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A polyquaternary salt, preparation method and application thereof

A polyquaternary ammonium salt and cationic technology, applied in botany equipment and methods, applications, herbicides and algicides, etc., can solve problems such as unsatisfactory algicidal effect, high concentration of chemicals used, and side effects in the environment, and achieve Good water solubility and degradability, environmental friendliness, good killing effect

Active Publication Date: 2014-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are that the concentration of the medicament is high, and there are side effects on the environment; the second is that the algicidal effect is not ideal.

Method used

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  • A polyquaternary salt, preparation method and application thereof
  • A polyquaternary salt, preparation method and application thereof
  • A polyquaternary salt, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 16.0 g of bis(2-dimethylaminoethyl) ether and 20 g of methanol to a 100 ml three-neck flask equipped with a stirring, thermometer, and dropping funnel, stir and heat up to 50°C, add bis(chloromethyl) dropwise ) ether 11.2g, dripped in 30 minutes, then continued to react for 2 hours, and cooled to room temperature; after decompression distillation to remove solvent and light components, a light yellow product was obtained, sample number s-A. The algicidal effect of the sample on Scenedesmus (Chlorophyta) is shown in Table 1, and the algae killing effect on Oscillatoria (Cyanophyta) is shown in Table 2.

[0033] Product NMR 13 The C analysis results show that the N-CH with a chemical shift of 45.29 in the raw material bis(2-dimethylaminoethyl) ether 3 The peak disappears and a quaternary ammonium N with a chemical shift of 52.62 is generated + -CH 3 Peak, the C-Cl peak with a chemical shift of 76.90 in the raw material bis(chloromethyl) ether disappears, and the qu...

Embodiment 2

[0035] Add 13.2g of bis(dimethylaminomethyl)ether and 20g of ethanol to a 100ml three-necked flask equipped with a stirring, thermometer, and dropping funnel, stir and heat up to 70°C, add bis(2-chloroethyl) dropwise ) ether 14.2g, dripped in 30 minutes, then continued to react for 2 hours, and cooled to room temperature; after decompression distillation to remove solvent and light components, a light yellow product was obtained, sample number s-B. The algicidal effect of the sample on Scenedesmus (Chlorophyta) is shown in Table 1, and the algae killing effect on Oscillatoria (Cyanophyta) is shown in Table 2.

[0036] Product NMR 13 The C analysis results show that the N-CH with a chemical shift of 41.69 in the raw material bis(dimethylaminomethyl)ether 3 The peak disappears and a quaternary ammonium N with a chemical shift of 52.62 is generated + -CH 3 Peak, the C-Cl peak with a chemical shift of 42.84 in the raw material bis(2-chloroethyl) ether disappears, and the quater...

Embodiment 3

[0038] Add 21.6g of bis(4-dimethylaminobutyl)ether and 20g of ethanol to a 100ml three-necked flask equipped with stirring, a thermometer, and a dropping funnel, stir and heat up to 70°C, add bis(2-chlorobutyl) dropwise Ethyl) ether 14.2g, dripped in 30 minutes, then continued to react for 2 hours, and cooled to room temperature; after decompression distillation to remove solvent and light components, a light yellow product was obtained, sample number s-C. The algicidal effect of the sample on Scenedesmus (Chlorophyta) is shown in Table 1, and the algae killing effect on Oscillatoria (Cyanophyta) is shown in Table 2.

[0039] Product NMR 13 The C analysis results show that the N-CH with a chemical shift of 44.91 in the raw material bis(4-dimethylaminobutyl) ether 3 The peak disappears and a quaternary ammonium N with a chemical shift of 52.21 is generated + -CH 3 Peak, the C-Cl peak with a chemical shift of 42.84 in the raw material bis(2-chloroethyl) ether disappears, and ...

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Abstract

The invention relates to polyquaternary salt which is composed of a cation part and an anion part. The cation part is in the linear structure comprising the following repetitive units, wherein each of R1 and R2 is independently selected from one of hydroxyl substitutes of straight-chain alkylene and branch-chain alkylene of C1-C8 and straight-chain alkylene or branch-chain alkylene of C1-C8, and each of m, n, p, q is any integer of 1-8. The polyquaternary salt has efficient and broad-spectrum algae removing capacity, and dosage is low.

Description

technical field [0001] The invention relates to a polyquaternary ammonium salt and its preparation method and application. Background technique [0002] Algae are microscopic plankton floating in the water. When they reproduce rapidly and in large numbers in a short period of time, they will form algal blooms, which will cause serious harm to the environment. Due to the increasingly serious pollution of the water environment, the eutrophication of the water quality is caused, the harm of algae is continuously aggravated, and the amount of algicide is also continuously increased. In order to prevent and limit the accumulation of various water treatment agents in nature and protect the environment and water resources from pollution, higher requirements are put forward for the high efficiency and low toxicity of water treatment chemicals, which undoubtedly puts forward new challenges for water treatment workers. challenge. [0003] At present, there are few special algicides ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/00A01N33/12A01P13/00
Inventor 余伟发王秀李本高
Owner CHINA PETROLEUM & CHEM CORP
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