CN116035017A - Prochloraz-flumioxazin microcapsule suspending agent and preparation method thereof - Google Patents
Prochloraz-flumioxazin microcapsule suspending agent and preparation method thereof Download PDFInfo
- Publication number
- CN116035017A CN116035017A CN202211223112.4A CN202211223112A CN116035017A CN 116035017 A CN116035017 A CN 116035017A CN 202211223112 A CN202211223112 A CN 202211223112A CN 116035017 A CN116035017 A CN 116035017A
- Authority
- CN
- China
- Prior art keywords
- flumioxazin
- metolachlor
- soluble capsule
- polyoxyethylene ether
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000375 suspending agent Substances 0.000 title claims abstract description 57
- 239000003094 microcapsule Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 64
- 239000002775 capsule Substances 0.000 claims abstract description 60
- WVQBLGZPHOPPFO-UHFFFAOYSA-N 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxypropan-2-yl)acetamide Chemical compound CCC1=CC=CC(C)=C1N(C(C)COC)C(=O)CCl WVQBLGZPHOPPFO-UHFFFAOYSA-N 0.000 claims abstract description 48
- FOUWCSDKDDHKQP-UHFFFAOYSA-N flumioxazin Chemical compound FC1=CC=2OCC(=O)N(CC#C)C=2C=C1N(C1=O)C(=O)C2=C1CCCC2 FOUWCSDKDDHKQP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002270 dispersing agent Substances 0.000 claims abstract description 33
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 16
- 239000002562 thickening agent Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000002612 dispersion medium Substances 0.000 claims abstract description 12
- 239000003755 preservative agent Substances 0.000 claims abstract description 12
- 230000002335 preservative effect Effects 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 27
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 14
- DMAXMXPDVWTIRV-UHFFFAOYSA-N 2-(2-phenylethyl)phenol Chemical compound OC1=CC=CC=C1CCC1=CC=CC=C1 DMAXMXPDVWTIRV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004359 castor oil Substances 0.000 claims description 9
- 235000019438 castor oil Nutrition 0.000 claims description 9
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 8
- 229920000877 Melamine resin Polymers 0.000 claims description 8
- 239000004640 Melamine resin Substances 0.000 claims description 8
- OOCMUZJPDXYRFD-UHFFFAOYSA-L calcium;2-dodecylbenzenesulfonate Chemical compound [Ca+2].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O OOCMUZJPDXYRFD-UHFFFAOYSA-L 0.000 claims description 8
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000013638 trimer Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 7
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 claims description 5
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 claims description 5
- 229940073769 methyl oleate Drugs 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- -1 polymethylene Polymers 0.000 claims description 4
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 2
- CDMGNVWZXRKJNS-UHFFFAOYSA-N 2-benzylphenol Chemical compound OC1=CC=CC=C1CC1=CC=CC=C1 CDMGNVWZXRKJNS-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 2
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000005056 polyisocyanate Substances 0.000 claims description 2
- 229920001228 polyisocyanate Polymers 0.000 claims description 2
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229940068984 polyvinyl alcohol Drugs 0.000 claims description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000000661 sodium alginate Substances 0.000 claims description 2
- 235000010413 sodium alginate Nutrition 0.000 claims description 2
- 229940005550 sodium alginate Drugs 0.000 claims description 2
- 239000000230 xanthan gum Substances 0.000 claims description 2
- 235000010493 xanthan gum Nutrition 0.000 claims description 2
- 229920001285 xanthan gum Polymers 0.000 claims description 2
- 229940082509 xanthan gum Drugs 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 claims 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims 1
- 150000007942 carboxylates Chemical class 0.000 claims 1
- 235000014113 dietary fatty acids Nutrition 0.000 claims 1
- 239000003995 emulsifying agent Substances 0.000 claims 1
- 239000000194 fatty acid Substances 0.000 claims 1
- 229930195729 fatty acid Natural products 0.000 claims 1
- 150000002191 fatty alcohols Chemical class 0.000 claims 1
- 229920001451 polypropylene glycol Polymers 0.000 claims 1
