CN102405902A - Pyriftalid water dispersible granule and preparation method thereof - Google Patents
Pyriftalid water dispersible granule and preparation method thereof Download PDFInfo
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- CN102405902A CN102405902A CN2011103468522A CN201110346852A CN102405902A CN 102405902 A CN102405902 A CN 102405902A CN 2011103468522 A CN2011103468522 A CN 2011103468522A CN 201110346852 A CN201110346852 A CN 201110346852A CN 102405902 A CN102405902 A CN 102405902A
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Abstract
The invention relates to a pyriftalid water dispersible granule and a preparation method thereof. The pyriftalid water dispersible granule is prepared from the following components in percentage by weight: 10-80% of pyriftalid, 1-8% of a wetting agent, 1-10% of a dispersing agent, 1-40% of a disintegrating agent, 0.3-5% of a defoamer, 0.5-4% of an adhesion agent, and the balance is a carrier; the preparation method comprises the following steps: uniformly mixing the raw materials except the adhesion agent; adding the mixture after ultrafine grinding to a water solution of the adhesion agent so as to carry out granulation; and finally, drying, screening, analyzing, testing, and putting in a storage. The pyriftalid water dispersible granule provided by the invention has the advantages of overcoming defects of a suspending agent and wettable powder, and having environmental friendliness and low use cost; and in processing and use processes, environmental pollution use cost of farmers are reduced.
Description
Technical field
The present invention relates to a kind of agricultural herbicide and preparation method thereof, a kind of specifically pyriftalid water dispersible granules and preparation method thereof.
Background technology
Pyriftalid is an early stage broad-spectrum herbicide behind the paddy rice seedling, aims to transplant and the direct seading rice exploitation.Its mechanism of action is suppress acetolactate synthestase (ALS) synthetic.Be used to prevent and treat paddy field grassy weed and part broad leaved weed, at paddy field, pyriftalid is absorbed by paddy rice root tip, and seldom a part can be transmitted on the blade, and the grass cutting blade that few part medicament can be sprouted absorbs.Through indoor active bio test and field control effectiveness test, the result shows has the better prevention effect to the annual gramineous weed in transplanting rice field, nutgrass flatsedge section part broad leaved weed.Better to the barnyard grass in transplanting rice field grass, moleplant seed control efficiency, broad leaved weed such as false loosestrife, cyperus iria, needle spikesedge herb, mexicana, Monochoria vaginalis and nutgrass flatsedge there are certain preventive effect.
The use of tradition agricultural chemicals mainly is missible oil and pulvis, and the level of the productive forces is not under the very high situation, at the insect pests crop smothering, to capture agricultural foison in the past, ensures that people's lives have played irreplaceable effect.Yet; Along with the raising of living standards of the people, to the also corresponding raising of the quality requirements of agricultural product, and international community is to the also corresponding raising of cry requirement of ecological environmental protection and implementation sustainable development; The application defects of missible oil and pulvis is obvious, and the formulations of pesticide begin to change to environment-friendly type.At present, pyriftalid in use is made generally in the suspending agent use.Though suspending agent is the environmental protection formulation, high to technological requirement aborning, the impossible at present preparation of realizing high-load, and also its production, packing and cost of transportation are also higher, thereby cause the increase of production and use cost.
Water dispersible granules is a kind of novel formulation, and domestic and international in recent years R&D institution, enterprise relatively pay close attention to the research of this formulation.Water dispersible granules is to add suitable auxiliary agent with natural world or synthetic filler, forms through the special process granulation.Water dispersible granules is easy to use, and to the mankind and Environmental security, is easy to sustained release and orientation, so water dispersible granules is a kind of optimal selection that substitutes traditional missible oil and pulvis.
Summary of the invention
The objective of the invention is in order to overcome the environmental pollution that exists in the existing formulations of pesticide, to be detrimental to health and shortcoming such as use cost height and a kind of environmental protection, the availability developed are high, and pyriftalid water dispersible granules easy to use.
