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Method for preparing organosilyl quaternary ammonium salt sterilizing agent

A technology of organosilicon quaternary ammonium salt and bactericide, which is applied in the preparation of bactericidal chemicals and the field of preparation of organosilicon quaternary ammonium bactericide, which can solve the problems of limited application and operator poisoning, and achieve large output and easy storage , the effect of mild reaction conditions

Inactive Publication Date: 2006-06-28
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this product (DC-5700) uses methanol as a raw material and solvent, which is easy to cause poison to operators and limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A kind of preparation method of organosilicon quaternary ammonium salt fungicide

[0026] Consists of the following steps:

[0027] A. Anhydrous sodium sulfate is placed in an environment with a temperature of 200 ° C, dried for 5 hours, and dehydrated;

[0028] B. the anhydrous sodium sulfate after dehydration is joined in absolute ethanol with the weight ratio of anhydrous sodium sulfate: dehydrated alcohol=8: 100, stirs 24 hours, prepares the dehydrated dehydrated alcohol completely, for subsequent use;

[0029] C. At a stirring speed of 60 rpm, add dimethyl octadecyl tertiary amine to the above-mentioned completely dehydrated absolute ethanol until it dissolves, and then slowly add gamma-chloropropyl triethoxysilane dropwise, and stir evenly, and the dropping time is controlled within 2 hours; wherein, the molar ratio of each component is dimethyl octadecyl tertiary amine C 18 h 37 N(CH 3 ) 2 : γ-Chloropropyltriethoxysilane ClC 3 h 6 Si(OC 2 h ...

Embodiment 2

[0034] Embodiment 2: A kind of preparation method of organosilicon quaternary ammonium salt fungicide

[0035] Consists of the following steps:

[0036] A. Anhydrous sodium sulfate is placed in an environment with a temperature of 210°C, dried for 5 hours, and dehydrated;

[0037] B. the anhydrous sodium sulfate after dehydration is joined in absolute ethanol with the weight ratio of anhydrous sodium sulfate: dehydrated alcohol=10:100, stirs 30 hours, prepares dehydrated dehydrated alcohol completely, for subsequent use;

[0038] C. At a stirring speed of 50-70 rpm, add dimethyl octadecyl tertiary amine to the above-mentioned completely dehydrated absolute ethanol until it dissolves, and then slowly add γ-chloropropyl triethoxy silane, and stir evenly, and the dropping time is controlled within 2 hours; wherein, the molar ratio of each component is dimethyl octadecylamine C 18 h 37 N(CH 3 ) 2 : γ-Chloropropyltriethoxysilane ClC 3 h 6 Si(OC 2 h 5 ) 3 : absolute ethano...

Embodiment 3

[0043] Embodiment 3: A kind of preparation method of organosilicon quaternary ammonium salt fungicide

[0044] Consists of the following steps:

[0045] A. Place anhydrous sodium sulfate in an environment with a temperature of 190°C, dry for 5 hours, and dehydrate;

[0046] B. the anhydrous sodium sulfate after dehydration is joined in absolute ethanol with the weight ratio of anhydrous sodium sulfate: dehydrated alcohol=5: 100, stirs 20 hours, prepares dehydrated dehydrated alcohol completely, for subsequent use;

[0047] C. At a stirring speed of 50-70 rpm, add dimethyl octadecyl tertiary amine to the above-mentioned completely dehydrated absolute ethanol until it dissolves, and then slowly add γ-chloropropyl triethoxy silane, and stir evenly, and the dropping time is controlled within 2 hours; wherein, the molar ratio of each component is dimethyl octadecylamine C 18 h 37 N(CH 3 ) 2 : γ-Chloropropyltriethoxysilane ClC 3 h 6 Si(OC 2 h 5 ) 3 : absolute ethanol = 1.0...

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PUM

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Abstract

A process for preparing the quaternary ammonium salt of organo-silicon type bactericide includes such steps as adding anhydous sodium sulfate to absolute alcohol, stirring, dissolving dimethyl octadecalamine in it while stirring, slowly dripping gamma-chloropropyl triethoxysilane while stirring, adding catalyst, reaction to obtain the quarternary ammonium salt of organo-silicon, cooling, regulating pH=7, and adding absolute alcohol to regulate its concentration to 40%.

Description

technical field [0001] The invention relates to a preparation method of a bactericidal chemical, in particular to a preparation method of an organosilicon quaternary ammonium salt fungicide, and belongs to the field of fine chemicals. Background technique [0002] At present, there are many kinds of bactericidal chemicals being used in China, each with its own advantages and characteristics. Alkyl quaternary ammonium salts are a type of typical cationic surfactants, which have strong antibacterial and bactericidal effects, and are widely used in public places such as hospitals, swimming pools, sterilization of circulating cooling water It can be used as oilfield fungicide and water shutoff agent. However, alkyl quaternary ammonium salts have great disadvantages: low chemical activity, elution type when applied to textiles, and easy elution; relatively high toxicity, easy to gradually accumulate on the surface of human skin, and long-term use is prone to lesions. Moreover, ...

Claims

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Application Information

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IPC IPC(8): A01N55/10A01P3/00
Inventor 刘少杰史晓华刘渊刘华飞贾丽韩玲
Owner SHANDONG UNIV
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