CN103222461B - Environment-friendly mixed solvent used for pyrethroid pesticide preparation - Google Patents
Environment-friendly mixed solvent used for pyrethroid pesticide preparation Download PDFInfo
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Abstract
The invention discloses an environment-friendly mixed solvent used for a pyrethroid pesticide preparation. The mixed solvent is composed of dimethyl carbonate and white oil, wherein mass percent of dimethyl carbonate is 0.5-60%, the mass percent of white oil is 0.5-40%, and the rest parts are other components of the pesticide preparation. The mixed solvent is used in a pyrethroid pesticide, dissolubility of a pyrethroid active ingredient in the mixed solvent system is high, stability is good, and the mixed solvent has the advantages of safety, environmental friendliness, low cost and wide application. The mixed solvent is the best choice for substituting a solvent of the conventional pesticide preparation, such as methyl alcohol, dimethyl benzene and N,N-dimethylformamide. Dosage forms applicable to the pyrethroid pesticide can be missible oil, emulsion in water and microemulsion.
Description
Technical field
The present invention relates to pesticide solvent technical field, be specifically related to a kind of environmental protection mixed solvent for pyrethrin pesticide preparation.
Background technology
In current pyrethrin pesticide preparation processing main with organic solvents such as methyl alcohol, dimethylbenzene and DMFs as solvent, the extensive application of these organic solvents brings problems.First, organic solvent, in the application process of pesticidal preparations product, to there being larger remaining in control crop and environment, causes significant threat to agricultural production security and Environmental security.Secondly, organic solvent methyl alcohol, dimethylbenzene, toluene, benzene is utilized to produce Pesticidal products as solvent, a large amount of security risk is there is in production, transportation, solvent not only causes health threat to workman in production application process, simultaneously also because the flash-point of this kind solvent is lower, volatility cause soon inflammable, explosive and loss large etc. the many problems of storage.Again, use Conventional solvents preparation pyrethrin pesticide preparation, product through time storage process in active component resolution ratio easily exceed standard, within general 12 ~ 24 months, resolution ratio can reach 10 ~ 15%, particularly water base chemical preparation, comprises aqueous emulsion and microemulsion resolution ratio up to 20 ~ 40%.And professional standard General Requirements 2 years storage resolution ratio be less than≤5%.Finally, along with the development of society, the raising of agricultural production security consciousness, country puts into effect relevant policy, controls the use of the organic solvent in Pesticidal products, thus guides the selection of pesticide solvent to future development that is green, environmental protection.
Dimethyl carbonate is a kind of water white fine solvent, boiling point 90.1 DEG C, fusing point 4 DEG C, and slightly fragrance is one of important downstream product of methyl alcohol, has safety, toxicity is little, pollution is few, is regarded as " green " chemical products.This solvent is slightly soluble in water, can with immiscible organic solvents such as arbitrary proportion and alcohol, ketone, esters, non-corrosiveness.2000, DMC, by the registration of European chemical management board, belonged to nontoxic or micro-and poisons chemical product.Known through the inquiry of patent prior art, the patent Affirm (Merck Co.) microemulsion of solvent " a kind of be with dimethyl carbonate " (application number: 201210300394.3) report the correlative study using dimethyl carbonate preparation Affirm (Merck Co.) microemulsion.But different pesticide activity component solvability requires different, key effect is played in the dissolving dispersion of solubility property to former medicine of solvent, so the present invention is by dimethyl carbonate and white oil synergy, the soluble end of dimethyl carbonate and white oil is expanded, with the dissolubility requirement of satisfied different pesticide activity component.
White oil is a kind of colourless, odorless, tasteless viscous liquid, is generally made up of the alkane of relative molecular weight 300-400 and cycloalkane, has chemical stability and photostability.Report at present in dissolvant white oil has " farm chemical emulsion preparation " (patent No.: 200710117977.1).This patent reports single use white oil and substitute dimethylbenzene as farm chemical emulsion preparation solvent, but use white oil dissolving chrysanthemum ester class former drug effect fruit unsatisfactory during pesticidal preparations research and development test, other pesticide active ingredient soluble end that white oil is applicable to except chrysanthemum ester class is narrower, and this patent does not illustrate the stability indicator in the cream preparation system of pyrethrin pesticide using white oil as solvent yet simultaneously.
Summary of the invention
The object of this invention is to provide a kind of environmental protection mixed solvent for pyrethrin pesticide preparation; with the alternative methyl alcohol of this mixed solvent, dimethylbenzene and N; the organic solvents such as dinethylformamide, solve the various problems that current pyrethrin pesticide is with an organic solvent existing.This mixed solvent and pesticide active ingredient compatibility good, dissolving power is strong, and applied widely, in this dicyandiamide solution, pyrethrin pesticide composition ageing stability is good, environmentally friendly.
Above-mentioned purpose of the present invention is achieved by the following technical solution: a kind of environmental protection mixed solvent for pyrethrin pesticide preparation, is made up of dimethyl carbonate and white oil, wherein each component in the formulation shared mass percent be: dimethyl carbonate 0.5-60%; White oil 0.5-40%.
In the present invention, unless there are specified otherwise, described percentage is mass percent.And dimethyl carbonate and white oil in the formulation shared mass percent sum are not 100%.
