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Halogen-free environmentally-friendly cationic antistatic agent and preparation method thereof

A cationic, antistatic agent technology, applied in the field of halogen-free environment-friendly cationic antistatic agent and its preparation, can solve the problems of not cheap and easy to obtain synthetic raw materials, poor antistatic effect, affecting product quality, etc., and achieve good stability Long-lasting antistatic effect, convenient for continuous industrial production, easy to operate

Inactive Publication Date: 2012-11-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the quaternary ammonium salt cationic antistatic agents are synthesized by reacting amine (ammonia) with alkyl halides (or alkyl halides). Some of these antistatic agents have good antistatic effects on plastics or fibers, but Not resistant to temperature, some are resistant to temperature, but the antistatic effect is not good, and the cost is high, which affects product quality and popularization.
Because the molecule contains halogen atoms, it has certain toxicity and has different degrees of impact on people and the environment. It is not safe or environmentally friendly, and the synthetic raw materials are not cheap and easy to obtain, and the cost is relatively high.

Method used

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  • Halogen-free environmentally-friendly cationic antistatic agent and preparation method thereof
  • Halogen-free environmentally-friendly cationic antistatic agent and preparation method thereof
  • Halogen-free environmentally-friendly cationic antistatic agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 100g of octadecyl primary amine and 30g of isopropanol into a four-necked flask previously purged with nitrogen, add 78g of formic acid while stirring, heat up to 80°C, add 80g of formaldehyde, and complete the addition in about 2 hours. After the addition was completed, react at a constant temperature of 100°C for 2 hours, add 40g of formaldehyde, finish the addition in 1 hour, and react at a constant temperature of 100°C for 18 hours. The reaction product was neutralized with 30 ml of 40% sodium hydroxide solution, washed with water until neutral, and the organic layer was separated, solvent removed, and vacuum-dried to obtain a tertiary amine with a yield of 91.8%. Add the tertiary amine into a four-neck bottle purged with nitrogen, add 35g of ethylene glycol, add 50g of diethyl sulfate dropwise under vigorous stirring, and finish the addition in 1 hour. Static agent product octadecyl ethyl dimethyl ammonium ethyl sulfate, the appearance is a yellowish viscous li...

Embodiment 2

[0036] Add 100g of dodecyl primary amine and 30g of n-hexane into a four-necked flask previously purged with nitrogen, add 78g of formic acid while stirring, heat up to 70°C, add 120g of formaldehyde, and complete the addition in about 2 hours. After the addition was completed, the reaction was carried out at a constant temperature of 70°C for 20 hours. The reaction product was neutralized with 30 ml of 40% sodium hydroxide solution, washed with water until neutral, and the organic layer was separated, solvent removed, and vacuum-dried to obtain a tertiary amine with a yield of 90.2%. Add the tertiary amine into a four-neck bottle purged with nitrogen, add 48g of dimethyl sulfate dropwise under vigorous stirring, and finish adding in 1 hour. After the addition, quickly raise the temperature to 50°C and react at a constant temperature for 5 hours to obtain the antistatic agent product dodecane Ethyl dimethyl ammonium ethyl sulfate, the appearance is light yellow viscous liquid,...

Embodiment 3

[0038] Add 100g of tetradecyl primary amine and 30g of n-butanol into a four-necked flask previously purged with nitrogen, add 78g of formic acid while stirring, heat up to 80°C, add 120g of formaldehyde, and complete the addition in about 2 hours. After the addition was completed, the reaction was carried out at a constant temperature of 80°C for 15 hours. The reaction product was neutralized with 30 ml of 40% sodium hydroxide solution, washed with water until neutral, and the organic layer was separated, solvent removed, and vacuum-dried to obtain a tertiary amine with a yield of 92.2%. Add the tertiary amine into a four-necked bottle purged with nitrogen, add 35g of n-butanol, add 50g of diethyl sulfate dropwise under vigorous stirring, and finish adding in 1 hour. The electrostatic agent product tetradecyl ethyl dimethyl ammonium ethyl sulfate, the appearance is a colorless viscous liquid, the pH of the solution is 7.1 (2g / 100ml), the free amine in the product is 0.8%, and...

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Abstract

The invention discloses a halogen-free environmentally-friendly cationic antistatic agent and a preparation method thereof. The preparation method comprises the following steps of: reacting alkyl primary amine with formic acid and formaldehyde in a solvent to obtain tertiary amine and then reacting with dimethyl sulfate or diethyl sulfate to prepare the cationic antistatic agent. The preparation method specifically comprises the following steps of: adding the alkyl primary amine, the solvent and the formic acid into a reaction kettle, adding formaldehyde solution while strongly mixing at a temperature of 50-100 DEG C, reacting for 5-25 hours, neutralizing a solvent removing agent and drying to obtain alkyl tertiary amine; and reacting the alkyl tertiary amine with the dimethyl sulfate or the diethyl sulfate for 1-10 hours at a temperature of 50-100 DEG C to obtain the cationic antistatic agent. The halogen-free environmentally-friendly cationic antistatic agent has the advantages of stable and good anti-antistatic agent effect, easily-available raw materials, simple process, temperature resistance, low cost and convenience in use and can be widely applied to coatings, plastics and fibers, and other properties of products are not affected in the use process.

Description

technical field [0001] The invention relates to a quaternary ammonium salt cationic antistatic agent, in particular to a halogen-free environment-friendly cationic antistatic agent and a preparation method thereof. The antistatic agent can be used for antistatic in coatings, plastics and synthetic fibers. Background technique [0002] Polymer materials have a series of advantages such as light weight, wear resistance, corrosion resistance, easy molding and processing, and good insulation against electricity and heat. They have been widely used in national economy and daily life in industry, agriculture, electricity, daily necessities, etc. all areas of life. Polymer materials usually have very high resistivity (10 13 ~10 17 Ω·cm), often used as insulating materials, but in the process of processing and use, it is easy to accumulate static electricity due to friction, which will not only affect the transparency and surface appearance of the product, but also cause electrost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/08C08K5/19C09D167/08C09D7/12C07C305/06C07C211/63C07C303/24C07C209/00
Inventor 任碧野陈廷忠
Owner SOUTH CHINA UNIV OF TECH
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