CN101642099A - Pesticide suspension concentrate with organosilicon surfactant and preparation method thereof - Google Patents
Pesticide suspension concentrate with organosilicon surfactant and preparation method thereof Download PDFInfo
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- CN101642099A CN101642099A CN200910169681A CN200910169681A CN101642099A CN 101642099 A CN101642099 A CN 101642099A CN 200910169681 A CN200910169681 A CN 200910169681A CN 200910169681 A CN200910169681 A CN 200910169681A CN 101642099 A CN101642099 A CN 101642099A
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- Prior art keywords
- agent
- agricultural chemicals
- chemicals suspension
- organic silicon
- suspension agent
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Links
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 239000000575 pesticide Substances 0.000 title abstract description 12
- 239000004546 suspension concentrate Substances 0.000 title abstract 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002270 dispersing agent Substances 0.000 claims abstract description 23
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 239000002562 thickening agent Substances 0.000 claims abstract description 21
- 238000009736 wetting Methods 0.000 claims abstract description 17
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 4
- 239000000375 suspending agent Substances 0.000 claims description 51
- 239000003905 agrochemical Substances 0.000 claims description 35
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 34
- 229910052710 silicon Inorganic materials 0.000 claims description 34
- 239000010703 silicon Substances 0.000 claims description 34
- -1 Affirm (Merck Co.) Chemical compound 0.000 claims description 27
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- 230000000361 pesticidal effect Effects 0.000 claims description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 229920001296 polysiloxane Polymers 0.000 claims description 12
- 239000013530 defoamer Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000005660 Abamectin Substances 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 7
- RRZXIRBKKLTSOM-XPNPUAGNSA-N avermectin B1a Chemical compound C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 RRZXIRBKKLTSOM-XPNPUAGNSA-N 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 claims description 6
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 6
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- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 4
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- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 claims description 4
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- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims description 4
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- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims description 2
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- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 claims description 2
- 239000005760 Difenoconazole Substances 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
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- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 2
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- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 2
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 2
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- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- CXEGAUYXQAKHKJ-NSBHKLITSA-N emamectin B1a Chemical compound C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](NC)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 CXEGAUYXQAKHKJ-NSBHKLITSA-N 0.000 claims description 2
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a pesticide suspension concentrate with organosilicon surfactant and a preparation method thereof. The preparation method comprises the following steps: mixing one or more ofpesticide active ingredients evenly, and adding wetting dispersant, organosilicon surfactant, thickener, stabilizer, defoaming agent, antifreezing agent, thixotropic agent, pH conditioning agent and other auxiliary components and deionized water in a ball mill to obtain the suspension concentrate. The pesticide preparation of the invention has low surface tension, good wettability on the surface of targets, strong permeability and good drug effect and can evidently improve the utilization ratio of pesticides.
Description
Technical field:
The present invention relates to pesticide field, more specifically relate to the using method of a kind of novel agrochemical auxiliary agent in agricultural chemicals suspension agent and the preparation method of this suspension formulation.
Background technology:
Using the pesticide control disease pest and weed is to guarantee the indispensable means of agricultural product good quality and high output.The modern formulations of pesticide are to water baseization, ultramicronising, no dust and sustained release development, and wherein water baseization is exactly one of main direction of agricultural chemicals development.Water can reduce the consumption of organic solvent as the agricultural chemicals suspension agent of carrier, the dust pollution that does not have wettable powder and pulvis to bring again, and reduced the pesticide producing cost, become a kind of very important formulation in the pesticidal preparations.Agricultural chemicals will be brought into play high service efficiency, at first will have more pesticide solution to sprawl on target substance and be detained.This just requires soup to have lower surface tension, has good wetability and permeability on the target surface.Otherwise will cause fluid loss, will inevitably influence drug effect like this, directly environment caused serious pollution.Simultaneously, because drug effect is not high, the peasant will inevitably strengthen dispenser dynamics and intensity, has both caused the increase of agricultural chemicals use cost, has also caused the severe overweight of residue of pesticide.Therefore, improving the agricultural chemicals availability is to reduce drug cost, reduces environmental pollution, reduces the basic of residue of pesticide.
