CN105028399A - Suspending agent containing low-melting-point pesticide and preparation method of suspending agent - Google Patents
Suspending agent containing low-melting-point pesticide and preparation method of suspending agent Download PDFInfo
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- CN105028399A CN105028399A CN201510413267.8A CN201510413267A CN105028399A CN 105028399 A CN105028399 A CN 105028399A CN 201510413267 A CN201510413267 A CN 201510413267A CN 105028399 A CN105028399 A CN 105028399A
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Abstract
The invention provides a suspending agent containing a low-melting-point pesticide and a preparation method of the suspending agent. The suspending agent comprises components, by weight: 10-50% of effective ingredients of the low-melting-point pesticide, 2-6% of a dispersant, 2-4% of a wetting agent, 0.5-4% of white carbon black, 0.1-1% of magnesium alumina silicate, 1-3% of a stabilizing agent, and 1-5% of an antifreezing agent, with the balance being deionized water. The preparation method comprises: adding the low-melting-point pesticide, the dispersant, the wetting agent, and the stabilizing agent into a reaction kettle; performing heating to enable the low-melting-point pesticide to be melt; uniformly stirring the mixture to obtain an oil phase; uniformly mixing the oil phase and the water phase; and performing slow cooling under a situation of high-speed shearing to obtain the stable suspending agent containing the low-melting-point pesticide. Compared to the prior art, an environment-friendly preparation of the suspending agent containing the low-melting-point pesticide is provided; and the problem that an existing low-melting-point pesticide can be only processed into a missible oil, a micron emulsion, and an emulsion in water is overcome. No organic solvent or cosolvent is used, so that discharge of the organic solvent or cosolvent is avoided. The pollution is reduced, and resources are saved.
Description
Technical field
The invention belongs to field of pesticide preparation, be specifically related to a kind of suspending agent containing low melting point agricultural chemicals and preparation method thereof.
Background technology
Preparation Forms of Modern Pesticide towards water baseization, ultramicronising, without efflorescence and Co ntrolled release aspect development, namely be the formulations of pesticide of matrix with water, wherein suspending agent is the novel pesticide formulation of a kind of organic solvent-free, environmentally-friendly water-basedization, is also a kind of excellent liquid dosage form replacing emulsifiable concentrates for agricultural chemicals.But some fusing points, at the low melting point agricultural chemicals of 40-70 DEG C, are solid-state under normal temperature, when suspending agent technique carries out sand milling routinely, because temperature in sand mill raises, pesticide having, cause livering, therefore this kind of agricultural chemicals temporarily can't be produced at present as suspending agent.
In order to reduce the harm that organic solvent brings to environment, Devoting Major Efforts To Developing is efficient, low toxicity, low-residual, and resource-conserving, environmentally friendly product become inexorable trend.
The present inventor finds through large quantity research and test, under certain heating-up temperature, low melting point agricultural chemicals can melt completely and form oil phase in specific dispersant, wetting agent, above-mentioned oil phase and water is sheared and evenly namely obtains stable suspending agent, after further study, the present invention is completed.
Summary of the invention
The object of the present invention is to provide a kind of low toxicity, environmentally friendly, person poultry safety, low melting point agricultural chemicals suspension agent of easily degraded, synergy and preparation method thereof, preparation technology is simple, cost is low, be convenient to processing and produce.
Of the present inventionly to be achieved through the following technical solutions:
A suspending agent containing low melting point agricultural chemicals, is made up of the component of following percentage by weight: low melting point pesticide active ingredient 10-50%, dispersant 2-6%, wetting agent 2-4%, white carbon 0.5-4%, Magnesiumaluminumsilicate 0.1%-1%, stabilizing agent 1-3%, antifreezing agent 1-5%, surplus is deionized water.
Described low melting point agriculture the effective elements of the medicine is the mixing of one or more in cyhalofop-butyl, Prochloraz, chlopyrifos, Biphenthrin, cyhalothrin, Difenoconazole.
Described dispersant is the mixing of one or more in sodium lignin sulfonate, calcium lignosulfonate, polycarboxylic acid salt, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, alkyl naphthalene formaldehyde condensate sulfonates, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products, polyoxyethylene polyoxypropylene base ether block copolymers, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, poly-(12-hydroxy stearic acid) polyoxyethylene ether block copolymers (ABA type).
