CN102657153A - Paraquat paste agent and preparation method thereof - Google Patents
Paraquat paste agent and preparation method thereof Download PDFInfo
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- CN102657153A CN102657153A CN2011104524892A CN201110452489A CN102657153A CN 102657153 A CN102657153 A CN 102657153A CN 2011104524892 A CN2011104524892 A CN 2011104524892A CN 201110452489 A CN201110452489 A CN 201110452489A CN 102657153 A CN102657153 A CN 102657153A
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Abstract
The invention relates to a paraquat-containing paste agent and a preparation method thereof. The paraquat paste agent is prepared by thoroughly mixing an effective component of 10% to 50% by mass of paraquat dichloride and a proper quantity of water-soluble high polymers, a surfactant, an emetic, a filler, a moisturizing agent, a coloring agent and an olfactory warning agent. At present, the dosage form of paraquat is mainly water agent, being easily administered orally. According to the invention,the paste agent prepared from paraquat, which is not easily administered, can effectively reduce the risk of paraquat poisoning, and compared with other types of conventional preparations, the paraquat paste agent has a good environmental compatibility and an excellent weed control effect.
Description
Technical field
The present invention relates to a kind of pesticides new formulation production field, especially a kind of paraquat paste and preparation method thereof.
Background technology
Paraquat
Chemical name: 1,1 '-dimethyl-4,4 '-bipyridyliumion (1.1'-dimethyl-4,4' bipyridine cation, English common name: paraquat);
Molecular formula: C
12H
14N
2Cl
2
Structural formula:
Effect characteristics: paraquat onset in the chloroplast of green plants.Photosynthetical system in the chloroplast absorbs luminous energy and makes sugar, thereby nutrient is provided for plant.Paraquat can accurately get into the biochemical system that is known as photosynthetical system I.This system can produce free electron to promote photosynthesis.The formation " free radical " that reacts of paraquat ion and these electronics.Oxygen is converted into peroxide with these free radicals rapidly.These peroxide be easy to cell membrane in unsaturated fatty acid react.Through this a succession of chemical reaction, cell membrane is destroyed, and cellular content leaks and mixes, and causes bigger destruction.Whole process is very rapid, so the paraquat transfer that can not can observe.
Later 1950s; It is found that paraquat can control most annual weed and suppress perennial weed; Introduced to the market first in 1962 subsequently; Be used for multiple weeds (noxious plant) control of 100 various crop, be included in various cereal, oily kind, fruit and the vegetables of plantation under the various weather conditions.Because paraquat can effectively be controlled weeds and exempt ploughing a field and bury careless link, so it has simplified the production of crop, thereby has facilitated many innovations in sustainable farming field.This has saved the time of peasant household, also helps the maintenance of soil.Paraquat is that one of the widest weed killer herbicide is used in the whole world, is second largest weed killer herbicide on the weed killer herbicide market, the world.It obtains the usage license in more than 100 countries.Use this weed killer herbicide to reduce and cultivate operation, help to prevent soil erosion, keep soil moisture, help promoting " no tillage farming " or " live agricultural " that need not elapsed time and energy to carry out.
But; Along with the surge of agriculture and forestry to the paraquat demand, the incidence of disease of paraquat poisoning also obviously rises clinically, has become the 2nd big pesticide poisoning kind after organophosphorous pesticide at present; And possibly become the 1st agricultural chemicals that causes the peasant to poison very soon by the particularly high malicious organophosphorous pesticide forbidding of existing trend back paraquat; The main cause of paraquat poisoning is to poison oneself, and accounts for 99% of domestic literature report case load, secondly is occupation contact and accidental poisoning.The patient who accepts for medical treatment with Shandong hospital is an example: the paraquat poisoning amount of seeing and treating patients develops into 72 people in 2009 from 2003 2 people, will wherein poison oneself and account for 95.6% above 100 people in 2010, and occupational poisoning is 2.4%, and other are accidental poisoning.