Compare with conventional surfactant, organic silicon surfactant has the infiltration capacity that good wetability, stronger adhesion, superpower extended capability are become reconciled.Owing to have lower surface tension, its pore permeability height has good anti-rain erosion.As a kind of novel, insecticides adjuvant efficiently, it has broad application prospects in pesticide industry.
Therefore, in the present invention novel surfactant-organic silicon surfactant is joined in the agricultural-chemical suspension preparation, made a kind of physical stability, chemical stability, all good agricultural chemicals suspension agents of preparation effect.
Technology contents:
The objective of the invention is to propose a kind of agricultural chemicals suspension agent that contains organic silicon surfactant and preparation method thereof.
Agricultural chemicals suspension agent of the present invention is made up of pesticidal active substance, organic silicon surfactant, auxiliary element and water.
Pesticidal active substance wherein is for being selected from insecticide fluorine worm nitrile, chlopyrifos, Avermectin, Affirm (Merck Co.), emamectin-benzoate, worm hydrazides, Imidacloprid, butyl ether urea; Bactericide is selected from propiconazole, Difenoconazole, jinggangmeisu, thiophanate-methyl, carbendazim, tmtd, phonetic mould amine, bacillus thuringiensis,Bt; Herbicide nicosulfuron, Quizalotop-ethyl, efficient haloxyfop-methyl spirit, atrazine; Miticide four mite piperazines, azacyclotin; In the gibberellin of plant growth regulator one or more.
Organic silicon surfactant wherein can be to well known to a person skilled in the art those.Preferably has T type structure, by all being the skeleton that siloxanes forms that methylates, with the trisiloxanes of one or more polyethers tail.More preferably Silwet408, the Silwet625, Silwet618 and the Silwet806 that produce of GE company, the Boost that Doro Elaneo company produces, or the Sylgard309 that produces of DocoCorning company etc.Concrete general structure is
Agricultural chemicals suspension agent of the present invention also contains auxiliary element.Described auxiliary element is wetting dispersing agent, defoamer, antifreezing agent, thickener, pH regulator agent and stabilizing agent.Wherein wetting dispersing agent can be to be selected from sodium lignin sulfonate, calcium lignosulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, the alkyl naphthalene formaldehyde condensate sulfonates, neopelex, lauryl sodium sulfate, enuatrol, potassium oleate, alkyl polyoxyethylene ether sulfonate, the alkylphenol polyoxyethylene formaldehyde condensation products, alkylphenol polyoxyethylene, polyoxyethylene nonylphenol ether, the polyoxyethylene poly-oxygen propylene aether block copolymer, draw back powder, the dodecyl polyoxyethylene ether phosphate, in the alkyl naphthalene formaldehyde condensate sulfonates one or more.
Thickener can be selected from xanthans, heteroglycan, CMC, hydroxyethylcellulose, methylcellulose, gum Arabic, sodium alginate, polyvinyl alcohol, the aluminium-magnesium silicate any or several.
Stabilizing agent can be to be selected from chloropropylene oxide, pyrogallol, butyl glycidyl ether, potassium sorbate, Sodium Benzoate, epoxidised soybean oil, linseed oil, BHA, BHT, citric acid, PABA, castor oil, olive oil, hydroquinones, bisnaphthol, salicylic acid, the soluble starch one or more.
Defoamer can be to be selected from silicone oil, silicone, C10-20 saturated fat acids, the C8-10 aliphatic alcohols one or more.
Antifreezing agent is to be selected from ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, the urea element one or more.
The pH regulator agent is to be selected from sodium hydroxide, ammoniacal liquor, acetic acid, hydrochloric acid, citric acid and the phosphoric acid one or more.
The agricultural chemicals suspension agent that contains organic silicon surfactant of the present invention consists of pesticide activity component 0.5%～80% by weight, and organic silicon surfactant is 0.5%～25%, and all the other are auxiliary element and water.
