AU2012392861B2 - Jatropha curcas-derived pesticide solvent, and preparation method and application thereof - Google Patents

Abstract

The present invention relates to a jatropha curcas-derived pesticide solvent, and a preparation method and application thereof. The pesticide solvent comprises mixed fatty acyl amide formed by amide shown in a structural formula (1) and/or a structural formula (2). In the formulas, R is selected from linear alkyl or linear alkylene of C

Description

JATROPHA CURCAS-DERIVED PESTICIDE SOLVENT, PREPARATION METHOD AND APPLICATION THEREOF 5 Technical Field [0001] The present invention relates to pesticide technical field and, more particularly to a j atropha curcas-derived pesticide solvent, a preparation method and an application thereof Background [0002] There is a great gap in research and development level of China's pesticide 10 preparations compared with developed countries, mainly manifested as backward research level of solvents and cosolvents for pesticides. The most serious problem is especially solvents for pesticide. Non-environmentally friendly additives and solvents for pesticide with highly toxicity such as benzene and dimethyl benzene which have been banned in develop countries are still widely used. Such a traditional emulsion formulation with a high 15 toxic, poor security and environmental protection light aromatic solvent as a matrix still possesses a proportion as high as 50%, and is consumed about one million tons every year. Approximate three to 300, 000 to 400,000 tons of benzene solvents each year are brought into the environment along with the use of these emulsions. In 2010, about 1.35 million tons of pesticides are produced in China, exported 610,000 tons, imported 50, 000 tons, and 20 domestically consumed about 790,000 tons. The consumption of solvents is about 300,000 tons and the vast majority of solvents is high volatile aromatic hydrocarbons, for example, light aromatic hydrocarbons like dimethyl benzene, toluene, and benzene, and some polar solvents like methanol, N, N-dimethyl formamide are used as cosolvents. [0003] These solvents and cosolvents have potential hazard on production safety, 25 personal health and ecological environment. Some of them have a clear teratogenic and carcinogenesis effect, and have a potential harm to health of pesticide producers and users. Some belong to low flash point solvents, are flammable and explosive, and have poor security for producing, storage and transportation. In addition, light aromatic hydrocarbons 1 solvent and methanol belong to high volatile organic compounds (VOC) and will pollute the atmospheric environment during manufacturing and after spraying pesticides. Since methanol and N, N-dimethyl formamide are miscible with water, water source will be readily polluted after use. 5 [0004] Development of environmentally friendly pesticide preparations is an urgent and significant issue in the current pesticide industry. Gradually reduction of emulsion products and replacement of the light aromatic hydrocarbon solvents in the pesticide formulations are one of the main orientations to national industrial planning and industry policy in recent years. In the 11th and 12th five-year plan for Science and Technology Development, special 10 projects on research of environmental protection pesticide solvents and matching additives are proposed. For pesticide research and production in China, it is urgent to be solved about how to transform traditional pesticide products and make it conform to the requirements of environmental protection in the new period. [0005] The harm from traditional pesticide solvents has been recognized by more and 15 more people and new alternative solvent species emerge in endlessly with various kinds. In summary, industrialization prospect substitutions for traditional non-environmentally friendly solvents include the following types: solvent oils (S-100, S-150, S-200, Exxon Mobil Solvesso series, etc.); synthetic green solvents (dimethyl carboxylate, carbonate, amide, etc.); plant-derived green solvents (vegetable oil, hydrogenated esterification modified vegetable 20 oil, etc.). The solvent oil is derived from petroleum chemical industry and belongs to aromatic hydrocarbons with substituent group or polycyclic aromatic hydrocarbons. Such a solvent generally has a high flash point and a good solubility for pesticide. However, it has a slow degradation and brings out a certain ecological risk. The synthetic green solvent possesses superior performance on various aspects, but the synthetic cost is higher and the 25 domestic usage is limited. The plant-derived green solvent is high-profile because it is derived from plants, is friendly to environment and is easy degradation. At the beginning of the development of vegetable oil solvent, species of vegetable oil are mainly concentrated in soybean oil, peanut oil, corn oil, cottonseed oil, etc. In recent years, these vegetable oils are increasingly replaced by rosin oils which do not need to be cultivated because the vegetable 30 oils have the shortages of contending for food from people and high price. 2 [0006] For instance, in 2008, Liu. (Shandong Agricultural University) took 2.5% X Cyhalothrin as an example to do a research on a preparation of a micro-emulsion using biodiesel as a pesticide solvent for replacing traditional solvent. It is shown that biodiesel as pesticide solvent has higher solubility in pyrethroid pesticides and the likes. The micro 5 emulsion using biodiesel as solvent has little difference from those with traditional solvent in various performance indicators. [0007] At present, the jatropha curcas oil is mainly used in the manufacture of biodiesel. A major ingredient of the jatropha curcas oil is fatty acid glyceride (i.e., fat), which has a poor solubility for pesticides and is less directly used as pesticide solvents. It is usually 10 subjected to an ester exchange with methanol to form a mixed fatty acid methyl ester. Although the j atropha oil methyl ester as the pesticide solvent has a good solubility and penetration for the majority of pesticides, this modified solvent has a limited action to the promotion of solubility of the jatropha oil. Compared with the traditional light aromatic hydrocarbon solvents (e.g., xylene), the solubility of the jatropha oil methyl ester for 15 different pesticides is varied and it cannot meet the demand of preparation process of some pesticides (e.g., carbosulfan, diafenthiuron, profenofos, triazophos, etc.). For example, in some pesticide solvents derived from j atropha curcas, certain amount of polar solvent (e.g., isopropanol, glycol, N-methyl pyrrolidone, N-octyl methyl pyrrolidone, azone, etc.) as a cosolvent is added into the jatropha oil methyl ester to improve its solubility. Further, 20 stability of the jatropha oil methyl ester at a low temperature is unsatisfactory because it starts to coagulate in 0 'C and is entirely condensed to be solid in -5 'C without an existence of other cosolvents or anticoagulants. It cannot meet the demand of pesticide preparation process under low temperature conditions. SUMMARY OF THE INVENTION 25 [0008] Therefore, a jatropha curcas-derived pesticide solvent is provided, which is environmental protection and has a significant stability and solubility for pesticide. A preparation and an application of a jatropha curcas-derived pesticide solvent are also provided. 3 [0009] A jatropha curcas-derived pesticide solvent, which comprises mixed fatty acyl amide formed by amide shown in a structural formula (1) and/or a structural formula (2): [0010] R-CO-N(R 1