- 229950008882 polysorbate Drugs 0.000 claims 1
- 229920000136 polysorbate Polymers 0.000 claims 1
- 229940100515 sorbitan Drugs 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 abstract description 22
- 230000002265 prevention Effects 0.000 abstract description 4
- 235000017060 Arachis glabrata Nutrition 0.000 abstract description 3
- 244000105624 Arachis hypogaea Species 0.000 abstract description 3
- 235000010777 Arachis hypogaea Nutrition 0.000 abstract description 3
- 235000018262 Arachis monticola Nutrition 0.000 abstract description 3
- 244000068988 Glycine max Species 0.000 abstract description 3
- 235000010469 Glycine max Nutrition 0.000 abstract description 3
- 240000000111 Saccharum officinarum Species 0.000 abstract description 3
- 235000007201 Saccharum officinarum Nutrition 0.000 abstract description 3
- 235000020232 peanut Nutrition 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract 1
- 239000004480 active ingredient Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 238000009333 weeding Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 230000002363 herbicidal effect Effects 0.000 description 6
- 239000004009 herbicide Substances 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 244000058871 Echinochloa crus-galli Species 0.000 description 4
- 238000013270 controlled release Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 241000234653 Cyperus Species 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000009036 growth inhibition Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical group [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 238000012695 Interfacial polymerization Methods 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 235000005010 Scirpus paludosus Nutrition 0.000 description 2
- 229920005551 calcium lignosulfonate Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000004302 potassium sorbate Substances 0.000 description 2
- 229940069338 potassium sorbate Drugs 0.000 description 2
- 235000010241 potassium sorbate Nutrition 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 238000013268 sustained release Methods 0.000 description 2
- 239000012730 sustained-release form Substances 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- WVQBLGZPHOPPFO-LBPRGKRZSA-N (S)-metolachlor Chemical group CCC1=CC=CC(C)=C1N([C@@H](C)COC)C(=O)CCl WVQBLGZPHOPPFO-LBPRGKRZSA-N 0.000 description 1
- 241001290610 Abildgaardia Species 0.000 description 1
- 240000004230 Cyperus compressus Species 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 240000006394 Sorghum bicolor Species 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- 230000001018 virulence Effects 0.000 description 1
- 238000005303 weighing Methods 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/84—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,4
-
- 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
- A01N25/26—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 in coated particulate form
- A01N25/28—Microcapsules or nanocapsules
-
- 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
- A01N37/22—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 the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Zoology (AREA)
- Agronomy & Crop Science (AREA)
- Dentistry (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the field of A01N43, in particular to a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, wherein the preparation raw materials at least comprise the following components in percentage by mass: 1-45% of metolachlor, 1-5% of flumioxazin, 1-5% of solvent, 1-20% of oily dispersion medium, 1-5% of oil-soluble capsule material A, 0.01-5% of water-soluble capsule material A, 1-5% of oil-soluble capsule material B, 0.01-5% of water-soluble capsule material B, 1-5% of emulsifying dispersant, 1-10% of dispersant, 0.05-3% of thickener, 1-5% of antifreezing agent, 0.1-0.5% of preservative, 0.1-0.5% of defoaming agent, and water to 100% of complement, and has high system stability and good efficacy, and is effectively applied to prevention and treatment of annual gramineous weeds and partial broadleaf weeds in soybean fields, peanut fields and sugarcane fields.
Description
Technical Field
The invention relates to the field of A01N43, in particular to a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof.
