CN1545878A - Mancozeb water dispersibility granule and preparation method thereof - Google Patents
Mancozeb water dispersibility granule and preparation method thereof Download PDFInfo
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- CN1545878A CN1545878A CNA2003101097078A CN200310109707A CN1545878A CN 1545878 A CN1545878 A CN 1545878A CN A2003101097078 A CNA2003101097078 A CN A2003101097078A CN 200310109707 A CN200310109707 A CN 200310109707A CN 1545878 A CN1545878 A CN 1545878A
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- mancozeb
- water
- dispersible granules
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- sodium
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Abstract
The invention relates to a formulation of Mancozeb aqueous dispersion and method for its preparation, which comprises 40-90% of Mancozeb, wetting agent, dispersing agent, bonding agent, stabilizing agent and filling material, and is hollow ball-shaped particle prepared through proportioning, pressure atomization, seasoning, it can be collapsed and dispersed into suspending liquid at the presence of water.
Description
Technical field
The present invention relates to the mancozeb formulation of agricultural bactericidal and the improvement of manufacture method thereof.
Background technology
At present, agricultural bactericidal medicine mancozeb has only wetting powder and two kinds of formulations of mancozeb suspending agent of mancozeb on the domestic market.Mancozeb wettable powder is traditional solid dosage forms, because its fine size medicament dust from flying phenomenon all can occur containing in production and the use, not only directly endangers human and livestock health, and causes environmental pollution.Generation for fear of above-mentioned phenomenon has formed mancozeb suspending agent through improvement.In other words solid dosage is reprocessed into dispersible liquid preparation in the water, the only several μ m of its average grain diameter, suspensibility height, good drug efficacy are accepted by the user soon.But also occurred certain problem in the popularization process, the prescription of mancozeb suspending agent and technology are than mancozeb wettable powder complexity, and the factor that influences quality is more.Deposited for a long time, just layering, precipitation and caking phenomenon can occur, and packaging material are difficult for handling.It is big to add Packing Unit, brings inconvenience for storage, transportation.Agricultural mancozeb product is faced with further improved problem.
Summary of the invention
In order to remedy the deficiency of mancozeb wettable powder and mancozeb suspending agent, the object of the present invention is to provide a kind of novel form of disinfectant use in agriculture mancozeb water-dispersible granules, also can be described as dry suspending agent.Its chance water of designing requirement can disintegration be dispersed into suspension.This formulation good flowing properties, easy to use, be difficult for during application producing dust from flying, the storage process good stability has the advantage of mancozeb wettable powder and mancozeb suspending agent.
Technical scheme of the present invention is to make novel form have dispersiveness in the water identical with pulvis, does not make its basic granules diameter too little again.For realizing above technical goal, novel form is designed to the hollow ball-shape particulate form, and diameter remains between the 20-800 μ m, and wherein the weight ratio of mancozeb active ingredient is between 40-90%, to adapt to user's requirement different to pesticide concentration.For realizing above purpose of design, hollow bead spray shaping of the present invention agent should take following active ingredient to form (percentage by weight) through repetition test:
Mancozeb 40-90%
Wetting agent 1-20%
Dispersant 1-20%
Bonding agent 0.1-5%
Stabilizing agent 1-5%
Filler (user is to the medicine content requirement) surplus.
The adding of wetting agent and dispersant makes the easy moulding of formed particle, dissolves effect but produce very fast dispersion after adding entry.Adhesive and stabilizing agent are used for granule moulding of hollow bead shape and stable in properties, adapt to preserve and transportation environment.The adding of filler is to adjust the effective content of mancozeb to adapt to different purposes and client's needs.Wherein the mancozeb raw material wet feed taking to be generated in the ordinary student production. art is because the needs of operations such as making beating are arranged, but the water content of formulation should be less than 3% during the final drying moulding.
The mancozeb water-dispersible granules is processed required primary raw material from the wet feed in the mancozeb ordinary student production. art, makes water content at 20-40% through primary dewatering earlier.Calculating effective ingredient and convert by above matching principle then becomes the amount that adds prescription, and then adds the above auxiliary agent, through making beating, grinds, and the spray drying granulation moulding is again through promptly forming finished product after the screening.
Further specify below in conjunction with given embodiment and the objective of the invention is how to realize.
Specific implementation method
Said wetting agent specifically can adopt and draw back powder in the above-mentioned component ratio, or dibutyl bitter edible plant sodium sulfonate, or dodecyl sodium sulfate, or the calcium salt of above three kinds of acid groups, perhaps takes above two or more mixture.Or the YUS-SC2 (emulsifier) of employing import.
Said dispersion specifically can be taked lignin in the above-mentioned component, or sodium sulfonate, or sulfoacid calcium, or sodium silicate, or one or more the mixture in the sodium phosphate trimer, or adopts import NNO, or D425 (U.S.'s product).
Said binding agent specifically can adopt xanthans in the above-mentioned component, or polyvinyl alcohol, or hydroxyethylcellulose or polyacrylic acid receive, or polyacrylamide, or aluminium-magnesium silicate.
