CN102308792B - Propiconazole emulsifiable granules and preparation method thereof - Google Patents
Propiconazole emulsifiable granules and preparation method thereof Download PDFInfo
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- CN102308792B CN102308792B CN201110129157.0A CN201110129157A CN102308792B CN 102308792 B CN102308792 B CN 102308792B CN 201110129157 A CN201110129157 A CN 201110129157A CN 102308792 B CN102308792 B CN 102308792B
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Abstract
The invention relates to propiconazole emulsifiable granules and a preparation method thereof, and relates to an agricultural bactericide. The propiconazole emulsifiable granules comprise the following raw materials in percentage by weight: 20%-60% of propiconazole, 8%-12% of emulsifying agent, 8%-12% of water-soluble polymer, and the balance of carriers. The preparation method comprises the following steps: mixing liquid propiconazole and the emulsifying agent uniformly firstly; adding propiconazole after mixing into a water solution of the water-soluble polymer, and mixing uniformly, thus viscous emulsion is obtained; then adding the carriers into the viscous emulsion, thus a pre-granulating mixture is obtained; and finally granulating and drying. The granules provided by the invention have quick acting and duration, can maintain a long-term superiority effect, can achieve good effect at low concentration, can reach the same bactericidal effect by utilizing a small amount of propiconazole, and have tiny pollution to crops.
Description
Technical field
The present invention relates to a kind of agriculture chemicals fungicide, relate in particular to the preparation method of a kind of propiconazole emulsifiable granules and propiconazole emulsifiable granules.
Background technology
Propiconazole (Propiconazol) is a kind of interior absorption triazole type New-type wide-spectrum bactericide with treatment and protection double action; can be absorbed by root, stem, leaf portion; and can be soon in plant strain body on conduction; the feature such as there is fungicidal spectrum wide spectrum, activity is high, sterilization speed is fast, the lasting period is long, interior suction conductivity is strong; can prevent and treat sac fungi; the disease that basidiomycetes and imperfect fungus cause; particularly, to take-all, powdery mildew, rust, root rot, water rice bakanae disease, sigatoka has good control efficiency.
At present, conventional propiconazole has microemulsion, aqueous emulsion and three kinds of formulations of missible oil, these three kinds of formulations all have deficiency at aspects such as quick-acting, lasting effect, the feature of environmental protection, have the not good problem of drug effect, need to use the propiconazole of larger dose just can reach the object of sterilization.Wherein missible oil (EC) formulation solvent used is mainly the aromatic hydrocarbon substances such as toluene and dimethylbenzene, and not only contaminated environment, has also wasted a large amount of petroleum resources, does not meet requirement and the trend of agricultural sustainable development.
Summary of the invention
The object of the invention is for described defect above, provide that a kind of consumption is little, quick-acting, lasting effect, propiconazole emulsifiable granules that the feature of environmental protection is good.
Another object of the present invention is to provide a kind of preparation method of propiconazole emulsifiable granules.
The object of the invention is to be achieved by the following technical programs.
, it is characterized in that, comprise the raw material of following weight portion: propiconazole 20-60%, emulsifier 8-12%, water-soluble polymer 8-12%, surplus is carrier.
Described propiconazole is liquid.
Described emulsifier is selected from a kind of in nonionic and anion compounded surfactant, nonionic phosphate, nonionic sulfuric ester.
Described water-soluble polymer is selected from a kind of in polyvinyl alcohol (PVA), sodium carboxymethylcellulose (CMC), sodium carboxymethyl starch (CMS), by 1:8-12, is made into the aqueous solution.
Described carrier is selected from a kind of in dextrin, sugar, urea, ammonium sulfate, glauber salt, carbonic hydroammonium, Sodium Benzoate, soluble starch.
A kind of preparation method of propiconazole emulsifiable granules; it is characterized in that; first liquid propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution of water-soluble polymer; mix the emulsion that obtains thickness; carrier is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
The invention has the beneficial effects as follows: tool of the present invention has the following advantages: 1, there is quick-acting and lasting effect, can keep long-term superior effect; 2, use low concentration just can obtain high effect, use the propiconazole of smaller dose just can reach same bactericidal effect, very little to the pollution of crop, harmless to close peak; 3, there is powerful interior suction, penetration, can kill the pathogen in invaded plants body; 4, described emulsifier has high HLB value, be not easy to be saltoutd out, described water-soluble polymer can keep colloidal stability in curing preparation, what can preparation contain the former medicine of a lot of liquid can emulsification granula, described carrier is water-soluble, with the adsorbable a lot of liquid of prilling process of rotary squeezing comminutor extrusion molding; 5, do not add organic solvent, add water emulsification completely during use, drug effect is better than other formulation of identical effective ingredient, and particle body is convenient to packing and transportation.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
embodiment 1:20% propiconazole emulsifiable granules.
Liquid propiconazole 20%, emulsifier FS-7PG(nonionic and anion compounded surfactant, this grease production of bamboo) 8%, water-soluble polymer polyvinyl alcohol (PVA) 8%, surplus is that carrier Sodium Benzoate is supplied.First propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution (PVA and water are made into the aqueous solution by 1:10) of 10% polyvinyl alcohol (PVA); mix the emulsion that obtains thickness; carrier Sodium Benzoate is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
embodiment 2:30% propiconazole emulsifiable granules.
Liquid propiconazole 30%, emulsifier SB-75(nonionic and anion compounded surfactant, this grease production of bamboo) 10%, water-soluble polymer sodium carboxymethyl starch (CMS) 12%, surplus is that carrier glauber salt is supplied.First propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution (CMS and water are made into the aqueous solution by 1:8) of 8% sodium carboxymethyl starch (CMS); mix the emulsion that obtains thickness; carrier glauber salt is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
embodiment 3:40% propiconazole emulsifiable granules.
