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Polymer used as pesticide dispersant and purpose thereof

A dispersant and polymer technology, applied in the field of polymer synthesis, can solve problems such as thermal storage instability and high viscosity of the system, and achieve the effects of improving electrostatic repulsion, strengthening electrostatic repulsion, and firm adsorption

Inactive Publication Date: 2017-12-01
祥瑞博特生物科技(北京)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pesticide formulations in suspension systems are usually the preferred formulation type for many products because they are easy to produce, process and use. However, there are many difficulties in the preparation of suspensions with high content and low melting point, such as high system viscosity and unstable thermal storage.

Method used

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  • Polymer used as pesticide dispersant and purpose thereof
  • Polymer used as pesticide dispersant and purpose thereof
  • Polymer used as pesticide dispersant and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The polymer used as a pesticide dispersant is composed of the following components in mass percent: 5% glycidyl ether group-terminated methallyl alcohol polyoxyethylene ether (n=9) of the structural formula (I), 10% methyl Allyl alcohol polyoxyethylene ether ammonium sulfate (m=15), 10% methyl methacrylate and 75% methacrylic acid are copolymerized.

[0030] A method for preparing a polymer used as a pesticide dispersant, comprising:

[0031] Step 1: Add 8.83kg of methallyl alcohol polyoxyethylene ether (m=15, molecular weight 732), 1.41kg of sulfamic acid and 0.28kg of urea into the dewatered reactor, wherein methallyl alcohol polyoxyethylene The molar ratio of vinyl ether to sulfamic acid is 1:1.2, and the mass of urea is 19.86% of the mass of sulfamic acid; stir and heat up to 65°C, and keep warm for 4 hours to obtain 10kg of methallyl alcohol polyoxyethylene ether ammonium sulfate;

[0032] Step 2: Add 200kg of water and 5kg of glycidyl ether group-terminated metha...

Embodiment 2

[0039] The polymer used as pesticide dispersant is composed of the following components in mass percentage: 10% glycidyl ether group-terminated methallyl alcohol polyoxyethylene ether (n=15) of structural formula (I), 15% methyl Allyl alcohol polyoxyethylene ether ammonium sulfate (m=23), 15% ethyl methacrylate and 60% methacrylic acid are copolymerized.

[0040] A method for preparing a polymer used as a pesticide dispersant, comprising:

[0041] Step 1: Add 13.86kg of methallyl alcohol polyoxyethylene ether (m=23, molecular weight 1084), 1.36kg of sulfamic acid and 0.34kg of urea into the dewatered reactor, wherein methallyl alcohol polyoxyethylene The molar ratio of vinyl ether to sulfamic acid is 1:1.1, and the mass of urea is 25% of the mass of sulfamic acid; stir and heat up to 70° C., and keep warm for 5 hours to obtain 15 kg of methallyl alcohol polyoxyethylene ether ammonium sulfate;

[0042] Step 2: Add 148kg of water and 10kg of glycidyl ether group-terminated meth...

Embodiment 3

[0049] The polymer used as the pesticide dispersant is composed of the following components in mass percent: 10% glycidyl ether group-terminated methallyl alcohol polyoxyethylene ether (n=15) of structural formula (I), 20% methyl Allyl alcohol polyoxyethylene ether ammonium sulfate (m=15), 15% isooctyl methacrylate and 55% methacrylic acid are copolymerized.

[0050] A method for preparing a polymer used as a pesticide dispersant, comprising:

[0051] Step 1: Add 17.49kg of methallyl alcohol polyoxyethylene ether (m=15, molecular weight 732), 3.01kg of sulfamic acid and 0.75kg of urea into the dewatered reactor, wherein methallyl alcohol polyoxyethylene The molar ratio of vinyl ether to sulfamic acid is 1:1.3, and the mass of urea is 24.91% of the mass of sulfamic acid; stir and heat up to 70°C, and keep warm for 5 hours to obtain 20kg of methallyl alcohol polyoxyethylene ether ammonium sulfate;

[0052] Step 2: Add 160kg of water and 10kg of glycidyl ether group-terminated m...

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Abstract

The invention belongs to the field of polymer synthesis, and particularly relates to a dispersant for pesticide preparations. The dispersant is prepared from (in mass percent) 1% to 30% of glycidyl ether group-terminated methylallyl alcohol polyoxyethylene ether, 1% to 30% of methylallyl alcohol polyoxyethylene ether ammonium sulfate, 5% to 30% of methacrylate, and 10% to 90% of methacrylic acid in a water-soluble initiator under copolymerization, and is used as a pesticide dispersant in pesticide suspension systems, suspension emulsion systems and the like. Due to the uniform distribution of lipophilic and hydrophilic groups in the molecule, and the adsorption and dispersion effect is good, thereby facilitating the smooth preparation of a suspension system with stable performance.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to a dispersant and its preparation method and application. Background technique [0002] Herbicides, insecticides, fungicides, and plant growth regulators are generally prepared into pesticide preparations such as wettable powders, water-dispersible granules, and suspension concentrates, and their formulations generally contain dispersants and wetting agents. Pesticide formulations in suspension systems are usually the preferred formulation type for many products because they are easy to produce, process and use. However, there are many difficulties in the preparation of suspensions with high content and low melting point, such as high system viscosity and unstable thermal storage. The invention provides an excellent dispersant, which can more easily prepare the suspension system of various pesticides. Contents of the invention [0003] The present invention aims at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N25/04C08F283/06C08F220/06C08F220/14C08F220/18C08F220/28A01N47/24A01P3/00
CPCA01N25/04A01N25/30A01N47/24C08F283/065C08F220/06
Inventor 梁勇军
Owner 祥瑞博特生物科技(北京)有限责任公司
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