Technical scheme of the present invention: a kind of pyriftalid water dispersible granules, each component is following by weight percentage: pyriftalid 10～80%, wetting agent 1～8%, dispersant 1～10%, disintegrant 1～40%, binding agent 0.5～4%, antifoaming agent 0.3～5%, surplus are carrier.
Described wetting agent is one or more the combination in Tea Saponin, lignosulfite, lauryl sodium sulfate, sulfosuccinic monooctyl ester sodium salt, dialkyl succinylsuccinate sulfonate, AEO, sodium alkyl benzene sulfonate, the alkylnaphthalene sulfonate.
Described dispersant is APES formaldehyde condensation products, sodium sulfate of polyethenoxy ether of fatty alcohol, lignosulfonates, polycarboxylate, naphthalenesulfonate formaldehyde condensation compound, to one or more the combination in the methoxyl group fatty acyl amido benzene sulfonic acid.
Described disintegrant is one or more the combination in sodium sulphate, calcium chloride, polyvinyl pyrrolidone, urea, sodium carboxymethyl starch, starch, sodium carbonate, ammonium sulfate, sodium chloride, the bentonite.
Described binding agent is one or more the combination in polyethylene glycol, carboxymethyl cellulose, polyvinyl alcohol, glucose, gelatin, soybean protein, sodium silicate, the gypsum.
Described antifoaming agent is organic matter silicone, C
8～10Fatty alcohol, C
10～20The combination of one or more in representative examples of saturated aliphatic hydroxy acid and lipid thereof, ester-ether type compound, the isooctanol.
Described carrier is one or more the combination in kaolin, diatomite, precipitated calcium carbonate, white carbon, attapulgite, corncob cellulose, sepiolite, calcite, silica, pyrophyllite, xylitol, montmorillonite, the potter's clay.
Its preparation methods steps is following.
A, choose raw material according to following each composition quality percentage: pyriftalid 10～80%, wetting agent 1～8%, dispersant 1～10%, disintegrant 1～40%, antifoaming agent 0.3～5%, binding agent 0.5～4%, surplus are carrier; Except that binding agent, other raw material mixes and obtains mixture.
B,, airslide disintegrating mill obtains female powder after carrying out ultramicro grinding with mixture.
C, the female powder that obtains after the ultramicro grinding is taken by weighing certain amount put into revolving fluid bed.
D, unlatching revolving fluid bed also slowly carry out granulation toward its aqueous solution that adds binding agent.
E, etc. granulation dry after accomplishing.
F, the shot-like particle of oven dry is sieved, promptly obtains the pyriftalid water dispersible granules after the analytical control.
The present invention has developed with mineral substance, plant class or has contained the earthfill rockfill concrete riprap RCC material as carrier, adds auxiliary agent etc., and making it granulating and forming is water dispersible granules.This water dispersible granules can rapid disintegration disperse to form suspension in water.Water dispersible granules stable performance of the present invention, packing, storage, transportation are all very convenient.
With the prior art contrast, advantage of the present invention and good effect are following.
1, neither need use organic solvent, not have dust drift again, can not burn, can not explode, can practice thrift petroleum resources and alleviate environmental pollution, produce and use in to operator and Environmental security.
2, the preparation of high-load be can be processed into as required, packing, storage, cost of transportation practiced thrift.
3, physics, chemical property are stablized, and are difficult for decomposing rotten.
4, finished product is a granular solids, and good fluidity is toppled over the back and mended sticking wall, can not remain in and form secondary pollution in the packing container.
5, available papery packing is convenient to reclaim and is destroyed or natural degradation.
6, it is superfine that the medicine grain disperses the back diameter, helps target and fully absorb and play a role, and can reduce effective ingredient consumption, improves effect.
7, among the present invention owing to added the auxiliary agent of heterogeneity, make the present invention have the active component content height, environmental pollution is little, disintegration rate is fast, dispersive property reaches heat storage steady performance well, weeding usefulness in use is high, safety is good.
Description of drawings
Fig. 1 is a preparation method's of the present invention process chart.
Embodiment
Essence is for a better understanding of the present invention explained technology contents of the present invention with embodiment below, but content of the present invention is not limited thereto.