As preferably, in the present invention, for the preferred 10-40% of the dimethyl carbonate in the mixed solvent of pyrethrin pesticide; The preferred 5-30% of white oil.
Preferably comprise for the environmental protection mixed solvent of pyrethrin pesticide preparation described in a typical example in the present invention and draw together dimethyl carbonate 0.5%, white oil 9.5%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 10%, white oil 40%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 20%, white oil 30%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 40%, white oil 27%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 9.5%, white oil 0.5%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 5%, white oil 5%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 13%, white oil 12%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 30%, white oil 20%.
In another embodiment of the invention, the described environmental protection mixed solvent for pyrethrin pesticide preparation preferably comprises dimethyl carbonate 60%, white oil 20%.
Environmental protection mixed solvent for pyrethrin pesticide preparation of the present invention can be uniformly mixed with pesticide active ingredient, emulsifying dispersant.
Preferably, described pesticide activity component is selected from cypermethrin, beta-cypermethrin, gamma cyhalothrin, decis, sumicidin, cyfluthrin or Biphenthrin pesticidal preparations.
Described emulsifying dispersant is selected from one or more in fatty alcohol-polyoxyethylene ether, polycarboxylate, alkylaryl polyoxyethylene polyoxypropylene ether, nonyl phenol polyethenoxy ether, nonyl phenol polyethenoxy ether phosphate, calcium dodecyl benzene sulfonate, phenethyl phenol polyethenoxy sodium sulphate or alkylphenol polyoxyethylene.
The formulation that environmental protection mixed solvent for pyrethrin pesticide preparation of the present invention can be used for processing is missible oil, aqueous emulsion and microemulsion.
Compared with prior art, the present invention has following beneficial effect:
1, solubility property significantly improves.This mixed solvent greatly improves the solubility property to the former medicine of chrysanthemum ester class, relative to alone white oil as pesticide solvent, solubility property can improve 8 times, for beta-cypermethrin, when alone white oil dissolves beta-cypermethrin, need white oil: beta-cypermethrin >=24:1 solubilized is complete; And when adopting this mixed solvent to dissolve, only need: mixed solvent: beta-cypermethrin >=3:1 and dissolvable agents completely, solve the defect that alone white oil formulated product content is low, and the stability of pyrethrin pesticide preparation are better in this dicyandiamide solution.
2, safety environmental protection again.The dimethyl carbonate that employing flash-point is high and white oil are as pesticide solvent, and dimethyl carbonate flash-point: 21.7 DEG C (opening), white oil flash-point: 164-223 DEG C (opening), the two mixes flash-point, nonflammable explosive.These two solvent toxicity are low, little to environmental influence, to production and user's safety.
3, cost is low.The present invention adopts dimethyl carbonate and white oil to prepare pyrethrin pesticide as solvent, and at present, dimethylbenzene price is 9000-1000 yuan/ton, and dimethyl carbonate price is 6000 yuan/ton, and white oil price is 8000 yuan/ton.Dimethyl carbonate and white oil is utilized to substitute dimethylbenzene, can be effectively cost-saving.
4, synergy is remarkable.The present invention adopts dimethyl carbonate and white oil to prepare pyrethrin pesticide as solvent, can significantly improve the preventive effect of pyrethrin pesticide preparation pest control.
In addition, not only alone than the white oil solvability of mixed solvent is large, and active ingredient pyrethrin pesticide good stability in this mixed solvent system.Meanwhile, this mixed solvent is good to Target crops safety; Low to environmental toxicity, pollute little; Use cost is low, the significant advantage of synergy, more meets the demand of social development.
Embodiment
The present invention is described further according to following embodiment, and those skilled in the art can understand, following embodiment only plays explanation to the present invention.Under the prerequisite not deviating from invention spirit, any improvement that the present invention is done and substituted all within scope.
preparation embodiment
Reagent used in embodiment and medicine are commercially available conventional products.In following examples
Resolution ratio computing formula: resolution ratio %=(stores front content-Re and stores or content after normal temperature storage) front content × 100% of/storage
Relative density (g/ml, 20 DEG C) measures: with reference to GB/T 4472-1984 chemical products density, relative density determination general rule
The assay method of solvability: (under normal temperature, 25 DEG C) adopts with the pyrethrin pesticide that can dissolve in 100g solvent and the grams of the state that reaches capacity calculates.The computing formula of solvability is: solvability=dissolve the saturated grams/100g of former medicine.
Acidity (%) measures: spend assay method with reference to GB/T 28135-2011 agricultural chemicals acid (alkali)
Flash-point (remaining silent) measures: with reference to NYT1860.11-2010 agricultural chemicals physical and chemical property determining test guidance the 11st part
Determination of moisture: GB1600-2001 agricultural chemicals moisture determination.
Before storage, content is that preparation of samples carries out (54 ± 2 DEG C) storage 14 days institutes and detects the content of former medicine, and the rear content of storage is that sample carries out (54 ± 2 DEG C) and stores the content detecting former medicine for 14 days.Heating storage: storage temperature (54 ± 2) DEG C, stores 14 days.
