Bi-cationic epoxy bactericide and preparation method thereof

A dicationic, epoxy-type technology, applied in the direction of botanical equipment and methods, biocides, chemical instruments and methods, etc., can solve the problems that the performance of fungicides cannot be achieved, achieve excellent killing effect, simple synthesis process, Good sterilization effect

Inactive Publication Date: 2018-05-18
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ideal fungicide requires many properties such as high sterilization efficiency, good slime peeling effect, good drug resistance, good compatibility, acid and alkali resistance, high temperature and high salt resistance, environmental friendliness and low cost. There are many kinds of fungicides, but the performance of each fungicide cannot simultaneously have the performance of the aforementioned ideal fungicides.

Method used

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  • Bi-cationic epoxy bactericide and preparation method thereof
  • Bi-cationic epoxy bactericide and preparation method thereof
  • Bi-cationic epoxy bactericide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 40 g of dodecylamine and 20 g of isopropanol in a three-necked flask (250 ml), and heat in a water bath. At 70°C, 133 g of 2,3-epoxypropyltrimethylammonium chloride isopropanol solution with a mass fraction of 50% was slowly added dropwise. After the addition was completed, the temperature was raised and the reaction time was maintained for 10 hours. The reaction temperature was 90 Celsius, after the reaction process is over, let it cool naturally until it cools down to room temperature, take a part of the product to measure the structure of its active ingredients, recrystallize with a mixed solvent of petroleum ether / isopropanol, and dry to obtain a yellow solid, that is, a dication Type quaternary ammonium salt. Select the ATR method (infrared spectrum) to characterize the product structure, the characterization results are shown in figure 1 shown. Add water to the remaining product to form a solution with a mass percentage of 30% of the dicationic quaternary am...

Embodiment 2

[0019] Add 40 g of dodecylamine and 20 g of ethylene glycol in a three-necked flask (250 ml), and heat in a water bath. Slowly add 133 g of 2,3-epoxypropyltrimethylammonium chloride ethylene glycol solution with a mass fraction of 50% at 70°C. After the addition is completed, heat up and keep the reaction time for 8 hours. The reaction temperature is 90 Celsius, after the reaction process is finished, allow it to cool naturally until it is cooled to room temperature, continue to add water, and be mixed with a solution with a 52% mass fraction of a dicationic quaternary ammonium salt to obtain a dicationic epoxy fungicide N2.

[0020] Embodiment 3 bactericidal performance evaluation

[0021] The performance evaluation method of fungicide adopts the test bottle method of extinction dilution method, and the reference standard is "Fungicide Performance Evaluation Method" (SY / T 5890-1993), "Measurement Method for Bacteria and Algae in Industrial Circulating Cooling Water (GB / T14643...

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Abstract

The invention discloses a bi-cationic epoxy bactericide for water treatment and a preparation method of the bi-cationic epoxy bactericide. The bi-cationic epoxy bactericide for water treatment consists of bi-cationic quaternary ammonium salt with the mass percentage being 10%-90% and a solvent. The bi-cationic epoxy bactericide is synthesized from raw materials including organic amine and 2,3-epoxypropyltrimethylammonium chloride in the presence of a solvent medium and prepared into the required concentration with water, and the bactericide is prepared. Compared with conventional bactericides,the bactericide has the characteristics of broad spectrum, high efficiency, good chemical resistance, complete biodegradability, no toxicity, low foam, low cost and the like, is applicable to industrial recycling cooling water systems, oilfield reinjection water and wastewater treatment and has very high killing efficiency for common bacteria such as TGB (total general bacteria), SRB (sulfate reducing bacteria), FB (ferrous bacteria) and the like.

Description

technical field [0001] The invention belongs to the field of water treatment chemicals and relates to a dicationic epoxy fungicide and a preparation method thereof. Background technique [0002] In the industrial circulating cooling water and oilfield reinjection water system, there are a large number of various microorganisms (algae, bacteria, fungi, etc.), and various microorganisms and their secretions form together with the sediment, scale, dust and dead microorganisms in the water body. biological slime. Biological slime works together with harmful microbial secretions to cause corrosion and damage to metal equipment under scale, thereby shortening the service life of equipment, reducing the heat exchange effect of heat exchangers, and seriously affecting production. In oilfield production, these bacteria and microorganisms will not only cause corrosion of drilling and surface oil-water treatment equipment and blockage of pipelines, but also damage oil layers, reduce p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N33/12A01P1/00C07C215/40C07C213/04C02F1/50
CPCA01N33/12C02F1/50C07C213/04C07C215/40
Inventor 王惠姚光源张磊张少松魏清张迪彦章甦
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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