CN112772669A - Iprodione and procymidone suspending agent and preparation method thereof - Google Patents
Iprodione and procymidone suspending agent and preparation method thereof Download PDFInfo
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- CN112772669A CN112772669A CN202011624702.9A CN202011624702A CN112772669A CN 112772669 A CN112772669 A CN 112772669A CN 202011624702 A CN202011624702 A CN 202011624702A CN 112772669 A CN112772669 A CN 112772669A
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- iprodione
- procymidone
- suspending agent
- preservative
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- 239000005867 Iprodione Substances 0.000 title claims abstract description 57
- ONUFESLQCSAYKA-UHFFFAOYSA-N iprodione Chemical compound O=C1N(C(=O)NC(C)C)CC(=O)N1C1=CC(Cl)=CC(Cl)=C1 ONUFESLQCSAYKA-UHFFFAOYSA-N 0.000 title claims abstract description 57
- QXJKBPAVAHBARF-BETUJISGSA-N procymidone Chemical compound O=C([C@]1(C)C[C@@]1(C1=O)C)N1C1=CC(Cl)=CC(Cl)=C1 QXJKBPAVAHBARF-BETUJISGSA-N 0.000 title claims abstract description 57
- 239000000375 suspending agent Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003463 adsorbent Substances 0.000 claims abstract description 24
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004202 carbamide Substances 0.000 claims abstract description 23
- 239000003755 preservative agent Substances 0.000 claims abstract description 22
- 230000002335 preservative effect Effects 0.000 claims abstract description 22
- 239000002562 thickening agent Substances 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 238000009736 wetting Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 15
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 15
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 15
- 239000004299 sodium benzoate Substances 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000011259 mixed solution Substances 0.000 claims description 26
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052627 muscovite Inorganic materials 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 15
- 229920000570 polyether Polymers 0.000 claims description 15
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 229920001285 xanthan gum Polymers 0.000 claims description 14
- 239000000230 xanthan gum Substances 0.000 claims description 14
- 229940082509 xanthan gum Drugs 0.000 claims description 14
- 235000010493 xanthan gum Nutrition 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 239000006229 carbon black Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 9
- 229920002545 silicone oil Polymers 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 2
- 239000004546 suspension concentrate Substances 0.000 claims 2
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 19
- 239000003899 bactericide agent Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000000575 pesticide Substances 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 31
- 230000015556 catabolic process Effects 0.000 description 19
- 238000006731 degradation reaction Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- -1 polyoxyethylene Polymers 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 239000000417 fungicide Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000002070 germicidal effect Effects 0.000 description 3
- JPMIIZHYYWMHDT-UHFFFAOYSA-N octhilinone Chemical compound CCCCCCCCN1SC=CC1=O JPMIIZHYYWMHDT-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000012424 soybean oil Nutrition 0.000 description 2
- 239000003549 soybean oil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- 241000918584 Pythium ultimum Species 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- QYFRTHZXAGSYGT-UHFFFAOYSA-L hexaaluminum dipotassium dioxosilane oxygen(2-) difluoride hydrate Chemical compound O.[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O QYFRTHZXAGSYGT-UHFFFAOYSA-L 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/38—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/32—Cyclic imides of polybasic carboxylic acids or thio analogues thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The application relates to the field of pesticide bactericides and particularly discloses a iprodione and procymidone suspending agent and a preparation method thereof, wherein the iprodione and procymidone suspending agent comprises the following substances in parts by weight: 444-510 parts of water; 140-180 parts of iprodione; 240 to 280 portions of procymidone; 45-55 parts of wetting dispersant; 8-14 parts of a thickening agent; 0.6-2.1 parts of adsorbent; 45-52 parts of urea; 4.2-8.6 parts of preservative, wherein the preservative comprises sodium benzoate and cason, and the weight part ratio of the sodium benzoate to the cason in each part of preservative is (3-6): (1.2-2.6) and has the effect of reducing harm of procymidone and iprodione to the ecological environment; the preparation method has the advantage of improving the mixing uniformity of all materials in the suspending agent.
Description
Technical Field
The application relates to the field of pesticide bactericides, in particular to a iprodione and procymidone suspending agent and a preparation method thereof.
Background
Agricultural fungicides are a class of agricultural chemicals used to control plant diseases caused by various pathogenic microorganisms, generally referred to as fungicides.
