CN1411718A - Mefenacet. bensulfuron-methyl dry suspension and its preparation method - Google Patents
Mefenacet. bensulfuron-methyl dry suspension and its preparation method Download PDFInfo
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- CN1411718A CN1411718A CN 02108849 CN02108849A CN1411718A CN 1411718 A CN1411718 A CN 1411718A CN 02108849 CN02108849 CN 02108849 CN 02108849 A CN02108849 A CN 02108849A CN 1411718 A CN1411718 A CN 1411718A
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- bensulfuron
- mefenacet
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Abstract
The present invention discloses a weedicide for paddy field, in particular, it is a mefenact.bensulfuron-methyl dried suspension and its preparatino method. Its raw material composition includes mefenacet, bensulfuron-methyl, water, dispersing agent, moistening agent, penetrating agent, thickening agent and adjuvant, and its preparation method includes the steps of preparing raw material slurry, wet supper-micropulverizing, spray-drying and granulating, screenking, separation and packaging to obtain the invented product whose molecualr diameter is less than 5 micrometers and its suspension rate is greater than 90%. Said invention also provides its application method.
Description
Technical field: the invention discloses a kind of herbicide for paddy field and manufacture method thereof, specifically mefenacet bensulfuron-methyl dry suspending agent and manufacture method thereof.
Background technology: at present, weed killer herbicide mefenacet of using always in the paddy field and bensulfuron-methyl are mixed and are wetting powder, its active component is made up of mefenacet and bensulfuron-methyl, mefenacet and bensulfuron-methyl content difference are bigger, total content does not wait from 18%～68%, and the registration of medicine inspecting institute of the Ministry of Agriculture has kind more than 60.Manufacture method mainly adopts V-Mixer slightly to mix, and airslide disintegrating mill is pulverized, and the granularity after the pulverizing is 44 μ m, is mixing packing with Agravicmixer is smart.Its shortcoming is: particle is thick, and suspensibility is low, and rate of dispersion is slow in water, and drug effect is low, and dust easily flies upward, and is big for environment pollution in use and the production process.
Summary of the invention: the purpose of this invention is to provide a kind of safety is good, drug effect is high, activity is big mefenacet bensulfuron-methyl dry suspending agent and manufacture method thereof.
The object of the present invention is achieved like this, and the formulation of mefenacet bensulfuron-methyl herbicide for paddy field of the present invention is a dry suspending agent, and its raw material is formed and proportioning is (ratio of weight and number):
The former medicine of mefenacet: 10～90
The former medicine of bensulfuron-methyl: 1～85
Water: 200～670
Dispersant: 2～60
Wetting agent: 0.1～10
Bleeding agent: 0.1～10
Thickener: 0.01～8
Auxiliary agent: 1～40
The processing step of making mefenacet bensulfuron-methyl dry suspending agent of the present invention comprises: proportion liquid, wet type ultramicro grinding, spray drying granulation, screening and separating, packing.
Described proportion liquid process is to add the former medicine of mefenacet, the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent, thickener and auxiliary agent by proportioning to stir in tank diameter.
Described wet type ultramicro grinding process is that feed liquid is carried out phase I pulverizing-coarse crushing in the sand milling pot, second stage pulverizing-micro mist is broken in sand mill, the bead diameter is 1～6mm in the sand milling pot, the feed liquid solid content is 15%～50%, the sand milling pot temperature is 30～60 ℃, the chuck cooling water temperature is 20 ℃～40 ℃, pulverizing time 6～15h, and micro-granularity is 5～10 μ m after the coarse crushing.The glass marble diameter is 1～4.0mm in the sand mill, and pulverizing the micro-granularity in back is 2～5 μ m, and accepted stock is squeezed in the head tank through pump and stored.
Described spray drying granulation process is feed liquid enters press spray drier top center after the high-pressure pump pressurization a pressure nozzle, nozzle bore 0.3～5.0mm, the hot blast import humidity that heater is blown into is 120 ℃～170 ℃, atomizing pressure 1.0-3.0Mpa, 50～85 ℃ of temperature of outgoing airs.