Described wetting agent is the mixing of one or more in lauryl sodium sulfate, fatty alcohol-polyoxyethylene ether, disecoctylmaleate sodium sulfonate, organosilicon.
Described antifreezing agent is the mixing of one or more in ethylene glycol, propane diols, glycerine, urea.
Described stabilizing agent is the mixing of one or more in epoxidized soybean oil, epoxidized linseed oil, pentaerythrite, xylitol, 2,6-di-tert-butyl-4-methy phenols, butylated hydroxy anisole.
Described white carbon is precipitated silica, and its fineness is less than 10 μm.
The production technology of a kind of suspending agent containing low melting point agricultural chemicals of the present invention:
Step (1): weighed active ingredient, dispersant, wetting agent, stabilizing agent, white carbon, Magnesiumaluminumsilicate and water by preset blending ratio;
Step (2): add in reactor by load weighted active ingredient and dispersant, wetting agent, stabilizing agent, is heated to 50-70 DEG C and active ingredient is melted, and the obtained oil phase that stirs;
Step (3): load weighted antifreezing agent, white carbon, Magnesiumaluminumsilicate and water are mixed, and be heated to the temperature close with step (2), obtained aqueous phase;
Step (4): oil phase is slowly added in aqueous phase, and carry out shearing 40-60 minute with high-speed intermittent clipper, be slowly down to room temperature, obtained qualified suspending agent.
The average grain diameter of low melting point agricultural chemicals suspension agent of the present invention is 1-5 μm.
Suspending agent of a kind of low melting point of the present invention agricultural chemicals and preparation method thereof is as a kind of water base agent, solve the problem that current low melting point agricultural chemicals can only be processed into missible oil, microemulsion, aqueous emulsion, and do not use any organic solvent or cosolvent, stop the discharge to environment of organic solvent or cosolvent, thus decreasing pollution, saving resource, meets the developing direction of the waterborne preparation of current international and domestic trend and the national safety and environmental protection advocated.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, better understanding essence of the present invention, with example, technology contents of the present invention is described below, but the present invention being limited to absolutely not these examples.
Embodiment one: 30% cyhalofop-butyl suspending agent
Weigh by following percentage:
Preparation steps:
(1) cyhalofop-butyl active compound, sodium lignin sulfonate, fatty alcohol-polyoxyethylene ether, polyoxyethylene polyoxypropylene base ether block copolymers, Magnesiumaluminumsilicate, epoxidized soybean oil, white carbon, propane diols, deionized water has been weighed by proportioning; Magnesiumaluminumsilicate need shift to an earlier date the aqueous solution that 24 hours soak 2%, for subsequent use;
(2) load weighted cyhalofop-butyl active compound and sodium lignin sulfonate, fatty alcohol-polyoxyethylene ether, polyoxyethylene polyoxypropylene base ether block copolymers, epoxidized soybean oil are added reactor, be added to 55 DEG C, be stirred to cyhalofop-butyl active compound and melt completely and form oil phase;
(3) load weighted white carbon, propane diols, the Magnesiumaluminumsilicate soaked and deionized water are added high-speed intermittent to shear in still, stir, be warming up to 55 DEG C;
(4) oil phase made slowly is added high-speed intermittent to shear in still, shear 45 minutes, be slowly down to normal temperature, make it to become average grain diameter at the dispersed system of about 4 μm, be 30% cyhalofop-butyl suspending agent.
Embodiment two: 45% chlopyrifos suspending agent
Weigh by following percentage:
Preparation steps:
(1) the former medicine of chlopyrifos, disecoctylmaleate sodium sulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, Magnesiumaluminumsilicate, 2,6-di-tert-butyl-4-methy phenols, white carbon, ethylene glycol, deionized water has been weighed by proportioning; Magnesiumaluminumsilicate need shift to an earlier date the aqueous solution that 24 hours soak 2%, for subsequent use;
(2) by former for load weighted chlopyrifos medicine and disecoctylmaleate sodium sulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, 2,6-di-tert-butyl-4-methy phenol adds reactor, be heated to 50 DEG C, be stirred to the former medicine of chlopyrifos and melt completely and form oil phase;
(3) load weighted white carbon, ethylene glycol, the Magnesiumaluminumsilicate soaked and deionized water are added high-speed intermittent to shear in still, stir, be warming up to 50 DEG C;
(4) oil phase made slowly is added high-speed intermittent to shear in still, shear 60 minutes, be slowly down to normal temperature, make it to become average grain diameter at the dispersed system of about 4.5 μm, be 45% chlopyrifos suspending agent.