Embodiment 1:
Solvent samples 1: take dimethyl carbonate 5kg, white oil 95kg respectively, then stirs and obtains the mixed solvent that 100kg originally executes example.
3% high performance aqueous emulsion of cypermethrin (sample 1)
Each constituent mass percentage in formula: the former medicine of 95% beta-cypermethrin: 3%, solvent samples 1 10%, fatty alcohol-polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05%, water complement to 100%.
Beta-cypermethrin above in example also can be replaced the formulation products of cypermethrin, gamma cyhalothrin, decis, sumicidin, cyfluthrin and Biphenthrin.
3% high performance aqueous emulsion of cypermethrin (control sample 1)
Each constituent mass percentage in formula: the former medicine of 95% beta-cypermethrin: 3%, dimethylbenzene 10%, fatty alcohol-polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05%, water complement to 100%.
Above sample, carry out storing simultaneously the mensuration of front content, normal temperature through time stability test and heating storage, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt high performance liquid chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of beta-cypermethrin measure, and calculate its resolution ratio, measurement result is in table 1, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 1 3% high performance aqueous emulsion of cypermethrin
。
Show from upper watch test result, sample 1 is namely with dimethyl carbonate 0.5%, and white oil 9.5% is dicyandiamide solution, the comparative sample 1 that it is solvent that the ageing stability of sample 1 is far superior to 10% dimethylbenzene.
All other technical indicators of table 2 sample 1
。
Table 3 solvent samples 1 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 1 pair of chrysanthemum ester class active component has good dissolubility, and dissolving chrysanthemum ester class active component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.3% high performance aqueous emulsion of cypermethrin using solvent samples 1 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with the stability of content chrysanthemum ester class aqueous emulsion, and alone white oil due to solubility property poor, with in solvent samples 1 same amount situation, namely add 10% white oil due to chrysanthemum ester active component cannot be dissolved in formula, therefore 3% high performance aqueous emulsion of cypermethrin cannot be prepared.
3% high performance aqueous emulsion of cypermethrin (control sample 1) carries out biologically active drug effect with 3% high performance aqueous emulsion of cypermethrin (sample 1) and compares, test period in June, 2012, test site: suburbs, Liuzhou, active ingredient usage amount: 9.4g/ hectare, occupation mode: be watered spraying, controlling object: wild cabbage-cabbage caterpillar, result of the test is as shown in the table.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 4 3% high performance aqueous emulsion of cypermethrin (control sample 1) and 3% high performance aqueous emulsion of cypermethrin (sample 1) prevent and treat cabbage caterpillar pharmacodynamic results table
。
Sample 1 is better than the effect of control sample 1 control efficiency cabbage pieris or suitable as can be seen from the table.
Above-mentioned table 1 ~ 4 show, 3% high performance aqueous emulsion of cypermethrin (sample 1) prepared by solvent samples 1 and other chrysanthemum ester class aqueous emulsion ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 1 dissolves the ability of chrysanthemum ester class and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.Biological activity determination shows 3% high performance aqueous emulsion of cypermethrin (sample 1) control cabbage pieris drug effect and control sample 1 quite or better.In sum, solvent samples 1 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 2:
Solvent samples 2: take dimethyl carbonate 20kg, white oil 80kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
2.5% Biphenthrin microemulsion (sample 2)
Each constituent mass percentage in formula: the former medicine of 95% Biphenthrin: 2.5%, solvent samples 50%(is equivalent to add dimethyl carbonate 10% in the product, white oil 40%), alkylaryl polyoxyethylene polyoxypropylene ether 8%, polycarboxylate 7%, calcium dodecyl benzene sulfonate 2%, ethylene glycol 3%, defoamer 0.05%, water complements to 100%.
Biphenthrin above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, gamma cyhalothrin, decis, sumicidin and cyfluthrin.
2.5% Biphenthrin microemulsion (control sample 2)
Each constituent mass percentage in formula: the former medicine of 95% Biphenthrin: 2.5%, dimethylbenzene 40%, methyl alcohol 10%, alkylaryl polyoxyethylene polyoxypropylene ether 8%, polycarboxylate 7%, calcium dodecyl benzene sulfonate 2%, ethylene glycol 3%, defoamer 0.05%, water complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt gas chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of Biphenthrin measure, and calculate its resolution ratio, measurement result in table 5,
test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 5 2.5% Biphenthrin microemulsion
。
Above-mentioned result of the test shows, sample 2 is namely with dimethyl carbonate 10%, and the dicyandiamide solution of white oil 40%, the ageing stability of sample 2 is better than with dimethylbenzene 40%, and methyl alcohol 10% is the sample of solvent.
All other technical indicators of table 6 sample 2
。
Table 7 sample 2 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 2 pairs of chrysanthemum ester class active components have good dissolubility, and the ability of dissolving chrysanthemum ester class active component is suitable with dimethylbenzene, and is better than dimethyl carbonate.The stability of chrysanthemum ester class active component in solvent samples 2 system is also better than the stability in dimethylbenzene or dimethyl carbonate system, and alone white oil due to solubility property poor, with in solvent samples 1 same amount situation, namely add 50% white oil in formula due to cannot lytic activity component, 2.5% Biphenthrin microemulsion cannot be prepared.
