Process method for preparing polyester antistatic agent from pentaerythritol tetraacrylate wastewater

Abstract

The invention discloses a process method for preparing a polyester antistatic agent from pentaerythritol tetraacrylate wastewater. The method comprises the steps: taking waste liquid generated by synthesizing pentaerythritol tetraacrylate as a raw material; taking the waste liquid, alkoxy polyether containing a double bond at the tail end and an initiator, carrying out free radical reaction, neutralizing with sodium hydroxide, and preparing the macromolecular antistatic agent for polyester fabrics. The technological process is complete, the preparation method is simple, the raw materials are cheap, the operation is easy, the final reaction liquid is directly output as a product, the waste liquid treatment investment is saved, the prepared polyester fabric antistatic agent has an obvious antistatic effect after being compared with other similar products on the market, has the use effect not less than that the similar products and even superior to that of the similar products.

Description

technical field [0001] The invention relates to the field of chemical waste liquid treatment, in particular to a process for preparing polyester antistatic agent by using pentaerythritol tetraacrylate wastewater. Background technique [0002] There are few hydrophilic groups in the polyester fiber structure, poor hygroscopicity, and it is easy to generate static electricity. This leads to polyester fabrics not only absorbing dust in the air during wearing, but also prone to electric shocks. Therefore, during the production process, factories often use antistatic agents to treat polyester fabrics with antistatic treatment, but it is difficult to obtain durable antistatic effects. [0003] In the process of using acrylic acid and other alcohol raw materials to prepare pentaerythritol tetraacrylate, waste liquid containing acrylic acid will be produced. If the waste liquid is directly discharged, it will cause waste of raw material monomer acrylic acid on the one hand, and on t...

AI Technical Summary

Problems solved by technology

[0002] There are few hydrophilic groups in the polyester fiber structure, poor hygroscopicity, and it is easy to generate static electricity, which leads to polyester fabrics not only absorbing dust in the air during wearing, but also prone to electric shocks

Therefore, during the production process, factories often use antistatic agents to treat polyester fabrics, but it is difficult to obtain durable antistatic effects.

[0003] In the process of using acrylic acid and other alcohol raw materials to prepare pentaerythritol tetraacrylate, waste liquid containing acrylic acid will be produced. If the waste liquid is directly discharged, it will cause waste of raw material monomer acrylic acid on the one hand, and on the other hand waste liquid treatment costs The cost is high, which increases the operating burden of the manufacturer; for such industrial waste liquids that are not easy to biochemically treat, the current methods for treating acrylic acid and ester wastewater mainly include incineration, wet catalytic oxidation, biological methods, etc.

The treatment methods commonly used at home and abroad all adopt the incineration method. Since the waste water cannot be directly burned, heavy oil needs to be added to support the combustion, and the treatment cost per ton is high. If the treatment is not timely, the waste liquid will automatically explode and generate a large amount of solid waste. Multiplied, the cost of treatment is high, and it will release dioxins into the atmosphere to cause secondary pollution; although the catalytic oxidation method can effectively decompose the pollutants, the key lies in the catalyst, which has strong specificity and is not sensitive to the influent conditions. The restrictions are relatively high. At present, only a few acrylic acid manufacturers adopt this method. In addition, the catalytic wet oxidation method requires high temperature and high pressure conditions to treat wastewater, and there are also potential safety hazards.

However, its anaerobic method, aerobic method, ion exchange fiber method, etc. are still in the theoretical research stage, and there are still many technical problems that have not been effectively overcome and cannot be promoted.

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