In order to guarantee people's life security; Reduce the generation of intoxication accident; Countries in the world have been formulated limiting the use of and the forbidding policy to paraquat in succession: the U.S. is in February, 1978 issue regulation (43FR5782); All products that contain paraquat are belonged to restriction use a level agricultural chemicals, its user is carried out the operator that qualification certification promptly only has qualification could use paraquat; Europe because of relating to health problem; Sweden announces to ban use of paraquat in nineteen eighty-three; Austria, Denmark and Finland also successively announce the forbidding paraquat subsequently, and on July 11st, 2007, European Union's court decision was abolished the paraquat registration of passing through in 2003, and paraquat withdraws from European Union market since then; In country in Southeast Asia: Philippine, horse traction West Asia, Indonesia, forbid that paraquat is used for oily palmitic acid; On January 1st, 2008 rose, and Sri Lanka forbids selling the preparation of the various formulations of paraquat of 6.5% above concentration.
In China; Issue GB 19307-2003 of quarantine general bureau (the female medicine of paraquat) and GB19308-2003 (paraquat aqua) are tested in national quality supervision in 2003; Indexs such as the composition of paraquat product, content strict regulations have been made; Require female medicine of paraquat and preparation must add emetic triazole pyrimidone, wherein the mass ratio of paraquat cation and triazole pyrimidone should be controlled to be 400 ± 50: 1; The Institute for the Control of Agrochemicals of the Ministry of Agriculture,PRC sent No. (2004) 18, the agricultural chemicals inspection pharmaceutical control and administration file of (about strengthening the notice of paraquat and diquat registration management) in 2004; The one, requirement manufacturing enterprise must provide emetic source proof when the registration of application paraquat; The emetic that approval is used must file on record on the net, and that new emetic kind need provide is acute, per os test, emetic effect and to tests such as gastric stimulations; The 2nd, stop to accept and examining the newly-increased outlet registration and the separation registration of paraquat product, registration is extended in no longer handling of approved outlet registration and separation registration, no longer accepts and ratify the registration of paraquat mixture preparation in principle.
But; Owing to the site of action of paraquat accurately and rapidly herbicidal effect and rain fastness can and contact with soil lose activity keep the weeds root system, to the characteristic of crop safety; Make paraquat in the conservation tillage system, especially in the no-tillage technology, bring into play crucial and irreplaceable effect, in the use over nearly 50 years; Paraquat is accepted by peasant all over the world; Produce huge social and economic benefit, also reduced the phenomenon of the soil erosion simultaneously, become indispensable agriculture articles for use.
In order to reduce the intoxication accident that causes because of paraquat toxicity; Make paraquat continue to serve agricultural production; Deep research has been carried out to paraquat in countries in the world; To the people is to wrongly take the toxicity problem that causes to have proposed solution, and in patent application CN00813298.4 and CN99119405.5 and US5635445, having proposed through changing present general paraquat aqua is that the mode of paraquat solid or semisolid dosage form improves the paraquat safety, still; When producing this solid or semisolid dosage form, because dust pollution can cause damage and increases production cost industrial worker and user; In patent application CN95194386.3, proposed to generate the safety that the mode of gel improves paraquat, this mode can significantly reduce drug effect, does not meet the agricultural production needs; Propose in the paraquat aqua, to add the mode that alginates reduce the paraquat oral toxicity at profit application CN02807340.1; But it causes preparation viscosity too high in actual application; Can not topple over out fully; And be difficult to be dispersed in the sprayer, make the preparation balance, do not reach safe effect.
Summary of the invention
The object of the invention is exactly to prepare a kind of producing with safety, low-cost, the excellent paraquat novel formulation type of herbicidal effect; This formulation not only can effectively reduce because of contact or accidental and deliberately take in the intoxication accident that causes and take place, and conveniently use, cheap, effect is outstanding.