R

2 ) ...... (1); [0011] R-CO-N-X.............(2); 5 [0012] wherein R is selected from linear alkyl or linear alkylene of C 11 to C 19 , R 1 and R 2 are selected from linear alkyl of C 1 to C 6 , -N-X is an N-heterocycle structure with the carbon number of 4 or 5, and R-CO- is derived from jatropha curcas. [0013] A preparation method of a jatropha curcas-derived pesticide solvent is provided, which is that a raw material and a secondary amine are subjected to aminolysis at one step or 10 a plurality of steps to form a mixed fatty acyl amide, thereby obtaining the pesticide solvent, and the raw material is the jatropha curcas crude oil or fatty acid ester of the jatropha curcas. [0014] The above-described jatropha curcas-derived pesticide solvent is used as a pesticide preparation or a pesticide tank mixture adjuvant. [0015] The above-described jatropha curcas-derived pesticide solvent uses the mixed 15 fatty acyl amide, which has a greatly improved solubility for various pesticides as compared with mixed fatty acid methyl ester, as shown by experiments. The solubility of the mixed fatty acyl amide is substantially equivalent to that of the traditional light aromatic solvent. The solubility of the pesticide solvent for certain types of pesticides is far higher than that of dimethylbenzene, and the pesticide solvent has a higher stability. The pesticide solvent is 20 substantially able to become a substitution for organic solvents like light aromatic solvents and is applicable to various pesticide preparations, for example, emulsifiable concentrate, oil miscible liquid, oil miscible flowable concentrate, micro-emulsion, emulsion oil in water, ultra low volume concentrate, etc. In addition, the pesticide solvent is suitable for cooperating with a variety of pesticide ingredients such as insecticides, fungicides, herbicides 25 or plant growth regulators, etc. BRIEF DESCRIPTION OF THE DRAWINGS 4 [0016] FIG. 1 illustrates an amide shown in a structural formula (1) of a jatropha curcas derived pesticide solvent according to an embodiment of the present invention; and [0017] FIG. 2 illustrates an amide shown in a structural formula (2) of ajatropha curcas derived pesticide solvent according to another embodiment of the present invention. 5 DETAILED DESCRIPTION OF THE INVENTION [0018] The present invention will be explained below in detail with reference to the embodiment(s). [0019] In accordance with an embodiment of the present invention, a jatropha curcas derived pesticide solvent is provided, which comprises mixed fatty acyl amide formed by 10 amide shown in a structural formula (1) and/or a structural formula (2): [0020] R-CO-N(RIR 2 ) ...... (1); [0021] R-CO-N-X.............(2); [0022] wherein R is selected from linear alkyl or linear alkylene of C 11 to C 19 , R 1 and R 2 are selected from linear alkyl of C 1 to C 6 , -N-X is an N-heterocycle structure with the carbon 15 number of 4 or 5, and R-CO- is derived from jatropha curcas. The specific forms of the structural formula (1) and/or the structural formula (2) are shown in FIGS. 1 and 2. [0023] The content of the fatty acyl amide in the pesticide solvent is at least 90% by weight, preferably at least 97%. R 1 and R 2 are preferably selected from methyl or ethyl, or other linear alkyl with carbon chain shorter than C 6 . The N-heterocycle is preferably pyrrol, 20 pyrrolidine or piperidine. In the j atropha curcas oil (Jatropha curcas Linn.), components with carbon chain between C 14 to Cis have a much higher content and components with carbon chain shorter than C 14 have a relatively less content. However, the acyl amide with carbon chain shorter than C 14 have an excellent effect and the mixed fatty acyl amides with carbon chain between C 12 to C 20 (containing carbonyl) are preferably used as the pesticide 25 solvents, in accordance with the embodiment of the present invention. The mixed fatty acyl amide mainly refers to a mixture comprising different fatty acyl amides with carbon chains 5 from C 12 to C 2 0 (containing carbonyl). In addition, the acyl amide shown in structural formula (1) appears brown or light brown liquid in normal status. The acyl amide shown in structural formula (1) appears solid in general status and is generally mixed with other liquid solvents to form a mixed solvent in use. 5 [0024] The mixed fatty acyl amide is preferably formed of a secondary amine and one of a j atropha curcas crude oil and fatty acid ester of the j atropha curcas by an aminolysis reaction. The secondary amine is preferably one of or a mixture of two or more of dimethylamine, diethylamine, ethyl methylamine, pyrrole, pyrrolidine and piperidine. As shown in below experiments, the mixed fatty acyl amide which is synthesized by a secondary 10 amine and one of a j atropha curcas crude oil and fatty acid ester of the j atropha curcas is more effective. [0025] In accordance with another embodiment of the present invention, a preparation method of the jatropha curcas-derived pesticide solvent is provided, which utilizes the j atropha curcas crude oil or fatty acid ester of the j atropha curcas as the raw material and 15 subjects the raw material and the secondary amine to an aminolysis at one step or a plurality of steps to form a mixed fatty acyl amide, thereby obtaining the pesticide solvent. The j atropha curcas crude oil refers to crude and natural j atropha curcas oil. The content of the fatty acyl amide is preferably at least 90% by weight, more