CN105145567B - pretilachlor aqueous emulsion and preparation method thereof - Google Patents
pretilachlor aqueous emulsion and preparation method thereof Download PDFInfo
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- CN105145567B CN105145567B CN201510570132.2A CN201510570132A CN105145567B CN 105145567 B CN105145567 B CN 105145567B CN 201510570132 A CN201510570132 A CN 201510570132A CN 105145567 B CN105145567 B CN 105145567B
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- YLPGTOIOYRQOHV-UHFFFAOYSA-N Pretilachlor Chemical compound CCCOCCN(C(=O)CCl)C1=C(CC)C=CC=C1CC YLPGTOIOYRQOHV-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000839 emulsion Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 238000004945 emulsification Methods 0.000 title abstract description 13
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 9
- 230000003750 conditioning effect Effects 0.000 claims abstract description 8
- 230000002528 anti-freeze Effects 0.000 claims abstract description 5
- 239000008346 aqueous phase Substances 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 21
- 239000012071 phase Substances 0.000 claims description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000013256 coordination polymer Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 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 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- -1 polyoxyethylene groups Polymers 0.000 claims description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 2
- 239000003899 bactericide agent Substances 0.000 claims description 2
- 210000000481 breast Anatomy 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims 2
- NHFDKKSSQWCEES-UHFFFAOYSA-N dihydrogen phosphate;tris(2-hydroxyethyl)azanium Chemical compound OP(O)(O)=O.OCCN(CCO)CCO NHFDKKSSQWCEES-UHFFFAOYSA-N 0.000 claims 2
- 238000009792 diffusion process Methods 0.000 claims 1
- 229940031098 ethanolamine Drugs 0.000 claims 1
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- 235000010489 acacia gum Nutrition 0.000 description 3
- 239000001785 acacia senegal l. willd gum Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 229920001285 xanthan gum Polymers 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 description 2
- QYYMDNHUJFIDDQ-UHFFFAOYSA-N 5-chloro-2-methyl-1,2-thiazol-3-one;2-methyl-1,2-thiazol-3-one Chemical compound CN1SC=CC1=O.CN1SC(Cl)=CC1=O QYYMDNHUJFIDDQ-UHFFFAOYSA-N 0.000 description 2
- 229940100484 5-chloro-2-methyl-4-isothiazolin-3-one Drugs 0.000 description 2
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 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 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000150195 Cyperus longus Species 0.000 description 1
- 235000018109 Cyperus longus Nutrition 0.000 description 1
- 244000058871 Echinochloa crus-galli Species 0.000 description 1
- 241000759199 Eleocharis acicularis Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 240000000178 Monochoria vaginalis Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000032823 cell division Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Colloid Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a kind of pretilachlor aqueous emulsion and preparation method thereof.Described pretilachlor aqueous emulsion includes：Pretilachlor 20% ~ 60%, emulsifying agent 1% ~ 5%, structure thixotropic agent 0.1% ~ 0.5%, PH conditioning agents 0.1% ~ 1%, antifreeze 1% ~ 5%, water 30% ~ 70%.Invention also improves current aqueous emulsion product processing technology, the energy consumption in process can be greatly reduced.
Description
Technical field
The present invention relates to formulations of pesticide manufacture field, and in particular to the improvement of a kind of pesticide emulsion in water and its processing technology.
Background technology
Pretilachlor（Pretilachlor）, CAS 51218-45-2, the chloro- N- of chemical name 2-（1- methyl -2- methoxies
Ethyl）-N-（2-ethyl-6- aminomethyl phenyls）Acetamide.Physicochemical property：Sterling is colourless liquid, b.p.135 DEG C/0.1Pa, phase
To density 1.076（20℃.）, vapour pressure 0.133 × 10- 3Pa.It is soluble in most of organic solvents, 20 DEG C of volumes in water
Solubility is 50mg/L, distribution coefficient（N-octyl alcohol/water）12020. normal temperature storages 2 years are stable.Hydrolysising half-life is at 20 DEG C
20 ~ 50d. of half-life period in 200d (pH=1 ~ 9), 14d (Ph=13), soil
Pretilachlor is selective preemergence herbicide, cell division inhibitor.Weeds are absorbed by middle hypocotyl and plumule
Medicament, interferencing protein synthesis, also has indirect influence to the photosynthesis and respiration of weeds.Typically by soil treatment,
The weeds such as rice terrace barnyard grass, Monochoria vaginalis, difformed galingale herb, needle spikesedge herb are prevented and kill off, it is poor to perennial weeds preventive effect.