Background
The chemical name of the metolachlor is (S) -2-chloro-6-ethyl-N- (2-methoxy-1-methylethyl) acetyl o-toluidine, and the metolachlor mainly plays a role in killing weeds through bud sheath and bud absorption of sprouted weeds. Is suitable for soil treatment after sowing and before seedling or transplanting of dry land crops, and can prevent and remove annual gramineous weeds, partial dicotyledonous weeds, annual sedge weeds and the like. The metolachlor is suitable for wide crop spectrum and is the main herbicide for corn and sorghum as important crop in the world. The flumioxazin is an N-phenyl peptide imide selective contact herbicide and is also an important product in other PPO inhibitor herbicides. Can be used for preventing and killing broadleaf weeds in various crops in dry farmland. The water-soluble and quick degradable water-soluble paint has low application amount, ensures the safety to the environment and has no pollution to the underground water.
The single use of the metolachlor has certain limitation, for example, chinese patent application (publication No. CN 104222074A) discloses a metolachlor water emulsion and a preparation method thereof, and particularly the metolachlor is taken as an effective active ingredient, and the water emulsion prepared by the method is practically applied, and has certain prevention effect on annual gramineous weeds and certain broadleaf weeds, but has insufficient weed killing effectiveness and universality, and limits the application range. Chinese patent application (publication No. CN 107593725A) discloses a pesticide composition containing metolachlor and flumioxazin as active ingredients, and the herbicide spectrum is expanded to a certain extent, but the system stability of the prepared composition with different dosage forms affects the exertion of the pesticide effect and the dosage of the pesticide, and the environmental and economic effects are certain.
Disclosure of Invention
In order to solve the problems, the invention provides the fine metolachlor-flumioxazin microcapsule suspending agent and the preparation method thereof, wherein the fine metolachlor and flumioxazin are separately encapsulated and then are compounded to obtain the microcapsule suspending agent with good suspension effect, so that the herbicide controlling spectrum can be expanded by combining different action mechanisms of the fine metolachlor and the flumioxazin microcapsule suspending agent, and meanwhile, the grass controlling period is prolonged, the application times and the application dosage are reduced, and the environmental pollution and the resource waste are reduced through the special slow-release and controlled-release functions of the microcapsule suspending agent.
The invention provides a metolachlor-flumioxazin microcapsule suspending agent, which is prepared from the following raw materials in percentage by mass: 1-45% of metolachlor, 1-5% of flumioxazin, 1-5% of solvent, 1-20% of oily dispersion medium, 1-5% of oil-soluble capsule wall material A, 0.01-5% of water-soluble capsule wall material A, 1-5% of oil-soluble capsule wall material B, 0.01-5% of water-soluble capsule wall material B, 1-5% of emulsifying dispersant, 1-10% of dispersant, 0.05-3% of thickener, 1-5% of antifreezing agent, 0.1-0.5% of preservative, 0.1-0.5% of defoaming agent and the balance of water to 100%.
As a preferable technical scheme, the mass ratio of the metolachlor to the flumioxazin is (3-40): 1, a step of; preferably, the mass ratio of the metolachlor to the flumioxazin is (28-40): 1.
based on the system of the invention, by adopting the metolachlor and the flumioxazin as effective active ingredients, the weeding effect of the mixed combination of the metolachlor and the flumioxazin with different proportions is found, especially when the mass ratio of the metolachlor to the flumioxazin is (28-40): 1, the weeding effect of barnyard grass, nutgrass and glossoside is synergistic, the two medicaments produce synergistic effect through different weeding mechanisms, and the dosage is reduced.
As a preferable technical scheme, the oily dispersion medium is at least one of dimethylbenzene, cyclohexanone, solvent oil and methyl oleate; preferably, the oily dispersion medium is methyl oleate.
As a preferable technical scheme, the solvent is at least one of solvent oil 150#, solvent oil 200#, xylene, toluene, soybean oil, corn oil, rapeseed oil, cottonseed oil and turpentine; preferably, the solvent is solvent oil 150#.
