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A kind of microcapsule suspension pendimethalin herbicide

A pendimethalin and microcapsule suspension technology, which is applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve the problems of lack of quick effect and high preparation cost, and achieve the elimination of air pollution, capsule wall materials, etc. Less, better penetration effect

Active Publication Date: 2018-07-10
NANJING GAOZHENG AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although domestic pesticide manufacturers can produce pendimethalin microcapsule suspensions, according to the relevant reports obtained, these pendimethalin microcapsules There are three problems in suspending agent: first, aromatic hydrocarbons and ketone organic solvents are not completely removed, and the product still contains harmful substances such as toluene, xylene, and cyclohexanone; second, the capsule material (capsule skin) accounts for 10- 20%, such microcapsule suspension lacks quick-acting properties; third, the preparation cost is high, which is 3-5 times higher than other dosage forms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Take 450g of pendimethalin solid and 7g of capsule wall material 1-carboxymethylcellulose respectively, add them to a multi-port reaction bottle, add an appropriate amount of deionized water under stirring, and then slowly add the auxiliary agent 1 diethylene diethylene glycol Alcohol butyl ether 2.5g, additive 2 glycerol polyoxyethylene ether 2.5g, vigorously stirred and heated to 60-65°C, to obtain a uniform heterogeneous system;

[0019] (2) Take 3g of capsule wall material 2-the second monomer acrylamide, and dissolve it with an appropriate amount of deionized water; take another 0.05g of initiator potassium persulfate, dissolve it with deionized water and set aside;

[0020] (3) Slowly add the capsule wall material 2-second monomer solution and initiator solution into the heterogeneous system obtained through (1) under heating and stirring, and maintain the temperature in the reaction bottle between 58~68°C , the stirring speed is not lower than 200 rpm, and th...

Embodiment 2

[0026] (1) Take 450g of pendimethalin solid and 10g of capsule wall material 1-carboxymethylcellulose respectively, add them into a multi-port reaction bottle, add an appropriate amount of deionized water under stirring, and then slowly add the auxiliary agent 1 diethylene glycol Alcohol butyl ether 4.5g, auxiliary agent 2 glycerol polyoxyethylene ether 4.5g, stir vigorously and heat to 60-65°C to obtain a uniform heterogeneous system;

[0027] (2) Take 5g of capsule wall material 2-the second monomer acrylamide, and dissolve it with an appropriate amount of deionized water; take another 0.1g of initiator potassium persulfate, dissolve it with deionized water and set aside;

[0028] (3) Slowly add the capsule wall material 2-second monomer solution and initiator solution into the heterogeneous system obtained through (1) under heating and stirring, and keep the temperature in the reaction bottle between 60~70°C , the stirring speed is not lower than 300 rpm, and the two soluti...

Embodiment 3

[0034] (1) Take 450g of pendimethalin solid and 14g of capsule wall material 1-carboxymethylcellulose respectively, add them into a multi-port reaction bottle, add an appropriate amount of deionized water under stirring, and then slowly add the auxiliary agent 1 diethylene diethylene glycol Alcohol dibutyl ether 6g, auxiliary agent 2 glycerol polyoxyethylene ether 6g, stir vigorously and heat to 70°C to obtain a uniform heterogeneous system;

[0035] (2) Take 6g of capsule wall material 2-the second monomer acrylamide, and dissolve it with an appropriate amount of deionized water; take another 0.15g of initiator potassium persulfate, dissolve it with deionized water and set aside;

[0036] (3) Slowly add the capsule wall material 2-second monomer solution and initiator solution into the heterogeneous system obtained through (1) under heating and stirring, and keep the temperature in the reaction bottle between 65~75°C , the stirring speed is not lower than 300 rpm, and the two...

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Abstract

The invention discloses a microcapsule suspension type pendimethalin herbicide technology, which includes the composition and mass fraction of the macromolecule material of the capsule wall, the composition of the auxiliary agent used, the process route and preparation method for preparing the microcapsule suspension, the microcapsule The main physical and chemical indicators and detection and evaluation methods of capsule suspension. The microcapsule suspended pendimethalin herbicide obtained by applying the technique of the invention has good physical and chemical properties, can effectively prevent field weeds of crops in dry fields, and has a good protective effect on crops.

Description

technical field [0001] The invention relates to the field of pesticide formulation production, in particular to a preparation technology of microcapsule-suspended pendimethalin herbicide used for protection of upland crops. Background technique [0002] Pendimethalin, also known as pendimethalin, or pendimethalin, is an aniline herbicide successfully developed by the American cyanamide company. Pendimethalin is an excellent selective herbicide for upland crops, which can effectively control annual grasses and some annual broadleaf weeds, and is widely used in corn, soybeans, peanuts, cotton, direct upland rice, potatoes, tobacco, vegetables and other crops to control barnyardgrass, crabgrass, foxtail, bluegrass, quinoa, amaranth and other weeds in the field; because pendimethalin has good weeding selectivity and low toxicity to humans and animals, pendimethalin is currently Ling is the third largest herbicide in the world, and its sales are second only to the killing herbic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N33/18A01N25/04A01N25/28A01P13/00
Inventor 汪茂勤汪莘杰
Owner NANJING GAOZHENG AGROCHEM
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