CN102477356A - Preparation method for plant-derived solvent replacing benzene solvent in pesticide emulsifiable concentrate - Google Patents
Preparation method for plant-derived solvent replacing benzene solvent in pesticide emulsifiable concentrate Download PDFInfo
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- CN102477356A CN102477356A CN2010105599425A CN201010559942A CN102477356A CN 102477356 A CN102477356 A CN 102477356A CN 2010105599425 A CN2010105599425 A CN 2010105599425A CN 201010559942 A CN201010559942 A CN 201010559942A CN 102477356 A CN102477356 A CN 102477356A
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Abstract
The invention relates to a preparation method for plant-derived solvent replacing benzene solvent in pesticide emulsifiable concentrate. Environment-friendly solvent replacing benzene solvent is developed out by screening, purifying, esterifying, compounding and the like of vegetable oil. The preparation method mainly includes: taking solubility tests of raw pesticide with various types of vegetable oils to select practical raw material oil, using the distillation method to capture oleic acid and linoleic acid components, esterifying the plant-derived oleic acid and linoleic acid, and mixing the esterified product by a certain proportion to enable the product to have high solubility to most raw pesticides. Surfactant and emulsifier which are matched with the solvent are found, and the plant-derived solvent which is high in solubility of raw pesticides and resistant to low temperature is obtained by taking pesticide emulsifiable concentrate product processing test on the plant-derived solvent.
Description
Technical field:
The plant-sourced solvent preparation of benzene kind solvent belongs to biological chemical field in a kind of alternative emulsifiable concentrates for agricultural chemicals.
The inventor through vegetables oil is screened, purifying, esterification, processing such as composite, develop the plant-sourced solvent that substitutes benzene kind solvent in the emulsifiable concentrates for agricultural chemicals, this solvent is environmentally friendly, is suitable for promoting the use of.
Background technology:
Farm chemical emulsion preparation is China's tradition pesticide formulation, in various formulations, accounts for about the last 40%; Surpass in 19 kinds of pesticide preparation products of 5 kilotons in YO, it is the missible oil formulation that 11 kinds of Pesticidal products are arranged, and accounts for 60% of sum.A large amount of organic solvents such as benzene,toluene,xylene have been used in the missible oil product; Benzene class organic solvent has great harm to human and environment, and often contact can suppress the synthetic of human deoxyribonucleic acid, causes chromosome mutation; Destroy hemopoietic system, leukemogenesis.Benzene class organic solvent has caused that to people and animals' toxicity with to the influence of environment the whole world pays close attention to, and various countries have put into effect the use of a series of regulation limitations benzene class organic solvent in succession.The U.S. in 1992 has forbidden organic solvents such as toluene, YLENE and has been used for pesticide preparation, and European countries have also put into effect similar regulation.On August 1st, 2009 played China and no longer issues missible oil product certificate of approval, therefore, developed one type of environmentally friendly plant-sourced solvent, and alternative benzene kind solvent is used for making novel missible oil, was a big event of pesticide preparation research and development.
The inventor through vegetables oil is screened, purifying, esterification, processing such as composite, develop the plant-sourced solvent that substitutes benzene kind solvent in the emulsifiable concentrates for agricultural chemicals, this solvent is environmentally friendly, is suitable for promoting the use of.
Summary of the invention:
Various plants oil is carried out the dissolubility test of pesticide original medicine, thereby choose the raw oil of economical and practical vegetables oil-rapeseed oil as the exploitation of plant-sourced solvent.Selected rapeseed oil moity is analyzed, used distillation method segmentation intercepting oleic acid, linolic acid component.Respectively plant-sourced oleic acid, linolic acid are carried out esterification treatment, the product after the esterification is modulated by a certain percentage, makes it to most pesticide original medicines good solubleness arranged, and reaches more than former medicine 100 grams of per 100 gram plant-sourced solvents dissolved.Select the compatible mutually tensio-active agent of functional group according to the character of the chemical constitution of handling back plant-sourced solvent, found out compatible key parameter between tensio-active agent and the plant-sourced solvent; Consider when plant-sourced solvent missible oil is distributed in the water easy to usely, also selected suitable emulsifying agent.Through to plant-sourced solvent processing emulsifiable concentrates for agricultural chemicals test of products, and the preparation physico-chemical property index after the processing detected, confirmed a kind of strong, the cryophylactic plant-sourced solvent of pesticide original medicine dissolving power.