As a preferable technical scheme, the oil-soluble capsule wall material a and the oil-soluble capsule wall material B are respectively selected from at least one of toluene diisocyanate, 4-diphenylmethane diisocyanate, hexamethylene-1, 6-diisocyanate, isophorone diisocyanate trimer and polymethylene polyphenyl polyisocyanate; preferably, the oil-soluble capsule wall material A is hexamethylene-1, 6-diisocyanate; the oil-soluble capsule wall material B is isophorone diisocyanate trimer. The brand of isophorone diisocyanate trimer is Bayer, and is derived from Xuzhou bright Huiyang New materials Co.
As a preferable technical scheme, the water-soluble capsule material A and the water-soluble capsule material B are respectively selected from at least one of triethanolamine, urea resin prepolymer and melamine resin prepolymer; preferably, the water-soluble capsule material A is triethanolamine, and the water-soluble capsule material B is melamine resin prepolymer. The melamine resin prepolymer is of the type Plastopal BTW and is derived from Basoff.
Based on the system, the metolachlor and the flumioxazin are taken as active ingredients, and the metolachlor and the flumioxazin are independently encapsulated and then compounded, so that the controlled release and the sustained release functions of the active ingredients are effectively ensured. The inventor finds that, in the research process, a specific oil-soluble capsule material B is isophorone diisocyanate trimer and a water-soluble capsule material B is melamine resin prepolymer, and the active ingredient flumioxazin is wrapped by an interfacial polymerization method, so that the provided microcapsule suspending agent has high encapsulation efficiency, excellent wall material crosslinking degree and porosity, uniform particle size distribution and stable storage, and simultaneously the action time of the active ingredient is prolonged, so that the provided product is effectively applied to the prevention and treatment of annual gramineous weeds and part of broadleaf weeds in soybean fields, peanut fields and sugarcane fields.
As a preferable technical scheme, the emulsifying dispersant is one or more of benzyl phenol polyoxyethylene ether phosphate, castor oil polyoxyethylene ether, phenethyl phenol polyoxyethylene ether and nonylphenol polyoxyethylene ether. Preferably, the emulsifying dispersant is a combination of castor oil polyoxyethylene ether and phenethyl phenol polyoxyethylene ether; the mass ratio of the castor oil polyoxyethylene ether to the phenethyl phenol polyoxyethylene ether is 1: (0.2-1); the model of the castor oil polyoxyethylene ether is CL-40, and is derived from Nantong Tay chemical industry Co. The model of the phenethyl phenol polyoxyethylene ether is 603# and is from Nantong Tay chemical industry Co.
As a preferable technical scheme, the dispersing agent is at least one of sodium lignin sulfonate, calcium lignin sulfonate and calcium dodecyl benzene sulfonate; preferably, the dispersing agent is a combination of calcium lignosulfonate and calcium dodecylbenzene sulfonate; the mass ratio of the calcium lignin sulfonate to the calcium dodecyl benzene sulfonate is 1: (0.5-2).
Based on the system of the invention, the provided microcapsule suspending agent has long-term stable performance by adopting specific emulsifying dispersant and dispersing agent, is convenient for dispensing, has good in water diffusivity, has good drug effect maintenance under the condition of higher or lower temperature, reduces the application times and dosage, and reduces environmental pollution and resource waste.
As a preferable technical scheme, the thickener is one or more of organic bentonite, magnesium aluminum silicate, xanthan gum, polyvinyl alcohol and sodium alginate; preferably, the thickener is an organobentonite, which is available from Zhejiang Feng Hong New Material Co., ltd. Based on the system, the organic bentonite is introduced as a thickening agent, so that the organic bentonite can be dispersed into a net structure in methyl oleate, the sinking of active ingredients is effectively prevented, and the suspension effect of the microcapsule suspending agent is ensured.
As a preferable technical scheme, the antifreezing agent is at least one of ethylene glycol, 1, 2-propylene glycol and glycerol; preferably, the antifreezing agent is glycerol.
As a preferable technical scheme, the preservative is potassium sorbate.