Further, the composition of agricultural chemicals suspension agent of the present invention is by weight:
Pesticide activity component 0.5%～80% wetting dispersing agent 0.5%～30%
Organic silicon surfactant 0.5%～25% defoamer 1.0%～10%
Antifreezing agent 0.2%～5.0% thickener 0.3%～10%
PH regulator agent 0.1%～5.0% stabilizing agent 0.01%～20%
Water 15%～80%.
Agricultural chemicals suspension agent of the present invention can prepare by the following method:
Pesticide activity component and wetting dispersing agent are fully mixed, perhaps earlier several pesticide activity components are mixed in proportion, fully mix with wetting dispersing agent again.Add organic silicon surfactant, defoamer, thickener, stabilizing agent, antifreezing agent, thixotropic agent, pH regulator agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Agricultural chemicals suspension agent of the present invention is owing to be scattered in the particle of pesticide activity component with miniaturization in the water, and added organic silicon surfactant therein, thereby has the following advantages: (1) flash-point height, do not burn, and do not explode, produce and store and safe in utilization; (2) dust is few, and environmental pollution is little, to the producer and user and Environmental security; (3) with water be matrix, aboundresources, product cost is low, easily packing; (4) have low surface tension after the said preparation spraying, good in the target surface wettability, sprawl with infiltration capacity by force, be distributed in the target surface with fine particle, help improving drug effect; (5) the organosilicon auxiliary agent can significantly reduce solution surface tension, reduces the contact angle between soup and the target, therefore can promote that soup penetrates into epidermis through pore, and soup absorbs fast, thereby can fall the opposing rainwash.
The invention provides a kind of efficient, low toxicity, biological effective rate of utilization height, the agricultural chemicals suspension agent comparatively friendly to environment.Said preparation is with water to replace organic solvent, and novel surfactant-organic silicon surfactant is incorporated in the processing of agricultural chemicals suspension agent, physics peptizaiton by dispersant and ball mill, pesticide activity component to be dispersed in below the 5um in the water, is formed a kind of physical stability, chemical stability, all good agricultural chemicals suspension agents of preparation effect.Preparation technology of the present invention is simple, and production cost is low.
Embodiment:
Essence for a better understanding of the present invention describes technology contents of the present invention in detail with example below, but content of the present invention is not limited thereto.
One: 20% Avermectin Tebufenozide suspending agent of embodiment
Each constituent content is Avermectin 1%, worm hydrazides 19% by weight, dispersant SFR 4%, wetting agent NNO 3%, add water to 100% at organic silicon surfactant 5%, silicone defoaming agent 1%, antifreeze glycol 3.0%, thickener xanthans 1%, PH conditioning agent 1.0%, stabilizing agent Sodium Benzoate 1%, aluminium-magnesium silicate 3.0%.
Preparation process is: earlier Avermectin, worm hydrazides and wetting dispersing agent are fully mixed, add organic silicon surfactant, defoamer, thickener, stabilizing agent, antifreezing agent, thixotropic agent, PH conditioning agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Two: 28% carbendazim jinggangmeisus of embodiment suspending agent
Each constituent content is carbendazim 24%, jinggangmeisu 4% by weight, wetting dispersing agent MF7%, organic silicon surfactant 8%, silicone defoaming agent 1%, antifreezing agent glycerine 3.0%, thickener xanthans 1%, add water to 100% at suspending agent aluminium-magnesium silicate 2%, PH conditioning agent 1.0%, stabilizing agent potassium sorbate 0.5%.
Preparation process is: earlier carbendazim active compound, jinggangmeisu stoste and wetting dispersing agent are fully mixed, add organic silicon surfactant, defoamer, thickener, stabilizing agent, antifreezing agent, PH conditioning agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Three: 20% clofentezine suspension agents of embodiment
Each constituent content is four mite piperazines 20%, wetting agent Morwet EFW 2% by weight, dispersant Morwet D-4254%, organic silicon surfactant 2%, silicone defoaming agent 1%, antifreeze glycol 2.0%, thickener CMC 0.5%, PH conditioning agent 1.0%, stabilizing agent potassium sorbate 0.5% add water to 100%.