preferably at least 97%. [0026] As described above, the raw oil material of the j atropha curcas is derived from the 20 jatropha curcas crude oil or the fatty acid ester of the jatropha curcas. Wherein, the fatty acid ester of the j atropha curcas is more preferably a j atropha oil methyl ester and the secondary amine is preferably one of or a mixture of two or more of dimethylamine, diethylamine, ethyl methylamine, pyrrole, pyrrolidine and piperidine. When the jatropha curcas crude oil is used as the raw oil material, the pesticide solvent is formed of the raw oil material and the 25 secondary amine by the aminolysis reaction at a plurality of steps, hereinafter referred to as a multiple steps aminolysis method. When the jatropha curcas crude oil or the fatty acid ester of the jatropha curcas are used as the raw oil material, the pesticide solvent is formed of the raw oil material and the secondary amine by the aminolysis reaction at one step, hereinafter 6 referred to as a one-step aminolysis method. They will be described below in detail respectively. [0027] The multiple steps aminolysis method includes the following steps: utilizing the jatropha curcas crude oil as the raw material, hydrolyzing the raw material with an alkaline 5 action and acidizing the hydrolysate to obtain mixed fatty acid, subjecting the mixed fatty acid to an acyl chlorination reaction to obtain mixed fatty acyl chloride, and subjecting the mixed fatty acyl chloride and the secondary amine to an aminolysis reaction, thereby obtaining the desired mixed fatty acyl amide. Wherein, the alkaline is preferably sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, and so on. The 10 acidulation usefully uses inorganic acids, for example hydrochloric acid, or organic acids. The Acyl chlorination process usefully uses acyl chlorination reagents like phosphorus trichloride, thionyl sulfoxide, etc. [0028] In particular, during the hydrolyzing process with the alkaline action, it is benefit that a heating and stirring way is used, for example at 95'C, amount of alkaline is about 2 -10% 15 by weight, concentrate of the alkaline is 4% by weight, the hydrolyzing time is one to four hours, for example 1.5 hours, and ratio of oil to water is adjusted to be 1/4 by weight, wherein the oil is the jatropha curcas oil, the water refers to an alkaline solution. After hydrolyzing process for predetermined time, the hydrolysate is suction filtered, washing separately with water and plenty of 1% hydrochloric acid solution to form a white paste, 20 drying for standby, thereby synthesizing the desired mixed fatty acid by the acidification. [0029] The synthesized mixed fatty acid by the acidification is mixed with an acyl chlorination reagent like the phosphorus trichloride and a ratio of the mixed fatty acid and the phosphorus trichloride is maintained to be between 3:1 and 1:1, preferably 1.32:1 (mol). The acyl chlorination reaction is conducted on a heating reflux condition for predetermined time, 25 preferably 2 to 4 hours, and then let the resultant stand, removing phosphorous acid at lower layer to obtain mixed fatty acyl chloride. [0030] The aminolysis process is described as follows: adding the mixed fatty acyl chloride to the secondary amine at below zero temperature and heating them for predetermined time, performing a suction filtration and sequentially a rotary evaporation to 7 remove low boiling point substances, thereby obtaining a brown mixed fatty acyl amide. Wherein the secondary amine is dissolved in an ethyl acetate solution and the like and a molar ratio of thejatropha curcas crude oil to the secondary amine is ranged from 1:3.5 to 1:3, preferably 1:3.2. 5 [0031] One-step aminolysis method includes the following steps: selecting the jatropha curcas crude oil or the fatty acid ester of the j atropha curcas as a raw material, and subjecting the secondary amine and one of the j atropha curcas crude oil and the fatty acid ester of the jatropha curcas to an aminolysis reaction in the presence of a catalyst, thereby obtaining the desired mixed fatty acyl amide. Wherein the catalyst is preferably strong alkaline alkoxide, 10 for example, sodium methoxide or potassium methoxide. The secondary amine is preferably one of or a mixture of two or more of dimethylamine, diethylamine, ethyl methylamine, pyrrole, pyrrolidine and piperidine. One-step aminolysis method is to subject the secondary amine and one of the j atropha curcas crude oil and the fatty acid ester of the j atropha curcas to the aminolysis reaction at one step on a condition of room temperature and atmospheric 15 pressure (or certain pressure) to directly obtain the mixed fatty acyl amide. When the fatty acid ester of the j atropha curcas are used as the raw oil material, a molar ratio of the fatty acid ester of the jatropha curcas (e.g., jatropha oil methyl ester) to the secondary amine is ranged from 1:15 to 1:3, preferably 1:10. When the jatropha curcas crude oil is used as the raw oil material, a molar ratio of the jatropha curcas crude oil to the secondary amine is 20 ranged from 1:30 to 1:15, preferably 1:20. [0032] The resultants of the two methods are purified by performing the suction filtration and sequentially the rotary evaporation to remove low boiling point substances. The purified resultant has a total yield of more than 85%, an amide content of at least 90%, preferably at least 97%. 