2.5% Biphenthrin microemulsion (control sample 2) carries out biologically active drug effect with 2.5% Biphenthrin microemulsion (sample 2) and compares, test period in June, 2012, test site: Fujian Anxi County, active ingredient usage amount: 37.5g/ hectare, occupation mode: be watered spraying, controlling object: tea tree-tea lesser leafhopper, result of the test is as following table.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
The pharmacodynamic results table of tea lesser leafhopper prevented and treated by table 8 2.5% Biphenthrin microemulsion (control sample 2) and 2.5% Biphenthrin microemulsion (sample 2)
。
As can be seen from the above table, sample 2 prevent and treat tea tree-tea lesser leafhopper than control sample 2 effect better or quite.
Above-mentioned table 5 ~ 8 show, the 2.5% Biphenthrin microemulsion that in implementation column 2, solvent-applied sample 2 is prepared and other chrysanthemum ester class microemulsion ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 2 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.The 2.5% Biphenthrin microemulsion that biological activity determination display solvent samples 2 and dimethylbenzene are prepared prevents and treats tea tree-tea lesser leafhopper drug effect quite or better.In sum, solvent samples 2 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 3:
Solvent samples 3: take dimethyl carbonate 40kg, white oil 60kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
5% deltamethrin milk oil (sample 3)
Each constituent mass percentage in formula: 95% deltamethrin original medicine: 5%, solvent samples 50%(is equivalent to add dimethyl carbonate 20% in the product, white oil 30%), polyoxyethylene nonylphenol ether 6%, calcium dodecyl benzene sulfonate 4%, methyl oleate complement to 100%.
Decis above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, gamma cyhalothrin, sumicidin, cyfluthrin and Biphenthrin.
5% deltamethrin milk oil (control sample 3)
Each constituent mass percentage in formula: 95% deltamethrin original medicine: 5%, dimethylbenzene 50%, polyoxyethylene nonylphenol ether 6%, calcium dodecyl benzene sulfonate 4%, methyl alcohol complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.With reference to HG2801-1996 adopt gas chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of decis measure, and calculate its resolution ratio, measurement result in table 9,
test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 9 5% deltamethrin milk oil
。
Above-mentioned result of the test shows, sample 3 is namely with dimethyl carbonate 20%, and the dicyandiamide solution of white oil 30%, the ageing stability of sample 3 is better than with dimethylbenzene 50%, and methyl alcohol supplies the sample into solvent.
Other technical indicator of table 10 sample 3
。
Table 11 solvent samples 3 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 3 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.5% deltamethrin milk oil using solvent samples 3 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 3 same amount situation, namely add 50% white oil in formula due to cannot lytic activity component, 5% deltamethrin milk oil cannot be prepared.
5% deltamethrin milk oil (control sample 3) carries out biologically active drug effect with 5% deltamethrin milk oil (sample 3) and compares, test period in June, 2012, test site: suburb, Yongning county, Guangxi, active ingredient usage amount: 18g/ hectare, occupation mode: be watered spraying, controlling object: Chinese cabbage-cabbage caterpillar, result of the test is as following table.
The computing formula of control efficiency: the computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 12 5% deltamethrin milk oil (control sample 3) compares with 5% deltamethrin milk oil (sample 3) drug effect
。
As can be seen from the above table, sample 3 and control sample 3 prevent and treat Chinese cabbage-cabbage caterpillar better or quite.
Above-mentioned table 9 ~ 12 show, 5% decis that in implementation column 3, solvent-applied sample 3 is prepared and other chrysanthemum ester class missible oil ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 3 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate or white oil.5% deltamethrin milk oil that biological activity determination display solvent samples 3 and dimethylbenzene are prepared prevents and treats Chinese cabbage-cabbage caterpillar drug effect quite or better.In sum, solvent samples 3 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 4:
Solvent samples 4: take dimethyl carbonate 59.7kg, white oil 40.3kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
5% fenvalerate missible oil (sample 4)
Each constituent mass percentage in formula: 95% sumicidin: 5%, solvent samples 67%(is equivalent to add dimethyl carbonate 40% in the product, white oil 27%), alkylaryl polyoxyethylene polyoxypropylene ether 4%, phenethyl phenol polyethenoxy sodium sulphate 6%, methyl oleate complement to 100%.
Sumicidin above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, gamma cyhalothrin, decis, cyfluthrin and Biphenthrin.
5% fenvalerate missible oil (control sample 4)
Each constituent mass percentage in formula: 95% sumicidin: 5%, dimethylbenzene 67%, alkylaryl polyoxyethylene polyoxypropylene ether 4%, phenethyl phenol polyethenoxy sodium sulphate 6%, methyl oleate complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt gas chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of sumicidin measure, and calculate its resolution ratio, measurement result is in table 13, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 13 5% fenvalerate missible oil
。
Above-mentioned result of the test shows, sample 4 is namely with dimethyl carbonate 40%, and the dicyandiamide solution of white oil 27%, the ageing stability of sample 4 is better than with dimethylbenzene 67%, and methyl oleate supplies the sample into solvent.