The present invention has the following advantages:
1, mefenacet bensulfuron-methyl dry suspending agent is to develop a kind of new and effective herbicide for paddy field of coming out on mefenacet bensulfuron-methyl wetting powder basis, and its active constituent is made up of mefenacet and bensulfuron-methyl.Mefenacet bensulfuron-methyl dry suspending agent is with proportionings such as 11% to 95% effective ingredients, on technology, adopt repeatedly sanded treatment, make the unimolecule diameter all less than 5 microns, suspensibility is greater than 90%, rate of dispersion improves more than 80% than former wetting powder in water, and drug effect improves more than 20% than former wetting powder.This dry suspending agent can the pesticide-clay mixture method or spray-on process be used for transplanted rice field (north), rice seedling throwing field (south), prevent and treat annual and part perennial weed, it have low toxicity, efficient, consumption is few, cost is low, broad weed-killing spectrum, environmentally safe, characteristics such as easy to use.
2, (1), the dispersant that is adopted in the raw material components of the present invention: remain in the wet type ultramicro grinding process and prevent particle coacervation, improve the heat resistance of mist projection granulating process Chinese medicine, also help the formation of particle.(2), wetting agent: reduce the surface tension of feed liquid, shorten the preparation time of soup.Bleeding agent: make microgranular dry suspending agent product have good penetration and plate-out ability.(3), thickener: the stability that improves preparating liquid.
3, dry suspending agent does not have in application or little dust from flying, has improved in using the safety of people or plant, can be made into highly effective pesticide, helps packing, storage and transportation; By ultramicro grinding, the elementary particle of medicine is very thin, has improved the activity of medicine greatly, can reduce the amount of application of medicine; The microgranular product of hollow shape has good dispersiveness in water, in water, disperses rapidly, and the suspensibility height, soup is even, can give full play to drug effect; The dry suspending agent commercially available medicine has good mobility, is easy to metering during preparating liquid, is suitable for automation mechanized operation; This formulation physicochemical property is stable.
4, this novel form weed killer herbicide is very promising formulation, and particularly in the today of vigorously advocating environment friendly agricultural, environment-protection pesticide, developing this formulation must bring considerable economic and social benefit for enterprise.
Description of drawings:
Fig. 1 is a mefenacet bensulfuron-methyl dry suspending agent manufacturing process flow diagram.
Concrete true mode:
Embodiment 1
The manufacture method of this dry suspending agent agricultural chemicals is divided three step process.
The first step: proportion liquid.Add the former medicine of mefenacet in tank diameter, the former medicine of bensulfuron-methyl, water dispersant, wetting agent, bleeding agent, thickener and auxiliary agent also stir.
Parts by weight are:
90% mefenacet: 10
The phonetic sulphur of 90% benzyl falls: 1
Water: 200
Dispersant is a sodium lignin sulfonate: 55
Wetting agent is a Nekal BX: 7
Bleeding agent is polyoxyethylene nonylphenol ether 15:8
Thickener is a carboxycellulose: 6
On the high mountain range of auxiliary agent: 4
Second step: wet type ultramicro grinding.Coarse crushing in the sand milling pot, micro mist is broken in sand mill.Bead is 3.5mm in the sand milling pot, and the feed liquid solid content is 50%, and the sand milling pot temperature is 55 ℃, the chuck cooling water temperature: 30 ℃, pulverize time 13H, and micro-granularity is 5-7 μ m after the coarse crushing.The bead diameter is 2mm in the sand mill, and the micro-granularity in the broken back of micro mist is 4-5 μ m, and slurry is squeezed in the head tank by pump and stored.
Carrying out the phase I with the sand milling pot pulverizes, the sand milling pot stirs bead by paddle, strong bump and friction shear action between the bead, make thick medicine particle during being clipped in be subjected to external mechanical force and pulverized, the particle after pulverizing simultaneously is protected by the anion protective layer that the surface forms; But because the limitation of sand milling Cooker structure, shredding stage efficient is higher in the early stage, and behind efficiency sharply descends when particle is reduced to a certain degree, and the advantage of sand mill is in the broken stage of micro mist just, so the second stage of pulverizing is finished by sand mill.
Sodium lignin sulfonate is an anionic dispersing agent, when former medicine in liquid phase water, be subjected to mechanical force effect and after being pulverized, the granularity of pulverizing is more little, and specific surface area is big more, and interparticle surface area is just high more, interparticle attraction is big more, and just Ning Ju phenomenon is just serious.After adding anionic dispersing agent,, form the dispersant molecule layer of uniform sequential arrangement naturally at pulverized particle surface because this dispersant is a polar structure.Former medicine particle is pointed in the hydrophobic end of dispersant, and the water-wet side directed outward is with identical repulsion electrically and mutually thereby make between the particle after pulverizing, effectively avoided the cohesion again of minuteness particle, has also accelerated crushing process.Be inserts on the high mountain range, make the concentration of agricultural chemicals reach balanced.
