Clean production method of alkoxylation glycerol triacrylate

Abstract

The invention belongs to the field of photocuring materials and relates to a clean production method of alkoxylation glycerol triacrylate. The method comprises the following steps that: (1) ethoxylation glycerol / propoxylation glycerol, acrylic acid, catalysts, solvents, polymerization inhibitors and antioxidants are subjected to esterification backflow dehydration; (2) soda flakes and a small quantity of water are added for neutralization; (3) magnesium polysilicate absorbing agents are added for absorbing salt generated during the neutralization; (4) the pressure reduction dehydration is carried out, and solvents are removed; (5) press filtering is carried out, and the magnesium polysilicate and the salt absorbed by the magnesium polysilicate are filtered away; (6) alkaline calcium bentonite and calcium bentonite are added, and decoloration, trace moisture removal and trace acid removal are carried out; (7) press filtering is carried out; and (8) product index detection is carried out. The method belongs to the high-yield clean production method of the ethoxylation glycerol triacrylate and propoxylation glycerol triacrylate and has the advantages that economic benefits and environment benefits are realized, and the problem of organic waste water pollution in the production process of the ethoxylation glycerol triacrylate and the propoxylation glycerol triacrylate is fundamentally solved.

Description

technical field [0001] The invention belongs to the field of light-curing materials, and relates to a clean production method of alkoxylated glycerin triacrylate. Background technique [0002] With the rapid development of science and technology and the strict restrictions on solvents in environmental protection regulations, more and more people pay attention to photocurable polymer materials. Light-curing materials have excellent properties such as fast curing, low energy consumption, less pollution, and high efficiency, so they are widely used in coatings, printing, and electronics industries, and have developed rapidly in recent years. Ethoxylated glycerin triacrylate and propoxylated glycerin triacrylate are a new type of light-curing material-multifunctional light-curing monomer with low viscosity, low stimulation, fast curing speed, strong dilution and high transparency It is widely used in light-curable inks, coatings, adhesives and other fields, and is widely used i...

AI Technical Summary

Problems solved by technology

[0004] ①Most of the catalysts used are sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid and other catalysts, which are usually removed by neutralization, water washing, and layering methods, which will produce a large amount of industrial organic wastewater and pollute the water environment;

[0005] ② During the reaction process, the excess (8%-15%) acrylic acid is completely washed away by water, and is usually removed by neutralization, water washing, and layering methods, which will produce a large amount of industrial organic wastewater with high COD, which is difficult to treat and has high treatment costs. The problem makes the product more expensive to manufacture;

[0006] ③While neutralizing and washing with water, some acrylate products will be taken away, which will reduce the yield and increase the cost

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