For realizing above-mentioned requirements; The inventor has carried out a large amount of formulation test and biological activity test; Find: when the paste of paraquat with formation after an amount of surfactant, high molecular weight water soluble polymer, emetic, filler, NMF, colouring agent, sense of smell caution agent mixes; Have excellent activity of weeding, and can significantly reduce because of contact, the accidental or intentional generation of taking in the intoxication accident that causes.
Find that based on these inventor has proposed a kind of paste of paraquat: the paste that contains paraquat is water-dispersion type or water miscible pasty masses; Described paraquat is 1～50% in its mass percentage content of paraquat dichloride.
Described paste contains: paraquat, surfactant, emetic, high molecular weight water soluble polymer, filler and more than one compositions arbitrarily in NMF, colouring agent, sense of smell caution agent.
Described paraquat is in its mass percentage content of paraquat dichloride preferred 5～30%.
Described paraquat is in its mass percentage content of paraquat dichloride preferred 5～30%.
Be a kind of wide spectrum, quick-acting, contact killing type, steriland herbicide wherein, belong to the pyridines weed killer herbicide, with paraquat cation (chemical name: 1.1'-dimethyl-4 as the paraquat of active component; The 4' bipyridine cation) and paraquat dichloride (chemical name: 1; 1 ＇-dimethyl-4,4 ＇-bipyridine cation two villaumites) form exists, can be rapidly by the green plant tissue absorption; Suppress photosynthesis, make it withered fast.
Surfactant is farming industry some surfactants commonly used that industry technical staff is known, but does not comprise sodium alklyarylsulfonate.Described surfactant be in sodium n-alkylbenzenesulfonate, APG, sodium sulfate of polyethenoxy ether of fatty alcohol, AESA, sldium lauryl sulfate, diglycollic amide stearic acid monoglyceride, lignosulfonates, heavy alkylbenzene sulfonate, alkylsulfonate, diffusant, alkyl, polyether, AEO and C12～C18 amine salt, C10～C18 quaternary ammonium salt or the heterocyclic surfactant any one or more than one; Its mass percentage content is 1～20%, preferred 5～15%.
Described high molecular weight water soluble polymer be polyethylene glycol, polyacrylic acid or salt and modifier, polyacrylamide, acrylic acid and methacrylate polymer, polyethylene glycol oxide, poly, poly salt, and modifier, diallyl QAS polymer, polyvinylpyrrolidone, poly-epoxy succinic acid, cellulose and modifier, starch conversion thing, xanthans, sodium alginate, gum Arabic, gelatin, guar gum, polyvinyl alcohol in one or more mixture; Its mass percentage content is 0.1～40%, preferred 1～20%.
Described filler is one or more a mixture in water, white carbon, kaolin, zeolite, cyclodextrin, soluble starch, urea, earth powder, glucose, the aluminium-magnesium silicate; Its mass percentage content is 1～20%.
Can use at least a following material that is selected from as NMF: glycerine, ethylene glycol, propane diols or sorbitol etc.
As colouring agent can for red, blue, blue or green, green or black in any or mix.
As sense of smell caution agent is in pyridine or the allicin any.
Be generally the triazole pyridone as emetic.
Described paraquat paste can make through following two kinds of preparation methods:
1. prepare low content paraquat paste, i.e. content≤35% o'clock is in system cream container; Add the paraquat mother liquor that measures, its dichloride content>=42% adds filler, water soluble polymer component then in batches; Carrying out homogeneous simultaneously stirs, grinds; Cooperate vacuum pumping simultaneously, material finishes the back and prolongs above operating procedure 50 minutes, and material is fully mediated;
Add surfactant, NMF and other helper component at last, fully mediate 30 minutes to paste body shape, take out a small amount of lotion detect qualified after; Squeeze into the ageing of lotion hold-up tank; Material is cooled off naturally, and assembly time 3 hours fully expands material and afterwards forms the homogeneous phase adherend;
2. prepare high-load paraquat paste, i.e. content>35% o'clock, with the paraquat mother liquor, its paraquat dichloride content >=42%, under the reduced pressure, high temperature is heated to the paraquat viscous fluid for 60～80 ℃, and content is 60%～85%;
To concentrate back paraquat viscous fluid is mother liquor, and 1. repeating step promptly gets.