Progressively adjustment with the requirement of national environmental protection laws and regulations more and more sternly with industrial policy, in the market third
Careless amine product is just from traditional missible oil formulation to aqueous emulsion agent transition, in current general aqueous emulsion processing technology
In, conventional method is that emulsifying agent etc. is added into oil phase, and the composition such as thickener, stabilizer, antifreezing agent adds aqueous phase, then cut in height
Under conditions of cutting, aqueous phase material is slowly added into oil phase, by the continuously input of mechanical energy, lasting high speed is cut
Cut, aqueous phase system is disperseed in oil-based system, emulsification makes system first complete water-in-oil system, with continuing for aqueous phase system
Increase, the viscosity of system continues to increase, after critical size is reached, system is transformed into oil-in-water system by water-in-oil system, most
The configuration process of aqueous emulsion product is completed eventually.But in current processing technology, whole processing process is required for lasting
High speed shear, although product forms are environmentally friendly, machining process still huge energy consumption, and in machining process, greatly
Partial mechanical energy is not stayed in system finally, but is lost in the way of heat energy in environment.Cause the energy unnecessary
Waste.
The content of the invention
Therefore, the present invention, which provides one kind, need not use high-speed shearing equipment, it is only necessary to be stirred using normal conventional
Complete the preparation method of processing.
The technical scheme is that, a kind of pretilachlor aqueous emulsion, describing pretilachlor aqueous emulsion includes：Pretilachlor 20% ~
60%, emulsifying agent 1% ~ 5%, structure thixotropic agent 0.1% ~ 0.5%, PH conditioning agents 0.1% ~ 1%, antifreeze 1% ~ 5%, water 30% ~ 70%.
Further, according to actual needs, minimal amount of bactericide may be also included in this aqueous emulsion product.
According to pretilachlor aqueous emulsion of the present invention, the emulsifying agent described is modified rosin base polyoxyethylene ether phosphorus
Acid esters triethanolamine salt and castor oil polyoxyethylene ether phosphate mixture.
According to pretilachlor aqueous emulsion of the present invention, the structure thixotropic agent is the cross linked polyacrylate of different polymerization degree
Resin.
According to pretilachlor aqueous emulsion of the present invention, described PH conditioning agents are triethanolamine.
According to pretilachlor aqueous emulsion of the present invention, described antifreeze is glycerine.
Present invention also offers a kind of improvement processing technology of pretilachlor aqueous emulsion, the technique is carried out as follows：
1）The emulsifying agent of 1 ~ 5 part of addition in 20 ~ 60 parts of pretilachlor active compound, forms oil phase；
2）In 30 ~ 70 parts of water, 0.1 ~ 0.5 part of structure thixotropic agent, slightly dispersed with stirring are added, aqueous phase is formed；
3）In the case of stirring at low speed or without stirring, oil phase is added in aqueous phase, oil phase automatic quick expansion in aqueous phase
Emulsification is dissipated, emulsion is formed；
4）After oil phase spreads completely in aqueous phase, PH conditioning agent triethanolamines are added, stirring at low speed is quiet after 3 ~ 5 minutes
Put more than 30 minutes, the viscosity of system rises to 200 ~ 500 mPa.s automatically, forms stable emulsion dispersion system.