25 [0033] Furthermore, it is to be understood that the implication of the solvent in the present pesticide solvents includes the ordinary meaning of solvent have a primary dissolution action, also can be used as a cosolvent, cooperating with other solvent composition to play a dissolution action or an auxiliary dissolution action. 8 [0034] The pesticide solvent of the embodiment of the present invention is used as a pesticide preparation or a pesticide tank mixture adjuvant. As the pesticide preparation, it comprises the above-described pesticide solvent and a surfactant with a percentage content of 1-20% by weight (proportion of surfactant in the total pesticide preparation). The pesticide 5 solvent preferably has a percentage content of 4-95% by weight. The surfactant is one or more of agricultural surfactants or daily surfactants, preferably fatty alcohol-polyoxyethylene ether, EO/PO block copolymer or its phosphate, polyoxyethylene castor oil, tween, alkyl sulfonate. These surfactants have a relatively superior effect. The style of the pesticide preparation includes but not limited to be emulsifiable concentrate, oil miscible liquid, oil 10 miscible flowable concentrate, micro-emulsion, emulsion oil in water, ultra low volume concentrate, etc. [0035] The pesticide preparation is used by above-mentioned means wherein the pesticide solvent is applied together with the surfactant. Alternatively, the pesticide solvent could be cooperated with other additives or ingredients in use, for example but not limited as 15 an auxiliary application together with mixed fatty acid methyl ester of the j atropha curcas. The style of the pesticide preparation includes but not limited to be emulsifiable concentrate, oil miscible liquid, oil miscible flowable concentrate, micro-emulsion, emulsion oil in water, ultra low volume concentrate, etc. In addition, the above-mentioned pesticide preparation generally refers to a pesticide processing product containing pesticide effective ingredients. 20 The pesticide tank mixture adjuvant generally refers to a spraying additive which does not contain pesticide effective ingredients and is mixed with the pesticide preparation in a spraying barrel or a dispensing barrel to modify or improve effect of the pesticide, sometime referred to as a spraying assistant. [0036] As for the pesticide tank mixture adjuvant, the pesticide solvent is preferably 25 formed as the spraying assistant. The formed spraying assistant is mixed with a pesticide preparation in a barrel to use, for improving mutual dissolution and uniform mixing among different ingredients. The barrel mixing is generally a kind means for mixing and applying the pesticides. Namely, single agent for the barrel mixing is prepared from pesticide preparation manufactory, and then during field application, according to the barrel mixing 30 means and label description, two or more different pesticides are dispensed and mixed by 9 hand or by a mechanical operator, or are directly formed into mixed pesticide solution in a storage tank of a pesticide spraying tractor. [0037] The pesticide solvent, the preparation and the application thereof are illustrated as below by particular examples, and its effect is observed by taking corresponding application 5 experiments. [0038] Example 1 [0039] 180 g of jatrophacurcas crude oil is provided and added into a reactor, and then is heated to 95 'C whilst stirring. 4wt% NaOH aqueous is added and a weight ratio of oil to water is regulated to be 1/4. After the reaction for 1.5 hours,a suction filtration is performed 10 and sequentially washing separately in water and plenty of 1% of hydrochloric acid solution are done to obtain a white paste, namely the mixed fatty acid, drying for stand. [0040] The above mixed fatty acid is added into phosphorus trichloride, wherein a ratio of the mixed fatty acid to the phosphorus trichloride is regulated to be 1.32:1 (mol). They are heated to50 'C, refluxed and reacted for 6 hours. The reactant is standed for 1 hour to remove 15 phosphorous acid at a lower layer to obtain mixed fatty acyl chloride (yield of 95%). The mixed fatty acyl chloride is added into an ethyl acetate solution containing 20 g diethylamine (1.5eq) and 18 g ethylmethylamine at 5 'C. Then, they are heated to 50 'C, and reacted for 2 hours, and are subjected to a suction filtration and sequentially a rotary evaporation to remove the low boiling point substances, thereby obtaining a brown N, N-diethyl mixed fatty 20 acyl amide with a total yield of 85% and an acyl amide content of above 98% (wherein eq refers to as equivalent value of reaction). [0041] Example 2 [0042] 0.03 mol the jatropha oil methyl ester and 0.3 mol diethylamine are added into a three-necked flask with a reflux condensation tube. They are stirred for 5 min at 30 'C, 25 sequentially adding sodium methoxide (0.2eq) into them and then stirring for 1 min. The reaction is kept for 24 h while the temperature is up to 100 'C. A rotary evaporation is performed to remove the low boiling point substances, accompanied by a suction filtration, 10 thereby to obtain a light brown liquid fatty acyl amide with a total yield of 90% and an acyl amide content of above 97%. [0043] Example 3 [0044] 0.03 mol jatropha oil methyl esteris added into a three-necked flask with a reflux 5 condensation tube. They are stirred for 5 min at 30 'C, sequentially adding sodium methoxide (0.1 5eq) into them and then stirring for 1 min. The reaction temperature is kept constantly at 30 'C, and 10 eq gaseous NH(CH 3