All other technical indicators of table 14 sample 4
。
Table 15 solvent samples 4 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 4 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.5% fenvalerate missible oil using solvent samples 4 to prepare and be better than dimethylbenzene and the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 3 same amount situation, namely add 67% white oil in formula due to cannot lytic activity component, 5% fenvalerate missible oil cannot be prepared.
5% fenvalerate missible oil (control sample 4) carries out biologically active drug effect with 5% fenvalerate missible oil (sample 4) and compares, test period in June, 2012, test site: county, Zhuhai City, Guangdong Province, active ingredient usage amount: 40g/ hectare, occupation mode: be watered spraying, controlling object: soybean-aphid, result of the test is as following table 16.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100
Table 16
5% fenvalerate missible oil (control sample 4) and 5% sumicidin (sample 4) are to preventing and treating soybean aphid pharmacodynamic results
。
As can be seen from the above table, sample 4 prevent and treat soybean aphid than control sample 4 effect better or quite.
Above-mentioned table 14 ~ 16 show, 5% deltamethrin milk oil that in implementation column 4, solvent-applied sample 4 is prepared and other chrysanthemum ester class missible oil ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 4 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate or white oil.5% deltamethrin milk oil that biological activity determination display solvent samples 4 and dimethylbenzene are prepared prevents and treats soybean-aphid drug effect quite or better.In sum, solvent samples 4 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 5:
Solvent samples 5: take dimethyl carbonate 95kg, white oil 5kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
2.5% cyfluthrin aqueous emulsion (sample 5)
Each constituent mass percentage in formula: the former medicine of 95% cyfluthrin: 2.5%, solvent samples 10%(is equivalent to add dimethyl carbonate 9.5% in the product, white oil 0.5%), fatty alcohol-polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05%, water complements to 100%.
Cyfluthrin above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, gamma cyhalothrin, decis, sumicidin and Biphenthrin.
2.5% cyfluthrin aqueous emulsion (control sample 5)
Each constituent mass percentage in formula: the former medicine of 95% cyfluthrin: 2.5%, dimethylbenzene 10%, fatty alcohol-polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05%, water complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt high performance liquid chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of cyfluthrin measure, and calculate its resolution ratio, measurement result is in table 17, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 17 2.5% cyfluthrin aqueous emulsion
。
Above-mentioned result of the test shows, sample 5 namely with dimethyl carbonate 9.5%, the dicyandiamide solution of white oil 0.5%, the sample that it is solvent that the ageing stability of sample 5 is better than with dimethylbenzene 10%.
All other technical indicators of table 18 sample 5
。
Table 19 solvent samples 5 and white oil, dimethyl carbonate, dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 5 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.The 2.5% cyfluthrin aqueous emulsion using solvent samples 5 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 5 same amount situation, namely add 10% white oil in formula due to cannot lytic activity component, 2.5% cyfluthrin aqueous emulsion cannot be prepared.
2.5% cyfluthrin aqueous emulsion (control sample 5) carries out biologically active drug effect with 2.5% cyfluthrin aqueous emulsion (sample 5) and compares, test period in June, 2012, test site: Xin Xu town, Nanning City field of vegetables, active ingredient usage amount: 20g/ hectare, occupation mode: be watered spraying, controlling object: wild cabbage-cabbage caterpillar, result of the test is as following table 20.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 20 2.5% cyfluthrin aqueous emulsion (control sample 5) and 2.5% cyfluthrin aqueous emulsion (sample 5) drug effect comparative result.
。
As can be seen from the above table, sample 5 prevent and treat wild cabbage-cabbage caterpillar than control sample 5 effect better or quite.
Above-mentioned table 17 ~ 20 show, the 2.5% cyfluthrin aqueous emulsion that in implementation column 5, solvent-applied sample 5 is prepared and other chrysanthemum ester class aqueous emulsion ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 5 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.The 2.5% cyfluthrin aqueous emulsion that biological activity determination display solvent samples 5 and dimethylbenzene are prepared prevents and treats wild cabbage-cabbage caterpillar drug effect quite or better.In sum, solvent samples 5 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 6:
Solvent samples 6: take dimethyl carbonate 50kg, white oil 50kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
5% gamma cyhalothrin aqueous emulsion (sample 6)
Each constituent mass percentage in formula: the former medicine of 95% gamma cyhalothrin: 5%, solvent samples 10%(is equivalent to add dimethyl carbonate 5% in the product, white oil 5%), alkylphenol polyoxyethylene 3%, nonyl phenol polyethenoxy ether phosphate 2%, glycerine 3%, defoamer 0.05%, water complements to 100%.
Gamma cyhalothrin above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, decis, sumicidin, cyfluthrin and Biphenthrin.
5% gamma cyhalothrin aqueous emulsion (control sample 6)
Each constituent mass percentage in formula: the former medicine of 95% gamma cyhalothrin: 5%, dimethylbenzene 10%, alkylphenol polyoxyethylene 3%, nonyl phenol polyethenoxy ether phosphate 2%, glycerine 3%, defoamer 0.05%, water complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt high performance liquid chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of gamma cyhalothrin measure, and calculate its resolution ratio, measurement result is in table 21, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 21 5% gamma cyhalothrin aqueous emulsion
。Above-mentioned result of the test shows, sample 6 namely with dimethyl carbonate 5%, the dicyandiamide solution of white oil 5%, the sample that it is solvent that the ageing stability of sample 6 is better than with dimethylbenzene 10%.