It is an advantage of the current invention that compared to existing general aqueous emulsion processing formula, it is necessary to add oil phase using aqueous phase
Method, be required for carrying out high speed shear to system using powerful mechanized clipping equipment in whole process making body
System is scattered, emulsification, and the emulsion dispersion for making oil phase uniform particle in system by the technique of phase inversion is formed and stablized relatively into water
System.For existing common processes, a 5000M3Aqueous emulsion process equipment, at least need configuration one 25 ~ 30 kilowatts
When high-speed shearing machine, and all must be turned on during the entire process of Product processing, the mechanical energy one that shearing equipment is produced
Point by the energy required for itself phase inversion of system absorption system, and the overwhelming majority all becomes invalid heat energy and lost, right
The small active compound of some thermal capacity or thermally sensitive active compound must also install the heat sinks such as freezing additional on cutting kettle, virtually
More increase the consume of the energy.And in present inventor, by the rational allocation of emulsifier proportion, you can make pretilachlor in water
Disperse automatically without external energy input, and form stable emulsion, a 5000M3Aqueous emulsion process equipment, only
The normal agitation of one 5 ~ 7.5 kilowatt hour of configuration is needed, is stirred 5 ~ 10 minutes in the last regulation acid-base value of product.
It is another advantage of the present invention that compared to existing general aqueous emulsion processing formula.Because the original of pretilachlor
Medicine proportion is 1.076, and proportion is more great than the ratio of water, and the pretilachlor missible oil particle disperseed in system under gravity can be slow
Sedimentation, causes concentration difference above and below system generation, and precipitation gathers integral particle and equally can also change the internal stress of system
Structure, causes system to be demulsified in placement process and product is become unqualified, and in order to solve because caused by density difference
The problem of flocculation is assembled or suspended in particle precipitation, xanthans, Arabic gum or carboxymethyl cellulose etc. are added generally in aqueous phase
Aqueous colloidal makes the viscosity of aqueous phase become big, and resistance when making the particle move in aqueous phase becomes greatly, so that during the sedimentation of particle
Between it is elongated, reach extension shelf life of products purpose.But the aqueous colloidals such as xanthans, Arabic gum or carboxymethyl cellulose exist
The viscosity of aqueous phase is set to become big, metering is inaccurate product pellet sedimentation also brings along product packaging while slack-off when, is packed when using
The drawbacks of residual becomes big is toppled in container.Xanthans, Arabic gum or carboxymethyl cellulose isocolloid are microorganism secretion simultaneously
Material or natural glucide, it can be decomposed in aqueous phase by microorganisms such as bacteriums as sugar source, cause product putting
Viscosity is tapered into during putting, and rise gas, and a certain amount of anti-corrosion must also be added in the problems such as product packaging is deformed, therefore system
Agent.The structure thixotropic agent that the present invention is used is the CP of different polymerization degree, and the product is fully synthetic macromolecule
Product, small with addition, thickening efficiency is high, and thixotroping flow is short, do not have unnecessary carbon source on molecular structure, will not be by microorganism
Many advantages, such as corrosion.When the characteristics of maximum of this thickener is that PH is adjusted to 6 ~ 7 by product in aqueous phase, system becomes at once
Into clear, colorless jelly, do not change the color of system script, and the thixotroping flow of system is very short, and system is viscous when static
Degree is up to 300 ~ 500mPa.s, but as long as a slight agitation, the viscosity of system can drop to 20 ~ below 30mPa.s at once.It is static
300 ~ 500 mPa.s can be returned to again in 50 ~ 10 minutes afterwards, infinitely can be repeated without losing its viscosity.Both production can be solved
The problem of product are precipitated or flocculated in placement process, can also solve product and topple over the problem of residual is big in application.
