2352-38-7Relevant articles and documents
Synthesis and application of aminophenyl-s-triazine derivatives as potential flame retardants in the modification of epoxy resins
Wu, Haiyang,Hu, Rong,Zeng, Birong,Yang, Li,Chen, Ting,Zheng, Wei,Liu, Xinyu,Luo, Weiang,Dai, Lizong
, p. 37631 - 37642 (2018)
In order to develop new phosphorus-nitrogen-containing flame retardants, three novel compounds of DOPO-substituted aminophenyl-s-triazine (TAT-DOPO) with different P/N element ratios were synthesized by Kabachnik-Fields reaction. TAT-triDOPO possessing three DOPO units in one molecule exhibited the best thermal stability. Besides, TAT-triDOPO and TAT-hexaDOPO possessing active hydrogen displayed the characteristics of reactive-type retardant, while TAT-enneaDOPO without active hydrogen represented additive-type retardant. The influences of three TAT-DOPO compounds on the thermal stability, flame retardancy and mechanical properties of the cured EP composites were investigated. Compared with pure EP, the char yields of EP/TAT-DOPO were increased. The LOI value and the UL-94 ratings of EP/TAT-triDOPO with a 5% loading were improved to 34.0% and V-0 grade. The PHRR, THR and HRC of EP/TAT-triDOPO were decreased by 25.7%, 21.1% and 25.4%, respectively. Furthermore, the incorporation of TAT-triDOPO could also improve the flexural strength and elastic modulus of cured EP. It was explained that the existence of active hydrogen atoms within TAT-triDOPO molecule can act as effective chemical cross-linking points in EP network. Finally, based on the SEM and TGA-FTIR analysis of pyrolytic products of cured EP/TAT-DOPO, it was deduced that the prepared TAT-DOPO flame retardant could exhibit both condensed phase and gas phase flame-retardancy mechanism.
Preparation method of anti-aging agent TAPDT and intermediate thereof
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Paragraph 0023-0024; 0026-0027; 0029-0030; 0032-0033, (2021/10/30)
The invention discloses a preparation method of an anti-aging agent TAPDT and an intermediate thereof. The preparation method comprises the following steps: carrying out a condensation dehydration reaction on melamine and formic acid to generate 2,4,6-tri(formamido)-1,3,5-triazine, then subjecting 2,4,6-tri(formamido)-1,3,5-triazine to reacting with parachloronitrobenzene under the catalysis of sodium carbonate to generate 2,4,6-tri(4-nitrophenyl)-1,3,5-triazine, and carrying out a hydrogenation reversion reaction on 2,4,6-tri(4-nitrophenyl)-1,3,5-triazine and methyl isoamyl ketone under the catalysis of a catalyst to obtain the anti-aging agent TAPDT. The method has the advantages of usage of easily available raw materials, low cost, high reaction selectivity and yield, few byproducts, low cost and good quality.
Method of producing triazine derivatives
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Paragraph 0043-0045; 0051-0053, (2018/07/10)
The invention provides a method of producing triazine derivatives, the preparation method comprises the following steps: the para-nitroaniline compound A with the substitution reaction, forming intermediate B; the intermediate with a compound B C hydrogen reduction alkylation reaction, to obtain the triazine derivatives. The present invention provides a substituted by the above-mentioned method of the first hydrogenation after reducing hydrocarbon two-step preparation triazine derivatives, not only has a high product yield, but also greatly shortened the technological process. At the same time, this method effectively avoid in the traditional technique double-substituted P-phenylenediamine of by-product, the product separation becomes easier, the cost is greatly reduced, pollution-free, high product quality, easy to realize industrial.