As a preferable technical scheme, the defoaming agent is an organosilicon defoaming agent, and the organosilicon defoaming agent is derived from a medium-federal defoaming agent factory.
The invention also provides a preparation method of the metolachlor-flumioxazin microcapsule suspending agent, which at least comprises the following preparation steps:
(1) Preparing a metolachlor microcapsule suspending agent;
(2) Preparing flumioxazin microcapsule suspending agent;
(3) And mixing the metolachlor microcapsule suspending agent with the flumioxazin microcapsule suspending agent.
The beneficial effects are that:
1. the invention provides a fine metolachlor and flumioxazin microcapsule suspending agent and a preparation method thereof, wherein the fine metolachlor and flumioxazin are separately encapsulated and then compounded to obtain the microcapsule suspending agent with good suspension effect, so that the weed control spectrum can be expanded by combining different action mechanisms of the fine metolachlor and flumioxazin microcapsule suspending agent, and meanwhile, the grass control period is prolonged, the application times and the application dosage are reduced, and the environmental pollution and the resource waste are reduced by the special slow release and controlled release functions of the microcapsule suspending agent.
2. Based on the system of the invention, by adopting the metolachlor and the flumioxazin as effective active ingredients, the weeding effect of the mixed combination of the metolachlor and the flumioxazin with different proportions is found, especially when the mass ratio of the metolachlor to the flumioxazin is (28-40): 1, the weeding effect of barnyard grass, nutgrass and glossoside is synergistic, the two medicaments produce synergistic effect through different weeding mechanisms, and the dosage is reduced.
3. Based on the system of the invention, the specific oil-soluble capsule material B is isophorone diisocyanate trimer and the water-soluble capsule material B is melamine resin prepolymer, and the active ingredient flumioxazin is wrapped by an interfacial polymerization method, so that the provided microcapsule suspending agent has high encapsulation rate, excellent wall material crosslinking degree and porosity, uniform particle size distribution and stable storage, and simultaneously the action time of the active ingredient is prolonged, and the provided product is effectively applied to the prevention and treatment of annual gramineous weeds and part of broadleaf weeds in soybean fields, peanut fields and sugarcane fields.
4. Based on the system, the metolachlor and the flumioxazin are taken as active ingredients, and the metolachlor and the flumioxazin are independently encapsulated and then compounded, so that the controlled release and the sustained release functions of the active ingredients are effectively ensured.
Detailed Description
Example 1
In one aspect, the embodiment 1 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent, which is prepared from the following raw materials in percentage by mass: 40% of metolachlor, 1% of flumioxazin, 3% of solvent, 10% of oily dispersion medium, 3% of oil-soluble capsule material A, 2% of water-soluble capsule material A, 2% of oil-soluble capsule material B, 1% of water-soluble capsule material B, 3% of emulsifying dispersant, 5% of dispersant, 1% of thickener, 2% of antifreezing agent, 0.2% of preservative, 0.3% of defoaming agent and 100% of water.
The oily dispersion medium is methyl oleate.
The solvent is solvent oil 150#.
The oil-soluble capsule wall material A is hexamethylene-1, 6-diisocyanate; the oil-soluble capsule wall material B is isophorone diisocyanate trimer. The brand of isophorone diisocyanate trimer is Bayer, and is derived from Xuzhou bright Huiyang New materials Co.
The water-soluble capsule material A is triethanolamine, and the water-soluble capsule material B is melamine resin prepolymer. The melamine resin prepolymer is of the type Plastopal BTW and is derived from Basoff.
The emulsifying dispersant is a combination of castor oil polyoxyethylene ether and phenethyl phenol polyoxyethylene ether; the mass ratio of the castor oil polyoxyethylene ether to the phenethyl phenol polyoxyethylene ether is 1:0.5.
the dispersing agent is a combination of calcium lignosulfonate and calcium dodecyl benzene sulfonate; the mass ratio of the calcium lignin sulfonate to the calcium dodecyl benzene sulfonate is 1:1.
the thickener is organic bentonite and is sourced from Zhejiang Feng Hong New Material Co.Ltd.
