Imidazole triazine isocyanuric acid latent curing agent as well as synthesis method and application thereof

[0053] Example 1: Synthesis of 2,4-diamino-6-[2-(2-methyl-1-imidazole) ethyl]-1,3,5-triazine isocyanuric acid

[0054] Add 2,4-diamino-6-[2-(2-methyl-1-imidazolium)ethyl]-1,3,5-triazine (1mol) into a 250mL circular cylinder with a stirring and condensing reflux device In a bottom flask, add isocyanuric acid (1mol), add ethanol (100mL), and stir the reaction at 80°C for 5 hours. When the residual amount of 2,4-diamino-6-[2-(2-methyl-1-imidazole)ethyl]-1,3,5-triazine detected by liquid chromatography is ≤0.05%, it is confirmed that after the reaction , centrifuged to remove the solvent, and dried to obtain the target product (white solid) - 2,4-diamino-6-[2-(2-methyl-1-imidazole) ethyl]-1,3,5 - Triazine isocyanuric acid, the yield of which is 92%. The synthetic reaction formula is as follows formula IV:

[0055]

[0056] Among them, R 1 is methyl, R 2 for hydrogen.

[0057] The IR data of the product 2,4-diamino-6-[2-(2-methyl-1-imidazole) ethyl]-1,3,5-triazine isocyanuric

[0064] Example 2: Synthesis of 2,4-diamino-6-[2-(2-phenyl-1-imidazole) ethyl]-1,3,5-triazine isocyanuric acid

[0065] Add 2,4-diamino-6-[2-(2-phenyl-1-imidazole)ethyl]-1,3,5-triazine (1mol) into a 250mL round bottom flask, and add iso Add methanol (100 mL) to cyanuric acid (1 mol), and stir the reaction at 80°C for 5 hours. When the residual amount of 2,4-diamino-6-[2-(2-phenyl-1-imidazole)ethyl]-1,3,5-triazine detected by liquid chromatography is ≤0.05%, it is confirmed that after the reaction , centrifuged to remove the solvent, and dried to obtain the target product (white solid) - 2,4-diamino-6-[2-(2-phenyl-1-imidazole) ethyl]-1,3,5 - Triazine isocyanuric acid, the yield of which is 98%.

[0066] Example 3: Synthesis of 2,4-diamino-6-[2-(2-isopropyl-1-imidazole) ethyl]-1,3,5-triazine isocyanuric acid

[0067] Add 2,4-diamino-6-[2-(2-isopropyl-1-imidazole)ethyl]-1,3,5-triazine (1mol) into a 250mL round bottom flask, and add Isocyanuric acid (1mol), deionized water (100mL) was added, and the reaction was stirred at 110°C for 4 hours. When the residual amount of 2,4-diamino-6-[2-(2-isopropyl-1-imidazole)ethyl]-1,3,5-triazine is detected by liquid chromatography ≤0.05%, it is confirmed that the reaction is complete Afterwards, centrifugal dehydration, drying to obtain the target product (white solid) - 2,4-diamino-6-[2-(2-isopropyl-1-imidazole) ethyl]-1,3,5 - Triazine isocyanuric acid, the yield of which is 99%.