In the related technology, a sterilization composition containing procymidone and iprodione is provided, and comprises 100g of iprodione, 250g of procymidone, 80g of alkylphenol polyoxyethylene, 5.5g of magnesium aluminum silicate, 5g of ethylene glycol, 4g of soybean oil, 300g of deionized water and 0.8g of xanthan gum. Adding iprodione, procymidone, alkylphenol polyoxyethylene, magnesium aluminum silicate, glycol and xanthan gum into a high-speed cutting and stirring machine for stirring and mixing; adding the mixture into a duplex high-speed sand mill, then adding deionized water, and carrying out high-speed grinding for 8 hours; filtering the suspension through a standard sieve, and then adding the suspension into a liquid storage tank to stand for 4 hours to obtain the composition.
When the user sprays the bactericidal composition, the bactericidal composition inevitably enters the soil and accumulates in the soil, so that the ecological environment is easily damaged.
Disclosure of Invention
In order to accelerate the degradation rate of procymidone and iprodione in soil, reduce the residual quantity of procymidone and iprodione in soil and reduce the harm of procymidone and iprodione to the ecological environment, the application provides a iprodione and procymidone suspending agent and a preparation method thereof.
In a first aspect, the iprodione and procymidone suspending agent provided by the application adopts the following technical scheme:
the iprodione and procymidone suspending agent comprises the following substances in parts by weight: 444-510 parts of water; 140-180 parts of iprodione; 240 to 280 portions of procymidone; 45-55 parts of wetting dispersant; 8-14 parts of a thickening agent; 0.6-2.1 parts of adsorbent; 45-52 parts of urea; 4.2-8.6 parts of preservative, wherein the preservative comprises sodium benzoate and cason, and the weight part ratio of the sodium benzoate to the cason in each part of preservative is (3-6): (1.2-2.6).
By adopting the technical scheme, on one hand, the addition of the urea is beneficial to the absorption of more suspending agents by the plants, and particularly has a great enhancement effect on reducing the absorption time of the plants on the procymidone, thereby reducing the possibility that the suspending agents fall into the soil to harm the ecological environment; on the other hand, when acid rain is encountered, acid substances in the acid rain fall into the soil, the pH value of the soil is reduced, so that the degradation rate of the iprodione and the procymidone in the soil is reduced, the urea falls into the soil along with the iprodione and the procymidone, and the pH value of the soil is increased under the neutralization effect of the urea on the acid substances, so that the degradation rate of the iprodione and the procymidone in the soil is increased, and the residual quantity of the iprodione and the procymidone in the soil is reduced. The purpose of reducing harm of procymidone and iprodione to the ecological environment is realized through the action of urea on the two aspects.
Preferably, the suspending agent comprises the following substances in parts by weight: 462 parts of water; 160 parts of iprodione; 260 parts of procymidone; 50 parts of wetting dispersant; 8-14 parts of a thickening agent; 0.6-2.1 parts of adsorbent; 50 parts of urea; 4.2-8.6 parts of preservative, wherein the preservative comprises sodium benzoate and cason, and the weight part ratio of the sodium benzoate to the cason in each part of preservative is (3-6): (1.2-2.6).
By adopting the technical scheme, the experimental data show that the suspending agent prepared by adopting the proportion has better degradation rate.
Preferably, the adsorbent comprises polyether modified organic silicon and dimethyl silicone oil, and the weight part ratio of the polyether modified organic silicon to the dimethyl silicone oil in each part of the adsorbent is 2: 1.
Through adopting above-mentioned technical scheme, spray the suspending agent on plant leaf surface back, the adsorbent expands fast and adsorbs and form a layer of film on the leaf surface to make the spore of fungi etc. be difficult for producing the diffusion under the effect of wind.
Preferably, the suspending agent further comprises 8-15 parts by weight of muscovite.
By adopting the technical scheme, the degradation speed of iprodione and procymidone in soil is further accelerated by adding muscovite; in addition, the muscovite is in a sheet structure, so that the muscovite is easy to topple under the action of the self structure after falling on the blade, and the expansion speed of the adsorbent on the blade is accelerated.
Preferably, the wetting and dispersing agent comprises SP-SC 3266.
By adopting the technical scheme, when the wetting dispersant is adopted, the suspending agent can obtain better suspension rate.
