A kind of preparation method of electronic grade triglycidyl isocyanurate

Abstract

The invention belongs to the technical field of chemical preparations, and particularly relates to a preparation method for electronic-grade triglycidyl isocyanurate. The method specifically comprisesthe following steps: uniformly mixing cyanuric acid, epoxy chloropropane, organic strong base and water, reacting for 1.5 h at 75-80 DEG C; heat-insulating for 1 h at 100 DEG C; in vacuum, 35-40 DEGC, adding sodium hydroxide; vacuum-unloading, removing a solid phase, adding clear water to mother liquor, stewing and removing superstratum saline water; in vacuum, 60-70 DEG C, evaporating a part ofepoxy chloropropane from the substratum mother liquor; placing a distilled material in a crystallization kettle, stirring, at 8-10 DEG C, and removing a liquid phase; decompressing the solid phase, and microwave-drying, to obtain a final product. The catalyst is the organic strong base which does not contain halogen, and the final product has not a halide ion residue. A cyclization process is alkalified in vacuum, so epoxy chloropropane hydrolysis caused by alkaline water and a by-product produced by TGIC cycle opening are avoided. The technical scheme of the preparation method is used, so the product quality is apparently improved, the product cost and the energy consumption are greatly reduced, and the environment is friendly.

Description

technical field [0001] The invention belongs to the technical field of preparation of chemical preparations, and in particular relates to a new method for preparing electronic-grade triglycidyl isocyanurate. Background technique [0002] Triglycidyl isocyanurate (TGIC), chemical name tris(2,3-epoxypropyl)-s-triazine-2,4,6-(1H-3H-5H)-trione, is a A heterocyclic organic compound, because it contains three epoxy groups and a triazine ring structure, has high functionality, reactivity and excellent chemical stability, and is widely used as an excellent curing agent for thermosetting powders It is an irreplaceable curing agent in the coating industry, especially in printed circuit boards (PCB). Due to the stable triazine ring structure in the TGIC molecular structure, the TGIC powder coating has good heat resistance and weather resistance. At the same time, the amide group in the triazine ring makes it easy to crystallize into crystals, which is suitable for large-scale industri...

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Problems solved by technology

Although this method avoids epichlorohydrin hydrolysis and TGIC ring-opening to generate by-products in the cyclization process to a certain extent, catalyst residues still exist, and the cyclization process needs to consume a large amount of methanol and product post-treatment will generate a large amount of sewage. Obviously Higher production costs and serious harm to the environment

[0006] It can be seen that the existing production process for preparing electronic-grade TGIC products, due to the unreasonable use of catalysts, the use of a large amount of methanol for crystallization and the washing of large amounts of water for post-treatment of products, not only leads to high residual chlorine in products, high production costs, but also is very unfavorable to environmental protection.

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