Preparation process is: earlier the former medicine of 95% 4 mite piperazine and wetting agent, dispersant are fully mixed, add organic silicon surfactant, silicone defoaming agent, thickener, stabilizing agent, antifreezing agent, PH conditioning agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Four: 5% fluorine worms of embodiment nitrile suspending agent
Each constituent content is fluorine worm nitrile 20%, wetting agent Morwet EFW 2% by weight, dispersant Morwet D-4254%, organic silicon surfactant 8%, silicone defoaming agent 1%, antifreezing agent glycerine 3.0%, thickener CMC 0.5%, PH conditioning agent 1.0%, stabilizing agent Sodium Benzoate 0.5% add water to 100%.
Preparation process is: earlier fluorine worm nitrile and wetting dispersing agent are fully mixed, add organic silicon surfactant, silicone defoaming agent, thickener, stabilizing agent, antifreezing agent, PH conditioning agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Five: 20% Tebufenozide suspending agents of embodiment
Each constituent content is worm hydrazides 20%, wetting agent Morwet EFW 3% by weight, dispersant Morwet D-4253%, organic silicon surfactant 6%, silicone defoaming agent 1%, antifreeze glycol 5.0%, thickener xanthan gum 0.5%, PH conditioning agent 1.0%, stabilizing agent Sodium Benzoate 0.5% add water to 100%.
Preparation process is: earlier worm hydrazides and wetting dispersing agent are fully mixed, add organic silicon surfactant, silicone defoaming agent, thickener, stabilizing agent, antifreezing agent, PH conditioning agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Six: 30% phonetic mould amine suspending agents of embodiment
Each constituent content is phonetic mould amine 30%, wetting agent Morwet EFW 3% by weight, dispersant Morwet D-4255%, organic silicon surfactant 8%, silicone defoaming agent 1%, antifreeze glycol 5.0%, thickener xanthan gum 0.5%, stabilizing agent Sodium Benzoate 0.5% add water to 100%.
Preparation process is: earlier phonetic mould amine and wetting dispersing agent are fully mixed, add organic silicon surfactant, silicone defoaming agent, thickener, stabilizing agent, antifreezing agent and deionized water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
Embodiment seven: the evaluation of preparation physicochemical property effect
To adding the preparation of organic silicon surfactant described in the present invention, the assay method of every evaluation index is as follows:
1, surface tension (Υ)
The mensuration of medical liquid surface tension adopts platinum plate method.When the surface tension of soup was lower than the surface free energy of target, soup just might and be sprawled at the target moistened surface.
2, dynamic contact angle (θ)
Dynamic contact angle adopts contact angle measurement to measure, and adopts video method.The soup that dynamic contact angle is little is strong to wettability on the selected target.
3, drop expanding area (S)
The mensuration of drop expanding area adopts integration method.The drop expanding area has directly been represented the extended capability of soup on the target surface, and the drop expanding area is big, shows that the preparation spreadability is good.
