CN106804595A - A kind of Fluoxastrobin aqueous suspension agent and preparation method thereof - Google Patents
A kind of Fluoxastrobin aqueous suspension agent and preparation method thereof Download PDFInfo
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- CN106804595A CN106804595A CN201510841233.9A CN201510841233A CN106804595A CN 106804595 A CN106804595 A CN 106804595A CN 201510841233 A CN201510841233 A CN 201510841233A CN 106804595 A CN106804595 A CN 106804595A
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- fluoxastrobin
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Abstract
The invention discloses a kind of Fluoxastrobin aqueous suspension agent.Aqueous suspension agent is by following mass ratio material composition：The following weight percent composition of technical scheme of Fluoxastrobin aqueous suspension agent：Fluoxastrobin 15~40%, wetting dispersing agent 1~6%, thickener 0.5~5%, defoamer 0.1~0.5%, antifreezing agent 3~10%, preservative 0.1~0.5%, pH adjusting agent 0.1~0.3%, water surplus, it is 100% to supply gross mass percentage.The invention also discloses the preparation technology of above-mentioned Fluoxastrobin aqueous suspension agent.It is an advantage of the current invention that using new processing method and novel adjuvant system, the resistance to hard water and dispersion stabilization of aqueous suspension agent can be significantly improved, the problems such as solving easy bleed, tie bottom and Ostwald ripening.
Description
Technical field
The present invention relates to a kind of New-type wide-spectrum biocide preparation, and in particular to a kind of Fluoxastrobin aqueous suspension agent and preparation method thereof.
Background technology
Fluoxastrobin（Azoxystrobin）It is a kind of bright olefin(e) acid lipid bactericide of brand-new β methoxyl groups, is breathed by suppressing sick fungal mitochondria, destroy the energy synthesis of germ, with protects, treats and root out triple function.Can be used for cauline leaf spraying, Seed Treatment, can also carry out scholar's earth treatment.It is to nearly all Mycophytes（Ascomycetes, Basidiomycetes, Oomycete and Fungi Imperfecti）Disease, such as powdery mildew, rust, the withered lame, net blotch of grain husk, downy mildew, rice blast have good activity, and have bactericide no interactions resistance with current.For cereal, paddy rice, grape, potato, vegetables, fruit tree and other crops, to these crop safeties.
The azoxystrobin formulations of domestic market sale mainly include missible oil, wettable powder, wettable granular, aqueous suspension agent.Because missible oil will use substantial amounts of organic solvent, substantial amounts of organic solvent causes pollution to environment, and with the continuous enhancing of people's environmental consciousness and security knowledge, the formulations of pesticide develop towards water baseization, particularly aqueous suspension agent（Suspension Concentrate, SC）Formulation increasingly by people favour and attention.Aqueous suspension agent is to be disperseed to be homogenized and the higher suspension shape system that is formed in aqueous medium by a kind of water insoluble solid-state active compound and various auxiliary agents, it is to avoid the environmental pollution of missible oil and wettable powder caused by organic solvent and dust, and easy to use；But the problems such as poor resistance to hard water, bleed knot bottom, poor dispersion stabilization, Ostwald ripening easily occurs in process in Fluoxastrobin aqueous suspension agent, seriously hinders it to develop and use.
The advantage of the invention is that：Using new processing method and novel adjuvant system, the problems such as can significantly solve poor resistance to hard water, easy bleed knot bottom, poor dispersion stabilization, Ostwald ripening.
