CN105145554A - Wettable powder containing low-melting technical material and preparation method of wettable powder - Google Patents
Wettable powder containing low-melting technical material and preparation method of wettable powder Download PDFInfo
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- CN105145554A CN105145554A CN201510497725.0A CN201510497725A CN105145554A CN 105145554 A CN105145554 A CN 105145554A CN 201510497725 A CN201510497725 A CN 201510497725A CN 105145554 A CN105145554 A CN 105145554A
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Abstract
The invention relates to wettable powder containing a low-melting technical material and a preparation method of the wettable powder. The wettable powder comprises components in percentage by weight as follows: 1%-60% of the pesticide technical material, 0.5%-5% of a wetting agent, 2%-10% of a dispersing agent, 1%-40% of a hardening-proof agent and the balance of filler. The low-melting pesticide technical material is sufficiently frozen at the temperature being subzero 100 plus or minus 5 DEG C for 1-3 hours in a refrigerator realizing refrigeration through an air turbine, so that the material is sufficiently embrittled; other materials are added, the mixture is subjected to coarse grinding in an environment at the temperature ranging from subzero 20 DEG C to subzero 10 DEG C, then subjected to air current grinding and then mixed for 30-60 minutes after the fineness meets the standard, and the qualified wettable powder is produced. Preparation of compressed air required by air current grinding, mixing, coarse grinding and air current grinding all need to be performed in the refrigerator at the temperature ranging from subzero 20 DEG C to subzero 10 DEG C in the production process. The wettable powder and the preparation method require fewer organic solvents, are more environment-friendly and meet requirements of national policies and industrial development, and a feasible method is provided for processing of efficient and less-persistent pesticides.
Description
Technical field
The invention belongs to pesticide field, be specifically related to a kind of wetting powder containing the former medicine of low melting point and preparation method thereof.
Background technology
Pesticide wettable (WP) is the basic formulation of one with a long history in pesticidal preparations, that Technical comparing is ripe, easy to use, and it is made up of former medicine, carrier (filler), surfactant (wetting agent, dispersant etc.), adjuvant (stabilizing agent, alert toner etc.) and pulverizes reach the powder preparation of certain fineness.Wetting powder when being diluted with water to field working concentration, can be formed a kind of stable, for the suspension of spraying, after using, can reach larger uniform fold on controlling object.In general, when applying same pesticide control same insect, the drug effect of wetting powder is better than pulvis, and residual effect is better than soluble powder, and contact efficacy is slightly inferior to missible oil.
Wetting powder is due to dust pollution, and environment-friendly type is poor, is substituted just gradually by water dispersible granules.But the former medicine of some low melting points is when process water dispersible granule, easily there is the bad phenomenon such as thawing, be difficult to solve.Therefore pharmaceutical engineering teacher is when developing the preparation of the former medicine of some low melting points, and WP remains good selection.During low melting point former medicine normal temperature, part is in paste, and the method conventional when being processed into wetting powder is with an organic solvent dissolved, then adopt the white carbon of gel powder with high adsorptive to adsorb laggard row air-flow crushing.Due to the limited sorption capacity of white carbon, generally can only adsorb the liquid of 30-50%, the active constituent content therefore can processed is just very limited.And must use expensive, heavy-polluted organic solvent.Be the former medicine of low melting point of solid under some normal temperature, compared with the former medicine of common high-melting-point, fragility is inadequate, and crushing process heat is melted, and cannot be crushed to required particle diameter.
At present, other industry in order to solve some low melting points or other difficult pulverize material time, general liquid nitrogen or the dry ice of adopting carries out pretreatment to material, uses ultra low temperature to make material brittle, then pulverizes.But liquid nitrogen is expensive, there is severe contamination to environment in dry ice, cannot apply at pesticide industry, present invention, avoiding this two kinds of shortcomings, adopt natural air to carry out cooling to material brittle, safety non-pollution, and Refrigeration by air turbine cost is that pesticide industry can accept.
The present invention utilizes the material feature that meeting is brittle when low temperature, the Cryogenic air of subzero 100 DEG C is adopted to carry out low temperature brittleness process to pesticide original medicine, then carry out the processing method pulverized, successfully invented the former medicine of a kind of low melting point and directly pulverized, be processed into the method for wetting powder.