Said stabilizing agent is specifically taked ethylene glycol in the above-mentioned component, or methenamine, or sodium pyrosulfite or pyrosulfurous acid calcium, potassium metabisulfite.
Said filler specifically can be taked diatomite in the above-mentioned component, or bentonite, or kaolin, or a kind of, two or more mixture in white carbon or the precipitated calcium carbonate.
Below provide specific embodiment (by weight percentage):
| Embodiment | Mancozeb | Wetting agent | Dispersant | Binding agent | Stabilizing agent | Filler |
| ????1 | ????40 | ????20 | ????20 | ????5 | ????5 | ??10 |
| ????2 | ????50 | ????14 | ????20 | ????2 | ????4 | ??10 |
| ????3 | ????60 | ????8 | ????19 | ????1 | ????2 | ??10 |
| ????4 | ????70 | ????6 | ????15 | ????1 | ????1 | ??7 |
| ????5 | ????80 | ????4 | ????8.5 | ????0.5 | ????1 | ??6 |
| ????6 | ????90 | ????1 | ????1 | ????0.1 | ????1 | ??6.9 |
Formulation of the present invention takes following technical process manufacturing to finish:
At first make its water content between 20-40% the mancozeb wet feed dehydration that is generated in the common process.
By the percentage preparation raw material of following composition by weight, wherein the mancozeb wet feed is by following effective content, and corresponding amount is converted during with moisture 20-40% wet feed.
Mancozeb 40-90%
Wetting agent 1-20%
Dispersant 1-20%
Bonding agent 0.1-5%
Stabilizing agent 1-5%
The filler surplus
Specifically choosing which kind of reagent and weight ratio can carry out with reference to above explanation and embodiment.
Making beating: promptly form slip by fully stirring.
Grind to form slip: the slurry that stirs is further ground refinement, and the granularity that makes mancozeb is less than 10 μ m.
Mancozeb 40-90%
Wetting agent 1-20%
Dispersant 1-20%
Bonding agent 0.1-5%
Stabilizing agent 1-5%
Filler (user is to the medicine content requirement) surplus.
The adding of wetting agent and dispersant makes the easy moulding of formed particle, dissolves effect but produce very fast dispersion after adding entry.Adhesive and stabilizing agent are used for granule moulding of hollow bead shape and stable in properties, adapt to preserve and transportation environment.The adding of filler is to adjust the effective content of mancozeb to adapt to different purposes and client's needs.Wherein the mancozeb raw material wet feed taking to be generated in the ordinary student production. art is because the needs of operations such as making beating are arranged, but the water content of formulation should be less than 3% during the final drying moulding.
The mancozeb water-dispersible granules is processed required primary raw material from the wet feed in the mancozeb ordinary student production. art, makes water content at 20-40% through primary dewatering earlier.Calculating effective ingredient and convert by above matching principle then becomes the amount that adds prescription, and then adds the above auxiliary agent, through making beating, grinds, and the spray drying granulation moulding is again through promptly forming finished product after the screening.
Further specify below in conjunction with given embodiment and the objective of the invention is how to realize.
Specific implementation method
Said wetting agent specifically can adopt and draw back powder in the above-mentioned component ratio, or dibutyl bitter edible plant sodium sulfonate, or dodecyl sodium sulfate, or the calcium salt of above three kinds of acid groups, perhaps takes above two or more mixture.Or the YUS-SC2 (emulsifier) of employing import.
Said dispersion specifically can be taked lignin in the above-mentioned component, or sodium sulfonate, or sulfoacid calcium, or sodium silicate, or one or more the mixture in the sodium phosphate trimer, or adopts import NNO, or D425 (U.S.'s product).
Said binding agent specifically can adopt xanthans in the above-mentioned component, or polyvinyl alcohol, or hydroxyethylcellulose or polyacrylic acid receive, or polyacrylamide, or aluminium-magnesium silicate.
Said stabilizing agent is specifically taked ethylene glycol in the above-mentioned component, or methenamine, or sodium pyrosulfite or pyrosulfurous acid calcium, potassium metabisulfite.
Atomized drying: by slurry pressure atomization drying equipment is formed the hollow sphere graininess with ground slurry at the indoor drying and dehydrating that carries out of atomized drying.Plus-pressure 5-25MPa, drying sprays into 150 ℃-350 ℃ of inlet temperatures, 50 ℃-150 ℃ of outlet temperatures.
Be distributed into product by sizing, bigger particle and less all can return pulping process, granularity is can between 20-800 μ m.
It is quick-fried that the water-based decentralized granula of making by above proportioning and operation is difficult for producing ash in application, good dispersion in the entry, and dissolving is evenly.Now not only protected environment and operation peasant's physical and mental health greatly, and can utilize pesticide active ingredient to greatest extent, such agricultural chemicals has been applied realistic meaning with particular importance with can now dissolving in medicament.
Claims (10)
1, mancozeb water-dispersible granules is characterized in that this granula is made up of following percentage by weight:
Mancozeb 40-90%,
Wetting agent 1-20%,
Dispersant 1-20%,
Bonding agent 0.1-5%,
Stabilizing agent 1-5%,
The filler surplus.