Embodiment three: 45% Prochloraz suspending agent
Weigh by following percentage:
Preparation steps:
(1) the former medicine of Prochloraz, fatty alcohol-polyoxyethylene ether, alkyl polyoxyethylene ether sulfonate, poly-(12-hydroxy stearic acid) polyoxyethylene ether block copolymers (ABA type), Magnesiumaluminumsilicate, epoxidized soybean oil, white carbon, propane diols, deionized water has been weighed by proportioning; Magnesiumaluminumsilicate need shift to an earlier date the aqueous solution that 24 hours soak 2%, for subsequent use;
(2) former for load weighted Prochloraz medicine and fatty alcohol-polyoxyethylene ether, alkyl polyoxyethylene ether sulfonate, poly-(12-hydroxy stearic acid) polyoxyethylene ether block copolymers (ABA type), epoxidized soybean oil are added reactor, be added to 50 DEG C, be stirred to the former medicine of Prochloraz and melt completely and form oil phase;
(3) load weighted white carbon, propane diols, the Magnesiumaluminumsilicate soaked and deionized water are added high-speed intermittent to shear in still, stir, be warming up to 50 DEG C;
(4) oil phase made slowly is added high-speed intermittent to shear in still, shear 45 minutes, be slowly down to normal temperature, make it to become average grain diameter at the dispersed system of about 5 μm, be 45% Prochloraz suspending agent.
Embodiment four: 20% Biphenthrin suspending agent
Weigh by following percentage:
Preparation steps:
(1) the former medicine of Biphenthrin, organosilicon, polyoxyethylene polyoxypropylene base ether block copolymers, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, Magnesiumaluminumsilicate, epoxidized soybean oil, white carbon, glycerine, deionized water has been weighed by proportioning; Magnesiumaluminumsilicate need shift to an earlier date the aqueous solution that 24 hours soak 2%, for subsequent use;
(2) former for load weighted Biphenthrin medicine and organosilicon, polyoxyethylene polyoxypropylene base ether block copolymers, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, epoxidized soybean oil are added reactor, be added to 55 DEG C, be stirred to the former medicine of Biphenthrin and melt completely and form oil phase;
(3) load weighted white carbon, glycerine, the Magnesiumaluminumsilicate soaked and deionized water are added high-speed intermittent to shear in still, stir, be warming up to 55 DEG C;
(4) oil phase made slowly is added high-speed intermittent to shear in still, shear 45 minutes, be slowly down to normal temperature, make it to become average grain diameter at the dispersed system of about 4.5 μm, be 20% Biphenthrin suspending agent.
Claims (9)
1. the suspending agent containing low melting point agricultural chemicals, it is characterized in that, comprise the component of following percentage by weight: low melting point pesticide active ingredient 10-50%, dispersant 2-6%, wetting agent 2-4%, white carbon 0.5-4%, Magnesiumaluminumsilicate 0.1%-1%, stabilizing agent 1-3%, antifreezing agent 1-5%, surplus is deionized water.
2. a kind of suspending agent containing low melting point agricultural chemicals according to claim 1, is characterized in that: described low melting point agriculture the effective elements of the medicine is the mixing of one or more in cyhalofop-butyl, Prochloraz, chlopyrifos, Biphenthrin, cyhalothrin, Difenoconazole.
3. a kind of suspending agent containing low melting point agricultural chemicals according to claim 1, is characterized in that: described dispersant is the mixing of one or more in sodium lignin sulfonate, calcium lignosulfonate, polycarboxylic acid salt, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, alkyl naphthalene formaldehyde condensate sulfonates, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products, polyoxyethylene polyoxypropylene base ether block copolymers, poly-isosuccinic acid acid anhydride-ethylene glycol copolymer, poly-(12-hydroxy stearic acid) polyoxyethylene ether block copolymers (ABA type).
4. a kind of suspending agent containing low melting point agricultural chemicals according to claim 1, is characterized in that: described wetting agent is the mixing of one or more in lauryl sodium sulfate, fatty alcohol-polyoxyethylene ether, disecoctylmaleate sodium sulfonate, organosilicon.
