CN102197809B - Chlorothalonil dry suspending agent and preparation method thereof - Google Patents
Chlorothalonil dry suspending agent and preparation method thereof Download PDFInfo
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- CN102197809B CN102197809B CN 201110089346 CN201110089346A CN102197809B CN 102197809 B CN102197809 B CN 102197809B CN 201110089346 CN201110089346 CN 201110089346 CN 201110089346 A CN201110089346 A CN 201110089346A CN 102197809 B CN102197809 B CN 102197809B
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Abstract
The invention discloses a chlorothalonil dry suspending agent and a preparation method thereof. The chlorothalonil dry suspending agent consists of chlorothalonil, a wetting agent, a dispersing agent, a disintegrating agent and an inert carrier. By the chlorothalonil dry suspending agent and the preparation method thereof, the problem that layered precipitates are generated easily after a water suspending agent is stored is solved; the defect of flying dust caused by dry granulation is avoided; and the problem of long disintegrating time of water dispersible granules prepared by an extrusion method in water is solved. Compared with other pelleting processes, the preparation process has the advantage of realizing continuous production easily.
Description
Technical field
The present invention relates to a kind of preparation method of chlorothalonil dry suspending agent.
Background technology
Agricultural chemicals is the valuable cargo of agricultural production, utilizes agricultural chemicals that disease pest and weed of plant etc. is prevented and treated to have instant effect, preventive effect is good, wide adaptability and economic benefit advantages of higher.But agricultural chemicals is being guaranteed agricultural production good harvest simultaneously, also may to environment, to human, animals and plants are caused certain harm.The formulations of pesticide that some are traditional such as missible oil, wetting powder, pulvis etc. produce or use procedure in to environment, to human or there are potential harm in animals and plants.Contain a large amount of organic solvents in the emulsifiable concentrate formulation, these organic solvents are mostly inflammable, explosive, poisonous, not only in production, storing and use procedure, there is very large potential safety hazard, and can to environment, consumes again a large amount of non-renewable resources.Wetting powder is thin because of its particle, density is little, causes dust to wave in production and use procedure easily, and environment and human health are produced harm.Pulvis is low because of its effective content, and the use of directly dusting easily produces the dust drift, to environment, to human, crop is worked the mischief.Along with the day by day enhancing of people to environmental protection and human health consciousness, to the expectation of the Pesticidal products of safety, environmental protection with require also more and more higher.So the formulations of pesticide of exploitation safety, environmental protection have been instant responsibility.
The development trend of the formulations of pesticide is that water baseization direction is exactly that granulaization then is to develop to formulations such as water dispersible granules and dry suspending agents to the development of the formulations such as aqueous emulsion and suspending agent to water baseization, grain baseization future development.Dry suspending agent is a kind of novel form that grows up on wetting powder and aqueous suspension agent basis, and it combines both advantages, has overcome again deficiency separately.Dry suspending agent is fast disintegration in water, and dispersiveness and suspension are good; The particle of effective ingredient is thin, and the medicament of unit mass is in the broad covered area of crop surface, good drug efficacy; Without dust from flying, safety is good; Good fluidity is convenient to metering, packing; Can make the product of high concentration, reduce the storing cost.Dry suspending agent has just obtained rapidly development once coming out, be one of best formulation of combination property in the various formulations.
Tpn is a kind of low toxicity, wide spectrum, non-interior suction protective fungicide, is mainly used in the control of rust, anthracnose, powdery mildew, downy mildew on fruit tree, the vegetables.Tpn is an old product that has used decades, and its formulation mainly contains wetting powder, finish, pulvis, fumicants, granule, water dispersible granules etc., by the exploitation of novel form, so that this old product has lasting vitality.
Summary of the invention
The object of the present invention is to provide good, easy to prepare chlorothalonil dry suspending agent of a kind of suspension and preparation method thereof.
Technical solution of the present invention is:
A kind of chlorothalonil dry suspending agent is characterized in that: the composition by following mass percent consists of: tpn 50 ~ 92%; Wetting agent 1 ~ 10%; Dispersant 1 ~ 15%; Disintegrant 1 ~ 10%; Inert carrier 5 ~ 45%.