)

2 is introduced in 30 min. Then, a rotary evaporation is performed to remove the low boiling point substances, accompanied by a suction filtration, thereby obtaining a light brown liquid fatty acyl amide with a total yield of 10 92 % and an acyl amide content of above 9 8 %. [0045] Example 4 [0046] 0.03 mol jatropha curcas crude oil is added into a three-necked flask with a reflux condensation tube. They are stirred for 5 min at 30 'C, sequentially adding sodium methoxide (0. l5eq) into them and then stirring for 1 min. They are heated to 100 'C and 20 15 eq gaseous NH(CH 3

)

2 is introduced in 30 min. Then, a rotary evaporation is performed to remove the low boiling point substances, accompanied by a suction filtration, thereby to obtain a light brown liquid fatty acyl amide with a total yield of 87% and an acyl amide content of above 92%. [0047] Example 5 20 [0048] The reaction conditions is the same to the Example 1, with exception of 0.6 mol pyrrole (or piperidine) added as a substitution. As such, a solvent mixture of the mixed fatty acid methyl ester and the mixed acyl amide is obtained, with an acyl amide content of about 97%. [0049] Example 6 11 [0050] 1 kgjatropha curcas acyl amide obtained from Example 1 is added into 9 kg jatropha curcas methyl ester and is well stirred, thereby to obtain a solvent mixture with an acyl amide content of about 10%. [0051] Example 7 5 [0052] 0.5 kg jatropha curcas acyl amide obtained from Example 1 is added into 9.5 kg jatropha curcas methyl ester and is well stirred, thereby to obtain a solvent mixture with an acyl amide content of about 5%. [0053] Experiments of stability at a low temperature of the synthesized solvents are conduct. The freezing point of the mixed fatty acyle amide solvents is -10.0 'C and is lower 10 than that of the j atropha oil methyl ester. Freezing points of the solvents in Example s 1 to 7 are respectively -17.7 'C, -17.5 'C, -17.8 'C, -16.8 'C, 9.7 'C, -5.0 'C, -4.2 'C. The freezing point of the jatropha oil methyl ester is ranged from -5.2 'C to 0 'C. [0054] In addition, experiments on the solubility of the pesticide solvent of the embodiment of the present invention in various pesticides are conducted and the results 15 thereof are listed in table 1. It is shown from table 1 that the solubility of the j atropha curcas amide pesticide solvent of the embodiment of the present invention in tested pesticides is substantially equivalent to that of the xylene, and is far higher than the solubility of dimethylbenzene in some certain types of pesticides, for example, triazole tin, emamectin benzoate, avermectin, X-Cyhalothrin, etc. Compared with jatropha oil methyl ester, the 20 solubility of the jatropha curcas amide pesticide solvent (solvent formed in Example 1) in all kinds of pesticides is much higher. The solubility to the pesticides is improved when the jatropha curcas amide pesticide solvent in accordance with a proportion of 5% is added into a fatty acid jatropha oil methyl ester (Example 7). [0055] Table 1 Solubility of different TC pesticides in the jatropha oil methyl ester and 25 the pesticide solvent of the embodiment of the present invention (unit: g/g; 25 'C) Jatropha oil TC pesticide Xylene methl Example 7 Example 1 methyl ester 12 Chlorpyrifos >1.50 2.13 >1.50 >1.50 Lambda- 0.80 1.06 1.28 1.39 cyhalothrin Quizalofop-p-ethyl 0.30 0.14 0.18 0.22 Pyridaben 0.39 0.20 0.26 0.43 Emamectin <0.05 <0.05 0.07 0.24 benzoate Fenbutatin oxide 0.03 <0.05 <0.05 <0.05 Azacyclotin 0.01 <0.05 <0.05 0.50 Beta-cypermethrin 0.30 0.19 0.20 0.22 Biphenthrin 0.80 0.30 0.41 0.50 Difenoconazole 0.40 0.12 0.13 0.17 Avermectin <0.05 - 0.03 0.06 Pendimethalin 1.12 0.30 0.32 0.77 Diafenthiuron 0.20 <0.05 0.11 0.17 Fenpropathrin 0.66 0.33 0.33 0.38 Tebuconazole 0.12 - 0.06 0.13 [0056] Example s for application of the j atropha curcas amide pesticide solvent of the embodiment of the present invention as pesticide preparations and pesticide tank mixture adjuvants are described as follows. However, it is no way intended to limit the present invention to these examples. Contents mentioned above refer to weight percentage contents. 