CN102986659A - Granulation method of novel pesticide water dispersible granules - Google Patents
Granulation method of novel pesticide water dispersible granules Download PDFInfo
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- CN102986659A CN102986659A CN 201110268519 CN201110268519A CN102986659A CN 102986659 A CN102986659 A CN 102986659A CN 201110268519 CN201110268519 CN 201110268519 CN 201110268519 A CN201110268519 A CN 201110268519A CN 102986659 A CN102986659 A CN 102986659A
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- water dispersible
- water
- dispersible granules
- agent
- aqueous suspension
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004562 water dispersible granule Substances 0.000 title claims abstract description 23
- 239000000575 pesticide Substances 0.000 title claims abstract description 14
- 238000005469 granulation Methods 0.000 title claims abstract description 11
- 230000003179 granulation Effects 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- 238000009736 wetting Methods 0.000 claims description 14
- 239000007900 aqueous suspension Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 239000003905 agrochemical Substances 0.000 claims description 6
- 239000007884 disintegrant Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000084 Gum arabic Polymers 0.000 claims description 3
- 241000978776 Senegalia senegal Species 0.000 claims description 3
- 239000000205 acacia gum Substances 0.000 claims description 3
- 235000010489 acacia gum Nutrition 0.000 claims description 3
- 229960003511 macrogol Drugs 0.000 claims description 3
- 229920001285 xanthan gum Polymers 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000375 suspending agent Substances 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000004898 kneading Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000004563 wettable powder Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- -1 thiazolinyl phenol Chemical compound 0.000 description 16
- 239000007859 condensation product Substances 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 235000015424 sodium Nutrition 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 5
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- NWWZPOKUUAIXIW-DHZHZOJOSA-N (E)-thiamethoxam Chemical compound [O-][N+](=O)/N=C/1N(C)COCN\1CC1=CN=C(Cl)S1 NWWZPOKUUAIXIW-DHZHZOJOSA-N 0.000 description 4
- 239000005906 Imidacloprid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000004009 herbicide Substances 0.000 description 4
- YWTYJOPNNQFBPC-UHFFFAOYSA-N imidacloprid Chemical compound [O-][N+](=O)\N=C1/NCCN1CC1=CC=C(Cl)N=C1 YWTYJOPNNQFBPC-UHFFFAOYSA-N 0.000 description 4
- 229940056881 imidacloprid Drugs 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 229940077388 benzenesulfonate Drugs 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000002552 dosage form Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000002363 herbicidal effect Effects 0.000 description 2
- 239000002917 insecticide Substances 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- YZHUMGUJCQRKBT-UHFFFAOYSA-M sodium chlorate Chemical compound [Na+].[O-]Cl(=O)=O YZHUMGUJCQRKBT-UHFFFAOYSA-M 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000005472 Bensulfuron methyl Substances 0.000 description 1
- 229920005682 EO-PO block copolymer Polymers 0.000 description 1
- 239000005584 Metsulfuron-methyl Substances 0.000 description 1
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical group COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000000853 biopesticidal effect Effects 0.000 description 1
- UDHMTPILEWBIQI-UHFFFAOYSA-N butyl naphthalene-1-sulfonate;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(=O)OCCCC)=CC=CC2=C1 UDHMTPILEWBIQI-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000009477 fluid bed granulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical group COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- KKDONKAYVYTWGY-UHFFFAOYSA-M sodium;2-(methylamino)ethanesulfonate Chemical compound [Na+].CNCCS([O-])(=O)=O KKDONKAYVYTWGY-UHFFFAOYSA-M 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- YMXOXAPKZDWXLY-QWRGUYRKSA-N tribenuron methyl Chemical group COC(=O)[C@H]1CCCC[C@@H]1S(=O)(=O)NC(=O)N(C)C1=NC(C)=NC(OC)=N1 YMXOXAPKZDWXLY-QWRGUYRKSA-N 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a granulation method of a novel pesticide water dispersible granule, which aims to overcome the defects of a wet method and a dry method granulation as far as possible and combine the advantages of the two methods as far as possible, so as to achieve the purposes of saving energy, reducing pollution to the environment and improving the product performance by combining the dry method and the wet method. The key step is that the step of kneading water, a binder and wettable powder in a dry method is changed into the step of directly adding the aqueous suspending agent with the highest proportion as possible under the condition of not influencing the performance of extrusion granulation, so that the processed water dispersible granule has smaller particle size when dispersed in water, more environment-friendly and energy-saving production process and better suspension rate and dispersibility in water.