The invention solves the problems that a technical problem be select a suitable aqueous suspension agent adjuvant system, solve the problems, such as that its resistance to hard water is poor.Another technical problem is the optimization of aqueous suspension agent processing technology, solves the problems, such as easy bleed knot bottom, dispersion stabilization difference and Ostwald ripening.Present invention optimizes suspending agent processing technology, a kind of combed metal carboxylate polymeric dispersant is screened, hydrophobic main chain is adsorbed on Fluoxastrobin surface, there is provided electrostatic repulsion and space resistance, reduced the surface energy of Fluoxastrobin particle, prevented from reuniting between particle；Carboxylated hydrophilic group pendant has good compatibility with water polar solvent, can be with stable for extended periods of time, so as to prepare the Fluoxastrobin aqueous suspension agent of stabilization.Fluoxastrobin aqueous suspension agent modest viscosity of the present invention, normal temperature topples over residue<0.8%, below 5 μm, cloud disperses particle diameter in water, suspensibility more than 97% in standard hard water, suspensibility more than 90% in three times hard water；Heat storage stability is high, and viscosity B coefficent less, topples over residue before and after heat storage<1.0%, suspensibility is high, and particle diameter is below 5 μm.
Innovative point of the invention is：
Fluoxastrobin aqueous suspension agent is processed with combed metal carboxylate polymer wetting dispersing agent, Fluoxastrobin aqueous suspension agent suspensibility, heat storage stability, resistance to hard water and dispersion stabilization is improved, bleed knot bottom and Ostwald ripening phenomenon is prevented.
The content of the invention
Present invention aim to address the problem of Fluoxastrobin aqueous suspension agent resistance to hard water difference, and provide a kind of preparation method of the Fluoxastrobin aqueous suspension agent of stabilization；
To achieve the above object, the following weight percent composition of the technical scheme of Fluoxastrobin aqueous suspension agent：Fluoxastrobin 15~40%, wetting dispersing agent 1~6%, thickener 0.5~5%, defoamer 0.1~0.5%, antifreezing agent 3~10%, preservative 0.1~0.5%, pH adjusting agent 0.1~0.3%, water surplus, it is 100% to supply gross mass percentage.
（1）Above-mentioned Fluoxastrobin aqueous suspension agent, wherein the dispersant be selected from a kind of carboxylate and its thickener described in derivative ternary polymerization dispersant patent ZL2011104408548 is selected from sodium carboxymethylcellulose, aluminium-magnesium silicate, hydroxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, xanthans one or more；
Described defoamer is selected from organosilicon compound, Cl0-20Saturated fat acids compound, C8-10Aliphatic alcohols compound
Described antifreezing agent is selected from one or more in ethylene glycol, glycerine, propane diols, polyethylene glycol, sorbierite or urea；
Described preservative is selected from one or more in formaldehyde, potassium sorbate, Sodium Benzoate, formaldehyde, isothiazolinone；
Described pH adjusting agent be selected from triethylamine, NaOH, ammoniacal liquor, acetic acid, citric acid or phosphoric acid in one or more, the consumption of pH adjusting agent be make aqueous suspension agent pH value be 6~8.
Present invention also offers the preparation method of above-mentioned Fluoxastrobin aqueous suspension agent, the method is comprised the following steps：
Step one：Fluoxastrobin active compound is carried out into precomminution, with wetting dispersing agent, antifreezing agent, preservative, defoamer, deionized water mixing and stirring according to a certain percentage, serialization sand milling is carried out by horizontal sand mill, temperature control is sanded below 40 DEG C, particle diameter stops being sanded after reaching requirement；
Step 2：Thickener and pH adjusting agent are added, is continued sand milling and is obtained Fluoxastrobin aqueous suspension agent for a period of time；
The preparation method of above-mentioned Fluoxastrobin aqueous suspension agent, wherein, the average grain diameter described in step one reaches 0.5 μm~5 μm.
Specific embodiment
Embodiment 1
15% Fluoxastrobin aqueous suspension agent
Each component content（By weight）For Fluoxastrobin active compound 15%, carboxylate and its derivative terpolymer dispersants 3%（Shanghai Shi great macromolecular materials Co., Ltd）；Thickener xanthans (2% aqueous solution) 5%, aluminium-magnesium silicate 0.5%, defoamer organosilicon 0.5%, Sodium Benzoate 0.2% and ethylene glycol 4%（Aladdin reagent Shanghai Co., Ltd）, pH adjusting agent make in right amount aqueous suspension agent pH value be 6~8.Plus deionized water is to l00%.