Because the formulation of paraquat is main with aqua mainly at present; Be easy to oral; The present invention processes the paste that is difficult for taking with paraquat, can effectively reduce because of contact or accidental and deliberately take in the intoxication accident that causes and take place, and conveniently use, cheap, effect is outstanding.And with respect to other conventional formulation types, the paraquat paste has good environment compatibility and excellent weed control efficacy.
Embodiment
Hereinafter, will be explained in more detail the present invention through embodiment, but the present invention and receive the restriction of these embodiment never in any form, and the paraquat content described in the embodiment all is that the content with the paraquat dichloride calculates.
Embodiment 1:5% paraquat paste
Paraquat (dichloride content 42%): 5% (folding hundred backs add)
Sodium sulfate of polyethenoxy ether of fatty alcohol: 8%
AEO: 2%
Urea: 10%
Glucose: 5%
Aluminium-magnesium silicate: 1%
Xanthans: 2%
Macrogol 4000: 5%
Pyridine: 0.2%
Triazole pyridone: 0.009%
Water: mend to 100%
The preparation of embodiment 2:10% paraquat paste
Paraquat (dichloride content 42%): 10% (folding hundred backs add)
Diglycollic amide stearic acid monoglyceride: 1%
Sodium lignin sulfonate: 4%
Talcum powder: 17%
Soluble starch: 2%
Xanthans: 1%
Guar gum: 0.3%
Modified polyacrylic acid sodium: 3%
Pyridine: 0.2%
Triazole pyridone: 0.02%
Water: mend to 100%
The preparation of embodiment 3:15% paraquat paste
Paraquat (dichloride content 42%): 15% (folding hundred backs add)
C18 quaternary ammonium salt: 20%
Glycerine: 5%
Sorbitol: 1%
Urea: 10%
Xanthans: 0.5%
HPMA: 0.2%
White carbon: 3%
Glucose: 10%
Modified polyacrylic acid sodium: 8%
Pyridine: 0.2%
Triazole pyridone: 0.03%
Water: mend to 100%
The preparation of embodiment 4:15% paraquat paste
Paraquat (dichloride content 42%): 15% (folding hundred backs add)
AESA: 10%
Soluble starch: 15%
Poly: 5%
Modified polyacrylic acid sodium: 7%
Macrogol 4000: 2%
Ethylene glycol: 3%
Talcum powder: 11%
Pyridine: 0.2%
Triazole pyridone: 0.03%
Water: mend to 100%
The preparation of embodiment 5:20% paraquat paste
Paraquat (dichloride content 42%): 20% (folding hundred backs add)
AESA: 6%
Sldium lauryl sulfate: 5%
Propane diols: 5%
Gum Arabic: 2%
Zeolite: 4%
Cyclodextrin: 10%
Poly-epoxy succinic acid: 1%
Diallyl QAS polymer: 10%
Polyacrylamide: 0.2%
Sodium alginate: 3%
Alkyl, polyether: 5%
Blue pigment: 0.05%
Triazole pyridone: 0.04%
Water: mend to 100%
The preparation of embodiment 6:30% paraquat paste
Paraquat (dichloride content 42%): 30% (folding hundred backs add)
AEO: 8%
APG: 2%
Propane diols: 5%
Xanthans: 0.22%
Gelatin: 0.3%
Poly-aspartic-acid: 0.2%
Polyvinylpyrrolidone: 1%
Aluminium-magnesium silicate: 3%
Earth powder: 3%
Blue pigment: 0.05%
Triazole pyridone: 0.06%
Urea: mend to 100%
The preparation of embodiment 7:37% paraquat paste
The preparation of high-load paraquat mother liquor: under paraquat mother liquor (paraquat dichloride content >=42%) reduced pressure, high temperature is heated to the paraquat viscous fluid for 60～80 ℃, content 70%.