The 3rd step: spray drying granulation.Slurry enters the pressure nozzle of press spray drier top center after the high-pressure pump pressurization, the hot blast inlet temperature that nozzle bore 2mm, heater are blown into is 170 ℃, atomizing pressure 2.5Mpa, 70 ℃ of temperature of outgoing airs.Slurry rotates the back and forms the mist awl from the jet hole ejection in nozzle, the mist awl is made up of liquid film, and liquid film is subjected to the friction of air to split into silk, and brin is shaken disconnected row and is cleaved into droplet, and droplet is subjected to capillary effect to be shrunk to spherical droplet.The back droplet surface moisture that is heated evaporates rapidly, at first externally form duricrust, the interior external migration of internal moisture this moment is obstructed and vaporization rapidly, pressure for vaporization increases gradually, after inner vapour pressure is greater than the resistance of duricrust, impact from vulnerable area, just formed the particulate dry suspension pesticide of hollow, discharged finished product conveying and packaging wire wrapping in drier bottom and separator.
Through the dry suspending agent agricultural chemicals that said method makes, its material component is: the former medicine of 90% mefenacet, 90% the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent thickener.
Their parts by weight are:
90% mefenacet: 10
The phonetic sulphur of 90% benzyl falls: 1
Water: 200
Dispersant is a sodium lignin sulfonate: 60
Wetting agent is a Nekal BX: 8
Bleeding agent is polyoxyethylene nonylphenol ether 15:10
Thickener is a carboxycellulose: 7
On the high mountain range of auxiliary agent: 1
Embodiment 2
The first step: proportion liquid.The former medicine of mefenacet of adding 98%, 97% the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent and thickener and auxiliary agent stir in tank diameter.Their parts by weight are:
90% mefenacet: 90
97% bensulfuron-methyl: 1
Water: 500
Dispersant is a sodium lignin sulfonate: 2
Wetting agent is for drawing back powder: 0.2
Bleeding agent is an emulsifier: 1
Thickener is a cellulose: 0.01
The white carbon black of auxiliary agent: 5
Second step: wet type ultramicro grinding.Feed liquid coarse crushing in the sand milling pot, micro mist is broken in sand mill.Bead is 3mm in the sand milling pot, and the feed liquid solid content is 17%, and the sand milling pot temperature is 50 ℃, the chuck cooling water temperature: 30 ℃, pulverize time 10H, and micro-granularity is 5-8 μ m after the coarse crushing.Sand mill bead diameter 1.5mm, the broken micro-granularity 2-3 μ m in back of micro mist, slurry is squeezed in the head tank by pump and is stored.
The 3rd step: spray drying granulation.Slurry enters the pressure nozzle of press spray drier top center after the high-pressure pump pressurization, nozzle bore 2.0mm, the hot blast inlet temperature that heater is blown into is 155 ℃, atomizing pressure 1.5Mpa, 75 ℃ of temperature of outgoing airs, slurry has formed the dry suspending agent of hollow in drier, discharge packing in drier bottom and separator.
Through the dry suspending agent agricultural chemicals that said method makes, its material component is: the former medicine of 98% mefenacet, 98% the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent and thickener.Their parts by weight are:
98% mefenacet: 90
98% bensulfuron-methyl: 1
Water: 500
Dispersant is a sodium lignin sulfonate: 2
Wetting agent is for drawing back powder: 0.2
Bleeding agent is an emulsifier: 1
Thickener is a cellulose: 0.01
The white carbon black of auxiliary agent: 5
Embodiment 3
The first step: proportion liquid.The former medicine of mefenacet, the former medicine of 98% bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent and thickener and the auxiliary agent of adding 98% stir in tank diameter.Their parts by weight are:
98% mefenacet: 10
98% bensulfuron-methyl: 85
Water: 670
Dispersant is a sodium lignin sulfonate: 2
Wetting agent is for drawing back powder: 1
Bleeding agent is an emulsifier: 1
Thickener is a cellulose: 0.01
On the high mountain range of auxiliary agent: 1
Second step: wet type ultramicro grinding.Feed liquid coarse crushing in the sand milling pot, micro mist is broken in sand mill.Bead is 4mm in the sand milling pot, and the feed liquid solid content is 15%, 60 ℃ of sand milling pot temperatures, and the chuck cooling water temperature: 30 ℃, pulverize time 15H, micro-granularity is 8-10 μ m after the coarse crushing.Bead diameter 2.0mm in the sand mill, the micro-granularity in the broken back of micro mist is 3-5 μ m, slurry is squeezed in the head tank by pump and is stored.