Description of drawings:
Fig. 1 plant-sourced solvent preparation technology schema; Fig. 2 is with plant-sourced solvent preparation pesticide emulsion preparation process schema.
Embodiment:
At first be that various plants oil is screened, handles.Through stratographic analysis, confirm the vegetables oil composition, formulate the plant oil treatment process.Through distillation method, low temperature is prone to solidify and the high temperature volatile components in the removal vegetables oil.Hold back 200 ℃～240 ℃ of boiling points, 270 ℃～290 ℃ cuts obtain linolic acid and oleic acid respectively.Linolic acid and oleic acid are carried out esterification treatment, obtain methyl linoleate and Witconol 2301.
Select the compatible mutually tensio-active agent of functional group according to the character of the chemical constitution of handling the back vegetables oil, easy to use when taking into account trials of emulsion of plant oil oil simultaneously and being distributed in the water.Found out key parameter compatible between tensio-active agent and the vegetables oil, carried out the test of plant-sourced solvent processing emulsifiable concentrates for agricultural chemicals,, confirmed a kind of strong, the cryophylactic plant-sourced solvent of pesticide original medicine dissolving power through check to the preparation physico-chemical property.
Plant-sourced solvent preparation embodiment one;
At first be that various plants oil is screened, handles.Dissolve agricultural chemicals quizalofopPethyl, Avrmectin, the former medicine of pyridaben respectively with rapeseed oil, can know solvable such the former medicine of rapeseed oil.Rapeseed oil is carried out stratographic analysis, can know that wherein linolic acid accounts for 12%～20%, oleic acid accounts for 40%～60%, and linolenic acid accounts for 6%～12%, and other lipid acid acid account for few part with moisture, volatile matter.According to experimental result, through distillation method, low temperature is prone to solidify and the high temperature volatile components in the removal vegetables oil.Hold back 200 ℃～240 ℃ of boiling points, 270 ℃～290 ℃ cuts can obtain plant-sourced linolic acid and oleic acid respectively.
Plant-sourced linolic acid and oleic acid to obtaining carry out esterification treatment, obtain methyl linoleate and Witconol 2301.The concrete reaction as follows:
With oleic acid (or linolic acid) and methanol mixed, add the catalyzer tosic acid, reflux is about 11 hours.Cooling is used sodium methylate to be neutralized to the pH value and is 8-9, and water is washed till neutrality, after the Calcium Chloride Powder Anhydrous drying, carries out underpressure distillation, promptly gets Witconol 2301 (or methyl linoleate).
Product after the esterification is modulated by a certain percentage, and this proportional range is a Witconol 2301: methyl linoleate=1: 5～1: 0.5 makes it to different pesticide original medicines good solubleness arranged, more than former medicine 100 grams of per 100 gram plant-sourced solvents dissolved.Use this plant-sourced solvent to be aided with the tensio-active agent and the emulsifying agent of screening, can carry out the preparation of emulsifiable concentrates for agricultural chemicals product.
Plant-sourced solvent preparation embodiment two:
Select Semen Maydis oil to carry out plant-sourced solvent preparation test.Dissolve agricultural chemicals Wocosin 50TK, emamectin-benzoate, the former medicine of Chlorpyrifos 94 respectively with Semen Maydis oil, can know solvable such the former medicine of Semen Maydis oil oil.Semen Maydis oil is carried out stratographic analysis, can know that wherein linolic acid accounts for 40%～60%, oleic acid accounts for 20%～40%, and palmitinic acid accounts for 8%～16%, and other lipid acid acid account for few part with moisture, volatile matter.According to experimental result, through distillation method, low temperature is prone to solidify and the high temperature volatile components in the removal vegetables oil.Hold back 200 ℃～240 ℃ of boiling points, 270 ℃～290 ℃ cuts can obtain plant-sourced linolic acid and oleic acid respectively.
Plant-sourced linolic acid and oleic acid to obtaining carry out esterification treatment, obtain methyl linoleate and Witconol 2301, the concrete reaction as follows:
With oleic acid (or linolic acid) and methanol mixed, add the catalyzer tosic acid, reflux is about 11 hours.Cooling is used sodium methylate to be neutralized to the pH value and is 8-9, and water is washed till neutrality, after the Calcium Chloride Powder Anhydrous drying, carries out underpressure distillation, promptly gets Witconol 2301 (or methyl linoleate).