Paraquat (dichloride content 70%): 37% (folding hundred backs add)
C18 quaternary ammonium salt: 5%
Glycerine: 8%
HPMA: 1%
Polyethylene glycol oxide: 0.2%
Soluble starch: 10%
Glucose: 2%
Polyvinyl alcohol: 0.5%
Kaolin: 3%
White carbon: 0.5%
Pyridine: 0.2%
Triazole pyridone: 0.07%
Water: mend to 100%
The preparation of embodiment 8:50% paraquat paste
The preparation of high-load paraquat mother liquor: under paraquat mother liquor (paraquat dichloride content >=42%) reduced pressure, high temperature is heated to the paraquat viscous fluid for 60～80 ℃, content 77%.
Paraquat (dichloride content 77%): 50% (folding hundred backs add)
C18 quaternary ammonium salt: 5%
Diallyl QAS polymer: 3%
Glycerine: 5%
Soluble starch: 2%
Guar gum: 0.5%
Sodium carboxymethylcellulose: 2%
Zeolite: 8%
Green pigment: 0.02%
Triazole pyridone: 0.09%
Glucose: mend to 100%
The comparative example 1:
In order to compare with embodiments of the invention, using the most widely on the buying market, 200g/l paraquat aqua (just reaches earlier
Restrain no track
) be used for biological activity test.
The comparative example 2:
In order to compare with embodiments of the invention, buying is used 41% glyphosate isopropyl amine salt aqua (Meng Shandou the most widely on the market
Farming reaches
) be used for biological activity test.
The comparative example 3:
In order to compare with embodiments of the invention, buying is used 18% careless ammonium phosphine soluble concentrate (Bayer the most widely on the market
Protecting examination reaches
) be used for biological activity test.
Activity of weeding
The weeds kind that is used for testing postemergence herbicide activity of the present invention is listed in each following embodiment.These tests are that the weeds that are directed against land for growing field crops in all parts of the country self-sow carry out, and mainly contain lady's-grass (Digitaria sanguinalis (L.) Scop.), eleusine indica (Eleusine indica (L.) Gaertn), the rhizome of nutgrass flatsedge (Rhizoma Cyperi), Ageratum conyzoides (Ageratum conyzoides L), Horseweed Herb (Conyza canadensis (L.) Cronq.) etc.
Test is carried out according to the test method and the investigation method of GB/T17980.1-17980.50-2000 " pesticide field efficacy medicine test criterion () " regulation.Each is handled according to the RD dispenser, and 4 repetitions are established in each processing, and each sub-district area is 45 m2, each sub-district randomized arrangement; In the dispenser of weed growth animated period, water consumption is calculated according to 600L/ h ㎡; Respectively at behind the medicine 1,3,5,7,14 day, select 3-4 point at random in each sub-district, every some 0.5m2 carries out sample investigation, the total strain number of every kind of weeds of record investigation.The average weeds density in the preceding test region of medicine is 1105 strains/㎡, the main ruderal species class lady's-grass in this ground, eleusine indica, the rhizome of nutgrass flatsedge, Ageratum conyzoides, Horseweed Herb, and the accounting example classifies 38.3%, 17.1%, 16.2%, 11.5%, 13.6% as by strain number percentage branch.Result of the test is calculated the drug effect of medicament according to the following equation:
The remaining number of weeds of blank district careless number-treatment region alive
Control efficiency (%)=------------------* 100
Blank district careless number alive
And after dispenser, did once total herbicidal effect investigation in 14 days, adopt the eye estimate investigation method.Classification investigation and record.Weed control efficacy grade scale such as following table:
Give birth to the herbicidal effect test of surveying 1 pair of lady's-grass of embodiment
According to test requirements document, after the lady's-grass with embodiment and comparative example's chemicals treatment growth animated period, strain preventive effect of each processing of the investigation of 1,3,5,7,14 day after handling respectively, its result of the test is seen table one.