5 [0057] Example 8 for application [0058] 525 kg pesticide solvent of the Example 1 is added into a reaction kettle, and then uniformly admixed with 400 kg chlorpyrifos, 15 kg EO/PO block copolymer, 10 kg fatty alcohol polyoxyethylene ether, and 50 kg calcium dodecyl benzene sulfonate, thereby to obtain 1000 kg 40% chlorpyrifos emulsion. 13 [0059] Example 9 for application [0060] 862.5 kg jatropha curcas acyle amide solvent of the Example 5 is added into a reaction kettle, and then uniformly admixed with 45 kg lambda-cyhalothrin, 25 kg EO/PO block copolymer, 47.5 kg calcium alkylbenzene sulfonate, and 20 kg fatty alcohol 5 polyoxyethylene ether, thereby to obtain 1000 kg 4.5% lambda-cyhalothrin emulsion. [0061] Example 10 for application [0062] 902 kg pesticide solvent of the Example 3 is added into a reaction kettle, and uniformly admixed with 18 kg avermectin, 15 kg polyoxyethylene castor oil, 25 kg tween, and 40 kg lauryl sulfate, thereby to obtain 1000 kg 1.8% avermectin emulsion. 10 [0063] Example 11 for application [0064] 75 kg pesticide solvent of the Example 5 is added into a reaction kettle, and then uniformly admixed with 25 kg lambda-cyhalothrin, 125 kg chlorpyrifos, 65 kg EO/PO block copolymer phosphate, 25.5 kg alkyl phenol formaldehyde resin polyoxyethylene ether, 42.5 kg calcium dodecyl benzene sulfonate, and 30 kg isopropanol. The admixed resultant is 15 added into 612 kg water and then is well stirred, accordingly to form 1000 kg 15% lambda cyhalothrin chlorpyrifos micro-emulsion. [0065] Example 12 for application [0066] 885 kg pesticide solvent of the Example 5 is provided, and is added and uniformly admixed with 10 kg emamectin benzoate, 20 kg polyoxyethylene castor oil, 15 kg EO/PO 20 block copolymer, 25 kg fatty alcohol polyoxyethylene ether, and 45 kg calcium dodecyl benzene sulfonate, thereby to obtain 1000 kg 1.0% emamectin benzoate emulsion. [0067] Example 13 for application [0068] 100 kg pesticide solvent of the Example 3 is provided, and then is uniformly admixed with 200 kg propiconazole, 20 kg glycol, 30 kg alkyl phenol formaldehyde resin 25 polyoxyethylene ether, and 20 kg EO/PO block copolymer polyoxyethylene ether. After well mixing, 620 kg water and 10 kg polyvinyl alcohol is added into the mixture and then are 14 mixed well, accompanied by high-speed shear emulsifying at a rotation speed of 5000 revolutions per minute, thereby to obtain 1000 kg 20% propiconazole emulsion, oil in water. [0069] Example 14 for application [0070] 200 kg atrazine, 60 kg gaseous silica, 660 kg jatropha curcas-derived pesticide 5 solvent of Example 7, 30 kg C 12 to C 14 alcohol polyoxyethylene ether, 20 kg sorbitan polyoxyethylene ether, and 30 kg lignosulfonate are added into a grinding kettle to be ground, thereby to obtain 1000 kg 2 0% atrazine oil suspension. [0071] Example 15 for application [0072] 250 kg phoxim, 40 kg glycol, 650 kgjatropha curcas-derived pesticide solvent of 10 Example 7, 50 kg alkyl phenol polyoxyethylene ether, and 10 kg alkyl phenol polyoxyethylene ether phosphate are added into a reaction kettle to be stirred and mutual dissolved, thereby to obtain 1000 kg 25% phoxim oil for ultra low volume concentrate. [0073] Example 16 for application [0074] 850 kgjatropha acyle amide solvent (Example 7), 60 kg C 12 to C 14 alcohol 15 polyoxyethylene ether, 40 kg epoxy propane/epoxy ethane block copolymer, and 50 kg ethoxylated alkyl phosphate are added into a reaction kettle to be well stirred, thereby to obtain 1000 kg pesticide tank mixture adjuvant. [0075] Example 17 for application [0076] 900 kgjatropha acyle amide solvent (Example 7), 30 kg N-octyl pyrrolidone, 20 20 kg C 1 2 to C 14 alcohol polyoxyethylene ether, 20 kg sorbitan polyoxyethylene ether, and 30 kg ethoxylated alkyl phosphate are added into a reaction kettle to be well stirred, thereby to obtain 1000 kg pesticide tank mixture adjuvant. [0077] Comparison Experiments of efficacy [0078] Toxicity measurement of the plutella xylostella and the beet armyworm indoor: 25 selecting identical effective ingredients and emulsifiers, and then separately using the 15 pesticide solvent of the embodiments of the present invention and xylene as a solvent to prepare respective 1.8wt% avermectin emusion, 40wto chlorpyrifos emulsion and 4.5% lambda-cyhalothrin emulsion. Their activities against three-age plutella xylostella larvae and beet armyworm larvae