Preferably, the thickening agent comprises xanthan gum, white carbon black and magnesium aluminum silicate, and the weight part ratio of the xanthan gum, the white carbon black and the magnesium aluminum silicate in each part of the thickening agent is (3-6): (4-6): 1.5.
by adopting the technical scheme, when the thickener is compounded by three types of xanthan gum, white carbon black and magnesium aluminum silicate, the suspending agent has better anti-settling property and viscosity.
In a second aspect, the application provides a preparation method of a iprodione and procymidone suspending agent, which adopts the following technical scheme:
s1, adding iprodione, procymidone, a wetting dispersant, an adsorbent, urea and part of a thickening agent into part of water, and uniformly stirring to obtain a mixed solution; adding the preservative and the rest of the thickening agent into the rest of the water, and uniformly mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
By adopting the technical scheme, the mode of mixing the mixed solution and the prefabricated solution after separate preparation is adopted, so that the mixing uniformity of all materials in the suspending agent is improved.
S1, adding iprodione, procymidone, a wetting dispersant, an adsorbent, urea, muscovite and part of a thickening agent into part of water, and uniformly stirring to obtain a mixed solution; adding the preservative and the rest of the thickening agent into the rest of the water, and uniformly mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
By adopting the technical scheme, the mode of mixing the mixed solution and the prefabricated solution after separate preparation is adopted, so that the mixing uniformity of all materials in the suspending agent is improved.
In summary, the present application has the following beneficial effects:
1. the suspending agent adopts urea, so that the degradation rate of iprodione and procymidone in soil is accelerated, the residual quantity of iprodione and procymidone in soil is reduced, and the effect of reducing the influence of pesticide on ecological environment is realized.
2. According to the preparation method of the suspending agent, the mixing uniformity of all substances is improved by separately preparing the prefabricated liquid and the mixed liquid and then mixing the prefabricated liquid and the mixed liquid.
Detailed Description
The present application will be described in further detail with reference to examples.
The materials used in the examples and comparative examples are commercially available, with polyether modified silicone available from Hengxin chemical as THIX-299.
Examples
Example 1
A iprodione and procymidone suspending agent comprises the following substances: 140g of iprodione; 280g of procymidone; 50g of wetting dispersant, wherein the wetting dispersant is SP-SC 3266; 45g of urea; 12.5g of thickening agent, wherein the thickening agent is 5g of magnesium aluminum silicate, 6g of white carbon black and 1.5g of xanthan gum; 0.6g of adsorbent; the adsorbent is polyether modified organic silicon; 444g of water; 8.6g of preservative, and 6g of sodium benzoate and 2.6g of cason.
S1, adding iprodione, procymidone, SP-SC3266, urea, magnesium aluminum silicate, white carbon black and polyether modified organic silicon into 400g of water, and uniformly stirring to obtain a mixed solution; adding sodium benzoate, Kathon and xanthan gum into the rest water, and mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
Examples 2 to 4
Examples 2-4 differ from example 1 in that: the amounts of each substance added were varied and are as specified in the table below.
| Mass of material (g) | Example 1 | Example 2 | Example 3 | Example 4 |
| Water (W) | 444 | 510 | 462 | 462 |
| Iprodione | 140 | 160 | 180 | 160 |
| Pythium ultimum | 280 | 260 | 240 | 260 |
| SP-SC3266 | 50 | 55 | 45 | 50 |
| Urea | 45 | 52 | 50 | 50 |
| Magnesium aluminum silicate | 5 | 3 | 6 | 5 |
| White carbon black | 6 | 4 | 6 | 5 |
| Xanthan gum | 1.5 | 1 | 2 | 1.5 |
| Sodium benzoate | 3 | 3 | 6 | 4 |
| Kathon | 2.6 | 1.2 | 1.2 | 2 |
| Polyether modified organic silicon | 0.6 | 1.5 | 2.1 | 1.5 |
Example 5
This example differs from example 4 in that: the adsorbent is 0.5g of polyether modified organic silicon and 1g of dimethyl silicone oil.
Example 6
This example differs from example 5 in that: the adsorbent was 0.75g of polyether modified silicone and 0.75g of dimethicone.
Example 7
This example differs from example 5 in that: the adsorbent is 1g of polyether modified organic silicon and 0.5g of dimethyl silicone oil.