The 3rd step: spray drying granulation.Slurry enters the pressure nozzle of press spray drier top center after the high-pressure pump pressurization, nozzle bore 2.2mm, the hot blast inlet temperature that heater is blown into is 120 ℃, atomizing pressure 2.0Mpa, 75 ℃ of temperature of outgoing airs, slurry has formed the dry suspending agent of hollow in drier, discharge packing in drier bottom and separator.
Through the dry suspending agent agricultural chemicals that said method makes, its material component is: the former medicine of 98% mefenacet, 98% the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent and thickener.Their parts by weight are:
98% mefenacet: 10
98% bensulfuron-methyl: 85
Water: 670
Dispersant is a sodium lignin sulfonate: 2
Wetting agent is for drawing back powder: 1
Bleeding agent is an emulsifier: 1
Thickener is a cellulose: 0.01
On the high mountain range of auxiliary agent: 1
Claims (5)
1, a kind of mefenacet bensulfuron-methyl dry suspending agent, it is characterized in that: the formulation of described mefenacet bensulfuron-methyl herbicide for paddy field is a dry suspending agent, its raw material is formed and proportioning is (ratio of weight and number):
The former medicine of mefenacet: 10～90
The former medicine of bensulfuron-methyl: 1～85
Water: 200～670
Dispersant: 2～60
Wetting agent: 0.1～10
Bleeding agent: 0.1～10
Thickener: 0.01～8
Auxiliary agent: 1～40
2, a kind of manufacture method of mefenacet bensulfuron-methyl dry suspending agent is characterized in that: the processing step of making mefenacet bensulfuron-methyl dry suspending agent of the present invention comprises: proportion liquid, wet type ultramicro grinding, spray drying granulation, screening and separating, packing.
3, according to the manufacture method of claim 1,2 described a kind of mefenacet bensulfuron-methyl dry suspending agents, it is characterized in that: described proportion liquid process is to add the former medicine of mefenacet, the former medicine of bensulfuron-methyl, water, dispersant, wetting agent, bleeding agent, thickener and auxiliary agent by proportioning to stir in tank diameter.
4, according to the manufacture method of claim 1,2 described a kind of mefenacet bensulfuron-methyl dry suspending agents, it is characterized in that: described wet type ultramicro grinding process is that feed liquid is carried out phase I pulverizing-coarse crushing in the sand milling pot, second stage pulverizing-micro mist is broken in sand mill, the bead diameter is 1～6mm in the sand milling pot, the feed liquid solid content is 15%～50%, the sand milling pot temperature is 30～80 ℃, the chuck cooling water temperature is 20 ℃～40 ℃, pulverizing time 6～15h, micro-granularity is 5～10 μ m after the coarse crushing.The glass marble diameter is 1～4.0mm in the sand mill, and pulverizing the micro-granularity in back is 2～5 μ m, and accepted stock is squeezed in the head tank through pump and stored.