The antifreezing agent is glycerol.
The preservative is potassium sorbate.
The defoaming agent is an organosilicon defoaming agent, and the organosilicon defoaming agent is derived from a medium federal defoaming agent factory.
The embodiment 1 of the invention provides a preparation method of a fine metolachlor-flumioxazin microcapsule suspending agent, which comprises the following preparation steps:
(1) Preparing a metolachlor microcapsule suspending agent;
(2) Preparing flumioxazin microcapsule suspending agent;
(3) And mixing the metolachlor microcapsule suspending agent with the flumioxazin microcapsule suspending agent.
The preparation method of the metolachlor microcapsule suspending agent specifically comprises the following steps: mixing the metolachlor, the oil-soluble capsule wall material A and a solvent to form a homogeneous phase A; mixing one half of the weight of defoamer and emulsifying dispersant and one third of the weight of water into a homogeneous phase B; mixing the water-soluble capsule wall material A with the other third of water by weight to form a homogeneous phase C; mixing one half of the dispersant, the thickener, the antifreezing agent and the preservative into a homogeneous phase D; and shearing the homogeneous phase B under a high-speed shearing machine, adding the homogeneous phase A into the homogeneous phase B, stirring and mixing, adding the homogeneous phase C, adding the homogeneous phase D after the dripping of the homogeneous phase C is finished, and stirring and mixing to obtain the metolachlor microcapsule suspending agent.
The preparation method of the flumioxazin microcapsule suspending agent specifically comprises the following steps: grinding flumioxazin, the balance of the emulsifying dispersant, the balance of the dispersant and the oily dispersion medium into a homogeneous phase E; mixing the homogeneous phase E with the oil-soluble capsule wall material B to obtain a homogeneous phase F; mixing the water-soluble capsule material B with the balance of water to form a homogeneous phase G; mixing the rest of dispersing agent, thickening agent, antifreezing agent and preservative into homogeneous phase H; and adding the homogeneous phase G into the homogeneous phase F, stirring and mixing, adding the homogeneous phase H after the dropwise addition of the homogeneous phase G is finished, and stirring and mixing to obtain the flumioxazin microcapsule suspending agent.
Example 2
The embodiment 2 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode of the suspending agent is the same as the embodiment 1, wherein the suspending agent comprises the following preparation raw materials in percentage by mass: 28.6% of metolachlor, 1% of flumioxazin, 3% of solvent, 10% of oily dispersion medium, 3% of oil-soluble capsule wall material A, 2% of water-soluble capsule wall material A, 2% of oil-soluble capsule wall material B, 1% of water-soluble capsule wall material B, 3% of emulsifying dispersant, 5% of dispersant, 1% of thickener, 2% of antifreezing agent, 0.2% of preservative, 0.3% of defoaming agent and the balance of water to 100%.
Example 3
The embodiment 3 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode of the suspending agent is the same as the embodiment 1, wherein the suspending agent comprises the following preparation raw materials in percentage by mass: 20% of metolachlor, 1% of flumioxazin, 3% of solvent, 10% of oily dispersion medium, 3% of oil-soluble capsule material A, 2% of water-soluble capsule material A, 2% of oil-soluble capsule material B, 1% of water-soluble capsule material B, 3% of emulsifying dispersant, 5% of dispersant, 1% of thickener, 2% of antifreezing agent, 0.2% of preservative, 0.3% of defoaming agent and 100% of water.
Example 4
The embodiment 4 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode of the suspending agent is the same as the embodiment 1, wherein the suspending agent comprises the following preparation raw materials in percentage by mass: 20% of metolachlor, 3% of flumioxazin, 3% of solvent, 10% of oily dispersion medium, 3% of oil-soluble capsule wall material A, 2% of water-soluble capsule wall material A, 2% of oil-soluble capsule wall material B, 1% of water-soluble capsule wall material B, 3% of emulsifying dispersant, 5% of dispersant, 1% of thickener, 2% of antifreezing agent, 0.2% of preservative, 0.3% of defoaming agent and 100% of water.
