150238-76-9Relevant academic research and scientific papers
Method for synthesizing triazine compound by Friedel-Crafts reaction micro-channel method
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Paragraph 0014-0016; 0022, (2020/05/02)
The invention discloses a method for synthesizing a triazine compound by a Friedel-Crafts reaction micro-channel method. The method comprises the following steps: carrying out mixing dissolving on cyanuric chloride represented by a formula (I), a compound represented by a formula (II), a Lewis acid as a catalyst and an organic solvent to obtain a reaction solution for later use; replacing and exhausting the air in a micro-channel reactor by using nitrogen, injecting the prepared reaction liquid into the micro-channel reactor through a metering pump, carrying out a Friedel-Crafts reaction, controlling the reaction temperature to be 0-120 DEG C, controlling the reaction retention time to be 10-180 minutes, and carrying out post-treatment on the reaction liquid flowing out of the micro-channel reactor to obtain the triazine compound represented by a formula (III), wherein in the formula (II) and the formula (III), the substituent R1 is hydrogen, methyl, hydroxyl, methoxy or chlorine atom,and the substituent R2 is hydrogen, methyl or hydroxyl. By adopting the micro-channel reactor, the corresponding reaction conditions are optimized, the mass transfer and heat transfer effects of thereaction are good, the reaction time is shortened, side reactions are reduced, and the yield of the target product is high.
Triazinyl coumarin type fluorescent whitening agent, and preparation method and application thereof
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Paragraph 0044; 0050-0051; 0065; 0069-0070; 0074; 0078-0079, (2020/04/17)
The invention discloses a triazinyl coumarin type fluorescent whitening agent, and a preparation method and an application thereof. Cyanuric chloride is used as a main raw material, firstly, a s-triazinyl intermediate is synthesized from cyanuric chloride and resorcinol, and then 7-hydroxy-4-methylcoumarin reacts with the s-triazinyl intermediate to obtain the 2,4-bis(7-hydroxy-4-methyl)coumarin-6-(2,4-dihydroxy)phenyl-1,3,5-triazinyl fluorescent whitening agent. The triazinyl coumarin type fluorescent whitening agent is simple in synthesis method, has relatively strong thermal stability, emits relatively strong blue fluorescence at about 450 nm, has a quite strong fluorescent whitening effect, can whiten, brighten and color paper, and can be widely applied to the production fields of paper, textile printing and dyeing, plastic processing and the like as a whitening agent.
Process for making 2-hydroxy-4-alkoxyphenyl or 2,4-dihydroxyphenyl substituted 1,3,5-triazine UV absorbers
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, (2008/06/13)
The invention provides new processes for preparing compositions containing at least one triazine compound, including new compounds for use in these processes to form the compositions and the new compositions that are formed.
