Process method for preparing thickening agent by using ethoxylated bisphenol A diacrylate wastewater

Abstract

The invention discloses a process method for preparing a thickening agent by using ethoxylated bisphenol A diacrylate wastewater. Wastewater of ethoxylated bisphenol A diacrylate synthesis is used asa raw material, and free radical polymerization is carried out on a mixed solution of the wastewater, styrene, terephthalic acid diallyl ester and acrylamide to prepare a thickening agent. The processflow is complete, the preparation method is simple, the raw material is cheap, operation is easy, deep resource utilization and near-zero emission of wastewater are realized, and new industrial output is created. In addition, compared with an existing thickening agent on the market, the prepared thickening agent prepared by the process method has reliable performance, and even partial parametersare slightly better than parameters of similar products, so that the thickening agent extracted from the wastewater has good market competitiveness.

Description

technical field [0001] The invention relates to the field of chemical waste liquid treatment, in particular to a process for preparing a thickener by using ethoxylated bisphenol A diacrylate wastewater. Background technique [0002] In the printing process, the high shear force will reduce the consistency of the color paste, and it is necessary to use a thickener to increase the viscosity of the system, so that the system has good rheological properties, so that the dye and the fiber can be better combined. The properties of the thickener determine the properties of the printing paste, and directly affect the color brilliance, pattern clarity, hand feel and other properties of the printed product. Therefore, when printing, it is very important to select a stable, safe, applicable and cost-effective thickener. [0003] In the process of preparing ethoxylated bisphenol A diacrylate by using raw materials such as acrylic acid and ethoxylated bisphenol A, waste liquid containin...

AI Technical Summary

Problems solved by technology

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. It will release dioxins into the atmosphere and cause secondary pollution; although the catalytic oxidation method can effectively decompose pollutants, the key lies in the catalyst, which has strong specificity and has high restrictions on water inflow conditions. 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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