Example 5
The embodiment 5 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode of the suspending agent is the same as the embodiment 1, wherein the suspending agent comprises the following preparation raw materials in percentage by mass: 20% of metolachlor, 6% of flumioxazin, 3% of solvent, 10% of oily dispersion medium, 3% of oil-soluble capsule wall material A, 2% of water-soluble capsule wall material A, 2% of oil-soluble capsule wall material B, 1% of water-soluble capsule wall material B, 3% of emulsifying dispersant, 5% of dispersant, 1% of thickener, 2% of antifreezing agent, 0.2% of preservative, 0.3% of defoaming agent and 100% of water.
Comparative example 1
The comparative example 1 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode is the same as the example 1, wherein the oil-soluble capsule wall material A and the oil-soluble capsule wall material B are toluene diisocyanate; the water-soluble capsule material A and the water-soluble capsule material B are ethylenediamine.
Comparative example 2
The comparative example 2 of the invention provides a fine metolachlor-flumioxazin microcapsule suspending agent and a preparation method thereof, and the specific implementation mode is the same as the example 1, wherein the emulsifying dispersant is phenethyl phenol polyoxyethylene ether; the dispersing agent is calcium dodecyl benzene sulfonate.
Performance test method
1. Thermal storage stability: the fine metolachlor-flumioxazin microcapsule suspension prepared in the examples and the comparative examples is placed in a 50mL glass bottle to be sealed, stored in an incubator at 54+/-2 ℃ for 14 days, taken out, observed and recorded for the appearance of the product, and the results are shown in Table 1.
TABLE 1,
2. And (5) measuring the weeding effects of the metolachlor and the flumioxazin with different proportions.
The specific test method comprises the following steps:
potting soil spraying (NY/T1155.3-2006) was used: the method comprises the steps of filling quantitative soil in a porcelain pot with the height of 6cm and the diameter of 9cm, sowing 15-20 seeds of weeds to be tested in the porcelain pot, covering fine soil with the thickness of 0.5-1 cm, watering, placing in a greenhouse for cultivation for standby, carrying out soil spraying treatment after 24 hours, spraying 1mL of liquid medicine into each pot, repeating the treatment for 4 times, and setting the treatment without the medicament as a control. Culturing the treated test material in a greenhouse, periodically observing the growth condition of target weeds, visually observing the damage symptoms and growth inhibition condition of the target after 21d, weighing the fresh weight or the fresh weight of the overground part, and evaluating the virulence effect of the agent on the target weeds according to the target growth inhibition rate or the fresh weight inhibition rate.
Investigation method
After 21d of test treatment, the target victim symptom and the growth inhibition condition were visually examined, and the fresh weight of the aerial part was weighed, and the fresh weight inhibition rate (%) was calculated.
Combined action evaluation method
The mode of action of the herbicide combination was evaluated according to the Gowing method (NY/T1155.7-2006) and the formula is as follows:
E 0 ＝X+Y-XY/100
wherein X is the fresh weight inhibition rate of flumioxazin to target weeds when a certain dosage is used singly;
y is the fresh weight inhibition rate of the metolachlor on target weeds when a certain dosage is used singly;
e is an actual measurement value of the fresh weight inhibition rate of the target weeds when the flumioxazin and the metolachlor are mixed;
E 0 is a theoretical value of the fresh weight inhibition rate of the two medicaments of flumioxazin and metolachlor on target weeds when the two medicaments are mixed.
Evaluation criteria: the synergy is shown when E0-E is more than or equal to 10%, the summation is shown when E0-E is less than 10% and the antagonism is shown when E0-E is less than or equal to 10%.