5. a kind of suspending agent containing low melting point agricultural chemicals according to claims 1, is characterized in that: described antifreezing agent is the mixing of one or more in ethylene glycol, propane diols, glycerine, urea.
6. a kind of suspending agent containing low melting point agricultural chemicals according to claims 1, it is characterized in that: described stabilizing agent is the mixing of one or more in epoxidized soybean oil, epoxidized linseed oil, pentaerythrite, xylitol, 2,6-di-tert-butyl-4-methy phenols, butylated hydroxy anisole.
7. a kind of suspending agent containing low melting point agricultural chemicals according to claims 1, it is characterized in that: described white carbon is precipitated silica, its fineness is less than 10 μm.
8. the preparation method of a kind of suspending agent containing low melting point agricultural chemicals described in a claims 1:
Step (1): weighed active ingredient, dispersant, wetting agent, stabilizing agent, white carbon, Magnesiumaluminumsilicate and water by preset blending ratio;
Step (2): add in reactor by load weighted active ingredient and dispersant, wetting agent, stabilizing agent, is heated to 50-70 DEG C and active ingredient is melted, and the obtained oil phase that stirs;
Step (3): load weighted antifreezing agent, white carbon, Magnesiumaluminumsilicate and water are mixed, and be heated to the temperature close with step (2), obtained aqueous phase;
Step (4): oil phase is slowly added in aqueous phase, and carry out shearing 40-60 minute with high-speed intermittent clipper, be slowly down to room temperature, obtained qualified suspending agent.
9. the preparation method of described a kind of suspending agent containing low melting point agricultural chemicals according to claim 8, is characterized in that: the average grain diameter of described low melting point agricultural chemicals suspension agent is 1-5 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510413267.8A CN105028399A (en) | 2015-07-14 | 2015-07-14 | Suspending agent containing low-melting-point pesticide and preparation method of suspending agent |
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| CN201510413267.8A CN105028399A (en) | 2015-07-14 | 2015-07-14 | Suspending agent containing low-melting-point pesticide and preparation method of suspending agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105432604A (en) * | 2015-11-16 | 2016-03-30 | 浙江天丰生物科学有限公司 | Low-melting-point compound suspension and preparation method thereof |
| CN108782549A (en) * | 2018-07-17 | 2018-11-13 | 郭秦 | A kind of compounding low melting point suspending agent technique |
| CN109907064A (en) * | 2019-04-10 | 2019-06-21 | 连云港市特别特生化有限公司 | A kind of Tebuconazole Prochloraz suspending agent and its preparation method and application |
| CN112314597A (en) * | 2020-11-30 | 2021-02-05 | 上虞颖泰精细化工有限公司 | Preparation method of aqueous suspending agent |
| CN112825852A (en) * | 2020-12-30 | 2021-05-25 | 江苏耘农化工有限公司 | Low-melting-point pesticide water suspending agent and preparation method thereof |
| CN115152749A (en) * | 2022-06-01 | 2022-10-11 | 佳化化学科技发展（上海）有限公司 | Aqueous suspension and preparation method thereof |
-
2015
- 2015-07-14 CN CN201510413267.8A patent/CN105028399A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105432604A (en) * | 2015-11-16 | 2016-03-30 | 浙江天丰生物科学有限公司 | Low-melting-point compound suspension and preparation method thereof |
| CN108782549A (en) * | 2018-07-17 | 2018-11-13 | 郭秦 | A kind of compounding low melting point suspending agent technique |
| CN109907064A (en) * | 2019-04-10 | 2019-06-21 | 连云港市特别特生化有限公司 | A kind of Tebuconazole Prochloraz suspending agent and its preparation method and application |
| CN112314597A (en) * | 2020-11-30 | 2021-02-05 | 上虞颖泰精细化工有限公司 | Preparation method of aqueous suspending agent |
| CN112825852A (en) * | 2020-12-30 | 2021-05-25 | 江苏耘农化工有限公司 | Low-melting-point pesticide water suspending agent and preparation method thereof |
| CN115152749A (en) * | 2022-06-01 | 2022-10-11 | 佳化化学科技发展（上海）有限公司 | Aqueous suspension and preparation method thereof |
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Application publication date: 20151111 |