Description
Technical field
The invention belongs to formulations of pesticide field, the present invention relates to the manufacture method of the pesticide water dispersible granules such as a kind of novel insecticide, bactericide, weed killer herbicide.
Background technology
In a sense, water dispersible granules is the reprocessing on wetting powder or aqueous suspension agent basis.Its Recipe requires high, and manufacturing procedure is comparatively complicated.However because it has compared high-definition characteristic with conventional dosage forms, therefore quite favored.(1) water dispersible granules has widely adaptability to pesticide species and formulation content.(2) water dispersible granules has good matching to the super-high-efficient agricultural chemicals.(3) the water-dispersible grain agent producing process has diversity.That adopts at present usually has extruder grain, fluid-bed granulation, disk granulation, a mist projection granulating etc., and process choice is fully according to the physical and chemical performance of process agricultural chemicals, the machining process route of definite the best.(4) water dispersible granules has friendly to environment.The pollution of current chemical pesticide has become a serious social concern, in biopesticide complete today of substituting chemical pesticide also, how to reduce to greatest extent chemical pesticide to the pollution of environment, and it is very urgent to have become.
The distinct characteristic of these of water dispersible granules has determined that it has the not available unique advantage of conventional dosage forms, does not have dust from flying that is:, has reduced the pollution to environment, to user's safety, and can make that the toxic articles kind is low to be poisoned; Compare with suspending agent with wetting powder, active constituent content is high, and the product relative density is large, and volume is little, is convenient to packing, stores and transportation; Bin stability and physical and chemical stability are better, particularly to unsettled agricultural chemicals in water, make this formulation ensures active ingredient than suspending agent stability.
The prilling process of water dispersible granules is divided into " wet method " and " dry method "." wet method " is that former medicine, auxiliary agent, filler and water are mixed into suspension, carries out mist projection granulating again.The advantage of this technique be in the process of suspending agent without dust to the pollution of environment, can reduce energy consumption than wetting powder when making former medicine particle reach identical fineness, the suspensibility of product in water and dispersed relatively good; Shortcoming is in the mist projection granulating stage, will consume very high-energy because needing the TRANSIENT HIGH TEMPERATURE drying, and the finished granule rate is also low than " dry method " simultaneously; Some pesticide species can't adapt to the condition of high-temperature spray to thermo-responsive, and this has limited to the selectivity of processing technology greatly." dry method " is former medicine to be mixed with auxiliary agent, filler through ultramicro grinding make wetting powder, then adds suitable water and binding agent, disintegrant carries out extruder grain.The advantage of this technique is that the granulation stage is simple fast, free from environmental pollution, and energy consumption is low, and the finished granule rate is high; Shortcoming is more serious to the damage ratio of environment at wettable powder process segment dust, and energy consumption is high, and former powder directly is difficult to reach the fineness that is processed into aqueous suspension agent, and the suspensibility of product in water is about 80%, and dispersiveness is also poor;
Summary of the invention
The objective of the invention is to overcome as much as possible some shortcomings that two kinds of methods of " wet method " and " dry method " granulation exist separately, as much as possible do not combine simultaneously person's advantage, " doing wet method " of " dry method " and " wet method " the two combination saved the energy to reach, reduced the pollution of environment, the purpose of enhancing product performance.Its committed step is that the step that adds water, binding agent and wetting powder kneading in " dry method " is changed under the condition of the performance that does not affect extruding pelletization, directly add a high proportion of as far as possible aqueous suspension agent, thereby the particle diameter the when water dispersible granules that processes is disperseed is less, more environmental protection of production process, energy-conservation, while have more excellent suspensibility and dispersiveness in water in water.