Embodiment 1:80% pyriftalid water dispersible granules.
Take by weighing pyriftalid 80%, wetting agent lauryl sodium sulfate 4%, dispersant polycarboxylate 2,700 3%, sodium lignin sulfonate 4%, disintegrant sodium sulphate 5%, antifoaming agent isooctanol 0.4%, binding agent sucrose 0.5%, carrier kaolin are mended to 100%; Pyriftalid and all the other auxiliary agents except that binding agent are pressed formula rate to be mixed in Agravicmixer 20 minutes; Again its mixture is put into double worm mixer (I); Reach more than particle diameter 1000 orders through the airslide disintegrating mill pulverizing while mixing; Collect through cyclopneumatic separator and sack cleaner, in double worm mixer (II), mixed once more 30 minutes at last, obtain uniform female powder.Accurately take by weighing quantitative female powder again in revolving fluidized bed pelletizer, spray into adhesive solution by prescription, oven dry obtains irregular particle shape water dispersible granules at last, sieves then, makes uniform 80% pyriftalid water dispersible granules.Through the check active constituent content is 80.8%, moisture≤2.0%, and pH value 7.2, suspensibility>=90%, lasting foaming characteristic (1min)≤10mL, wetability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.
This embodiment is used to prevent and treat rice direct seeding field grassy weed and part broad leaved weed, and dosage is 187.5～300g (active ingredient)/hm
2, preventive effect is 81%～95%.
Embodiment 2:50% pyriftalid water dispersible granules.
Take by weighing pyriftalid 50%, wetting agent lauryl sodium sulfate 4%, dispersant naphthalenesulfonate formaldehyde condensation compound 3%, sodium lignin sulfonate 4%; Disintegrant urea 30%, binding agent sucrose 0.5%, antifoaming agent organic silicone 0.3%; Carrier diatomite is mended to 100%, pyriftalid and all the other auxiliary agents except that binding agent is pressed formula rate in Agravicmixer, mixed 20 minutes, again its mixture is put into double worm mixer (I); Reach more than particle diameter 1000 orders through the airslide disintegrating mill pulverizing while mixing; Collect through cyclopneumatic separator and sack cleaner, in double worm mixer (II), mixed once more 30 minutes at last, obtain uniform female powder.Accurately take by weighing quantitative female powder again in revolving fluidized bed pelletizer, spray into adhesive solution, dry at last, obtain the water dispersible granules of irregular particle shape, sieve then, make uniform 50% pyriftalid water dispersible granules by prescription.Through the check active constituent content is 50.1%, moisture≤2.0%, and pH value 7.2, suspensibility>=90%, lasting foaming characteristic (1min)≤10mL, wetability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.
This embodiment is used to prevent and treat rice direct seeding field grassy weed and part broad leaved weed, and dosage is 187.5～300g (active ingredient)/hm
2, preventive effect is 78%～93%.
Embodiment 3:20% pyriftalid water dispersible granules.
Take by weighing pyriftalid 20%, wetting agent sulfosuccinic monooctyl ester sodium salt 7%, dispersant sodium sulfate of polyethenoxy ether of fatty alcohol 5%, sodium lignin sulfonate 4%; Disintegrant urea 20%; Binding agent sucrose 0.5%, the fatty alcohol 0.8% of antifoaming agent C8～10, carrier attapulgite are mended to 100%; Pyriftalid and all the other auxiliary agents except that binding agent are pressed formula rate to be mixed in Agravicmixer 20 minutes; Again its mixture is put into double worm mixer (I), reach more than particle diameter 1000 orders through the airslide disintegrating mill pulverizing, collect through cyclopneumatic separator and sack cleaner while mixing; In double worm mixer (II), mixed once more 30 minutes at last, obtain uniform female powder.Accurately take by weighing quantitative female powder again in revolving fluidized bed pelletizer, spray into adhesive solution, dry at last, obtain the water dispersible granules of irregular particle shape, sieve then, make uniform 20% pyriftalid water dispersible granules by prescription.Through the check active constituent content is 20.8%, moisture≤2.0%, and pH value 7.4, suspensibility>=90%, lasting foaming characteristic (1min)≤10mL, wetability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.