Product after the esterification is modulated by a certain percentage, and this proportional range is a Witconol 2301: methyl linoleate=1: 8～1: 0.4 makes it to different pesticide original medicines good solubleness arranged, more than former medicine 100 grams of per 100 gram plant-sourced solvents dissolved.Use this plant-sourced solvent to be aided with the tensio-active agent and the emulsifying agent of screening, can carry out next step missible oil preparation.
Prepare pesticide emulsion FORMULATION EXAMPLE three with the plant-sourced solvent:
Plant-sourced solvent and qualified pesticide original medicine, suitable tensio-active agent, emulsifier mix to process among the embodiment two dispose, and can produce environmentally friendly emulsifiable concentrates for agricultural chemicals product.Tensio-active agent: having selected the plant-sourced solvent is tensio-active agent with its functional group compatible mutually X 2073.The key parameter of plant-sourced solvent and this tensio-active agent compatibility is 1000: 1～80: 1.Easy to use when making plant-sourced solvent missible oil be distributed in the water, selected suitable emulsifying agent vinylbenzene phenyl Soxylat A 25-7, the consumption of emulsifying agent is a product 1.0%～10.0%, this emulsifying agent can guarantee the emulsifying effectiveness of missible oil.
Claims (3)
1. plant-sourced solvent screening and purification process.
Various plants oil is carried out the dissolubility test of pesticide original medicine, choose economical and practical vegetables oil-rapeseed oil, Semen Maydis oil raw oil as the exploitation of plant-sourced solvent.Selected rapeseed oil, Semen Maydis oil moity are analyzed, used distillation method segmentation intercepting oleic acid, linolic acid component.
Respectively plant-sourced oleic acid, linolic acid are carried out esterification treatment.Product after the esterification; Modulate by a certain percentage; This proportional range is a Witconol 2301: methyl linoleate=1: 8～1: 0.4, and make it good solubleness arranged to different pesticide original medicines, reach the former medicine 100 gram the above object of per 100 gram plant-sourced solvents dissolved.
2. the plant-sourced solvent after claim 1 is handled mixes compositely with pesticide original medicine, tensio-active agent, emulsifying agent, develop novel missible oil up-to-standard, economic environmental protection.Selected the plant-sourced solvent tensio-active agent X 2073 compatible mutually with its functional group.The key parameter of plant-sourced solvent and this tensio-active agent compatibility is 1000: 1～80: 1.Easy to use when making plant-sourced solvent missible oil be distributed in the water, selected suitable emulsifying agent vinylbenzene phenyl Soxylat A 25-7, the consumption of emulsifying agent is a product 1.0%～10.0%, this emulsifying agent can guarantee the emulsifying effectiveness of missible oil.Requirement is protected the key parameter that carries out plant-sourced solvent and this tensio-active agent, emulsifying agent compatibility in the emulsifiable concentrate formulation.
3. benzene kind solvent in the alternative emulsifiable concentrates for agricultural chemicals of this plant-sourced solvent is used for emulsifiable concentrates for agricultural chemicals processing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368583A (en) * | 2015-12-02 | 2016-03-02 | 上海大学 | Method of biodiesel prepared from kitchen waste grease for pesticide missible oil |
| CN108849871A (en) * | 2018-08-22 | 2018-11-23 | 苏州丰倍生物科技有限公司 | Environment-friendly oil phase for dispersible oil suspending agent containing mesosulfuron-methyl and preparation method thereof |
| WO2021244347A1 (en) * | 2020-06-03 | 2021-12-09 | 迈克斯(如东)化工有限公司 | Use of esterified product of unsaturated fatty acid, and agrochemical composition and low eye irritancy pesticide preparation and use thereof |
-
2010
- 2010-11-26 CN CN2010105599425A patent/CN102477356A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368583A (en) * | 2015-12-02 | 2016-03-02 | 上海大学 | Method of biodiesel prepared from kitchen waste grease for pesticide missible oil |
| CN108849871A (en) * | 2018-08-22 | 2018-11-23 | 苏州丰倍生物科技有限公司 | Environment-friendly oil phase for dispersible oil suspending agent containing mesosulfuron-methyl and preparation method thereof |
| CN108849871B (en) * | 2018-08-22 | 2021-02-23 | 苏州丰倍生物科技有限公司 | Environment-friendly oil phase for dispersible oil suspending agent containing mesosulfuron-methyl and preparation method thereof |
| WO2021244347A1 (en) * | 2020-06-03 | 2021-12-09 | 迈克斯(如东)化工有限公司 | Use of esterified product of unsaturated fatty acid, and agrochemical composition and low eye irritancy pesticide preparation and use thereof |
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Application publication date: 20120530 |