The first step, after adding carboxylate and its derivative terpolymer dispersants dispersant, ethylene glycol, Sodium Benzoate, aluminium-magnesium silicate, organic silicon defoamer mixing and stirring in deionized water, add Fluoxastrobin active compound, serialization sand milling is carried out by horizontal sand mill, temperature control is sanded below 40 DEG C, particle diameter stops being sanded after reaching requirement；
Step 2, adds xanthans（2% aqueous solution）5%, add appropriate triethylamine to make the pH of aqueous suspension agent be 6~8, continue sand milling 10min and obtain Fluoxastrobin aqueous suspension agent.
The key technical indexes is as follows：
Effective content, 15%：Outward appearance, faint yellow uniform liquid；Average grain diameter：3.55μm；Normal temperature dispersion stabilization：It is qualified；Cold storage dispersion stabilization：It is qualified；Heat storage dispersion stabilization：It is qualified；Dispersiveness：Disperse into cloud in water；Suspensibility, 98.23%.
Embodiment 2
20% Fluoxastrobin aqueous suspension agent
Each component content（By weight）For Fluoxastrobin active compound 20%, carboxylate and its derivative terpolymer dispersants 3.5%（Shanghai Shi great macromolecular materials Co., Ltd）；Thickener xanthans (2% aqueous solution) 5%, aluminium-magnesium silicate 0.3%, defoamer organosilicon 0.5%, Sodium Benzoate 0.2% and ethylene glycol 4%, pH adjusting agent make aqueous suspension agent pH value be 6~8 in right amount.Plus deionized water is to l00%.Specific preparation is carried out by embodiment 1.
Effective content, 20%：Outward appearance, faint yellow uniform liquid；Average grain diameter：4.10μm；Normal temperature dispersion stabilization：It is qualified；Cold storage dispersion stabilization：It is qualified；Heat storage dispersion stabilization：It is qualified；Dispersiveness：Disperse into cloud in water；Suspensibility, 97.88%.
Embodiment 3
25% Fluoxastrobin aqueous suspension agent
Each component content（By weight）For Fluoxastrobin active compound 25%, carboxylate and its derivative terpolymer dispersants 4%（Shanghai Shi great macromolecular materials Co., Ltd）；Thickener xanthans (2% aqueous solution) 3%, aluminium-magnesium silicate 0.2%, defoamer organosilicon 0.8%, Sodium Benzoate 0.2% and ethylene glycol 4%, pH adjusting agent make aqueous suspension agent pH value be 6~8 in right amount.Plus deionized water is to l00%.Specific preparation is carried out by embodiment 1.
Effective content, 25%：Outward appearance, faint yellow uniform liquid；Average grain diameter：4.34μm；Normal temperature dispersion stabilization：It is qualified；Cold storage dispersion stabilization：It is qualified；Heat storage dispersion stabilization is qualified；Dispersiveness：Disperse into cloud in water；Suspensibility, 98.23%.
Claims (8)
1. a kind of Fluoxastrobin aqueous suspension agent and preparation method thereof, it is characterised in that：The aqueous suspension agent weight percent composition：
Fluoxastrobin
15~40%
Wetting dispersing agent
1~6%
Thickener
0.5~5%
Defoamer
0.1~0.5%
Antifreezing agent
3~10%
Preservative
0.1~0.5%
PH adjusting agent
0.1~0.3%
Water
Complement to 100 parts.
2. the wetting dispersing agent of Fluoxastrobin aqueous suspension agent is selected from a kind of carboxylate and its derivative ternary polymerization dispersant according to claim 1, and this dispersant comes from patent ZL2011104408548.
3. thickener according to claim 1 is selected from one or more in sodium carboxymethylcellulose, aluminium-magnesium silicate, hydroxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, xanthans.
4. defoamer according to claim 1 is selected from organosilicon compound, Cl0-20Saturated fat acids compound, C8-10Aliphatic alcohols compound.
