disintegration and release promoting agents, and warming agents, water**inorganic components, and hydrophobic polymer substances, and a small amount of O water is added. Kneading) 'A method of kneading and granulating by agitation, T.

Or the raw stone is crushed and sieved to form a 9-carrier, and the surface-active steel medium or solvent is granulated as above.
There are a surface coating method in which the material is diluted and spray coated, and a method in which a granulated carrier is impregnated with the material.

Ordinary mulch agents are resistant to mechanical pressure, impact, and heat [
It maintains its shape without disintegrating against fK, and easily disintegrates and interacts with the active ingredient K11L in order to maximize its biological effect and exert its action. It becomes necessary. For this purpose, surfactants, water-soluble polymeric substances, ice-soluble inorganic compounds, etc. are used in the production of grains.・−ho acid salt,
Anionic surfactants such as succinate, rubenzene sulfonate in alcohol, polyoxyethylene O ether in alcohol, and allyl ether in alcohol are used in addition to non-ionic surfactants of esters, as well as emulsifier @0 mixtures. Ru. Water-soluble polymer substances include polyvinyl alcohol, polyalcohol in polyalcohol, CMC, MC,
Starch, Akbia βum, tragacanth gum, glucan, dextran, polyvinylpyrrolid/, glue, glyceride and diethylcellulose, Alda/1ljLwa V
sous, gelati/, liquid paratwin, cellulose S, tm
Human t! Medium dipropyl cellulose, tall m, beef tallow.

Silicone oil, vegetable works, vegetable oil, polyethylene wax, polyacrylate, polymaleate, etc. are used.

In the case of the kneading type granulation method, most of the 1tan active ingredient is incorporated into the granules, so 1tan! Unless the active ingredient disintegrates and diffuses, there is no need to worry about the deterioration.9) The one point of 69I is that it is difficult to atomize.*The production of granules by the surface coating method has been improved in this respect. -ha?) Because of the simplicity of the -decimal system, it is often used, and some of us have suffered from O threshold ■ points. ★Zu, the granular material 01111 has an @ strange amount of effective force and attachment.

That is, in the case of a liquid agricultural chemical active ingredient, it can be sprayed directly to coat it, or it can be coated by mixing it with the various auxiliary agents and SSI; It is disputed that granular O-association is observed, and in the case where the agricultural chemical active ingredient is solidified and solid, it may be used alone or in combination with other surface-active steels or adjuvants, or It is melted in a solvent and sprayed onto the surface of the granules to coat them, but after drying, the active ingredient of the agricultural chemical precipitates out and is often removed by a peeling tool.

The inventors of the present invention coated the surface of the granular body with a single-form active ingredient in a liquid agricultural chemical active ingredient, bonded it without peeling (bonded), and applied it to an open field. As soon as possible
(As a result of various studies, we found that the active ingredient is a liquid and solid OSg component, and the carrier is a 9-granular material obtained by sifting from crushed raw stones and various minerals from the end of a mold field.) A coating of water*, a, or a water-dispersible synthetic polymer carboxylic acid and its derivatives is layered on the surface of the granulated granules, and then P is added to form agrochemical active ingredient granules 01.
It has been found that a surface-coated agricultural granule with excellent yield performance can be produced regardless of size.

Synthetic polymeric carboxylic acids and their 011 conductors in this specification include polymers of acrylic acid, methacrylic acid, and maleic acid. ◆ Containing genus salts, ammonium salts and organic amine salts.

All of these unsaturated cardanoic acids have a vinyl group), and can be used as catalysts on existing omniscient O radicals.
IO has good compatibility with pesticides, which are dissolved or dispersed in water and have good compatibility.

After drying, it forms a film with strong mechanical strength, and has the function of quickly evaporating in water and eluting the active agricultural ingredients together with other adjuvants such as surfactants into water. .

919 is specified here because it has other vinyl groups and can form copolymers with monomers such as styrene, vinyl acetate, vinyl chloride, and various vinyl ether compounds. Polymers that form many types of films can be derived.

Variants include lIt lyacrylic acid, polymethacrylic acid s
9 Maleic acid, polyacrylic acid-methacrylic acid, polyacrylic acid-maleic acid, polyacrylic acid-vinyl acetate, polymaleic acid-vinyl acetate, and sodium, calicum, and ammonicum salts-organic atronic salts of these polymers, etc. Saponified products are preferable! This can be cited as an example. Some of these carboxylic acids and their derivatives have been used as granules in 11 cases. For example, 4
1986-1 Town No. 01 is made by combining grains with excellent disintegration and spreadability in water with K111 and granulating them using a rolling die granulator or an extrusion die granulator. 612. The large pesticide granules produced in this way are characterized by a granule that disintegrates in water upon application, allowing the active ingredients to diffuse.

In addition, the 41st Eisai Sho-Sen-Sue 10881 is obtained by dissolving *W of the 1llI and pharmaceutical drug dispersant with the above-mentioned synthetic polymer carboxylic acid and its derivative Oas powder after producing the granule].