Table one embodiment and comparative example are to the control efficiency (%) of lady's-grass
Can find out that according to data in the table each embodiment of paraquat paste compares with comparative example 1, drug effect is better than comparative example 1 or not remarkable with comparative example's 1 difference; Each embodiment of paraquat paste compares with comparative example 2,3, and drug effect obviously is better than comparative example 2,3, significant difference.
Give birth to the herbicidal effect test of surveying 2 pairs of eleusine indicas of embodiment
According to test requirements document, after the eleusine indica with embodiment and comparative example's chemicals treatment growth animated period, strain preventive effect of each processing of the investigation of 1,3,5,7,14 day after handling respectively, its result of the test is seen table two.
Table two embodiment and comparative example are to the control efficiency (%) of eleusine indica
Can find out that according to data in the table each embodiment of paraquat paste compares with comparative example 1, not remarkable to eleusine indica drug effect difference; Each embodiment of paraquat paste compares with comparative example 2,3, and drug effect obviously is better than comparative example 2,3, and significant difference shows the excellent preventive effect continuation of eleusine indica simultaneously, can reach the effect that eleusine indica is effectively controlled.
Give birth to the herbicidal effect test of surveying 3 pairs of rhizome ofs nutgrass flatsedge of embodiment
According to test requirements document, after the rhizome of nutgrass flatsedge with embodiment and comparative example's chemicals treatment growth animated period, strain preventive effect of each processing of the investigation of 1,3,5,7,14 day after handling respectively, its result of the test is seen table three.
Table three embodiment and comparative example are to the control efficiency (%) of the rhizome of nutgrass flatsedge
Can find out that according to data in the table each embodiment of paraquat paste compares with comparative example 1, at 80%-90%, drug effect difference was not remarkable between each was handled to the overall preventive effect of the rhizome of nutgrass flatsedge; Each embodiment of paraquat paste compares with comparative example 2,3, and drug effect obviously is better than comparative example 2,3, significant difference between each is handled, and the paraquat paste can reach the effect of the control rhizome of nutgrass flatsedge simultaneously, significantly is superior to comparative example 2,3.
Give birth to the herbicidal effect test of surveying 4 pairs of Ageratum conyzoidess of embodiment
According to test requirements document, after the Ageratum conyzoides with embodiment and comparative example's chemicals treatment growth animated period, strain preventive effect of each processing of the investigation of 1,3,5,7,14 day after handling respectively, its result of the test is seen table four.
Table four embodiment and comparative example are to the control efficiency (%) of Ageratum conyzoides
Can find out that according to data in the table each embodiment of paraquat paste compares with comparative example 1, about 90%, drug effect difference is not remarkable to the overall preventive effect of Ageratum conyzoides; Each embodiment of paraquat paste compares with comparative example 2,3, and 1 day, 3 days, 5 days drug effects obviously are better than comparative example 2,3, drug effect significant difference behind the medicine; Drug effect no significant difference between each is handled after 7 days, 14 days behind the medicine.
Give birth to the herbicidal effect test of surveying 5 pairs of Horseweed Herbs of embodiment
According to test requirements document, after the Horseweed Herb with embodiment and comparative example's chemicals treatment growth animated period, strain preventive effect of each processing of the investigation of 1,3,5,7,14 day after handling respectively, its result of the test is seen table five.
