A kind of synthetic method of high-purity crosslinking agent triallyl isocyanurate
A technology of triallyl isocyanurate and a synthesis method, applied in directions such as organic chemistry, can solve the problems of large amount of waste residue, high energy consumption, low product purity, etc., and achieve the effects of increasing reactivity and high yield
Active Publication Date: 2021-12-14
ANHUI RES INST OF CHEM IND
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Problems solved by technology
[0011] The present invention aims to provide a green and environment-friendly synthetic method aiming at defects such as high unit consumption of allyl chloride, large amount of waste water and waste residue generated, low product purity and high energy consumption in the existing synthesis method of TAIC, and the technical problem to be solved is through High-purity TAIC with content ≥99.0% can be obtained after synthesis, separation and desolventization
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[0027] Non-limiting examples are described as follows:
[0028] 1. Open the clear water circulating pump of the secondary graphite parallel-flow falling film absorption tower, and add 350kg to the 1000L glass-lined reaction kettle equipped with a thermometer, a propulsion stirrer (120 revolutions per minute) and a reflux condenser, 2-dichloroethane, 123kg cyanuric acid, 2kg tetrabutylammonium bromide, 1.1kg triethylamine, 1.1kg cuprous chloride, heated to 70°C under stirring, slowly added 343kg bromopropylene dropwise, about 2 hours about. After the dropwise addition, continue the heat preservation reaction at 70°C for 5 hours, and the hydrogen bromide gas produced by the reaction is absorbed into hydrobromic acid by the clear water of the second-stage graphite parallel-flow falling film absorption tower. Residual hydrogen bromide gas in the reaction system, then add 200kg of water, stir to dissolve the water-soluble impurities in the reaction system, after standing and strat...
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Abstract
The invention discloses a method for synthesizing high-purity cross-linking agent triallyl isocyanurate. High-purity triallyl isocyanurate is synthesized from bromopropene, cyanuric acid, a phase transfer catalyst and a composite catalyst in a polar organic solvent. Isocyanurate, the generated tail gas hydrogen bromide is fully absorbed by the circulating water of the second-stage graphite parallel-flow falling film absorption tower, and made into a certain concentration of hydrobromic acid for sale. The synthesis reaction is in an organic medium rather than in a strong Alkaline water solution is carried out in liquid, which will not produce a large amount of waste water containing organic matter and salts, and avoids the treatment and disposal of high-concentration waste water and waste residue. Finally, the reaction solution is desolvated to obtain high-purity TAIC with a content of ≥99.0%.
Description
1. Technical field [0001] The invention relates to a preparation method of fine chemicals, in particular to a synthesis method of high-purity crosslinking agent triallyl isocyanurate. 2. Background technology [0002] The crosslinking agent TAIC is the abbreviation of the English name Triallyl isocyanurate, the Chinese name is triallyl isocyanurate or triallyl isocyanurate, and the scientific name is 1,3,5-triallyl- S-triazine-2,4,6-trione, the structural formula is as follows: [0003] [0004] The cross-linking agent TAIC is a light yellow or colorless liquid (crystal) at room temperature, and its molecular formula is C 12 h 15 N 3 o 3 , with a molecular weight of 249.27, is a polyolefin compound containing aromatic heterocycles. It is divided into two specifications: industrial grade and high-purity grade. Industrial grade TAIC is a light yellow liquid (crystal) with a content of ≥95.0% and a melting point of 17-21°C. , high-purity TAIC colorless liquid (crystal) ...
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IPC IPC(8): C07D251/34
CPCC07D251/34
Inventor 丁向东
Owner ANHUI RES INST OF CHEM IND