are measured by impregnation method, as shown in table 2 and 5 table 3. It is to be known from table 2 and table 3 that the pesticide solvents of the embodiments of the present invention have a significant synergistic effect for 1.8wt% avermectin emusion, 40wt% chlorpyrifos emulsion and 4.5wt% lambda-cyhalothrin emulsion. [0079] The fatty acid acyle amide in the pesticide solvent of the embodiment of the present invention itself is a kind of penetrating agent, which is well matched with pesticides 10 and is easy for election of surfactants, and has an excellent emulsifying characteristic. [0080] Table 2 Results of insecticidal activity measurement against plutella xylostella on pesticide emulsions containing different solvents Pesticides (Solvents) Selected insect Death in 48 hours Death rate (%) Numbers (individual) (individual) Avermectin (Xylene) 65 45 69.23 Avermectin (Example 10) 66 59 89.39 Chlorpyrifos (Xylene) 65 54 83.07 Chlorpyrifos (Example 8) 66 63 95.45 [0081] Table 3 Results of insecticidal activity measurement against plutella xylostella on 15 4.5% lambda-cyhalothrin pesticide emulsion Tested Agents Concentration of Selected insect Death Numbers Correction loss rate (Solvents) pesticides (mg/L) Numbers (% ) (individual) (individual) 4.5% lambda- 80 30 28 93.33 cyhalothrin pesticide 16 emulsion (Example 9) 4.5% lambda- 20 30 21 70.00 cyhalothrin pesticide emulsion (Example 9) 4.5% lambda- 10 30 15 50.00 cyhalothrin pesticide emulsion (Example 9) 4.5% lambda- 80 30 24 80.00 cyhalothrin pesticide emulsion (Xylene) 4.5% lambda- 20 30 16 53.33 cyhalothrin pesticide emulsion (Xylene) 4.5% lambda- 10 30 9 30.00 cyhalothrin pesticide emulsion (Xylene) Blank Tap water 30 1 [0082] Content of toxic protein in jatropha curcas is relatively higher and the toxic protein extracted has a certain insecticidal and bactericidal effect. Inherent natural active ingredients of the j atropha curcas itself are remained after being prepared to be pesticide 5 products; accordingly, the pesticide solvent of jatropha curcas acyle amide has a certain synergism effect. 17 [0083] Compared with non-environmentally friendly aromatic organic solvents and the likes, the above j atropha curcas-derived pesticide solvent of the embodiment of the present invention have at least the advantages as follows: 1, the jatropha curcas is derived from plant and thus is environmentally friendly, degradable and pollution-free; 2, it has a high flash 5 point (generally higher than 100 'C, that of xylene is 25 'C), is readily prepared, stored and transported in security; 3, it has a good solubility for pesticides and it solubility surpasses aromatic solvents for some certain pesticides. [0084] Compared with traditional vegetable oil solvents, the jatropha curcas-derived pesticide solvent of the embodiment of the present invention have at least the advantages as 10 follows: 1, it is derived from jatropha curcas, which has a great oil output and an extensive material source, is free of contending for food from people and for farmland of food supplies and thus is sustainable regeneration; 2, it has a wide application, suitable for pesticide preparations and tank mixture adjuvant such as emulsifiable concentrate, oil miscible liquid, oil miscible flowable concentrate, micro-emulsion, emulsion oil in water, etc.; 3, its 15 solubility for pesticides has a great improvement as compared with traditional vegetable oil solvent, is substantially equivalent to that of the aromatic solvent, and it has an excellent permeability; 4, its stability is greatly improved since its status can be maintained without solidification phenomenonc at a low temperature when circumstance temperature is lowered to -5 'C, even to -10 'C; 5, it has a synergism effect to pesticides and thereby aids to improve 20 insecticidal and disease prevention effect of active ingredients of the pesticides. [0085] While the invention has been described in terms of several exemplary embodiments, those skilled on the art will recognize that the invention can be practiced with modification within the spirit and scope of the appended claims. In addition, it is noted that, the Applicant's intent is to encompass equivalents of all claim elements, even if amended 25 later during prosecution. 18