Purpose of the present invention can reach by following measures:
A kind of new prilling process of water dispersible granules.At first former medicine, auxiliary agent, filler etc. are made ultra-fine wetting powder, its fineness is 800～1000 orders; Secondly former medicine, auxiliary agent, water etc. are ground through sand mill and make aqueous suspension agent, particle size range is 1～3um.Then wetting powder, aqueous suspension agent, disintegrant are added in the kneader simultaneously and mediate, make plastic material, at last this material is sent into Squeezinggranulator, carry out granulation, by drying, screening obtains the water dispersible granules product.The percentage of its each composition is:
Its Central Plains cartridge bag is drawn together the agricultural chemicals such as various insecticides, bactericide, weed killer herbicide, such as Diacloden, first dimension salt, Imidacloprid, tribenuron-methyl, metsulfuron-methyl, bensulfuron-methyl, tpn etc.
The optional dispersant with water dispersible granules of dispersant wherein is such as lignosulfonates, alkylnaphthalene sulfonate, alkylbenzenesulfonate, naphthalene sulfonic acids and formaldehyde condensation products, thiazolinyl phenol polyethenoxy ether, alkylphenol-polyethenoxy polypropylene ether, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkylphenol polyoxyethylene formaldehyde condensation products, polyoxyethylene carboxylate, petroleum sodium sulfonate etc.Preferred dispersant has lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, fatty alcohol-polyoxyethylene ether, aliphatic alcohol sodium sulfate, ethylene oxide propylene oxide block copolymer.
Wherein disintegrant can be selected the disintegrant of common moisture shot agent, such as starch, mineral salt, sodium carboxymethyl starch or polyvidone etc.Wherein preferred disintegrant is the mineral salt such as sodium sulphate, ammonium sulfate, ammonium chloride, sodium chloride or sodium chloride.
Wherein wetting agent can be selected the wetting agent of water dispersible granules commonly used; such as aliphatic alcohol sulfate; the a-alkene sulfonate; sodium alkyl sulfate; naphthalene sulfonic acid-formaldehyde condensation product; the styryl phenol polyethenoxy ether; alkylaryl polyoxyethylene polypropylene ether; fatty acid amide N methyl taurine sodium salt; alkylphenol polyoxyethylene; fatty alcohol-polyoxyethylene ether; alkyl sulfonic acid salt anionic surfactant or phosphate type anion surfactant etc., the moistening neopelex that is of excellent usefulness; lauryl sodium sulfate; to the basic sodium sulfonate of methoxyl group fatty acid amide or sodium butylnaphthalenesulfonate.
Wherein binding agent can be selected the binding agent of common moisture shot agent, such as xanthans, gum Arabic, cellulose base compound or starch compound etc.Preferred binding agent is sodium carboxymethylcellulose, xanthans, polyvinyl alcohol, polyethylene glycol, Ac-Di-Sol or gum Arabic.
Wherein filler can be selected the filler of common moisture shot agent, such as bentonite, white carbon, carclazyte, kaolin, mineral salt etc., and preferred filler precipitated calcium carbonate, sodium sulphate or urea etc.
The inventive method has enlarged that the employing extruder grain is made the pesticide water dispersible granule kind, dust pollution when having reduced production and processing, saved the energy.
Embodiment
Embodiment 1:
With Diacloden 6.26 gram, neopelex 0.1 gram, naphthalene sulfonic acid-formaldehyde condensation product 0.3 gram, precipitated calcium carbonate 3.34 grams, after they are mixed, after airslide disintegrating mill is pulverized fineness is 800-1000 purpose wetting powder; Then Diacloden 15.66 grams, silicone defoaming agent 1 gram, Macrogol 6000 one gram, neopelex 0.25 gram, naphthalene sulfonic acid-formaldehyde condensation product 1 gram, water 31.09 grams were ground 2.5 hours in sand mill, can obtain the aqueous suspension agent of 1-3um.At last the above-mentioned aqueous suspension agent of 3 grams, the above-mentioned wetting powder of 4.3 grams, 0.4 gram ammonium chloride are added in the kneader and mediate; make plastic material; at last this material is sent into the rotary extrusion comminutor; carry out granulation; by drying; screening obtains 60.13% Diacloden water dispersible granules finished product, suspensibility 94.13%, and dispersive property is excellent.