Summary of the invention
The object of the invention is in order to solve the former medicine of low melting point be processed into wetting powder time, the problem that cannot directly pulverize.
The present invention is achieved through the following technical solutions:
Containing the wetting powder of the former medicine of low melting point, be made up of the component of following percentage by weight: 1%-60% pesticide original medicine, 0.5%-5% wetting agent, 2%-10% dispersant, 1%-40% anti hardening agent, all the other are filler.
Described pesticide original medicine is selected from one or several the combination in bromoxynil octanoate, azoles humulone, Metalaxyl-M, clodinafop-propargyl, Prochloraz, chlopyrifos, cyfloxylate, bupirimate, azoles humulone.
Described wetting agent is selected from one or both the mixing in fatty alcohol-polyoxyethylene ether, Aerosol OT.
Described dispersant is selected from EO-PO block copolymer, methacrylic acid/methyl methacrylate and one or several mix in polyoxyethylated copolymer, polycarboxylate salt dispersant, naphthalenesulfonate formaldehyde condensation compound, lignosulfonates.
Described anti hardening agent is white carbon.
Described filler is selected from the combination of one or more in kaolin, diatomite, bentonite, attapulgite.
A kind of wetting powder preparation method containing the former medicine of low melting point: in proportion by the pesticide original medicine of low melting point in the freezer (employing Refrigeration by air turbine) of-100 ± 5 DEG C abundant freezing 1-3 hour, make material fully brittle; Add after unclassified stores, in the environment of-10 DEG C to-20 DEG C, then carry out air-flow crushing through coarse crushing, mix again after fineness is qualified 20-60 minute qualified wetting powder.Produce compressed air needed for air-flow crushing, mixing, coarse crushing, air-flow crushing operation in production process all to carry out in the freezer of temperature-10 DEG C to-20 DEG C, the wetting powder prepared is packed at normal temperatures.
The present invention can overcome traditional processing method and dissolution with solvents can only be adopted then to use the technique of carrier adsorption, there is organic solvent in crushing process, evaporate in environment the shortcoming polluting He can only process low content wetting powder.
The wetting powder that the present invention obtains, fineness is better than common wetting powder, and owing to not adopting organic solvent to adsorb the rear technique pulverized, decrease the use of organic solvent, the feature of environmental protection is better, meet the demand of national policy and industry development, for processing highly-effective low-residue agricultural chemicals provides a kind of feasible method.
Embodiment
In order to understand essence of the present invention better; below in conjunction with embodiment, content of the present invention is described in further detail; content mentioned in embodiment is not limitation of the invention; the following stated is only for explaining the present invention; for not departing from amendment that the present invention's spirit and principle make, replacement or improvement, all belong to the scope of protection of present invention.
Embodiment 1
First take 50 parts of former medicines of clodinafop-propargyl, put into trough type mixing machine, close freezer, open turbine air refrigeration machine simultaneously, treat that temperature of ice house is reduced to-100 ± 5 DEG C, freezing 2 hours, temperature of ice house is brought up to-10 ± 5 DEG C; Take the kaolin of 1 part of aliphatic alcohol polyethenoxy alcohol, 2.5 parts of naphthalenesulfonate formaldehyde condensation compounds, 2.5 parts of sodium lignin sulfonates, 1 part of polycarboxylate salt dispersant, 20 parts of white carbons and surplus, be sent in groove mixer successively with driving-belt, open stirring, mix 20 minutes, air-flow crushing after meal, after fineness is qualified, mixes 30 minutes in rear mixer, detection level, wetting time, suspensibility, qualified after 50% clodinafop-propargyl wetting powder.
