CN101530092A - Method for preparing acetamiprid water dispersible granules - Google Patents
Method for preparing acetamiprid water dispersible granules Download PDFInfo
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- CN101530092A CN101530092A CN200810101957A CN200810101957A CN101530092A CN 101530092 A CN101530092 A CN 101530092A CN 200810101957 A CN200810101957 A CN 200810101957A CN 200810101957 A CN200810101957 A CN 200810101957A CN 101530092 A CN101530092 A CN 101530092A
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- acetamiprid
- water dispersible
- dispersible granules
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- acetamiprid water
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Abstract
The invention discloses a pesticide preparation, and in particular relates to a method for preparing acetamiprid water dispersible granules. The acetamiprid water dispersible granules are in regular or irregular granular forms, wherein the content (weight percentage) of the acetamiprid is 30 to 80 percent. The method comprises the following steps that: an acetamiprid active compound is added and mixed with a wetter, a dispersant, a disintegrating agent, a thinner and a binder in a certain proportion; the mixture is uniformly stirred and ground to produce concentrated powder; the concentrated powder is added and uniformly mixed with deionized water in a certain proportion; the uniform mixture is made into grains; and the grains are dried and passed through a sieve and the acetamiprid water dispersible granules are obtained. The acetamiprid water dispersible granules overcome the drawbacks of suspending agents and wettable powder and reduce the using cost for peasants and environmental pollution in processing and using processes. The acetamiprid water dispersible granules have the advantages of high active ingredient content, quick disintegration, good dispersivity, stable heat-storing performance, and the like due to the addition of additives with different ingredients, and have high pest-killing efficiency and high safety during use.
Description
Technical field
The present invention relates to a kind of agricultural chemical insecticide, relate to a kind of preparation method of acetamiprid water dispersible granules specifically.
Technical background
Water dispersible granules (WDG) is a kind of pesticides new formulation that grows up the America and Europe early 1980s, and international pesticide industry federation of association (GIFAP) is defined as it: the granule that use disintegration and dispersion back in water.WDG mainly is made up of pesticide active ingredient, dispersant, wetting agent, adhesive, disintegrant and filler, particle diameter 200-500um, and disintegration rapidly after the entry disperses, and forms the higher suspension dispersion.
The formulations of pesticide such as missible oil, wetting powder, pulvis, granule account for 80% in China's preparation total amount.Along with the development of processing formulation, the shortcoming of conventional dosage forms is apparent more outstanding.Missible oil is still a kind of formulation of a large amount of uses, and main cause is that the missible oil preparation is easier to relatively, and the preparation function admirable is easy to use.But contain organic solvents such as a large amount of toluene, dimethylbenzene in the missible oil, it is reported and not only environment has been caused year about 300,000 t of use more serious pollution, and the petrochemical industry resource has been caused waste, caused people's extensive concern.Wetting powder accounts for 1/4 in whole formulation total amount, compare with missible oil, wetting powder is used organic solvent less, but because its fineness is very thin, the dust from flying phenomenon often occurs in production and the use, not only endanger people's health, also can cause environmental pollution, especially some high activity weed killer herbicides, low amounts of dust fly upward to be easy to make does the deposits yields poisoning.Pulvis subject matter is the dust drift, and volume is big, is difficult for metering, only is used for arid area and some particular places now.To be that high-toxic pesticide is low poison the granule characteristics, prolong the lasting period, but the scope of application is narrow, mostly is the root dispenser, mainly prevents and treats soil insect.WDG has effectively avoided the weak point of these conventional dosage forms, draws and utilized its characteristics, develops very rapid.At present, in some developed countries, the prescription of WDG and technology are ripe, and product increases gradually, and the trend that replaces wetting powder is arranged greatly.
Compare with traditional formulations of pesticide, WDG mainly contains following advantage.Solved missible oil with toluene, dimethylbenzene etc. as solvent cause through toxicity problems such as skins, to operator's safety; The active constituent content height, content can reach 80%-90%, easily metering, transportation, it is convenient to store; No dust from flying has reduced the pollution to environment; The entry easy disintegrating, good dispersion, suspensibility height; Suspension is good again, and the soup for preparing did not use up the same day, can suspend again through stirring in the 2nd day, does not influence application; To some unsettled former medicines in water, it is good than suspending agent to make the WDG effect.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of acetamiprid water dispersible granules.
Another object of the present invention is exactly in order to overcome the environmental pollution that exists in the prior art, to be detrimental to health and shortcoming such as use cost height and a kind of high-load of developing, environment-friendly type, availability height, and acetamiprid water dispersible granules easy to use and component content thereof.Water dispersible granules is to grow up on the basis of wetting powder and suspending agent, this formulation has overcome the shortcoming of suspending agent and wetting powder, had both the low advantage of environmental protection and use cost, in processing and use, having reduced the pollution of environment and reduced peasant's use cost, is a main trend of present pesticidal preparations formulation development.