Embodiment
Embodiment 1
| Pretilachlor active compound（96%） | 31.5% |
| APRO-5020 | 1.2% |
| PRZ-59 | 2.4% |
| CARBPOL 934 | 0.2% |
| CARBPOL 941 | 0.1% |
| Triethanolamine | 0.3% |
| Glycerine | 5.0% |
| Deionized water | Supply 100% |
1.2 grams of emulsifying agent APRO-5020 and 2.4 grams of emulsifying agent PRZ-59 are added in 31.5 grams of pretilachlor active compounds, formed
Oil phase.0.2 gram of CARBPOL 934 and 0.1 gram of CARBPOL 941 and 5 grams of glycerine are added in 59.3 grams of deionized waters, used
Glass bar is stirred, and soaks it, forms aqueous phase.Oil phase is slowly added in aqueous phase, its thermoplastic polymer is treated, emulsification forms uniform breast
Shape liquid.PH conditioning agent triethanolamines are added, with glass bar mild agitation one minute, 3 ~ 5 minutes is stood, treats that system viscosity rises to
300mpa.s or so, that is, complete configuration.
Embodiment 2
| Pretilachlor active compound（96%） | 52.5% |
| APRO-5020 | 2.2% |
| PRZ-59 | 2.8% |
| CARBPOL 934 | 0.1% |
| CARBPOL 978 | 0.1% |
| Preservative Kathon CG(Methylchloroisothiazolinone/Methylisothiazolinone combination) | 0.1% |
| Triethanolamine | 0.2% |
| Glycerine | 5.0% |
| Deionized water | Supply 100% |
2.2 grams of emulsifying agent APRO-5020 and 2.8 grams of emulsifying agent PRZ-59 are added in 52.5 grams of pretilachlor active compounds, shape
Into oil phase.By 0.1 gram of CARBPOL 934 and 0.1 gram of CARBPOL 978 and 0.1 gram of Preservative Kathon CG(Methylchloroisothiazolinone/Methylisothiazolinone combination) and 5 grams of antifreezing agents the third three
Alcohol is added in 37 grams of deionized waters, is stirred with glass bar, is soaked it, forms aqueous phase.Oil phase is slowly added in aqueous phase, it is treated
Thermoplastic polymer, emulsification forms uniform emulsion.PH conditioning agent triethanolamines are added, with glass bar mild agitation one minute, 3 are stood
~ 5 minutes, treat that system viscosity rises to 500mpa.s or so, that is, complete configuration.
The normal temperature performance indications of two above example：
| Example | Apparent condition | Content | PH | Foam volume | Grain D90 | Topple over residual |
| Index request | It is light yellow to milky | 5~8 | ≤25ml | ≤3.0um | ≤5.0% | |
| 30%EW | Milky thick liquid | 30.1 | 6.5 | 18 milliliters | 0.98 | 1.2% |
| 50%EW | Milky thick liquid | 50.2 | 6.3 | 25 milliliters | 1.03 | 1.8% |
± ± 2 DEG C, 14 days of the thermodynamic stability index 54 of two above example：
| Example | Apparent condition | Content | PH | Foam volume | Grain D90 | Topple over residual |
| Index request | It is light yellow to milky | Degraded≤5.0% | 5~8 | ≤25ml | ≤3.0um | ≤5.0% |
| 30%EW | Milky thick liquid | 29.8 | 6.8 | 15 milliliters | 1.10 | 1.4% |
| 50%EW | Milky thick liquid | 49.7 | 6.4 | 23 milliliters | 1.13 | 2.0% |
Pretilachlor aqueous emulsion after heat storage 14 days, is analyzed into all technical, its indices under conditions of 54 ± 2 DEG C
Still in claimed range, it is seen that aqueous emulsion is stable under reservoir condition.
0 ± 1 DEG C, 7 days of the cold storage stability indicator of two above example：
| Example | Apparent condition | Content | PH | Foam volume | Grain D90 | Topple over residual |
| Index request | It is light yellow to milky | Degraded≤5.0% | 5~8 | ≤25ml | ≤3.0um | ≤5.0% |
| 30%EW | Milky thick liquid | 30.0 | 6.5 | 19 milliliters | 0.99 | 1.5% |
| 50%EW | Milky thick liquid | 50.2 | 6.4 | 23 milliliters | 1.07 | 2.1% |
After pretilachlor aqueous emulsion is refrigerated 7 days under conditions of 0 ± 1 DEG C, all technical is analyzed, its indices is still
In claimed range, it is seen that aqueous emulsion is also stable under refrigerated conditions.