Table five embodiment and comparative example are to the control efficiency (%) of Horseweed Herb
Can find out that according to data in the table each embodiment of paraquat paste compares with comparative example 1, about 80%-90%, drug effect difference is not remarkable to the overall preventive effect of Horseweed Herb; Each embodiment of paraquat paste compares with comparative example 2, and aspect quick-acting and whole control grass effect aspect, drug effect all obviously is better than comparative example 2; Each embodiment of paraquat paste compares with comparative example 3, obviously is superior to comparative example 2 at (behind the medicine 1 day, 3 days, 5 days) aspect the quick-acting, and 7 days, 14 days drug effects and comparative example's 3 differences are not remarkable behind the medicine.
Give birth to and survey embodiment 6
According to the requirement of Ministry of Agriculture's agricultural chemicals field efficacy criterion, each handled the general control effect to weeds in field investigation according to the range estimation technique of estimation in 14 days after dispenser.Investigation result is seen table six.
14 days each embodiment handle sub-district weeds preventive effect hierarchical table behind table six medicine
Shown in above-mentioned test data; The cauline leaf spraying under the RD condition of paraquat paste is used; Compare with contrast agents 200g/l paraquat aqua, 41% glyphosate isopropyl amine salt aqua, 18% careless ammonium phosphine soluble concentrate, paraquat paste preventive effect is stable, shows excellent weed control efficacy.
The storage-stable test
In order to confirm the storage-stable of embodiment product; Requirement according to " agricultural chemicals storage at normal temperature stability test general rule " NY/T1427-2007; Under 30 ± 2 ℃ condition, sample is stored; And in the sample storage process, select to store initial, the 3rd, 6,12 and 24 months 5 time points the sample active constituent content is detected, testing result is seen table seven.
Table seven paraquat paste room temperature storage stability test result
As above shown in the table, the resolution ratio of active ingredient paraquat is lower than 5% in the paraquat paste under long-time normal temperature condition, is stable after long term storage so the paraquat paste can be described.
Claims (7)
1. paraquat paste, it is characterized in that: the paste that contains paraquat is water-dispersion type or water miscible pasty masses; Described paraquat is 1～50% in its mass percentage content of paraquat dichloride.
2. paraquat paste according to claim 1 is characterized in that described paste contains: paraquat, surfactant, emetic, high molecular weight water soluble polymer, filler and more than one compositions arbitrarily in NMF, colouring agent, sense of smell caution agent.
3. paraquat paste according to claim 1 is characterized in that: described paraquat is in its mass percentage content of paraquat dichloride preferred 5～30%.
4. paraquat paste according to claim 2 is characterized in that: described surfactant be in APG, sodium sulfate of polyethenoxy ether of fatty alcohol, AESA, sldium lauryl sulfate, diglycollic amide stearic acid monoglyceride, lignin sulfonic acid sodium salt, alkyl, polyether, AEO and the C18 quaternary ammonium salt any one or more than one; Its mass percentage content is 1～20%, preferred 5～15%.
5. paraquat paste according to claim 2 is characterized in that: described high molecular weight water soluble polymer is one or more the mixture in polyethylene glycol, modified polyacrylic acid sodium, polyacrylamide, polyethylene glycol oxide, HPMA, poly, diallyl QAS polymer, polyvinylpyrrolidone, poly-epoxy succinic acid, sodium carboxymethylcellulose, xanthans, sodium alginate, gum Arabic, gelatin, guar gum, the polyvinyl alcohol; Its mass percentage content is 1～20%, preferred 5～10%.
6. paraquat paste according to claim 2 is characterized in that: described filler is one or more a mixture in water, white carbon, kaolin, zeolite, cyclodextrin, soluble starch, urea, earth powder, glucose, the aluminium-magnesium silicate.
