New bromotriazine has been successfully developed

In recent days, the research team headed by Prof. Kong Qingchi of the China University of Fuels (East China) has successfully manufactured a new brominated triazine (tris(tribromobenzene-oxygen-based)-cyanurate) production process. However, in the existing technologies, tribromophenol, cyanuric chloride, and sodium hydrogen oxyhydroxide are used as the raw materials, because tribromophenol has the properties of water absorption and sublimation, and is difficult to dry. Therefore, a large amount of loss in the drying process results in the production of tribromophenol. Also larger. This technology is considered suitable and uses phenol to directly combine tris(tribromobenzene-oxygen-based)-cyanurate to prevent the synthesis, high purification, and drying of tribromophenol. The entire synthesis process is carried out in a reaction vessel. It eliminates the need for high purification, clutching, and drying of the mid- and mid-waist products, simplifying the process and reducing energy consumption.

In view of the insufficient existing technology, this technology is based on the process of first synthesizing tris(phenoxy-based)-trimeric cyanate, followed by bromination to synthesize tris(tribromobenzene-oxygen-based)-trimeric-isocyanate. Dissolve phenol in chlorobenzene solvent, then participate in anhydrous aluminum trichloride as a reagent, and then participate in cyanuric chloride, so that cyanuric chloride reacts with phenol to synthesize tris(phenoxy-based)-cyanurate, Reducing temperature and participating in water, using bromine as brominating agent, brominating, rinsing, distilling, forming crystals, centrifugal clutching, drying and other processes to obtain tris(tribromophenoxy-oxygen-based)-cyanuric ester finished product, preventing The tribromophenol synthesis, high purification, drying and other issues, the response in a reaction kettle implementation, eliminating the need for high purity purification, clutch, drying and other treatment, to simplify the process and reduce energy consumption.

Tris(tribromobenzene-oxygen-based)-trimeric-isocyanate is an excellent flame retardant and has excellent flame-retardant properties. Many researches on its synthetic methods have been made in and out of the country.

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