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Adsorption carrier for herbicide

An adsorption carrier and herbicide technology, applied in the direction of herbicides and algicides, applications, biocides, etc., can solve the problems of reduced drug efficacy, aggravated pollution, poor slow release, etc., to increase the disintegration speed and improve the weeding effect , the effect of broad-spectrum herbicidal performance

Active Publication Date: 2022-06-17
SHANDONG BIO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor slow-release performance of current herbicides, the action time of one application is short, and the effective ingredients are quickly lost through rainfall, requiring multiple and large quantities of application.
However, excessive reliance and long-term large-scale use of single herbicides have led to the emergence and development of weed resistance, resulting in reduced efficacy, increased dosage, increased costs, and increased pollution, directly threatening the continued use of herbicides and agriculture. Production safety

Method used

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  • Adsorption carrier for herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A high-efficiency and fast-disintegrating cellular herbicide is prepared from the following raw materials by weight:

[0046] 55 parts of herbicide, 13 parts of wetting agent, 5 parts of disintegrant, 7 parts of stabilizer, 40 parts of adsorption carrier for herbicide, 450 parts of 0.8% emulsifier aqueous solution, and 5 parts of binder.

[0047] The herbicide is alachlor. The wetting agent is sodium lauryl sulfate. Described disintegrating agent is the mixture of urea and sodium chloride in mass ratio of 1:1. The binder is a mixture of maltodextrin and xanthan gum in a mass ratio of 1:3.

[0048] The stabilizer is quaternary ammonium-sulfonated microcrystalline cellulose. The preparation method of the quaternary ammonium-sulfonated microcrystalline cellulose is as follows: Weigh 12 g of microcrystalline cellulose, add 300 mL of NaOH aqueous solution with a mass concentration of 0.5%, heat up to 95° C., keep the temperature at 95° C. for 60 minutes, and cool to 30° C...

Embodiment 2

[0056] The difference from Example 1 is that in Example 2, the preparation method of the quaternary ammonium-sulfonated microcrystalline cellulose is as follows: Weigh 12 g of microcrystalline cellulose, add 300 mL of NaOH aqueous solution with a mass concentration of 0.5% , heat up to 95°C, keep at 95°C for 60min, cool to 30°C and filter with suction, add the filter cake to 300mL of NaOH aqueous solution with a mass concentration of 10%, stand at 25°C for 150min, suction filter, filter cake at 30°C ℃ and dried to constant weight to obtain alkali-treated microcrystalline cellulose. Take 8.0 g of alkali-treated microcrystalline cellulose, add it to 200 mL of acetone, and add 10 mL of NaOH aqueous solution with a mass concentration of 10% at a rate of 1 mL / min at 25 ° C and 200 r / min magnetic stirring, and then add 16 g of 3-chloro- 2-Hydroxypropyltrimethylammonium chloride, heated to 45°C, reacted at 45°C for 3 hours, then adjusted the pH value to 7.0 with 1 mol / L hydrochloric ...

Embodiment 3

[0058] The difference from Example 1 is that in Example 3, the preparation method of the quaternary ammonium-sulfonated microcrystalline cellulose is as follows: Weigh 12 g of microcrystalline cellulose, add 300 mL of NaOH aqueous solution with a mass concentration of 0.5% , heat up to 95°C, keep at 95°C for 60min, cool to 30°C and filter with suction, add the filter cake to 300mL of NaOH aqueous solution with a mass concentration of 10%, stand at 25°C for 150min, suction filter, filter cake at 30°C ℃ and dried to constant weight to obtain alkali-treated microcrystalline cellulose. Take 8.0 g of alkali-treated microcrystalline cellulose, add it to 200 mL of acetone, and add 10 mL of NaOH aqueous solution with a mass concentration of 10% at a rate of 1 mL / min at 25 ° C and 200 r / min magnetic stirring, and then add 16 g of 3-chloro- 2-Hydroxypropyltrimethylammonium chloride, heated to 45°C, reacted at 45°C for 3 hours, then adjusted the pH value to 7.0 with 1 mol / L hydrochloric ...

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Abstract

The invention discloses an adsorption carrier for herbicides. The adsorption carrier for herbicide includes modified ferric oxide and modified molecular sieve. The preparation method of the modified ferroferric oxide is as follows: take sodium citrate aqueous solution L and tannic acid aqueous solution, mix uniformly, add ferric ferric oxide powder, ultrasonically treat, and finally, separate the product with a magnet, wash, dry, pulverize and sieving to obtain modified ferric oxide. The preparation method of the modified molecular sieve is as follows: adding the molecular sieve into toluene, adding KH550 dropwise under stirring conditions, continuing to stir and react, adding polyacrylic acid aqueous solution, stirring and mixing, suction filtering, filter cake washing, vacuum drying, crushing, and sieving, A modified molecular sieve is obtained. Compared with the prior art, the adsorption carrier of the present invention is applied to the high-efficiency and fast-disintegrating cell herbicide, so that the cell herbicide has high-efficiency and broad-spectrum herbicidal performance, good dispersion performance, good suspension, and high-efficiency and rapid disintegration. Disintegration characteristics. Through the scientific ratio of stabilizer, emulsifier and adsorption carrier, the disintegration speed, dispersion and suspension stability are improved, and the weed control effect is greatly improved.

Description

technical field [0001] The present invention relates to an adsorption carrier for herbicides. Background technique [0002] Compared with pesticides and fungicides, herbicides have higher technical requirements. Improper use of pesticides and fungicides may only affect the control effect. The improper use of herbicides is related to the safety of crop growth. [0003] The discovery and large-scale application of herbicides is one of the most important symbols of the agricultural green revolution in the 20th century. It has greatly changed the mode of agricultural labor production, promoted the modernization of agriculture, and made great contributions to ensuring the security of global food production. . So far, more than 30 major categories, more than 20 action targets, and about 400 to 500 chemical herbicide varieties have been developed around the world. However, because the current herbicides generally have poor slow-release properties, the action time of one applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/08A01N25/22A01N37/26A01P13/00C08F251/02C08F220/58C08B15/02
CPCA01N25/08A01N25/22A01N37/26C08B15/02C08F251/02C08F220/585
Inventor 黄美红
Owner SHANDONG BIO BIOTECH
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