Liquid propiconazole 40%, emulsifier FS-7PG(nonionic and anion compounded surfactant, this grease production of bamboo) 12%, water-soluble polymer sodium carboxymethylcellulose (CMC) 10%, surplus is that carrier ammonium sulfate is supplied.First propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution (CMC and water are made into the aqueous solution by 1:12) of 12% sodium carboxymethylcellulose (CMC); mix the emulsion that obtains thickness; carrier ammonium sulfate is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
embodiment 4:50% propiconazole emulsifiable granules.
Liquid propiconazole 50%, emulsifier FS-1(nonionic phosphate, this grease production of bamboo) 10%, water-soluble polymer polyvinyl alcohol (PVA) 10%, surplus is that carrier carbonic hydroammonium is supplied.First propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution (PVA and water are made into the aqueous solution by 1:10) of 10% polyvinyl alcohol (PVA); mix the emulsion that obtains thickness; carrier carbonic hydroammonium is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
embodiment 5:60% propiconazole emulsifiable granules.
Liquid propiconazole 60%, emulsifier EP60P(nonionic sulfuric ester, this grease production of bamboo) 10%, water-soluble polymer polyvinyl alcohol (PVA) 10%, surplus is that carrier soluble starch is supplied.First propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution (PVA and water are made into the aqueous solution by 1:10) of 10% polyvinyl alcohol (PVA); mix the emulsion that obtains thickness; carrier soluble starch is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
raw test case: propiconazole emulsifiable granules is to powdery mildew of cucumber field control effectiveness test.
test objective.
By field trial, with the difference on effect of Data Comparison propiconazole emulsifiable granules and other formulation.
materials and methods.
1. treatment agent and consumption: press 30 kgs/acre of calculating of spouting liquid, medicament and mu dosage are as follows.
| Process | Consumption |
| Propiconazole E G | 150 grams of a.i/hectares |
| 25% propiconazole EC | 150 grams of a.i/hectares |
| Blank | - |
2. effect statistical method: irregular observation cucumber growth situation after cucumber spray medicine, see whether this group medicament produces poisoning to cucumber, before medicine in booth cucumber downy mildew to have slight be all zero depending on disease index, within after medicine 3 days, 7 days, investigate, each is processed and gets at random five points, each point is got two strain cucumber, investigates all blades and then all blades is carried out to classification.
Stage division: take blade as unit.
0 grade---anosis.
1 grade---lesion area accounts for below 5% of one-piece blade area.
3 grades---lesion area accounts for the 6%-10% of one-piece blade area.
5 grades---lesion area accounts for the 11%-25% of one-piece blade area.
7 grades---lesion area accounts for the 26%-50% of one-piece blade area.
9 grades---lesion area accounts for the more than 51% of one-piece blade area.
Drug effect formula: the level value ﹥ of disease index=< ∑ ﹤ sick numbers of sheets at different levels * corresponding/investigate > * 100, the total number of sheets * 9.
Disease refers to growth rate=[before (disease after spray medicine refers to-spray that the front disease of medicine refers to)/100-spray medicine, disease refers to] * 100%.
Control efficiency=[check plot disease refers to that growth rate-spray medicine treatment region disease refers to growth rate]/check plot disease refers to growth rate.
results and analysis.
Result of the test is as following table.
On look unfamiliar and survey result and show, embodiment compares with missible oil, microemulsion, these three kinds of formulations of aqueous emulsion on efficacy, quick-acting and lasting effect are obvious, use the dosage of half just can obtain, than the better effect of other formulation, having powerful interior suction, penetration.
Claims (2)
1. a propiconazole emulsifiable granules, is characterized in that: the raw material by following weight portion forms: propiconazole 20-60%, and emulsifier 8-12%, water-soluble polymer 8-12%, surplus is carrier; Described emulsifier is selected from a kind of in FS-7PG, SB-75, FS-1, EP60P; Described water-soluble polymer is selected from a kind of in polyvinyl alcohol, sodium carboxymethylcellulose, sodium carboxymethyl starch, by 1:8-12, is made into the aqueous solution; Described carrier is selected from a kind of in dextrin, sugar, urea, ammonium sulfate, glauber salt, carbonic hydroammonium, Sodium Benzoate, soluble starch.
2. the preparation method of a kind of propiconazole emulsifiable granules claimed in claim 1; it is characterized in that: first liquid propiconazole and emulsifier are mixed; mixed propiconazole is added in the aqueous solution of water-soluble polymer; mix the emulsion that obtains thickness; carrier is added in the emulsion of thickness again and obtain pre-granulation mixture, last granulation is also dry.
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| CN201110129157.0A CN102308792B (en) | 2011-05-18 | 2011-05-18 | Propiconazole emulsifiable granules and preparation method thereof |
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| CN201110129157.0A CN102308792B (en) | 2011-05-18 | 2011-05-18 | Propiconazole emulsifiable granules and preparation method thereof |
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| CN102308792B true CN102308792B (en) | 2014-01-29 |
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| CN101731207B (en) * | 2009-12-30 | 2013-04-03 | 北京富力特农业科技有限责任公司 | Emulsifiable grains of emamectin benzoate and preparation method thereof |
| CN101999346B (en) * | 2010-12-17 | 2012-04-11 | 山西绿海农药科技有限公司 | Emulsifiable granule containing etofenprox composition and preparation method thereof |
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