This embodiment is used to prevent and treat transplanted rice field grassy weed and part broad leaved weed, and dosage is 187.5～300g (active ingredient)/hm
2, preventive effect is 77%～94%.
Embodiment 4:10% pyriftalid water dispersible granules.
Take by weighing pyriftalid 10%, wetting agent sulfosuccinic monooctyl ester sodium salt 6%, dispersant sodium sulfate of polyethenoxy ether of fatty alcohol 4%, sodium lignin sulfonate 4%; Disintegrant urea 40%, binding agent sucrose 0.5%, the fatty alcohol 0.8% of antifoaming agent C8～10; The carrier sepiolite is mended to 100%, pyriftalid and all the other auxiliary agents except that binding agent is pressed formula rate in Agravicmixer, mixed 20 minutes, again its mixture is put into double worm mixer (I); Reach more than particle diameter 1000 orders through the airslide disintegrating mill pulverizing while mixing; Collect through cyclopneumatic separator and sack cleaner, in double worm mixer (II), mixed once more 30 minutes at last, obtain uniform female powder.Accurately take by weighing quantitative female powder again in revolving fluidized bed pelletizer, spray into adhesive solution, dry at last, obtain the water dispersible granules of irregular particle shape, sieve then, make uniform 10% pyriftalid water dispersible granules by prescription.Through the check active constituent content is 10.1%, moisture≤2.0%, and pH value 7.3, suspensibility>=90%, lasting foaming characteristic (1min)≤10mL, wetability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.
This embodiment is used to prevent and treat transplanted rice field grassy weed and part broad leaved weed, and dosage is 187.5～300g (active ingredient)/hm
2, preventive effect is 77%～96%.
The pyriftalid water dispersible granules that adopts prescription of the present invention to process the results showed that this product has good dispersiveness, and active ingredient unrestrictedly suspends, and disintegration rate is fast, and disintegration time is less than 1min; Heat storage stability is good; And adhesion rate in use is high, the lasting period is long.The present invention's weeding usefulness in production application is high, through evidence, all can reach more than 80% to paddy rice grassy weed and part broad leaved weed control efficiency; Safety is good.
Claims (8)
1. a pyriftalid water dispersible granules is characterized in that, effective ingredient is a pyriftalid; Each component is following with percentage by weight: pyriftalid: 10～80%, and wetting agent: 1～8%, dispersant: 1～10%; Disintegrant: 1～40%; Binding agent: 0.5～4%, antifoaming agent: 0.3～5%, surplus is a carrier.
2. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described wetting agent is one or more the combination in Tea Saponin, lignosulfite, lauryl sodium sulfate, sulfosuccinic monooctyl ester sodium salt, dialkyl succinylsuccinate sulfonate, AEO, sodium alkyl benzene sulfonate, the alkylnaphthalene sulfonate.
3. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described dispersant is APES formaldehyde condensation products, sodium sulfate of polyethenoxy ether of fatty alcohol, lignosulfonates, polycarboxylate, naphthalenesulfonate formaldehyde condensation compound, to one or more the combination in the methoxyl group fatty acyl amido benzene sulfonic acid.
4. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described disintegrant is one or more the combination in sodium sulphate, calcium chloride, polyvinyl pyrrolidone, urea, sodium carboxymethyl starch, starch, sodium carbonate, ammonium sulfate, sodium chloride, the bentonite.
5. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described binding agent is one or more the combination in polyethylene glycol, carboxymethyl cellulose, polyvinyl alcohol, glucose, gelatin, soybean protein, sodium silicate, the gypsum.
6. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described antifoaming agent is organic matter silicone, C
8～10Fatty alcohol, C
10～20The combination of one or more in representative examples of saturated aliphatic hydroxy acid and lipid thereof, ester-ether type compound, the isooctanol.
7. a kind of pyriftalid water dispersible granules according to claim 1 is characterized in that: described carrier is one or more the combination in kaolin, diatomite, precipitated calcium carbonate, white carbon, attapulgite, corncob cellulose, sepiolite, calcite, silica, pyrophyllite, xylitol, montmorillonite, the potter's clay.