Example 8
A iprodione and procymidone suspending agent comprises the following substances: 160g of iprodione; 260g of procymidone; 50g of wetting dispersant, wherein the wetting dispersant is SP-SC 3266; 50g of urea; 11.5g of thickening agent, wherein the thickening agent comprises 5g of magnesium aluminum silicate, 5g of white carbon black and 1.5g of xanthan gum; 1.5g of adsorbent, wherein the adsorbent is polyether modified organic silicon 1g and dimethyl silicone oil 0.5 g; 462g of water; 6g of preservative, wherein the preservative is 4g of sodium benzoate and 2g of cason; 8g of muscovite.
A preparation method of iprodione and procymidone suspending agents comprises the following steps: s1, adding iprodione, procymidone, SP-SC3266, urea, magnesium aluminum silicate, white carbon black, polyether modified organic silicon, dimethyl silicone oil and muscovite into 400g of water, and uniformly stirring to obtain a mixed solution; adding sodium benzoate, Kathon and xanthan gum into the rest water, and mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
Example 9
This example differs from example 8 in that: muscovite 12 g.
Example 10
This example differs from example 8 in that: 15g of muscovite.
Comparative example
Comparative example 1
A sterilization composition containing procymidone and iprodione comprises 100g of iprodione, 250g of procymidone, 80g of alkylphenol polyoxyethylene, 5.5g of magnesium aluminum silicate, 5g of ethylene glycol, 4g of soybean oil, 300g of deionized water and 0.8g of xanthan gum. Adding iprodione, procymidone, alkylphenol polyoxyethylene, magnesium aluminum silicate, glycol and xanthan gum into a high-speed cutting and stirring machine for stirring and mixing; adding the mixture into a duplex high-speed sand mill, adding deionized water, and grinding for 8 hours; filtering the suspension through a standard sieve, and then adding the suspension into a liquid storage tank to stand for 4 hours to obtain the composition.
Comparative example 2
This comparative example differs from example 1 in that: does not contain urea.
Comparative example 3
This comparative example differs from example 8 in that: does not contain urea.
Performance test
Rate of degradation
The suspending agents obtained in examples 1 to 10 and comparative examples 1 to 3 were dissolved in water, respectively, to prepare fungicides. Wherein the preparation ratio of the suspending agent to water is 1g of suspending agent: 499g of water.
In a laboratory, 13 groups of soil with the same components are selected and 500g of soil with the same components, the bactericides prepared in examples 1 to 10 and comparative example 1 are respectively and uniformly mixed with a group of soil, and then the soil added with the bactericides is subjected to simulated natural light treatment, wherein the dosage of the bactericides is 500 g.
The mass fractions X of iprodione and procymidone in the soil leachate after 2h, 3 days, 8 days and 14 days after the application were determined by the method for determining the mass fractions of procymidone and iprodione in the standard No. Q/370112SDH 012-2018 and recorded in Table 1.
Taking the mass fraction of iprodione or procymidone measured 2h after application as X0Respectively measuring the degradation rate F of iprodione and procymidone for 3 days according to the formula 1110 days degradation rate F2And a degradation rate F of 20 days3。
Formula 1F ═ X0-X)*100％/X0Wherein F denotes F1、F2、F3And X is the mass fraction X of iprodione and procymidone in the soil leaching solution after 3 days, 8 days and 14 days.
The soil leaching solution is prepared by adding 50g of soil into a 200ml beaker, adding methanol to dissolve and fix the volume, and filtering through a 0.45 mu m filter membrane after ultrasonic oscillation for 1 h.
TABLE 1
TABLE 2
It can be seen from tables 1 and 2 and examples 4 and 5 that when dimethyl silicone oil and polyether modified silicone are used as the adsorbent in example 5 and only polyether modified silicone is used as the adsorbent in example 4, the degradation rate of the bactericide prepared in example 4 in 3 days is higher than that of the bactericide prepared in example 5.
As can be seen by combining tables 1 and 2 and examples 7 and 8, when muscovite is added in example 8, the degradation rate of the bactericide prepared in example 8 is higher than that of the bactericide prepared in example 7, and this is probably because, when the bactericide containing muscovite is added to soil, muscovite adheres to the soil, and when light is irradiated on the soil, particularly on the muscovite through the soil voids, the light is reflected by the muscovite, thereby increasing the sunlight at the voids inside the soil to accelerate the degradation of the bactericide.
As can be seen by combining tables 1 and 2 with example 1 and comparative example 1, the suspending agent provided by the application has higher degradation rate.