Table 1 preparation effect of the present invention evaluation (dilution 2000 *)
| The mensuration project | ??CK | Example of formulations 1 |
| Surface tension (mN/m) | ??34.31 | ?22.1 |
| Contact angle during 30s (°) | ??60.2 | ?35.7 |
| Expansion radius (mm) during 30s | ??2.38 | ?3.90 |
The effect evaluation of table 2 preparation of the present invention (dilution 1000 *)
| The mensuration project | ??CK | Example of formulations 2 |
| Surface tension (mN/m) | ??38.2 | ?22.9 |
| Contact angle during 30s (°) | ??66.2 | ?40.9 |
| Expansion radius (mm) during 30s | ??2.04 | ?3.58 |
The effect evaluation of table 3 preparation of the present invention (dilution 1000 *)
| The mensuration project | ??CK | Example of formulations 3 |
| Surface tension (mN/m) | ??36.7 | ?22.7 |
| Contact angle during 30s (°) | ??64.3 | ?41.9 |
| Expansion radius (mm) during 30s | ??2.46 | ?3.73 |
The effect evaluation of table 4 preparation of the present invention (dilution 2000 *)
| The mensuration project | ??CK | Example of formulations 4 |
| Surface tension (mN/m) | ??38.6 | ?22.4 |
| Contact angle during 30s (°) | ??62.1 | ?39.5 |
| Expansion radius (mm) during 30s | ??2.41 | ?3.29 |
The effect evaluation of table 5 preparation of the present invention (dilution 1000 *)
| The mensuration project | ??CK | Example of formulations 5 |
| Surface tension (mN/m) | ??37.0 | ?22.3 |
| Contact angle during 30s (°) | ??69.8 | ?38.4 |
| Expansion radius (mm) during 30s | ??2.08 | ?3.19 |
Annotate: in the above experiment, CK all adopts the water of equivalent to substitute organic silicon surfactant, and all the other prescriptions are with of the present invention same.
From above measurement result as can be seen, surface tension, the contact angles and wetting time that preparation can reduce soup is effectively shone in the preparation comparison that is added with organic silicon surface active agent, increases the expanding area of drop.
Embodiment eight: preparation field efficacy control efficiency is estimated
For the agricultural-chemical suspension preparation of further checking employing the present invention production and the advance of the conventional agricultural chemicals suspension agent of producing, carried out field control effectiveness test respectively, employing method and result are as described below.Below in the experiment, CK adopts the water of equivalent to substitute organic silicon surfactant, all the other prescriptions with of the present invention together.
1,20% Avermectin Tebufenozide suspending agent field control effectiveness test
Trial crops is a wild cabbage, and controlling object is a diamond-back moth 1-2 instar larvae, with 2000 times of preparation dilutions, by mu with amount of formulation 50 gram even spraying, dispenser once, each handles triplicate, 2 days and 7 days investigation prevention effects the results are shown in following table behind the medicine.
Table 6 20% Avermectin Tebufenozide suspending agent control diamond-back moth effect relatively
2,20% clofentezine suspension agent field control effectiveness test
Trial crops is a mandarin tree, and controlling object is a two spotted spider mite, with 3000 times of preparation dilutions, even spraying, dispenser once, each handles triplicate, 2 days, 15 days investigation prevention effects the results are shown in following table behind the medicine.
Table 7 20% clofentezine suspension agent control citrus red mite effect relatively
3,20% Tebufenozide suspending agent field control effectiveness test
Trial crops is a wild cabbage, and controlling object is a beet armyworm 1-2 instar larvae, with 1000 times of preparation dilutions, by mu with amount of formulation 100 gram even spraying, dispenser once, each handles triplicate, 2 days and 7 days investigation prevention effects the results are shown in following table behind the medicine.
Table 8 20% Tebufenozide suspending agent control beet armyworm effect relatively
4,30% phonetic mould amine suspending agent field control effectiveness test
Trial crops is a tomato, and controlling object is a gray mold, with 1000 times of preparation dilutions, with amount of formulation 100 gram even spraying, in the dispenser of gray mold their early stage once, executes medicine for the second time after 10 days, altogether the dispenser secondary by mu.Each handles triplicate, and for the first time 10 days and 10 days preventive effects behind the medicine for the second time behind the medicine of investigation the results are shown in following table respectively.
Table 9 30% phonetic mould amine suspending agent is prevented and treated the gray mold effect relatively
Claims (13)
1, a kind of agricultural chemicals suspension agent is characterized in that by weight by pesticide activity component 0.5%～80%, organic silicon surfactant is 0.5%～25%, and auxiliary element and water are formed.
2, agricultural chemicals suspension agent according to claim 1 is characterized in that auxiliary element is wetting dispersing agent, defoamer, antifreezing agent, thickener, pH regulator agent, stabilizing agent and thixotropic agent.
