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A kind of biomass-based slow-release pesticide and preparation method thereof

A slow-release pesticide and biomass technology, applied in botany equipment and methods, biocides, animal repellants, etc., can solve the problems of low pesticide loading and low chemical reactivity, and achieve high poisoning efficiency, Increased added value, increased utilization and the effect of added value

Inactive Publication Date: 2020-04-24
SHENYANG RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of biomass-based slow-release pesticides and the biomass-based slow release pesticide

Method used

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  • A kind of biomass-based slow-release pesticide and preparation method thereof
  • A kind of biomass-based slow-release pesticide and preparation method thereof
  • A kind of biomass-based slow-release pesticide and preparation method thereof

Examples

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preparation example Construction

[0019] The invention provides a preparation method of a biomass-based slow-release pesticide, the method comprising the following steps:

[0020] (1) performing the first contact reaction with the biomass raw material, the fatty alcohol and the first acidic catalyst, and then separating the product obtained in the first contact reaction to obtain light oil and alcoholysis residue;

[0021] (2) at a pH value of 7-9 and 30-50°C, carry out the second step in an organic solvent with the alcoholysis residue, the pesticide technical compound of the structure shown in formula (1) and an optional cross-linking agent. Three-contact reaction for 0.5-1 hour;

[0022] Wherein, the fatty alcohol is an aliphatic saturated monohydric alcohol with 4-13 carbon atoms; the crosslinking agent is one of carbonyl chloride, thionyl chloride, isocyanate, maleic anhydride and phthalic anhydride or more,

[0023]

[0024] In formula (1), R 1 and R 2 Each independently is a C1-C3 alkoxy group, R ...

Embodiment 1

[0063]This example is used for the biomass-based slow-release pesticide and its preparation method provided by the present invention.

[0064] (1) add the n-octanol solvent of 300 weight parts and the sulfuric acid (98 weight % vitriol oil) of 12 weight parts in the airtight 2L Japanese Taiatsu company TAS-2 type stainless steel reaction kettle that stirrer and temperature controller are housed, After sealing, energize and heat, and add 100 parts by weight of poplar wood powder while stirring (the poplar wood collection site is Taiyang Village, Heping Township, Yuexi County, Anhui Province, through a 0.45mm aperture screen, the water content is 7.82% by weight, and the hydroxyl value is 190mgKOH / g ), heated to 130°C at a heating rate of 2-3°C / min, after reacting for 60min, rapidly cooled to room temperature, and then extracted and separated the obtained product by 300 parts by weight of n-hexane solvent, and removed n-hexane by rotary evaporation to obtain Light oil (n-hexane ...

Embodiment 2

[0071] This example is used to illustrate the biomass-based slow-release pesticide and its preparation method provided by the present invention.

[0072] Adopt the same method as Example 1 to prepare biomass-based slow-release pesticides, the difference is that step (2) is not carried out, but in 300 parts by weight of acetone, the alcohol obtained by 100 parts by weight of step (1) solution residue, 50 parts by weight of trichlorfon, and 3 parts by weight of diphenylmethane diisocyanate were mixed, and the pH was adjusted to 7 with 30% by weight of aqueous sodium hydroxide solution, and the reaction was stirred at 50°C for 60 minutes, and the reacted The product was distilled under reduced pressure to remove the acetone solvent, and then 300 parts by weight of absolute ethanol was added to the resulting mixture to stir and dissolve the unreacted pesticide former drug trichlorfon, and then the resulting mixture was subjected to vacuum filtration to remove the ethanol solution, ...

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Abstract

The invention discloses a biomass-based slow-release pesticide and a preparation method thereof. The method comprises the following steps: (1) carrying out a first contact reaction on a biomass raw material, fatty alcohol and a first acidic catalyst, and separating the product obtained after the first contact reaction so as to obtain light oil and alcoholysis residue; and (2) carrying out a third contact reaction on the alcoholysis residue and a pesticide drug compound and an optional cross-linking agent in an organic solvent at the pH value of 7-9 and at 30-50 DEG C for 0.5-1 h. The fatty alcohol is C4-C13 aliphatic saturated monohydric alcohol. The cross-linking agent is one or more ingredients selected from a group consisting of carbonyl chloride, thionyl chloride, isocyanate, maleic anhydride and phthalic anhydride. Drug loading capacity of the prepared biomass-based slow-release pesticide reaches up to 25.47 wt%. The pesticide has high insect poisoning efficiency. After three months of the use, the highest inhibition rate of fruit fly eggs still reaches up to 80% and above.

Description

technical field [0001] The invention relates to a preparation method of a biomass-based slow-release pesticide and the biomass-based slow-release pesticide prepared by the method. Background technique [0002] The development of organophosphorus insecticides has promoted the upgrading of the world's pesticide and insecticide industry, making the world's pesticide industry develop from highly toxic and high-residue organochlorine insecticides to the era of organophosphorus insecticides. With the development of technology, New varieties of organophosphorus insecticides continue to emerge, making it a leading insecticide, and at the same time entering a historical stage in the availability of systemic insecticides. So far, there are more than 100 kinds of organophosphate insecticides, and more than 50 kinds are commonly used. In recent years, organophosphorus pesticides still account for about 30% of the world's pesticides. Organophosphorus insecticides mainly control harmful...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/08A01N57/20A01P7/04
Inventor 邹献武秦特夫丑靖宇康卓杨辉斌李改云
Owner SHENYANG RES INST OF CHEM IND
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