7. paraquat paste according to claim 1 is characterized in that making through following two kinds of preparation methods:
1. prepare low content paraquat paste, i.e. content≤35% o'clock is in system cream container; Add the paraquat mother liquor that measures, its dichloride content>=42% adds filler, water soluble polymer component then in batches; Carrying out homogeneous simultaneously stirs, grinds; Cooperate vacuum pumping simultaneously, material finishes the back and prolongs above operating procedure 50 minutes, and material is fully mediated;
Add surfactant, NMF and other helper component at last, fully mediate 30 minutes to paste body shape, take out a small amount of lotion detect qualified after; Squeeze into the ageing of lotion hold-up tank; Material is cooled off naturally, and assembly time 3 hours fully expands material and afterwards forms the homogeneous phase adherend;
2. prepare high-load paraquat paste, i.e. content>35% o'clock, with the paraquat mother liquor, its paraquat dichloride content >=42%, under the reduced pressure, high temperature is heated to the paraquat viscous fluid for 60～80 ℃, and content is 60%～85%;
To concentrate back paraquat viscous fluid is mother liquor, and 1. repeating step promptly gets.
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| CN102919228A (en) * | 2012-11-01 | 2013-02-13 | 南通德益化工有限公司 | Paraquat mastic |
| CN103070173A (en) * | 2012-12-14 | 2013-05-01 | 上海师范大学 | Paraquat cream and its preparation technology |
| CN103202297A (en) * | 2012-12-18 | 2013-07-17 | 江苏凯元科技有限公司 | Processing method of high-efficient paraquat paste |
| CN103535347A (en) * | 2013-10-25 | 2014-01-29 | 南京师范大学 | Solid or liquid pesticide composition of cyclodextrin and dipyridyl herbicide clathrate compound, and preparation method of composition |
| CN103719079A (en) * | 2013-12-27 | 2014-04-16 | 山东省农药科学研究院 | Tablet containing paraquat dichloride and preparation method thereof |
| CN103734126A (en) * | 2013-12-27 | 2014-04-23 | 山东省农药科学研究院 | Water-soluble granule containing paraquat dichloride and preparation method of water-soluble granule |
| CN104273130A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for producing herbicides |
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| CN102919228A (en) * | 2012-11-01 | 2013-02-13 | 南通德益化工有限公司 | Paraquat mastic |
| CN103070173A (en) * | 2012-12-14 | 2013-05-01 | 上海师范大学 | Paraquat cream and its preparation technology |
| CN103202297A (en) * | 2012-12-18 | 2013-07-17 | 江苏凯元科技有限公司 | Processing method of high-efficient paraquat paste |
| CN103535347B (en) * | 2013-10-25 | 2016-08-17 | 南京师范大学 | Cyclodextrin and the solid of bipyridyl herbicides clathrate or liquid pesticide compositions and preparation method thereof |
| CN103535347A (en) * | 2013-10-25 | 2014-01-29 | 南京师范大学 | Solid or liquid pesticide composition of cyclodextrin and dipyridyl herbicide clathrate compound, and preparation method of composition |
| CN103719079A (en) * | 2013-12-27 | 2014-04-16 | 山东省农药科学研究院 | Tablet containing paraquat dichloride and preparation method thereof |
| CN103734126A (en) * | 2013-12-27 | 2014-04-23 | 山东省农药科学研究院 | Water-soluble granule containing paraquat dichloride and preparation method of water-soluble granule |
| WO2015096274A1 (en) * | 2013-12-27 | 2015-07-02 | 山东省农药科学研究院 | Paraquat dichloride-containing granules and preparation method therefor |
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| CN104273130A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for producing herbicides |
| WO2018039842A1 (en) * | 2016-08-29 | 2018-03-08 | 沈建美 | Imidacloprid preparation process |
| CN113940351A (en) * | 2020-07-17 | 2022-01-18 | 汕头市深泰新材料科技发展有限公司 | Paraquat composition containing anionic polysaccharide and application thereof |
| CN113940352A (en) * | 2020-07-17 | 2022-01-18 | 汕头市深泰新材料科技发展有限公司 | Attenuated paraquat composition containing alginate or derivatives thereof and application thereof |
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