Preparation method of water-insoluble quaternary ammonium salt

A quaternary ammonium salt, water-insoluble technology, applied in botany equipment and methods, chemicals for biological control, biocides, etc., can solve the problems of non-renewable recycling, toxicity, etc., and achieve excellent bactericidal performance and bactericidal performance Enhanced, large specific surface area effect

Active Publication Date: 2018-04-06
浙江肯特催化材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-oxidizing fungicides used in the early days are generally small molecular compounds, which cannot be regenerated and recycled, and also have certain toxicity

Method used

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  • Preparation method of water-insoluble quaternary ammonium salt
  • Preparation method of water-insoluble quaternary ammonium salt
  • Preparation method of water-insoluble quaternary ammonium salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of water-insoluble type quaternary ammonium salt is:

[0033] Mix 90g dimethylaminoethyl methacrylate (DMAEMA), 10g ethylene glycol dimethacrylate (EGDMA), and 40g ethyl acetate evenly, then add to gelatin mass concentration 1% and sodium chloride mass concentration 15% Then add 1 g of azobisisobutyronitrile (AIBN), heat to 65° C. and stir for 4 hours, then raise the temperature to 75° C. to continue the reaction for 4 hours. After the reaction is completed, filter and collect the precipitate. Wash with purified water, then extract with ethanol, and dry to obtain a resin matrix.

[0034] Take 50 g of the above-mentioned dried resin matrix and put it into a three-necked flask, purging with nitrogen for 5 minutes, add 100 g of brominated n-butane solution with a mass concentration of 50%, raise the temperature to 90° C., and stir for 18 hours. After the reaction is completed, filter with suction to collect the precipitate, wash it with ethano...

Embodiment 2

[0036] A kind of preparation method of water-insoluble type quaternary ammonium salt is:

[0037] Mix 80g of dimethylaminoethyl methacrylate (DMAEMA), 20g of ethylene glycol dimethacrylate (EGDMA), and 50g of ethyl acetate evenly, then add to gelatin mass concentration 1% and sodium chloride mass concentration 15% Then add 1 g of azobisisobutyronitrile (AIBN), heat to 65° C. and stir for 4 hours, then raise the temperature to 75° C. to continue the reaction for 4 hours. After the reaction is completed, filter and collect the precipitate. Washing with purified water, followed by extraction with ethanol, and drying to obtain a resin matrix.

[0038] Take 50 g of the above-mentioned dried resin matrix and put it into a three-necked flask, purging with nitrogen for 5 minutes, add 100 g of brominated n-butane solution with a mass concentration of 50%, raise the temperature to 90° C., and stir for 18 hours. After the reaction is completed, filter with suction to collect the precipi...

Embodiment 3

[0040] A kind of preparation method of water-insoluble type quaternary ammonium salt is:

[0041] 80g dimethylaminoethyl methacrylate (DMAEMA), 20g ethylene glycol dimethacrylate (EGDMA), 25g ethyl acetate, 25g lauryl alcohol were mixed evenly, then added to gelatin mass concentration 1% and chlorinated Add 1 g of azobisisobutyronitrile (AIBN) to an aqueous solution with a sodium mass concentration of 15%, heat to 65° C. and stir for 4 hours, then raise the temperature to 75° C. and continue the reaction for 4 hours. After the reaction is completed, filter and collect the precipitate. Washing with purified water, followed by extraction with ethanol, and drying to obtain a resin matrix.

[0042] Take 50 g of the above-mentioned dried resin matrix and put it into a three-necked flask, purging with nitrogen for 5 minutes, add 100 g of brominated n-butane solution with a mass concentration of 50%, raise the temperature to 90° C., and stir for 18 hours. After the reaction is compl...

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Abstract

The invention provides a preparation method of a water-insoluble quaternary ammonium salt. The preparation method comprises first, performing a copolymerization reaction on dimethylaminoethyl methacrylate (DMAEMA) and ethyleneglycol dimethacrylate (EGDMA) to prepare a resin matrix with a polymer network structure, then performing a nucleophilic substitution reaction on the resin matrix and 1-chlorobutane, so as to give a quaternary ammonium group having bactericidal function on the polymer chain, and performing post-treatment to obtain the product. During the preparation of the resin matrix, since a porogen is added to enable the prepared polymer to have a well-developed pore structure, on the one hand, a subsequent quaternary-amination nucleophilic substitution reaction is facilitated, and on the other hand, a prepared bactericide has a larger specific surface area and enhanced bactericidal performance. The water-insoluble quaternary ammonium salt prepared by the preparation method ofthe invention not only has excellent bactericidal performance of a quaternary ammonium salt, but also is insoluble in water, free from residual poisons, can be recycled, and is particularly suitablefor sterilization and disinfection of industrial and civil water treatment and other fluid media.

Description

technical field [0001] The invention relates to a preparation method of a water-insoluble quaternary ammonium salt, which belongs to the field of fungicides, in particular to a water-insoluble, renewable and recyclable polymer resin fungicide containing a quaternary ammonium salt group. Background technique [0002] Fungicides are usually divided into oxidizing and non-oxidizing, oxidizing fungicides include Cl 2 , NaClO, Br 2 , O 3 , ClO 2 , H 2 o 2 And other peroxides, etc., are the oldest type of fungicides used in water treatment. Oxidative fungicides are still the most widely used type of fungicides because of their strong bactericidal power, low price, and wide range of sources. However, oxidizing fungicides have insurmountable shortcomings, such as reaction with organic matter in the environment (such as: chlorine-type fungicides react with organic matter in water to generate chlorinated hydrocarbon carcinogens), poor stability, and are used for industrial water...

Claims

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Application Information

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IPC IPC(8): C08F220/34C08F222/14C08F8/44C08J9/28A01N33/12A01P3/00A01P1/00
CPCA01N33/12C08F8/44C08F220/34C08J9/28C08J2201/0502C08J2333/14C08F222/102
Inventor 华超君杨龙张志明洪钟强金珍珍杨建锋徐凯嘉徐青华兰欣蕾陈剑武
Owner 浙江肯特催化材料科技有限公司
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