5. antifreezing agent according to claim 1 is selected from one or more in ethylene glycol, glycerine, propane diols, polyethylene glycol, sorbierite or urea.
6. according to claim 1 preservative be selected from formaldehyde, potassium sorbate, Sodium Benzoate, formaldehyde, isothiazolinone in one or more.
7. pH adjusting agent according to claim 1 be selected from triethylamine, NaOH, ammoniacal liquor, acetic acid, citric acid or phosphoric acid in one or more, the consumption of pH adjusting agent be make aqueous suspension agent pH value be 6~8.
8. the preparation method of Fluoxastrobin aqueous suspension agent is comprised the following steps according to claim 1：
Step one：Fluoxastrobin active compound is carried out into precomminution, with wetting dispersing agent, antifreezing agent, preservative, defoamer, deionized water mixing and stirring according to a certain percentage, serialization sand milling is carried out by horizontal sand mill, temperature control is sanded below 40 DEG C, particle diameter stops being sanded after reaching requirement；
Step 2：Thickener and pH adjusting agent are added, is continued sand milling and is obtained Fluoxastrobin aqueous suspension agent for a period of time.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029684A (en) * | 2017-11-29 | 2018-05-15 | 广东中迅农科股份有限公司 | A kind of suspending agent for suppressing your moral ripening phenomenon of Oswald |
| CN108513975A (en) * | 2018-05-23 | 2018-09-11 | 河北威远生物化工有限公司 | A kind of Fluoxastrobin suspending agent and preparation method thereof for flying to prevent |
| CN109430277A (en) * | 2019-01-02 | 2019-03-08 | 山东华阳农药化工集团有限公司 | A kind of 250g/L Fluoxastrobin suspending agent and preparation method thereof |
| CN112602726A (en) * | 2020-12-22 | 2021-04-06 | 江西禾益化工股份有限公司 | Processing method of inorganic copper preparation |
| CN113383782A (en) * | 2021-06-30 | 2021-09-14 | 安徽广信农化股份有限公司 | Azoxystrobin pest and disease prevention agent and production process thereof |
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| CN102057912A (en) * | 2010-12-19 | 2011-05-18 | 惠州市银农科技有限公司 | Water suspending agent mixed by difenoconazole and azoxystrobin and preparation method thereof |
| CN102626084A (en) * | 2012-03-23 | 2012-08-08 | 河南农业大学 | Azoxystrobin nano-water suspending agent and its preparation method |
| CN102726403A (en) * | 2012-06-09 | 2012-10-17 | 广东中迅农科股份有限公司 | Azoxystrobin suspension concentrate and preparation method thereof |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102057912A (en) * | 2010-12-19 | 2011-05-18 | 惠州市银农科技有限公司 | Water suspending agent mixed by difenoconazole and azoxystrobin and preparation method thereof |
| CN102626084A (en) * | 2012-03-23 | 2012-08-08 | 河南农业大学 | Azoxystrobin nano-water suspending agent and its preparation method |
| CN102726403A (en) * | 2012-06-09 | 2012-10-17 | 广东中迅农科股份有限公司 | Azoxystrobin suspension concentrate and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029684A (en) * | 2017-11-29 | 2018-05-15 | 广东中迅农科股份有限公司 | A kind of suspending agent for suppressing your moral ripening phenomenon of Oswald |
| CN108513975A (en) * | 2018-05-23 | 2018-09-11 | 河北威远生物化工有限公司 | A kind of Fluoxastrobin suspending agent and preparation method thereof for flying to prevent |
| CN109430277A (en) * | 2019-01-02 | 2019-03-08 | 山东华阳农药化工集团有限公司 | A kind of 250g/L Fluoxastrobin suspending agent and preparation method thereof |
| CN112602726A (en) * | 2020-12-22 | 2021-04-06 | 江西禾益化工股份有限公司 | Processing method of inorganic copper preparation |
| CN113383782A (en) * | 2021-06-30 | 2021-09-14 | 安徽广信农化股份有限公司 | Azoxystrobin pest and disease prevention agent and production process thereof |
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