Table 2 herbicidal effects of flumioxazin, metolachlor and their blends.
Test results show that in the mixed combination of the flumioxazin and the metolachlor, the proportion is (A: B=40:1 and A: B=28.6:1) that the flumioxazin and the metolachlor have synergistic effects on weeding effects of barnyard grass, nutgrass flatsedge and glossoma anatipestifer, and the proportion is (A: B=20:1, A: B=20:3 and A: B=20:6) that the fluminella, the sedge and the glossoma anatipestifer have additive effects on weeding effects of barnyard grass, glossoma anatipestifer.
Claims (10)
1. The metolachlor-flumioxazin microcapsule suspending agent is characterized by comprising the following preparation raw materials in percentage by mass: 1-45% of metolachlor, 1-5% of flumioxazin, 1-5% of solvent, 1-20% of oily dispersion medium, 1-5% of oil-soluble capsule wall material A, 0.01-5% of water-soluble capsule wall material A, 1-5% of oil-soluble capsule wall material B, 0.01-5% of water-soluble capsule wall material B, 1-5% of emulsifying dispersant and 1-10% of dispersant, and the balance of water to 100%.
2. The metolachlor-flumioxazin microcapsule suspension agent according to claim 1, which is characterized by further comprising the following preparation raw materials in percentage by mass: 0.05-3% of thickening agent, 1-5% of antifreezing agent, 0.1-0.5% of preservative and 0.1-0.5% of defoaming agent.
3. The fine metolachlor-flumioxazin microcapsule suspension according to claim 1 or 2, wherein the oil-soluble capsule wall material A and the oil-soluble capsule wall material B are respectively selected from at least one of toluene diisocyanate, 4-diphenylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, isophorone diisocyanate trimer and polymethylene polyphenyl polyisocyanate.
4. The fine metolachlor-flumioxazin microcapsule suspension according to claim 3, wherein the emulsifier is one or more of castor oil polyoxyethylene ether, phenethyl phenol polyoxyethylene ether, calcium dodecyl benzene sulfonate, polysorbate, sorbitan fatty acid ester, phenethyl phenol polyoxypropylene ether, nonylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, polyoxyethylene ether carboxylate, polyoxyethylene ether vinyl ether, alkylphenol polyoxyethylene ether sulfosuccinate and castor oil ethylene oxide adduct.
5. The fine metolachlor-flumioxazin microcapsule suspension agent according to claim 4, wherein the water-soluble capsule material A and the water-soluble capsule material B are respectively selected from at least one of triethanolamine, urea resin prepolymer and melamine resin prepolymer.
6. The fine metolachlor-flumioxazin microcapsule suspension agent according to claim 5, wherein the emulsifying dispersant is one or more of benzyl phenol polyoxyethylene ether phosphate, castor oil polyoxyethylene ether, phenethyl phenol polyoxyethylene ether and nonylphenol polyoxyethylene ether.
7. The fine metolachlor-flumioxazin microcapsule suspension agent according to claim 6, wherein the dispersing agent is at least one of sodium lignin sulfonate, calcium lignin sulfonate and calcium dodecyl benzene sulfonate.
8. The metolachlor-flumioxazin microcapsule suspension agent according to claim 7, wherein the thickener is one or more of organic bentonite, magnesium aluminum silicate, xanthan gum, polyvinyl alcohol and sodium alginate.
9. The metolachlor-flumioxazin microcapsule suspension agent according to claim 8, wherein the solvent is at least one of xylene, cyclohexanone, solvent oil and methyl oleate.
10. A process for the preparation of a fine metolachlor-flumioxazin microcapsule suspension according to any one of claims 1-9, characterized in that it comprises at least the following preparation steps:
(1) Preparing a metolachlor microcapsule suspending agent;
(2) Preparing flumioxazin microcapsule suspending agent;
(3) And mixing the metolachlor microcapsule suspending agent with the flumioxazin microcapsule suspending agent.
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