Embodiment 2
First take 40 parts of former medicines of Prochloraz, put into trough type mixing machine, close freezer, open turbine air refrigeration machine simultaneously, treat that temperature of ice house is reduced to-100 ± 5 DEG C, freezing 3 hours, temperature of ice house is brought up to-20 DEG C ± 5 DEG C; Take the kaolin of 1 part of aliphatic alcohol polyethenoxy alcohol, 2.5 parts of EO-PO block copolymers, 3.5 parts of sodium lignin sulfonates, 25 parts of white carbons and surpluses, be sent in groove mixer successively with driving-belt, open stirring, mix 30 minutes, air-flow crushing after meal, after fineness is qualified, mixes 35 minutes in rear mixer, detection level, wetting time, suspensibility, qualified after 40% Prochloraz wetting powder.
Embodiment 3
First take 20 parts of former medicines of chlopyrifos, put into trough type mixing machine, close freezer, open turbine air refrigeration machine simultaneously, treat that temperature of ice house is reduced to-100 ± 5 DEG C, freezing 1 hour, temperature of ice house is brought up to-10 DEG C ± 5 DEG C; Take the kaolin of 1 part of aliphatic alcohol polyethenoxy alcohol, 2.5 parts of EO-PO block copolymers, 1.5 parts of sodium lignin sulfonates, 10 parts of white carbons and surpluses, be sent in groove mixer successively with transmission list, open stirring, mix 30 minutes, air-flow crushing after meal, after fineness is qualified, mixes 25 minutes in rear mixer, detection level, wetting time, suspensibility, qualified after 20% chlopyrifos wetting powder.
Embodiment 4
First take 35 parts of former medicines of Prochloraz, 10 parts of former medicines of Metalaxyl-M, put into trough type mixing machine, close freezer, open turbine air refrigeration machine simultaneously, treat that temperature of ice house is reduced to-100 ± 5 DEG C, freezing 3 hours, temperature of ice house is brought up to-20 DEG C ± 5 DEG C; Take the kaolin of 2 parts of aliphatic alcohol polyethenoxy alcohol, 3.5 parts of EO-PO block copolymers, 1.5 parts of sodium lignin sulfonates, 1 part of methacrylic acid/methyl methacrylates and polyoxyethylated copolymers, 30 parts of white carbons and surpluses, be sent in groove mixer successively with transmission list, open stirring, mix 40 minutes, air-flow crushing after meal, after fineness is qualified, 35 minutes are mixed in rear mixer, detection level, wetting time, suspensibility, qualified after 45% Prochloraz Metalaxyl-M wetting powder.
Embodiment 5
First take in proportion 35 parts of former medicines of clodinafop-propargyl, 5 parts of former medicines of azoles humulone, put into trough type mixing machine, close freezer, open turbine air refrigeration machine simultaneously, treat that temperature of ice house is reduced to-100 ± 5 DEG C, freezing 3 hours, temperature of ice house is reduced to-10 DEG C ± 5 DEG C; Take the kaolin of 2 parts of aliphatic alcohol polyethenoxy alcohol, 3.5 parts of EO-PO block copolymers, 4.5 parts of sodium lignin sulfonates, 20 parts of white carbons and surpluses, be sent in groove mixer successively with transmission list, open stirring, mix 30 minutes, air-flow crushing after meal, after fineness is qualified, mixes 30 minutes in rear mixer, detection level, wetting time, suspensibility, qualified after 40% clodinafop-propargyl azoles humulone wetting powder.
Claims (7)
1. containing the wetting powder of the former medicine of low melting point, it is characterized in that: be made up of the component of following percentage by weight: 1%-60% pesticide original medicine, 0.5%-5% wetting agent, 2%-10% dispersant, 1%-40% anti hardening agent, all the other are filler.
2. a kind of wetting powder containing the former medicine of low melting point according to claim 1, is characterized in that: described pesticide original medicine is selected from one or several the combination in bromoxynil octanoate, azoles humulone, Metalaxyl-M, clodinafop-propargyl, Prochloraz, chlopyrifos, cyfloxylate, bupirimate, azoles humulone.
3. a kind of wetting powder containing the former medicine of low melting point according to claim 1, is characterized in that: described wetting agent is selected from one or both the mixing in fatty alcohol-polyoxyethylene ether, Aerosol OT.
4. a kind of wetting powder containing the former medicine of low melting point according to claim 1, is characterized in that: described dispersant is selected from EO-PO block copolymer, methacrylic acid/methyl methacrylate and one or several mix in polyoxyethylated copolymer, polycarboxylate salt dispersant, naphthalenesulfonate formaldehyde condensation compound, lignosulfonates.