5, according to the manufacture method of claim 1,2 described a kind of mefenacet bensulfuron-methyl dry suspending agents, it is characterized in that: described spray drying granulation process is feed liquid enters press spray drier top center after the high-pressure pump pressurization a pressure nozzle, nozzle bore 0.3～5.0mm, the hot blast import humidity that heater is blown into is 120 ℃～170 ℃, atomizing pressure 1.0-3.0Mpa, 50～85 ℃ of temperature of outgoing airs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02108849 CN1218633C (en) | 2001-10-12 | 2002-04-12 | Mefenacet. bensulfuron-methyl dry suspension and its preparation method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01128290 CN1346595A (en) | 2001-10-12 | 2001-10-12 | Polymerized superfine granular agricultural chemical and its preparing process |
| CN01128290.8 | 2001-10-12 | ||
| CN 02108849 CN1218633C (en) | 2001-10-12 | 2002-04-12 | Mefenacet. bensulfuron-methyl dry suspension and its preparation method |
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| Publication Number | Publication Date |
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| CN1411718A true CN1411718A (en) | 2003-04-23 |
| CN1218633C CN1218633C (en) | 2005-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02108849 Expired - Fee Related CN1218633C (en) | 2001-10-12 | 2002-04-12 | Mefenacet. bensulfuron-methyl dry suspension and its preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984815A (en) * | 2010-07-15 | 2011-03-16 | 江阴苏利科技有限公司 | Fluazinam dry suspending agent and preparation method thereof |
| CN102316725A (en) * | 2008-12-18 | 2012-01-11 | 巴斯夫欧洲公司 | Aqueous dispersion comprising pesticide particles and dissolved saccharide |
| CN103058782A (en) * | 2013-01-31 | 2013-04-24 | 广西乐土生物科技有限公司 | Herbicide vermifuge fertilizer with benzyl pyridine.mefenacet and production method thereof |
| CN112588200A (en) * | 2020-12-28 | 2021-04-02 | 镇江先锋植保科技有限公司 | Granulation method of low-density pesticide water dispersible granules |
| CN113243377A (en) * | 2021-03-24 | 2021-08-13 | 合肥巨卓农业科技合伙企业(有限合伙) | Mefenacet and bensulfuron methyl combined rice herbicide |
| CN115530160A (en) * | 2022-09-22 | 2022-12-30 | 祥霖美丰生物科技(淮安)有限公司 | Dry propanil suspending agent and preparation method thereof |
-
2002
- 2002-04-12 CN CN 02108849 patent/CN1218633C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316725A (en) * | 2008-12-18 | 2012-01-11 | 巴斯夫欧洲公司 | Aqueous dispersion comprising pesticide particles and dissolved saccharide |
| US8541012B2 (en) | 2008-12-18 | 2013-09-24 | Basf Se | Aqueous dispersion comprising pesticide particles and dissolved saccharide |
| CN102316725B (en) * | 2008-12-18 | 2014-08-13 | 巴斯夫欧洲公司 | Aqueous dispersion comprising pesticide particles and dissolved saccharide |
| CN101984815A (en) * | 2010-07-15 | 2011-03-16 | 江阴苏利科技有限公司 | Fluazinam dry suspending agent and preparation method thereof |
| CN101984815B (en) * | 2010-07-15 | 2013-03-27 | 江阴苏利化学股份有限公司 | Fluazinam dry suspending agent and preparation method thereof |
| CN103058782A (en) * | 2013-01-31 | 2013-04-24 | 广西乐土生物科技有限公司 | Herbicide vermifuge fertilizer with benzyl pyridine.mefenacet and production method thereof |
| CN103058782B (en) * | 2013-01-31 | 2015-10-28 | 广西乐土生物科技有限公司 | Containing herbicide pesticide medicine fertilizer and the production method thereof of benzyl phonetic benzene thiophene acyl |
| CN112588200A (en) * | 2020-12-28 | 2021-04-02 | 镇江先锋植保科技有限公司 | Granulation method of low-density pesticide water dispersible granules |
| CN113243377A (en) * | 2021-03-24 | 2021-08-13 | 合肥巨卓农业科技合伙企业(有限合伙) | Mefenacet and bensulfuron methyl combined rice herbicide |
| CN115530160A (en) * | 2022-09-22 | 2022-12-30 | 祥霖美丰生物科技(淮安)有限公司 | Dry propanil suspending agent and preparation method thereof |
| CN115530160B (en) * | 2022-09-22 | 2023-08-18 | 祥霖美丰生物科技(淮安)有限公司 | Propanil dry suspending agent and preparation method thereof |
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|---|---|
| CN1218633C (en) | 2005-09-14 |
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Owner name: JILIN RUIYE PESTICIDE LTD. Free format text: FORMER NAME OR ADDRESS: RUIZE PESTICIDE CO. LTD., GONGZHULING CITY |
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Address after: 136100 Gongzhuling national agricultural science and Technology Park in Jilin Province, Raj Industrial Park Patentee after: Jilin Ruifeng pesticide Co., Ltd. Address before: 136100 Gongzhuling City, Jilin province Ruize pesticides limited liability company Patentee before: Ruize Agricultural Chemicals Co., Ltd., Gongzhiling City |
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