This is an attempt to improve the clear weather performance.Therefore, these existing devices have completely different technical ideas from the present invention.

The synthetic polymeric carboxylic acid and 70, S conductor related to this invention can be used in many types depending on the type of monomer, and generally have a heavy metal content of 70 to 70. A range of o is suitable. But it must be ZushimoζO@IIK@
It is not a turtle that is determined.

These synthetic polymeric carboxylic acids and derivatives are in the Ii form and the h form is usually used when forming a film! The active ingredients of the nine-a medicine are contained in a liquid or mold as an aqueous solution of O to 40% O, and furthermore, an adjuvant, fI, which facilitates the softening of these ingredients.
It is sprayed on both sides of the granular carrier together with the Kaizono activator as an I release/diffusion promoter and the emulsifier to promote emulsification.
After that, it is made into granules through a drying process. 1: The effective amount of pesticides that can be used in this Ii @ is the centrifugal agent, s
! All kinds of pesticides K11, not just soda agents and herbicides K11l
It is for personal use.

0.8-dimethyl-N-acetylphos,
holamidothioate, 0.0-dimethyl-8-7talindomethyldithiophos 7-ether), 0,0-diethyl-
8-2-(ethylthio)ethyl phosphoroditioate,
! -ri■Lu1-, (L4.!1-)9/Rol7-dimethyl)vinyldimethylphosphate, diphenyl-N-methylcarbamate in isopropyl, dimethyl(3-methyl-4-nitrozenyl)theophosph"-) s 1
−+7? Roux H-methyl carbamate, (!
-Isopropyl-4-methylpyridenyl-6)-diethylthiophosphate, etc., and examples of the disinfectant include "diisopropyl-13-dithiolane-8-de!" 9! -Maroney-
), O, O-cyi, soprobyl-8-benzylthiophosphate, etc. As herbicides, starvation 4-di, chlor7-ether-3-methoxy-4'-ethoptzel ether, S-ethylhekipurple and)'El- IH-Azepine! -carbotheoate,
Meaning-methylthio-also 6-pis-ether-electro-8-triazine,! , 6-ditharolbenzo tritolyl-(4-
'chlorobenzyl)-N,N-diethylthiocarpa 57
), meaning-chlor-also 6-bis(ethyl-0-todryazine, L4-dichloromethyl-4-nido-phenyl ether), Examples include toisopropylene tomonzoteadiazinone-(4)-dioxide, 3-dioxide, etc., but only these large exemplified compounds have a Kll rating of 1.
Rei is not O either.

° The above ingredients - The blending ratio is not determined by *, but it is #liquid or OI & medicinal active ingredients in one serving! −+
Mayuzumi・%, synthetic polymer carin-1 and its derivative al-1
0%, other adjuvants o-s%, sensitive crane body residue and self-propagation are often used. ' ・Granule l1l11 by Honkyomei
The method is I! The method described above can also be applied to the surface of the surface.

Arbitrary combinations of each component can be combined simultaneously with an aqueous solution of an active ingredient, a synthetic polymer carboxylic acid or a 70% trout conductor, and an auxiliary agent such as a surfactant.

Alternatively, the granular carrier or raw stone of size 0, obtained by granulating the mineral mold powder, is heated according to the arbitrary distribution order. The carrier obtained by crushing and sieving is placed in each sieve, stirred and sprayed to uniformly coat it, and then dried for 1 time and dehydrated to form a film. , ε The 9-pasteurized pesticide is bonded to the surface of the carrier in a synthetic polymer coating, has 9 active ingredients, and has excellent mechanical strength *D One piece peels off and collapses due to an attack.

After being applied, it quickly decomposes in water, releasing the active pesticide ingredients and promoting their diffusion.

Next, I will give examples of rounding IK that explain this book in a different way.

1 Essay Example L 3 parts of o,o dimethyl-8-(3.methyl@4.ethyl)thiophosphate, polyoxyethylene styrylphenyl ether and calcium dodecylbenzenesulfonate≠? Aqueous solution 1111 containing 1 part of the mixture and 10% of polyacrylic acid (average molecular weight 81.000) and 10% of polymethacrylic acid (average molecular weight!?@00)!
After uniformly softening the s part, Nachtar construction was performed.

Medium weight - Medium, 48 to 75 pieces of grain IKII fallen fine clay 14! IIIK was added by spraying, thoroughly stirred and ground, and a drying process of 907 oz. hours was performed to obtain fine granules containing 3% of the active ingredient.

Example 1 3 parts of 4-S Denkron Kll Krushitomo L-Nafdel N-Metelcarpame) and 8 parts of a 15% aqueous solution of acrylic acid triethanolamine salt (average molecular weight 1111,00G) were uniformly mixed after fiHL nine days. The active ingredient 3 was sprayed and mixed in a drum shaker on the finely divided clay 91!
Obtain microgranules containing %.