5. a kind of wetting powder containing the former medicine of low melting point according to claim 1, is characterized in that: described anti hardening agent is white carbon.
6. a kind of wetting powder containing the former medicine of low melting point according to claim 1, is characterized in that: described filler is selected from the combination of one or more in kaolin, diatomite, bentonite, attapulgite.
7., containing the wetting powder preparation method of the former medicine of low melting point: in a ratio according to claim 1, by the pesticide original medicine of low melting point in the freezer of-100 ± 5 DEG C abundant freezing 1-3 hour, make material fully brittle; Add after unclassified stores, in the environment of-10 DEG C to-20 DEG C, then carry out air-flow crushing through coarse crushing, mix again after fineness is qualified 20-60 minute qualified wetting powder.Produce compressed air needed for air-flow crushing, mixing, coarse crushing, air-flow crushing operation in production process all to carry out in the freezer of temperature-10 DEG C to-20 DEG C, the wetting powder prepared is packed at normal temperatures.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510497725.0A CN105145554A (en) | 2015-08-13 | 2015-08-13 | Wettable powder containing low-melting technical material and preparation method of wettable powder |
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| CN201510497725.0A CN105145554A (en) | 2015-08-13 | 2015-08-13 | Wettable powder containing low-melting technical material and preparation method of wettable powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105532667A (en) * | 2016-02-26 | 2016-05-04 | 江苏丰山集团股份有限公司 | Clodinafop-propargyl wettable powder and preparation method thereof |
| CN114920602A (en) * | 2022-06-14 | 2022-08-19 | 江苏剑牌农化股份有限公司 | Preparation method of environment-friendly nutritional wettable powder |
| CN115633680A (en) * | 2022-10-25 | 2023-01-24 | 山东潍坊润丰化工股份有限公司 | Granulation method of low-melting-point pesticide granules |
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| WO2002074082A1 (en) * | 2001-03-20 | 2002-09-26 | Bayer Cropscience S.A. | Phytopharmaceutical alloy compositions |
| CN1402975A (en) * | 2002-10-28 | 2003-03-19 | 通州正大农药厂 | Pesticide composition containing tebufenozide |
| CN101474590A (en) * | 2009-02-02 | 2009-07-08 | 刘高峰 | Super-low temperature pulverizator |
| CN103157541A (en) * | 2013-03-26 | 2013-06-19 | 上海金树树脂粉末有限公司 | Production process for crushing thermoplastic high-molecular materials |
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2015
- 2015-08-13 CN CN201510497725.0A patent/CN105145554A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002074082A1 (en) * | 2001-03-20 | 2002-09-26 | Bayer Cropscience S.A. | Phytopharmaceutical alloy compositions |
| CN1402975A (en) * | 2002-10-28 | 2003-03-19 | 通州正大农药厂 | Pesticide composition containing tebufenozide |
| CN101474590A (en) * | 2009-02-02 | 2009-07-08 | 刘高峰 | Super-low temperature pulverizator |
| CN103157541A (en) * | 2013-03-26 | 2013-06-19 | 上海金树树脂粉末有限公司 | Production process for crushing thermoplastic high-molecular materials |
Non-Patent Citations (1)
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| 许如芳 等: "15%炔草酯可湿性粉剂配方研究", 《现代农药》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105532667A (en) * | 2016-02-26 | 2016-05-04 | 江苏丰山集团股份有限公司 | Clodinafop-propargyl wettable powder and preparation method thereof |
| CN114920602A (en) * | 2022-06-14 | 2022-08-19 | 江苏剑牌农化股份有限公司 | Preparation method of environment-friendly nutritional wettable powder |
| CN115633680A (en) * | 2022-10-25 | 2023-01-24 | 山东潍坊润丰化工股份有限公司 | Granulation method of low-melting-point pesticide granules |
| CN115633680B (en) * | 2022-10-25 | 2024-06-07 | 山东潍坊润丰化工股份有限公司 | Granulation method of low-melting-point pesticide granules |
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Application publication date: 20151216 |