Embodiment 2
With Imidacloprid 6.25 gram, sodium alkyl benzene sulfonate 0.2 gram, naphthalene sulfonic acid-formaldehyde condensation product 0.5 gram, precipitated calcium carbonate 3.05 grams, after they are mixed, after airslide disintegrating mill is pulverized fineness is 800-1000 purpose wetting powder; Then Imidacloprid 15.62 grams, silicone defoaming agent 1 gram, Macrogol 6000 one gram, sodium alkyl benzene sulfonate 0.8 gram, naphthalene sulfonic acid-formaldehyde condensation product 2 grams, water 29.58 grams were ground 2.5 hours in sand mill, can obtain the aqueous suspension agent of 1-3um.At last the above-mentioned aqueous suspension agent of 3 grams, the above-mentioned wetting powder of 4.3 grams, 0.4 gram ammonium chloride are added in the kneader and mediate; make plastic material; at last this material is sent into the rotary extrusion comminutor; carry out granulation; by drying; screening obtains 58.73% imidacloprid water dispersible granule finished product, suspensibility 92.33%, and dispersive property is excellent.
Claims (3)
1. the prilling process of a novel agrochemical water dispersible granules is characterized in that a certain proportion of pesticide original medicine, auxiliary agent, filler etc. are made ultra-fine wetting powder; Simultaneously remaining pesticide original medicine, auxiliary agent, water, binding agent etc. are ground through sand mill and make aqueous suspension agent.Then wetting powder, aqueous suspension agent, disintegrant are added in the kneader simultaneously according to certain ratio and mediate, make plastic material, at last this material is sent into Squeezinggranulator, carry out granulation, by drying, screening obtains the water dispersible granules product.
2. the prilling process of pesticide water dispersible granules according to claim 1 is characterized in that water, binding agent, auxiliary agent directly grind to obtain particle diameter 1～5um aqueous suspension agent that the ratio of its consumption and wetting powder weight is 1: 0.5～1.35 in sand mill.
According to claim 1 with the prilling process of 2 described pesticide water dispersible granules, it is characterized in that described binding agent is Macrogol 2000-6000, xanthans, polyvinyl alcohol, gum Arabic, sodium carboxymethylcellulose, Magnesiumaluminumsilicate, Sodium Polyacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268519 CN102986659A (en) | 2011-09-08 | 2011-09-08 | Granulation method of novel pesticide water dispersible granules |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268519 CN102986659A (en) | 2011-09-08 | 2011-09-08 | Granulation method of novel pesticide water dispersible granules |
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| CN102986659A true CN102986659A (en) | 2013-03-27 |
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| CN 201110268519 Pending CN102986659A (en) | 2011-09-08 | 2011-09-08 | Granulation method of novel pesticide water dispersible granules |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105248445A (en) * | 2015-11-16 | 2016-01-20 | 河北德瑞化工有限公司 | Slow-release thiamethoxam water dispersible granule and preparing method thereof |
| 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 |
| CN115316396A (en) * | 2022-09-19 | 2022-11-11 | 镇江先锋植保科技有限公司 | Preparation process and application method of cloransulam-methyl and sulfentrazone composition |
-
2011
- 2011-09-08 CN CN 201110268519 patent/CN102986659A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105248445A (en) * | 2015-11-16 | 2016-01-20 | 河北德瑞化工有限公司 | Slow-release thiamethoxam water dispersible granule and preparing method thereof |
| 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 |
| CN115316396A (en) * | 2022-09-19 | 2022-11-11 | 镇江先锋植保科技有限公司 | Preparation process and application method of cloransulam-methyl and sulfentrazone composition |
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Application publication date: 20130327 |