It can be seen by combining tables 1 and 2 and example 1, comparative example 2, and example 8 and comparative example 3 that the addition of urea can significantly improve the degradation rate of the bactericide and increase the degradation rate of the bactericide, which may be because urea can neutralize acidic substances in soil, thereby reducing the influence of acidic substances on the degradation rate of the bactericide, achieving the purpose of improving the degradation rate and the degradation rate of the bactericide, and further achieving the effect of reducing the influence of pesticides on the ecological environment.
Diffusion rate
The suspending agents obtained in examples 7 to 10 were dissolved in water, respectively, to prepare fungicides. Wherein the preparation ratio of the suspending agent to water is 1g of suspending agent: 9999g of water.
A piece of glass was taken, a drop of the bactericide was dropped on the glass at the same height using a test tube, and the spread area of the bactericide after 5 seconds was measured and recorded in Table 3.
TABLE 3
As can be seen by combining examples 7 and 8 with table 3, the addition of muscovite mica significantly increased the speed of application of the biocide, possibly due to: muscovite is sheet structure, easily takes place to empty under self structural action after muscovite falls on the blade, and muscovite can promote liquid around to spread all around when empting to accelerate the expanding speed of germicide liquid drop on the blade, accelerate the absorption of blade to germicide, thereby reduce the volume of the germicide that falls into in the soil, with the possibility of harm ecological environment in the reduction suspending agent falls into soil.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The iprodione and procymidone suspending agent is characterized by comprising the following substances in parts by weight: 444-510 parts of water; 140-180 parts of iprodione; 240 to 280 portions of procymidone; 45-55 parts of wetting dispersant; 8-14 parts of a thickening agent; 0.6-2.1 parts of adsorbent; 45-52 parts of urea; 4.2-8.6 parts of preservative, wherein the preservative comprises sodium benzoate and cason, and the weight part ratio of the sodium benzoate to the cason in each part of preservative is (3-6): (1.2-2.6).
2. The iprodione and procymidone suspending agent according to claim 1, characterized in that: the suspending agent comprises the following substances in parts by weight: 462 parts of water; 160 parts of iprodione; 260 parts of procymidone; 50 parts of wetting dispersant; 8-14 parts of a thickening agent; 0.6-2.1 parts of adsorbent; 50 parts of urea; 4.2-8.6 parts of preservative, wherein the preservative comprises sodium benzoate and cason, and the weight part ratio of the sodium benzoate to the cason in each part of preservative is (3-6): (1.2-2.6).
3. The iprodione and procymidone suspending agent according to claim 2, characterized in that: the adsorbent comprises polyether modified organic silicon and dimethyl silicone oil, and the weight part ratio of the polyether modified organic silicon to the dimethyl silicone oil in each part of the adsorbent is 2: 1.
4. The iprodione and procymidone suspending agent according to claim 2, characterized in that: the suspending agent also comprises 8-15 parts by weight of muscovite.
5. The iprodione and procymidone suspending agent according to claim 2, characterized in that: the wetting and dispersing agent comprises SP-SC 3266.
6. The iprodione and procymidone suspending agent according to claim 2, characterized in that: the thickening agent comprises xanthan gum, white carbon black and magnesium aluminum silicate, wherein the weight part ratio of the xanthan gum, the white carbon black and the magnesium aluminum silicate in each part of the thickening agent is (3-6): (4-6): 1.5.
7. a process for the preparation of a iprodione and procymidone suspension concentrate as defined in any one of claims 1 to 3, characterized in that: s1, adding iprodione, procymidone, a wetting dispersant, an adsorbent, urea and part of a thickening agent into part of water, and uniformly stirring to obtain a mixed solution; adding the preservative and the rest of the thickening agent into the rest of the water, and uniformly mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
8. A process for the preparation of a iprodione and procymidone suspension concentrate as defined in claim 4, characterized in that: s1, adding iprodione, procymidone, a wetting dispersant, an adsorbent, urea, muscovite and part of a thickening agent into part of water, and uniformly stirring to obtain a mixed solution; adding the preservative and the rest of the thickening agent into the rest of the water, and uniformly mixing to obtain a prefabricated liquid;
s2, sanding the mixed solution until the particle size of the mixed solution reaches 2.7-3.5 μm;
and S3, uniformly stirring and dispersing the mixed solution treated in the S2 and the prepared solution to obtain the suspending agent.
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