2, according to the said mancozeb water-dispersible granules of claim 1, it is characterized in that said wetting agent is for drawing back powder, or dibutyl bitter edible plant sodium sulfonate, or neopelex or lauryl sodium sulfate, or the calcium salt of above acid group, or take the wherein mixture of two or more material.
3, according to the said mancozeb water-dispersible granules of claim 1, it is characterized in that said dispersant is a lignin, or sodium sulfonate, or sodium silicate, or one or more the mixture in the sodium phosphate trimer.
4, according to the said mancozeb water-dispersible granules of claim 1, it is characterized in that said binding agent is an xanthans, or polyvinyl alcohol, or hyetellose, or Sodium Polyacrylate, or polyacrylamide, or aluminium-magnesium silicate.
5, according to the agent of the said mancozeb water dispersible of claim 1, it is characterized in that said stabilizing agent is an ethylene glycol, or methenamine, or sodium pyrosulfite, or pyrosulfurous acid calcium, or a kind of, two or more mixture in the potassium metabisulfite.
6, according to the said mancozeb water-dispersible granules of claim 1, it is characterized in that said filler is a diatomite, or bentonite, or kaolin, or white carbon, or a kind of in the precipitated calcium carbonate, or two or more mixture.
7,, it is characterized in that this granula is the hollow ball-shape body of diameter 20-800 μ m according to the said mancozeb water-dispersible granules of claim 1.
8, the manufacture method of mancozeb water-dispersible granules is characterized in that this manufacture method carries out according to the following steps
(1) make its water content between 20-40% the dehydration of mancozeb wet feed,
(2) will dewater the mancozeb wet feed with effective content conversion back by following formulation ratio:
Mancozeb 40-90%,
Wetting agent 1-20%,
Dispersant 1-20%,
Bonding agent 0.1-5%,
Stabilizing agent 1-5%,
The filler surplus,
(3) making beating,
(4) grind to form slip,
(5) atomized drying,
(6) be distributed into product by sizing.
9, the manufacture method of said according to Claim 8 mancozeb water-dispersible granules is characterized in that in grinding to form the manufacturing procedure of slurry, and the granularity of mancozeb should be less than 10 μ m.
10, the manufacture method of said according to Claim 8 mancozeb water-dispersible granules is characterized in that the process conditions that the atomized drying operation is used are: pressure 5-25MPa, 150 ℃-350 ℃ of inlet temperatures, 50 ℃-150 ℃ of outlet temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101097078A CN1545878A (en) | 2003-12-17 | 2003-12-17 | Mancozeb water dispersibility granule and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101097078A CN1545878A (en) | 2003-12-17 | 2003-12-17 | Mancozeb water dispersibility granule and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1545878A true CN1545878A (en) | 2004-11-17 |
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| CNA2003101097078A Pending CN1545878A (en) | 2003-12-17 | 2003-12-17 | Mancozeb water dispersibility granule and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100551240C (en) * | 2006-10-27 | 2009-10-21 | 陕西上格之路生物科学有限公司 | A kind of water dispersion granules agent of dithane |
| CN102302006A (en) * | 2011-05-30 | 2012-01-04 | 李义德 | Application technology of novel chemical bactericide for preventing and controlling cotton fusarium wilt |
| CN103583538A (en) * | 2013-10-14 | 2014-02-19 | 广东中迅农科股份有限公司 | Flame-retardant-containing mancozeb wettable powder |
| CN107006461A (en) * | 2017-05-19 | 2017-08-04 | 发事达(南通)化工有限公司 | A kind of preparation method of pesticide water dispersible granules |
| CN107535521A (en) * | 2017-10-30 | 2018-01-05 | 利民化工股份有限公司 | A kind of mancopper water dispersible granules and preparation method thereof, application |
| CN113950246A (en) * | 2019-06-15 | 2022-01-18 | 拜耳公司 | Stable formulations of dithiocarbamates |
-
2003
- 2003-12-17 CN CNA2003101097078A patent/CN1545878A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100551240C (en) * | 2006-10-27 | 2009-10-21 | 陕西上格之路生物科学有限公司 | A kind of water dispersion granules agent of dithane |
| CN102302006A (en) * | 2011-05-30 | 2012-01-04 | 李义德 | Application technology of novel chemical bactericide for preventing and controlling cotton fusarium wilt |
| CN103583538A (en) * | 2013-10-14 | 2014-02-19 | 广东中迅农科股份有限公司 | Flame-retardant-containing mancozeb wettable powder |
| CN107006461A (en) * | 2017-05-19 | 2017-08-04 | 发事达(南通)化工有限公司 | A kind of preparation method of pesticide water dispersible granules |
| CN107535521A (en) * | 2017-10-30 | 2018-01-05 | 利民化工股份有限公司 | A kind of mancopper water dispersible granules and preparation method thereof, application |
| CN113950246A (en) * | 2019-06-15 | 2022-01-18 | 拜耳公司 | Stable formulations of dithiocarbamates |
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