Examples: 5 parts of α0-diethyl-5-S-<ethylthio)-ethyl-phosphotetradithioenite, 8 parts of a mixture of polyoxyethylene steryl phenyl ether polymer and calcium dodecylbenzenesulfonate, ammonium polymethatalylate 1 liter of 40% water (average molecular weight 29,800)
After uniformly mixing the liquid S part, mix it in a Nauta mixer for 16 minutes.
Mix and stir with ~300 ml of sifted sea sand II'' and overturn. After drying for 11 hours, a granule containing 6% of the active ingredient was obtained. Example: 43 parts of clay and 40 parts of bentonite were kneaded with 17 parts of a nine-tone solution containing 20% sodium lignin sulfonate;
Using an extrusion-type binding machine, dry the 9-grain base material with a diameter of a8 x K11'I11, add 2 parts of diisopropyl, and add 1.3 x 1.
1 part of 40% aqueous solution of 1 part of dithiolane-ylidene-maloney) and styrene-sodium maleate copolymer (mole ratio l: 3. Average molecular weight 1 &!! 00). of the mixture,
It is adsorbed in a rolling granulator and then granulated. After a long drying process, 11 active ingredients! Granules containing %.

Example 1 drop of ethyl hexa-frame hydrochloride 1 g of azepine--1 6 parts of thioate, 2-methylthio-4...) 1-bis-ethylamine 1-8-) riazine L5111, 1 part of dioctyl sulfonate succinate and polyvinyl acetate −
8 parts of a 25% aqueous solution of sodium acrylate copolymer (molar ratio 1:3, average molecular weight 44,000) was mixed in the saline, and then
In Naktar 1dP sir, l! - Spray on the SaS part of the limestone that has been sieved to a depth of 32 mm and coat it with 90 pieces of O''c.
After a drying process of m hours, the active ingredient 7. ! Obtain granules containing &%.

Examples 8-(4-chlorobenzyl)-N-N-diethyldeocarpamate Tobe, Tomi, 4. ＠）Liclor Fueru 4-
After homogenizing 15 algae of a 30% aqueous solution of dito-tetraphenyl ether @IE, sodium poly(97/9), and sodium methacrylate copolymer (4 lx ratio, average molecular weight 4,000), Naratanxa - Inside, 12~S! It can be coated by spraying on charcoal 771- which has been sieved to 70'c.
! After a long drying process, granules containing 13% of the active ingredient were obtained.

The results of the peel test and leaching test of the above examples are shown below.

Peeling test results (i) Method The test method is based on the peeling rate calculation method by Zennogho, that is, put the sample granule or fine granule 101 into a glass filter as shown in the figure below (11G! Glass filter used) and connect all parts. After that, air was passed for 2 minutes at the rate of wind f”Win.Then, the remaining 99 samples were collected in the Dallas filter.
Weigh it and calculate the peeling rate using the following formula! The average value of the return was calculated.

The results were as above (Examples 1 to 60 granules all had a peeling rate of 0%, that is, the results were rich in bonding properties).

am removal test results (1) Method: Pour ion-exchanged water into a tall beaker of SOO*.
Add O-, add 1 tablet 5fr, leave it at 20℃ for 4 hours, pass this test solution through 12s of medicine & O, and then! ! It was washed with ion-exchanged water of 0-1, and P solution was combined to give a constant volume of 505 g.

The leached axle is used to quantify each active ingredient using gas chromatography based on Pesticide Residue Analysis Method (Soft Science Co., Ltd., 1985).
X 11 SO/! ! t Riazine Asss-(4-ChloobendiA-)-N,N-Dietherteocarpamate) [4fL4. @-) Lichlorphenyl-4'-nitrophenyl ether As a result, all of the examples showed granules that sufficiently retained their shape against mechanical balance and had a sufficiently high leaching rate in water. It is clear that

, I'- Procedural Amendment (Trial) Indication of Case L 1939 Showa S6 Patent Application Nos. 113441-2
Title of the invention Surface-coated granular pesticide & Person making the amendment November 24, 1980 (Date of shipment) & Subject of amendment The [Detailed Description of the Invention] section of the specification and the description of [Drawing J].

Contents of amendment a: Deletion of the drawing on page 14 of the specification.

(1) Delete the drawing on page 14 of the specification.

(2) Provide a section titled ``4. Brief explanation of the drawings'' on page 17, line 4.

(31 Specification page 17 4 Thickness and Column K "Drawing (1) is a side view. In the figure (1)......... Compressor (2)...・・・・・・・・・・・・・・・・・・
Manometer (31・ Connecting pipe (breeding ■=) (4)・・・・・・・・・・・・・・・ 11σ
Oni glass filter (6t...)
・・・・Adapt＾−(6)・・・・・・・・・・・・
・・・・・・Supplementary style (7)・・・・・・・・・・・・・・・
... Indicates a bag filter. ” Insert ゛.

(4) Describe the drawing as a separate sheet.

Claims (1)

[Claims] The liquid is made into a mold and the active ingredients of the pesticide are polymerized with nine monomers selected from acrylic acid, methacrylic acid, and their esters or salts to make them water-soluble or water-dispersible. Characterized by coating using the product of