All other technical indicators of table 22 sample 6
。
Table 23 solvent samples 6 and white oil, dimethyl carbonate, dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 6 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.The 5% gamma cyhalothrin aqueous emulsion using solvent samples 6 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 6 same amount situation, namely add 10% white oil in formula due to cannot lytic activity component, 5% gamma cyhalothrin aqueous emulsion cannot be prepared.
5% gamma cyhalothrin aqueous emulsion (control sample 6) carries out biologically active drug effect with 5% gamma cyhalothrin aqueous emulsion (sample 6) and compares, test period in June, 2012, test site: Anxi County suburb, Fujian, active ingredient usage amount: 27g/ hectare, occupation mode: be watered spraying, controlling object: tea tree-tea lesser leafhopper, result of the test is as following table 24.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 24 5% gamma cyhalothrin aqueous emulsion (control sample 6) compares with 5% gamma cyhalothrin aqueous emulsion (sample 6) pharmacodynamic results
。
As can be seen from the above table, sample 6 prevent and treat tea tree-tea lesser leafhopper than control sample 6 effect better or quite.
Above-mentioned table 21 ~ 24 show, the 5% gamma cyhalothrin aqueous emulsion that in implementation column 6, solvent-applied sample 6 is prepared and other chrysanthemum ester class aqueous emulsion ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 6 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.The 5% gamma cyhalothrin aqueous emulsion that biological activity determination display solvent samples 6 and dimethylbenzene are prepared prevents and treats tea tree-tea lesser leafhopper drug effect quite or better.In sum, solvent samples 6 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 7:
Solvent samples 7: take dimethyl carbonate 52kg, white oil 48kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
10% cypermethrin microemulsion (sample 7)
Each constituent mass percentage in formula: 95% cypermethrin technical material: 10%, solvent samples 25%(is equivalent to add dimethyl carbonate 13% in the product, white oil 12%), fatty alcohol-polyoxyethylene ether 6%, dodecyl benzoic acid calcium 4%, castor oil polyoxyethylene ether 5%, isopropyl alcohol 3%, defoamer 0.05%, water complement to 100%.
Cypermethrin above in example also can be replaced the formulation products of beta-cypermethrin, gamma cyhalothrin, decis, sumicidin, cyfluthrin and Biphenthrin.
10% cypermethrin microemulsion (control sample 7)
Each constituent mass percentage in formula: 95% cypermethrin technical material: 10%, dimethylbenzene 25%(is equivalent to add dimethyl carbonate 13% in the product, white oil 12%), fatty alcohol-polyoxyethylene ether 6%, dodecyl benzoic acid calcium 4%, castor oil polyoxyethylene ether 5%, isopropyl alcohol 3%, defoamer 0.05%, water complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.Adopt gas chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of cypermethrin measure, and calculate its resolution ratio, measurement result is in table 25, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 25 10% cypermethrin microemulsion
。
Above-mentioned result of the test shows, sample 7 is namely with dimethyl carbonate 13%, and white oil 12% is dicyandiamide solution, the sample that it is solvent that the ageing stability of sample 7 is better than with dimethylbenzene 25%.
All other technical indicators of table 26 sample 7
Table 27 solvent samples 7 and white oil, dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 7 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.The 10% cypermethrin microemulsion using solvent samples 7 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 7 same amount situation, namely add 25% white oil in formula due to cannot lytic activity component, 10% cypermethrin microemulsion cannot be prepared.
10% aqueous emulsion of cypermethrin (control sample 7) carries out biologically active drug effect with 10% aqueous emulsion of cypermethrin (sample 7) and compares, test period in June, 2012, test site: Guiping County, Guigang, Guangxi, active ingredient usage amount: 50g/ hectare, occupation mode: be watered spraying, controlling object: wild cabbage-cabbage caterpillar, result of the test is as following table 28.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 28 10% aqueous emulsion of cypermethrin (control sample 7) compares with 10% aqueous emulsion of cypermethrin (sample 7) drug effect
。
As can be seen from the above table, sample 7 prevent and treat wild cabbage-cabbage caterpillar than control sample 7 effect better or quite.
Above-mentioned table 25 ~ 28 show, 10% aqueous emulsion of cypermethrin that in implementation column 7, solvent-applied sample 7 is prepared and other chrysanthemum ester class aqueous emulsion ageing stabilities are better than the sample of dimethylbenzene and dimethyl carbonate preparation, solvent samples 7 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.10% aqueous emulsion of cypermethrin that biological activity determination display solvent samples 7 and dimethylbenzene are prepared prevents and treats wild cabbage-cabbage caterpillar drug effect quite or better.In sum, solvent samples 7 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 8:
Solvent samples 8: take dimethyl carbonate 60kg, white oil 40kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
4.5% r (sample 8)
Each constituent mass percentage in formula: the former medicine of 95% beta-cypermethrin: 4.5%, solvent samples 50%(is equivalent to add dimethyl carbonate 30% in the product, white oil 20%), fatty alcohol-polyoxyethylene ether 5%, calcium dodecyl benzene sulfonate 5%, methyl oleate supply.