8. the preparation method of a pyriftalid water dispersible granules is characterized in that step is following:
A, choose raw material according to following each composition quality percentage: pyriftalid 10～80%, wetting agent 1～8%, dispersant 1～10%, disintegrant 1～40%, antifoaming agent 0.3～5%, binding agent 0.5～4%, surplus are carrier; Except that binding agent, other raw material mixes and obtains mixture;
B,, airslide disintegrating mill obtains female powder after carrying out ultramicro grinding with mixture;
C, the female powder that obtains after the ultramicro grinding is taken by weighing certain amount put into revolving fluid bed;
D, unlatching revolving fluid bed also slowly carry out granulation toward its aqueous solution that adds binding agent;
E, etc. granulation dry after accomplishing;
F, the shot-like particle of oven dry is sieved, promptly obtains the pyriftalid water dispersible granules after the analytical control.
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| CN2011103468522A CN102405902A (en) | 2011-11-07 | 2011-11-07 | Pyriftalid water dispersible granule and preparation method thereof |
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| CN2011103468522A CN102405902A (en) | 2011-11-07 | 2011-11-07 | Pyriftalid water dispersible granule and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102696589A (en) * | 2012-04-23 | 2012-10-03 | 广东中迅农科股份有限公司 | Flonicamid water dispersible granule and method for preparing same |
| CN102726379A (en) * | 2012-06-09 | 2012-10-17 | 广东中迅农科股份有限公司 | Pyraclostrobin water dispersible granule and preparation method thereof |
| CN102763648A (en) * | 2012-06-30 | 2012-11-07 | 广东中迅农科股份有限公司 | Trifloxystrobin water dispersible granule and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030887A1 (en) * | 2005-09-16 | 2007-03-22 | Nufarm Australia Limited | Herbicide composition |
| CN101375683A (en) * | 2008-10-09 | 2009-03-04 | 国家农药创制工程技术研究中心 | Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method |
| CN101427674A (en) * | 2007-11-08 | 2009-05-13 | 联合国南通农药剂型开发中心 | High-content water-dispersion granula and preparation method thereof |
| CN101999361A (en) * | 2010-12-27 | 2011-04-06 | 陕西韦尔奇作物保护有限公司 | Herbicide composition containing cyhalofop-butyl and pyrimidyloxy (sulfur) benzoate |
-
2011
- 2011-11-07 CN CN2011103468522A patent/CN102405902A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030887A1 (en) * | 2005-09-16 | 2007-03-22 | Nufarm Australia Limited | Herbicide composition |
| CN101427674A (en) * | 2007-11-08 | 2009-05-13 | 联合国南通农药剂型开发中心 | High-content water-dispersion granula and preparation method thereof |
| CN101375683A (en) * | 2008-10-09 | 2009-03-04 | 国家农药创制工程技术研究中心 | Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method |
| CN101999361A (en) * | 2010-12-27 | 2011-04-06 | 陕西韦尔奇作物保护有限公司 | Herbicide composition containing cyhalofop-butyl and pyrimidyloxy (sulfur) benzoate |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102696589A (en) * | 2012-04-23 | 2012-10-03 | 广东中迅农科股份有限公司 | Flonicamid water dispersible granule and method for preparing same |
| CN102696589B (en) * | 2012-04-23 | 2015-09-16 | 广东中迅农科股份有限公司 | A kind of flonicamid water dispersible granules and preparation method thereof |
| CN102726379A (en) * | 2012-06-09 | 2012-10-17 | 广东中迅农科股份有限公司 | Pyraclostrobin water dispersible granule and preparation method thereof |
| CN102726379B (en) * | 2012-06-09 | 2015-11-18 | 广东中迅农科股份有限公司 | Pyraclostrobin water dispersible granule and preparation method thereof |
| CN102763648A (en) * | 2012-06-30 | 2012-11-07 | 广东中迅农科股份有限公司 | Trifloxystrobin water dispersible granule and preparation method thereof |
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Application publication date: 20120411 |