Wetting agent is selected from one or more in lauryl sodium sulfate, neopelex, Negel, Negel formaldehyde condensation products, the alkylphenol-polyethenoxy base ether.
Dispersant is selected from one or more in sodium alkyl benzene sulfonate formaldehyde condensation products, Negel formaldehyde condensation products, sodium lignin sulfonate, calcium lignosulfonate, the alkylphenol-polyethenoxy base ether.
Disintegrant is selected from one or more in urea, sodium chloride, bentonite, the polyvinylpyrrolidone.
Inert carrier is selected from one or more in diatomite, atlapulgite, attapulgite, the kaolin.
A kind of preparation method of chlorothalonil dry suspending agent, it is characterized in that: in will filling a prescription first each material by mass percentage water to be made into solid content be 30 ~ 60% slurry, then carrying out wet pulverizing with sand mill makes suspended nitride, then carry out mist projection granulating by the press spray drier, particle is by sieving to such an extent that particle diameter is distributed in 150 ~ 30 purpose dry suspending agents after the granulation.
The size distribution of particle was 1 ~ 5 micron population 〉=95% after sand mill was pulverized.
Spray press control when described press spray drier carries out mist projection granulating is at 2-3MPa.
Compare with existing product and technology of preparing thereof, a kind of chlorothalonil dry suspending agent of the present invention and preparation method thereof has following advantage:
1. overcome the problem that easily produces layering and precipitating after aqueous suspension agent is stored, avoided the defective of dry granulation dust from flying, solved water dispersible granules product long problem of disintegration time in water of extrusion preparation.
2. the prepared chlorothalonil dry suspending agent of the present invention is spheric granules, and good fluidity is easy to metering and packing.
3. the present invention adopts wet pulverizing, and initial size is little, the press atomization granulation, and disintegration rate is fast in the hollow prepared chlorothalonil dry suspending agent water of the particle that obtains, and suspension is good.
4. preparation technology of the present invention compares other prilling and is easy to realize serialization production.
The invention will be further described below in conjunction with embodiment.
Embodiment
Embodiment 1:
In the mixing kettle of 500L, drop into 250 kg of water, then in mixing kettle, drop into Morwet-EFW 7.5Kg, Morwet-D500 21.25Kg, tpn 212.5Kg, urea 2.5Kg, kaolin 6.25Kg successively.Mix the particle diameter that is crushed to particle by sand mill the 1-5 micron 〉=95%.Then suspended nitride pump-in pressure formula spray dryer is carried out granulation, spray press control is at 2-3MPa.Material sieves through screening machine and obtains grain graininess at 150-30 purpose dry suspending agent product after the granulation.
Embodiment 2:
In the mixing kettle of 1000L, drop into 550 kg of water, then in mixing kettle, drop into Nekal BX 12.6Kg, sodium lignin sulfonate 34.2Kg, tpn 337.5Kg, sodium chloride 22.5Kg, atlapulgite 43.2Kg successively.Mix the particle diameter that is crushed to particle by sand mill the 1-5 micron 〉=95%.Then suspended nitride pump-in pressure formula spray dryer is carried out granulation, spray press control is at 2-3MPa.Material sieves through screening machine and obtains grain graininess at 150-30 purpose dry suspending agent product after the granulation.
Embodiment 3:
First with each material in the following prescription by mass percentage water to be made into solid content be 30 ~ 60%(example 30%, 45%, 60%) slurry, then carrying out wet pulverizing with sand mill makes suspended nitride, then carry out mist projection granulating by the press spray drier, particle is by sieving to such an extent that particle diameter is distributed in the dry suspending agent of 150 ~ 30 orders (example 150 orders, 230 orders, 300 orders) after the granulation.The size distribution of particle was 1 ~ 5 micron population 〉=95% after sand mill was pulverized.Spray press control when described press spray drier carries out mist projection granulating is at 2-3MPa.
Prescription:
Tpn 50 ~ 92%(example 50%, 70%, 92%); Wetting agent 1 ~ 10%(example 1%, 5%, 10%); Dispersant 1 ~ 15%(example 1%, 7%, 15%); Disintegrant 1 ~ 10%(example 1%, 5%, 10%); Inert carrier 5 ~ 45%(example 5%, 20%, 45%).Above-mentioned each component sum is 100%.