3, agricultural chemicals suspension agent according to claim 2 is characterized in that by weight:
Pesticide activity component 0.5%～80% wetting dispersing agent 0.5%～30%
Organic silicon surfactant 0.5%～25% defoamer 1.0%～10%
Antifreezing agent 0.2%～5.0% thickener 0.3%～10%
PH regulator agent 0.1%～5.0% stabilizing agent 0.01%～20%
Water 15%～80%.
4, agricultural chemicals suspension agent according to claim 1 is characterized in that described pesticidal active substance is selected from insecticide fluorine worm nitrile, chlopyrifos, Avermectin, Affirm (Merck Co.), emamectin-benzoate, worm hydrazides, Imidacloprid, butyl ether urea; Bactericide is selected from propiconazole, Difenoconazole, jinggangmeisu, thiophanate-methyl, carbendazim, tmtd, phonetic mould amine, bacillus thuringiensis,Bt; Herbicide nicosulfuron, Quizalotop-ethyl, efficient haloxyfop-methyl spirit, atrazine; Miticide four mite piperazines, azacyclotin; In the gibberellin of plant growth regulator one or more.
5, agricultural chemicals suspension agent according to claim 1 is characterized in that described organic silicon surfactant for having T type structure, by all being the skeleton that siloxanes forms that methylates, with the trisiloxanes of one or more polyethers tail.
6, agricultural chemicals suspension agent according to claim 5, organic silicon surfactant wherein can be to well known to a person skilled in the art those, it is characterized in that preferred organic silicon surfactant is Silwet408, Silwet625, Silwet618, Silwet806, Boost, or Sylgard309.
7, agricultural chemicals suspension agent according to claim 2 is characterized in that wetting dispersing agent is for being selected from sodium lignin sulfonate, calcium lignosulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, the alkyl naphthalene formaldehyde condensate sulfonates, neopelex, lauryl sodium sulfate, enuatrol, potassium oleate, alkyl polyoxyethylene ether sulfonate, the alkylphenol polyoxyethylene formaldehyde condensation products, alkylphenol polyoxyethylene, polyoxyethylene nonylphenol ether, the polyoxyethylene poly-oxygen propylene aether block copolymer, draw back powder, the dodecyl polyoxyethylene ether phosphate, in the alkyl naphthalene formaldehyde condensate sulfonates one or more.
8, agricultural chemicals suspension agent according to claim 2, it is characterized in that thickener be selected from xanthans, heteroglycan, CMC, hydroxyethylcellulose, methylcellulose, gum Arabic, sodium alginate, polyvinyl alcohol, the aluminium-magnesium silicate any or several.
9, agricultural chemicals suspension agent according to claim 2 is characterized in that stabilizing agent is to be selected from chloropropylene oxide, pyrogallol, butyl glycidyl ether, potassium sorbate, Sodium Benzoate, epoxidised soybean oil, linseed oil, BHA, BHT, citric acid, PABA, castor oil, olive oil, hydroquinones, bisnaphthol, salicylic acid, the soluble starch one or more.
10, agricultural chemicals suspension agent according to claim 2 is characterized in that defoamer is to be selected from silicone oil, silicone, C10-20 saturated fat acids, the C8-10 aliphatic alcohols one or more.
11, agricultural chemicals suspension agent according to claim 2 is characterized in that antifreezing agent is to be selected from ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, the urea one or more.
12, agricultural chemicals suspension agent according to claim 2 is characterized in that the pH regulator agent is to be selected from sodium hydroxide, ammoniacal liquor, acetic acid, hydrochloric acid, citric acid and the phosphoric acid one or more.
13, the preparation method of the described agricultural chemicals suspension agent of claim 1-10, it is characterized in that: earlier pesticide activity component and wetting dispersing agent are fully mixed, add organic silicon surfactant, defoamer, thickener, stabilizing agent, antifreezing agent, pH regulator agent and water then successively, stir while adding evenly, in ball mill ball milling 2.5-4 hour, obtain the suspending agent of particle diameter below 5um.
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