Claims (10)

1. A jatropha curcas-derived pesticide solvent, wherein the pesticide solvent comprises mixed fatty acyl amide formed by amide shown in a structural formula (1) and/or a structural 5 formula (2): R-CO-N(RR 2 ) ...... (1); R-CO-N-X.............(2); wherein R is selected from linear alkyl or linear alkylene of C11 to C 19 , R 1 and R 2 are selected from linear alkyl of C1 to C 6 , -N-X is an N-heterocycle structure with the carbon number 10 of 4 or 5, and R-CO- is derived from j atropha curcas.

2. The jatropha curcas-derived pesticide solvent of claim 1, wherein the mixed fatty acyl amide is formed by subjecting a secondary amine and one of a jatropha curcas crude oil and a fatty acid ester of the jatropha curcas to an aminolysis reaction.

3. The jatropha curcas-derived pesticide solvent of claim 1, wherein content of the 15 amide shown in a structural formula (1) and/or a structural formula (2) in the pesticide solvent is at least 90% by weight.

4. The jatropha curcas-derived pesticide solvent of claim 1, wherein content of the amide shown in a structural formula (1) and/or a structural formula (2) in the pesticide solvent is at least 97% by weight. 20

5. The jatropha curcas-derived pesticide solvent of claim 1, wherein the R1 and R 2 are selected from methyl or ethyl, the N-heterocycle is pyrrol, pyrrolidine or piperidine.

6. A preparation method of the jatropha curcas-derived pesticide solvent of any of claims 1 to 5, wherein the preparation method is that a raw material and a secondary amine are subjected to an aminolysis at one step or a plurality of steps to form a mixed fatty acyl amide, 25 thereby to obtain the pesticide solvent, and the raw material is the jatropha curcas crude oil or fatty acid ester of the jatropha curcas.

7. The preparation method of the jatropha curcas-derived pesticide solvent of claim 6, wherein the aminolysis at a plurality of steps comprises the following steps: hydrolyzing the raw material of the j atropha curcas crude oil with an alkaline action and acidizing the hydrolysate to 30 obtain a mixed fatty acid, subjecting the mixed fatty acid to an acyl chlorination reaction to 19 obtain mixed fatty acyl chloride, and subjecting the mixed fatty acyl chloride and the secondary amine to an aminolysis reaction, thereby to obtain the desired the mixed fatty acyl amide.

8. The preparation method of the jatropha curcas-derived pesticide solvent of claim 6, wherein the aminolysis at one step comprises the following steps: selecting the jatropha curcas 5 crude oil or the fatty acid ester of the jatropha curcas as a raw material, subjecting the raw material and the secondary amine to an aminolysis reaction in the presence of a catalyst, thereby to obtain the desired mixed fatty acyl amide.

9. The preparation method of the jatropha curcas-derived pesticide solvent of claim 6, wherein a molar ratio of the jatropha curcas crude oil to the secondary amine is from 1:3.5 to 1:3 10 in the aminolysis at a plurality of steps, a molar ratio of the fatty acid ester of the j atropha curcas as the raw material to the secondary amine is from 1:1.5 to 1:3 or a molar ratio of the jatropha curcas crude oil as the raw material to the secondary amine is from 1:30 to 1:15 in the aminolysis at one step.

10. The jatropha curcas-derived pesticide solvent according to any of claims 1 to 5 is 15 used as a pesticide preparation or a pesticide tank mixture adjuvant. 20