Wetting agent is selected from one or more in lauryl sodium sulfate, neopelex, Negel, Negel formaldehyde condensation products, the alkylphenol-polyethenoxy base ether.
Dispersant is selected from one or more in sodium alkyl benzene sulfonate formaldehyde condensation products, Negel formaldehyde condensation products, sodium lignin sulfonate, calcium lignosulfonate, the alkylphenol-polyethenoxy base ether.
Disintegrant is selected from one or more in urea, sodium chloride, bentonite, the polyvinylpyrrolidone.
Inert carrier is selected from one or more in diatomite, atlapulgite, attapulgite, the kaolin.
Claims (3)
1. chlorothalonil dry suspending agent, it is characterized in that: the composition by following mass percent consists of: tpn 50 ~ 92%; Wetting agent 1 ~ 10%; Dispersant 1 ~ 15%; Disintegrant 1 ~ 10%; Inert carrier 5 ~ 45%; Wetting agent is selected from one or more in neopelex, Negel, Negel formaldehyde condensation products, the alkylphenol-polyethenoxy base ether; Dispersant is selected from one or more in sodium alkyl benzene sulfonate formaldehyde condensation products, Negel formaldehyde condensation products, sodium lignin sulfonate, calcium lignosulfonate, the alkylphenol-polyethenoxy base ether; Disintegrant is selected from one or more in sodium chloride, the polyvinylpyrrolidone.
2. chlorothalonil dry suspending agent according to claim 1, it is characterized in that: inert carrier is selected from one or more in diatomite, atlapulgite, attapulgite, the kaolin.
3. the preparation method of a chlorothalonil dry suspending agent claimed in claim 1, it is characterized in that: in will filling a prescription first each material by mass percentage water to be made into solid content be 30 ~ 60% slurry, then carrying out wet pulverizing with sand mill makes suspended nitride, then carry out mist projection granulating by the press spray drier, particle is by sieving to such an extent that particle diameter is distributed in 150 ~ 30 purpose dry suspending agents after the granulation; The size distribution of particle was 1 ~ 5 micron population 〉=95% after sand mill was pulverized; Spray press control when described press spray drier carries out mist projection granulating is at 2-3MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110089346 CN102197809B (en) | 2011-04-11 | 2011-04-11 | Chlorothalonil dry suspending agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110089346 CN102197809B (en) | 2011-04-11 | 2011-04-11 | Chlorothalonil dry suspending agent and preparation method thereof |
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| CN102197809A CN102197809A (en) | 2011-09-28 |
| CN102197809B true CN102197809B (en) | 2013-05-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104094952A (en) * | 2014-07-03 | 2014-10-15 | 济南一农化工有限公司 | Dry suspending agent for pesticide fungicide, and preparation method thereof |
| CN105831115A (en) * | 2016-03-31 | 2016-08-10 | 广东中迅农科股份有限公司 | Water-dispersible granule and clean production method thereof |
| CN108669101A (en) * | 2018-06-12 | 2018-10-19 | 允发化工（上海）有限公司 | A kind of Bravo suspending agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300975A (en) * | 2008-06-23 | 2008-11-12 | 江苏瑞禾化学有限公司 | Granulation method of pesticide dry suspending agent |
| CN101984815A (en) * | 2010-07-15 | 2011-03-16 | 江阴苏利科技有限公司 | Fluazinam dry suspending agent and preparation method thereof |
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2011
- 2011-04-11 CN CN 201110089346 patent/CN102197809B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300975A (en) * | 2008-06-23 | 2008-11-12 | 江苏瑞禾化学有限公司 | Granulation method of pesticide dry suspending agent |
| CN101984815A (en) * | 2010-07-15 | 2011-03-16 | 江阴苏利科技有限公司 | Fluazinam dry suspending agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| "百菌清悬浮剂";四川稼得利科技开发有限公司;《中国农药信息网》;20081211 * |
| 四川稼得利科技开发有限公司."百菌清悬浮剂".《中国农药信息网》.2008, |
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