Claims (5)
1. a kind of pretilachlor aqueous emulsion, it is characterised in that in mass ratio：Including pretilachlor 20% ~ 60%, emulsifying agent 1% ~ 5%, structure
Thixotropic agent 0.1% ~ 0.5%, PH conditioning agents 0.1% ~ 1%, antifreeze 1% ~ 5%, water complements to 100%；
The emulsifying agent described is modified rosin base polyoxyethylene groups ether phosphate triethanolamine salt and castor oil polyoxyethylene ether
Phosphate mixture；
The structure thixotropic agent is the CP of different polymerization degree.
2. a kind of pretilachlor aqueous emulsion according to claim 1, it is characterised in that also including a small amount of bactericide.
3. a kind of pretilachlor aqueous emulsion according to claim 1, it is characterised in that described PH conditioning agents are three ethanol
Amine.
4. a kind of pretilachlor aqueous emulsion according to claim 1, it is characterised in that described antifreeze is glycerine.
5. the preparation method of pretilachlor aqueous emulsion, it is characterised in that carry out according to the following steps：
1）The emulsifying agent of 1 ~ 5 part of addition in 20 ~ 60 parts of pretilachlor active compound, forms oil phase；
2）In 30 ~ 70 parts of water, 0.1 ~ 0.5 part of structure thixotropic agent, slightly dispersed with stirring are added, aqueous phase is formed；
3）In the case of stirring at low speed or without stirring, oil phase is added in aqueous phase, oil phase automatic quick diffusion breast in aqueous phase
Change, form emulsion；
4）After oil phase spreads completely in aqueous phase, add pH adjusting agent triethanolamine and pH is adjusted to 6 ~ 7, stirring at low speed 3 ~ 5
After minute, more than 30 minutes are stood, the viscosity of system rises to 200 ~ 500 mPa.s automatically, forms stable Emulsified Dispersion
System；
The emulsifying agent described is modified rosin base polyoxyethylene groups ether phosphate triethanolamine salt and castor oil polyoxyethylene ether
Phosphate mixture；
The structure thixotropic agent is the CP of different polymerization degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510570132.2A CN105145567B (en) | 2015-09-10 | 2015-09-10 | pretilachlor aqueous emulsion and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510570132.2A CN105145567B (en) | 2015-09-10 | 2015-09-10 | pretilachlor aqueous emulsion and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105145567A CN105145567A (en) | 2015-12-16 |
| CN105145567B true CN105145567B (en) | 2017-10-17 |
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| CN119630284A (en) * | 2022-08-03 | 2025-03-14 | 先正达农作物保护股份公司 | Compositions comprising pretilachlor and clofopyralid having reduced viscosity |
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| CN102187864A (en) * | 2010-11-19 | 2011-09-21 | 南通联农农药制剂研究开发有限公司 | Pretilachlor aqueous emulsion and preparation method thereof |
| EP1423001B1 (en) * | 2001-09-07 | 2011-11-09 | Syngenta Participations AG | Surfactant systems for agriculturally active compounds |
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| EP1423001B1 (en) * | 2001-09-07 | 2011-11-09 | Syngenta Participations AG | Surfactant systems for agriculturally active compounds |
| CN101530093A (en) * | 2008-03-14 | 2009-09-16 | 北京绿色农华植保科技有限责任公司 | Pretilachlor-containing aqueous emulsion |
| CN102187864A (en) * | 2010-11-19 | 2011-09-21 | 南通联农农药制剂研究开发有限公司 | Pretilachlor aqueous emulsion and preparation method thereof |
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