The objective of the invention is to realize by following technical scheme:
Effectively becoming of acetamiprid water dispersible granules is Acetamiprid, makes rule or irregular particle by the former medicine of Acetamiprid and wetting agent, dispersant, disintegrant, carrier, binding agent hybrid process, and the content of Acetamiprid is 30%-80% (percentage by weight).
Wherein: wetting agent is selected from alkylnaphthalene sulfonate (BX), alkylsulfonate, sodium alkyl sulfate (K12), sodium alkyl benzene sulfonate (ABS-Na), alkyl phosphoric acid sodium, alkylphenol-polyethenoxy base sodium sulphate, alkylsulfonate, the alkyl naphthalene formaldehyde condensate sulfonates, the polyoxyethylene sulfonated hydrocarbon, fatty alcohol ethylene oxide adduct sulfonate, the alkylphenol formaldehyde condensation product, ethylene oxide adduct sulfonate, the alkylphenol polyoxyethylene formaldehyde condensation products, polyoxyethylene polyoxy third rare ether block copolymers, in lignin and the derivative sulfonate thereof one or more.
Dispersant is selected from Fluhyzon formaldehyde condensation products (NNO), alkylphenol polyoxyethylene formaldehyde condensation products sodium sulphate, sodium lignin sulfonate, calcium lignosulfonate, polycarboxylate (2700), polycarboxylate, phosphate, sulphate, polyoxyethylene polyoxy third rare ether block copolymers, one or more in the alkyl phenolic group polyoxyethylene groups phosphate.
Carrier is selected from one or more in kaolin, precipitated calcium carbonate, the diatomite.
Disintegrant is selected from one or more in starch, sodium sulphate, sulfuric acid amine, white carbon, the attapulgite.
Binding agent is selected from one or more in denaturated sodium polyacrylate 80, polyethylene glycol 72, modified polyvinyl alcohol 3, lignin 54, CMC, the polyvinyl alcohol.
This formulation is easy to use except having, and cheap, drug effect is fast, to outside user and the Environmental security, and also have characteristics: the disintegration rate of (1) particle is fast;
(2) dispersed uniformly;
(3) there is not bulky grain after the dispersion, not blocking sprayer;
(4) good suspension stability;
(5) good fluidity;
(6) there is not dust;
(7) bin stability height;
(8) foam seldom;
(9) soup has good wetting property, permeability and plate-out ability;
(10) packing is suitable, need not the edge of a field metering;
(11) the papery packing be can use, recycling of packaging and secondary pollution avoided;
The present invention makes the present invention have the active component content height owing to added the auxiliary agent of heterogeneity, and environmental pollution is little, and disintegration rate is fast, and dispersive property reaches heat storage steady performance well, insecticidal efficacy height in use, and safety is good.
Embodiment
Below provide more examples that the present invention is done detailed explanation:
Example 1
30% acetamiprid water dispersible granules.Take by weighing the former medicine 30% of Acetamiprid, wetting agent alkylsulfonate 3%, dispersant alkylphenol polyoxyethylene formaldehyde condensation products sodium sulphate 6%, disintegrant sulfuric acid amine 25%, binding agent polyethylene glycol 2%, kaolin supplies 100%, it is pressed conventional method mix, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, granulation then, oven dry, sieving obtains about 30% acetamiprid water dispersible granules.Through check active constituent content 30.1%, moisture 2.0%, screening (by the 75um sieve) 99%, suspensibility 91%, lasting foaming characteristic (1min) 10mL, wetability≤1min, the acceleration heat storage stability is qualified.
Example 2
40% acetamiprid water dispersible granules.Take by weighing the former medicine 40% of Acetamiprid, wetting agent alkylsulfonate 3%, dispersant polycarboxylate 6%, disintegrant sulfuric acid amine 25%, binding agent polyethylene glycol 2%, kaolin supplies 100%, it is pressed conventional method mix, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, granulation then, oven dry, sieving obtains about 30% acetamiprid water dispersible granules.Through check active constituent content 40.5%, moisture 1.9%, screening (by the 75um sieve) 97%, suspensibility 89%, lasting foaming characteristic (1min) 10mL, wetability≤1min, the acceleration heat storage stability is qualified.
Example 3
50% acetamiprid water dispersible granules.Take by weighing the former medicine 50% of Acetamiprid, wetting agent alkyl naphthalene formaldehyde condensate sulfonates 3%, dispersant polycarboxylate 6%, disintegrant sulfuric acid amine 20%, binding agent polyethylene glycol 2%, kaolin supplies 100%, it is pressed conventional method mix, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, granulation then, oven dry, sieving obtains about 50% acetamiprid water dispersible granules.Through check active constituent content 50.3%, moisture 2.1%, screening (by the 75um sieve) 97%, suspensibility 85%, lasting foaming characteristic (1min) 10mL, wetability≤1min, the acceleration heat storage stability is qualified.