Beta-cypermethrin above in example also can be replaced the formulation products of cyfluthrin, gamma cyhalothrin, decis, sumicidin and Biphenthrin.
4.5% r (control sample 8)
Each constituent mass percentage in formula: the former medicine of 95% beta-cypermethrin: 4.5%, dimethylbenzene 50%, fatty alcohol-polyoxyethylene ether 5%, calcium dodecyl benzene sulfonate 5%, methyl alcohol are supplied.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.With reference to rower HG3631-1999 adopt high performance liquid chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of beta-cypermethrin measure, and calculate its resolution ratio, measurement result is in table 29, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 29 4.5% r
。
Above-mentioned result of the test shows, sample 8 namely with dimethyl carbonate 30%, the dicyandiamide solution of white oil 20%, the sample that it is solvent that the ageing stability of sample 8 is better than with dimethylbenzene 50%.
All other technical indicators of table 30 sample 8
。
Table 31 sample 8 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 8 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.4.5% r using solvent samples 8 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 8 same amount situation, namely add 50% white oil in formula due to cannot lytic activity component, 4.5% r cannot be prepared.
4.5% r (control sample 8) and 4.5% r (sample 8) carry out biologically active drug effect and compare, test period in June, 2012, test site: Yunnan Province's mountain of papers, active ingredient usage amount: 20g/hectare, occupation mode: be watered spraying, controlling object: tobacco-oriental tobacco budworm, result of the test is as following table.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 32 4.5% r (control sample 8) and 4.5% r (sample 8) drug effect compare
。
As can be seen from the above table, sample 8 prevent and treat tobacco-oriental tobacco budworm than control sample 8 effect better or quite.
Above-mentioned table 29 ~ 32 show, 4.5% r that in implementation column 8, solvent-applied sample 8 is prepared and other chrysanthemum ester class missible oil ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 8 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.4.5% r that biological activity determination display solvent samples 8 and dimethylbenzene are prepared prevents and treats tobacco-oriental tobacco budworm drug effect quite or better.In sum, solvent samples 8 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class missible oil be feasible, and its solvent cost is low, and toxicity is low.
Embodiment 9:
Solvent samples 9: take dimethyl carbonate 75kg, white oil 25kg respectively, then stirs and obtains the solvent compositions that 100kg originally executes example.
2.5% efficient cyhalothrin emulsifiable concentrate (sample 9)
Each constituent mass percentage in formula: the former medicine of 95% gamma cyhalothrin: 2.5%, solvent samples 80%(is equivalent to add dimethyl carbonate 60% in the product, white oil 20%), polyoxyethylene nonylphenol ether 5%, calcium dodecyl benzene sulfonate 3%, methyl oleate complement to 100%.
Gamma cyhalothrin above in example also can be replaced the formulation products of beta-cypermethrin, cypermethrin, cyfluthrin, decis, sumicidin and cyfluthrin.
2.5% efficient cyhalothrin emulsifiable concentrate (control sample 9)
Each constituent mass percentage in formula: the former medicine of 95% gamma cyhalothrin: 2.5%, dimethylbenzene 80%, polyoxyethylene nonylphenol ether 5%, calcium dodecyl benzene sulfonate 3%, methyl alcohol complement to 100%.
Above sample, carries out storing front assay, the test of normal temperature ageing stability and heating storage simultaneously, heat storage sample in an oven design temperature be 54 ± 2 DEG C place 14 days, normal temperature sample places 12,18 and 24 months respectively.With high performance liquid chromatography to the normal temperature of sample, heat storage sample and Different periods before storage through time store sample in the content of gamma cyhalothrin measure, and calculate its resolution ratio, measurement result is in table 33, and the test data in table all gets more than 10 times result of the test mean values.
The stability test result of active component in table 33 2.5% efficient cyhalothrin emulsifiable concentrate
。
Above-mentioned result of the test shows, sample 9 namely with dimethyl carbonate 60%, the dicyandiamide solution of white oil 20%, the sample that it is solvent that the ageing stability of sample 9 is better than with dimethylbenzene 80%.
All other technical indicators of table 34 sample 9
。
Table 35 solvent samples 9 and white oil, dimethyl carbonate and dimethylbenzene to pyrethrin pesticide solvability and stability test thereof to Comparative result.
。
In table, "-" indicates without test data.
Upper table data show, solvent samples 9 has good dissolubility to each quasi-chrysanthemum ester class active component, and lytic activity component ability is suitable with dimethylbenzene, is better than dimethyl carbonate.2.5% efficient cyhalothrin emulsifiable concentrate using solvent samples 9 to prepare and be better than dimethylbenzene or the dimethyl carbonate sample as solvent with content chrysanthemum ester class aqueous emulsion stability, and alone white oil due to solubility property poor, with in solvent samples 9 same amount situation, namely add 80% white oil in formula due to cannot lytic activity component, 2.5% efficient cyhalothrin emulsifiable concentrate cannot be prepared.