Example 4
60% acetamiprid water dispersible granules.Take by weighing the former medicine 60% of Acetamiprid, wetting agent alkyl naphthalene formaldehyde condensate sulfonates 4%, dispersant calcium lignosulfonate 6%, disintegrant sulfuric acid amine 20%, binding agent polyethylene glycol 2%, precipitated calcium carbonate supplies 100%, it is pressed conventional method mix, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, granulation then, oven dry, sieving obtains about 60% acetamiprid water dispersible granules.Through check active constituent content 60.1%, moisture 2.1%, screening (by the 75um sieve) 96%, suspensibility 89%, lasting foaming characteristic (1min) 10mL, wetability≤1min, the acceleration heat storage stability is qualified.
Embodiment 5
80% acetamiprid water dispersible granules.Take by weighing the former medicine 80% of Acetamiprid, wetting agent ethylene oxide adduct sulfonate 4%, dispersant alkyl phenolic group polyoxyethylene groups phosphate 6%, binding agent polyethylene glycol 0.5%, diatomite supplies 100%, it is pressed conventional method mixes, after stirring, obtain female powder, granulation then through the airslide disintegrating mill pulverizing, oven dry, sieving obtains about 80% acetamiprid water dispersible granules.Through check active constituent content 80.2%, moisture 2.0%, screening (by the 75um sieve) 98%, suspensibility 90%, lasting foaming characteristic (1min) 10mL, wetability≤1min, the acceleration heat storage stability is qualified.
Claims (6)
1. the preparation method of an acetamiprid water dispersible granules, its active ingredient is Acetamiprid, it is characterized in that making rule or irregular particle by the former medicine of Acetamiprid and wetting agent, dispersant, disintegrant, thinner, binding agent hybrid process, the content of Acetamiprid is 30-80% (percentage by weight).
2. acetamiprid water dispersible granules according to claim 1, it is characterized in that wherein: wetting agent is selected from alkylnaphthalene sulfonate (BX), alkylsulfonate, sodium alkyl sulfate 9K12), sodium alkyl benzene sulfonate (ABS-Na), alkyl phosphoric acid sodium, alkylphenol-polyethenoxy base sodium sulphate, alkylsulfonate, the alkyl naphthalene formaldehyde condensate sulfonates, the polyoxyethylene sulfonated hydrocarbon, fatty alcohol ethylene oxide adduct sulfonate, the alkylphenol formaldehyde condensation product, ethylene oxide adduct sulfonate, the alkylphenol polyoxyethylene formaldehyde condensation products, polyoxyethylene polyoxy third rare ether block copolymers, in lignin and the derivative sulfonate thereof one or more.
3. acetamiprid water dispersible granules according to claim 1, it is characterized in that, wherein: dispersant is selected from Fluhyzon formaldehyde condensation products (NNO), alkylphenol polyoxyethylene formaldehyde condensation products sodium sulphate, sodium lignin sulfonate, calcium lignosulfonate, polycarboxylate (2700), polycarboxylate, phosphate, sulphate, polyoxyethylene polyoxy third rare ether block copolymers, one or more in the alkyl phenolic group polyoxyethylene groups phosphate.
4. acetamiprid water dispersible granules according to claim 1 is characterized in that, wherein: carrier is selected from one or more in kaolin, precipitated calcium carbonate, the diatomite.
5. acetamiprid water dispersible granules according to claim 1 is characterized in that, wherein: disintegrant is selected from one or more in starch, sodium sulphate, sulfuric acid amine, white carbon, the attapulgite.
6. acetamiprid water dispersible granules according to claim 1 is characterized in that, wherein: binding agent is selected from one or more in denaturated sodium polyacrylate 80, polyethylene glycol 72, modified polyvinyl alcohol 3, lignin 54, CMC, the polyvinyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810101957XA CN101530092B (en) | 2008-03-14 | 2008-03-14 | Method for preparing acetamiprid water dispersible granules |
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| CN200810101957XA CN101530092B (en) | 2008-03-14 | 2008-03-14 | Method for preparing acetamiprid water dispersible granules |
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| CN101530092A true CN101530092A (en) | 2009-09-16 |
| CN101530092B CN101530092B (en) | 2012-07-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101258849B (en) * | 2008-04-18 | 2011-01-05 | 江苏瑞禾化学有限公司 | Acetamiprid water dispersion granule and preparation thereof |
| CN102919223A (en) * | 2012-11-26 | 2013-02-13 | 上海沪联生物药业（夏邑）股份有限公司 | Acetamiprid water dispersible granules and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015299A (en) * | 2006-11-01 | 2007-08-15 | 张少武 | Water-dispersed granule pesticide composition and making method thereof |
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2008
- 2008-03-14 CN CN200810101957XA patent/CN101530092B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101258849B (en) * | 2008-04-18 | 2011-01-05 | 江苏瑞禾化学有限公司 | Acetamiprid water dispersion granule and preparation thereof |
| CN102919223A (en) * | 2012-11-26 | 2013-02-13 | 上海沪联生物药业（夏邑）股份有限公司 | Acetamiprid water dispersible granules and preparation method thereof |
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| CN101530092B (en) | 2012-07-25 |
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