2.5% efficient cyhalothrin emulsifiable concentrate (control sample 9) carries out biologically active drug effect with 2.5% efficient cyhalothrin emulsifiable concentrate (sample 9) and compares, test period in August, 2012, test site: farmland, Xin Xu town, high and new technology industrial development zone, Nanning, active ingredient usage amount: 9.4g/ hectare, occupation mode: be watered spraying, controlling object: wild cabbage-cabbage caterpillar, result of the test is as following table.
The computing formula of control efficiency: insect population number × 100 before Revision insect recluced rate (%)=(before medicine after insect population number-medicine insect population number)/medicine.
Preventive effect (%)=(chemicals treatment district Revision insect recluced rate-blank district Revision insect recluced rate)/(100-blank district Revision insect recluced rate) × 100.
Table 36 2.5% efficient cyhalothrin emulsifiable concentrate (control sample 9) compares with 2.5% efficient cyhalothrin emulsifiable concentrate (sample 9) drug effect
。
As can be seen from the above table, sample 9 prevent and treat cabbage pieris than control sample 9 effect better or quite.
Above-mentioned table 33 ~ 36 show, 2.5% efficient cyhalothrin emulsifiable concentrate that in implementation column 9, solvent-applied sample 9 is prepared and other chrysanthemum ester class missible oil ageing stabilities are better than the sample of dimethylbenzene or dimethyl carbonate preparation, solvent samples 9 dissolves chrysanthemum ester class ability and dimethylbenzene is equal to or slightly better, and is better than dimethyl carbonate and white oil.2.5% efficient cyhalothrin emulsifiable concentrate that biological activity determination display solvent samples 9 and dimethylbenzene are prepared prevents and treats wild cabbage-cabbage caterpillar drug effect quite or better.In sum, solvent samples 9 substitutes dimethylbenzene, and to be applied to chrysanthemum ester class aqueous emulsion be feasible, and its solvent cost is low, and toxicity is low.
In sum, dimethyl carbonate and white oil Combination application very good in pyrethrin pesticide liquor preparation effect, solvability and dimethylbenzene, dimethyl carbonate, white oil are alone will well or quite, and chrysanthemum ester class active component good stability in this mixed solvent system, solvent cost is low, toxicity is low, product safety, little to environmental influence.The development trend of to be current alternative methyl alcohol, dimethylbenzene and DMF the be solvent of conventional pesticide preparation.
Claims (6)
1., for an environmental protection mixed solvent for pyrethrin pesticide preparation, it is characterized in that being made up of dimethyl carbonate and white oil, wherein shared by each component, the mass percent of preparation total amount is: dimethyl carbonate 10-60%; White oil 5-40%; Described chrysanthemum ester class is cypermethrin, beta-cypermethrin, decis, sumicidin, cyfluthrin or Biphenthrin; The formulation of described pesticidal preparations is missible oil, aqueous emulsion and microemulsion.
2. as described in claim 1 for the environmental protection mixed solvent of pyrethrin pesticide preparation, it is characterized in that the preferred mass percentage of dimethyl carbonate and white oil is: dimethyl carbonate 10-40%; White oil 5-30%.
3., for an environmental protection mixed solvent for pyrethrin pesticide preparation, it is characterized in that being made up of dimethyl carbonate and white oil, wherein shared by each component, the mass percent of preparation total amount is: dimethyl carbonate 0.5%, white oil 9.5%; Or dimethyl carbonate 10%, white oil 40%; Or dimethyl carbonate 20%, white oil 30%; Or dimethyl carbonate 40%, white oil 27%; Or dimethyl carbonate 9.5%, white oil 0.5%; Or dimethyl carbonate 5%, white oil 5%; Or dimethyl carbonate 13%, white oil 12%; Or dimethyl carbonate 30%, white oil 20%; Or dimethyl carbonate 60%, white oil 20%; Described chrysanthemum ester class is cypermethrin, beta-cypermethrin, decis, sumicidin, cyfluthrin or Biphenthrin; The formulation of described pesticidal preparations is missible oil, aqueous emulsion and microemulsion.
4. a using method for environmental protection mixed solvent described in any one of claim 1-3, is characterized in that: the environmental protection mixed solvent being used for pyrethrin pesticide preparation by described and pesticide activity component, emulsifying dispersant are uniformly mixed;
Described pesticide activity component be selected from cypermethrin, beta-cypermethrin, decis, sumicidin, cyfluthrin or Biphenthrin any one;
Described emulsifying dispersant is selected from one or more in fatty alcohol-polyoxyethylene ether, polycarboxylate, alkylaryl polyoxyethylene polyoxypropylene ether, nonyl phenol polyethenoxy ether, nonyl phenol polyethenoxy ether phosphate, calcium dodecyl benzene sulfonate, phenethyl phenol polyethenoxy sodium sulphate, alkylphenol polyoxyethylene.
5. the pyrethrin pesticide preparation for preparing of using method as claimed in claim 4, chrysanthemum ester class be selected from cypermethrin, beta-cypermethrin, decis, sumicidin, cyfluthrin or Biphenthrin any one; Described pyrethrin pesticide preparation, its formulation is missible oil, aqueous emulsion and microemulsion.
6. the application in pyrethrin pesticide preparation prepared by the mixed solvent as described in any one of claim 1-3.
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