Because of its chemoselective reactivity,the authors synthesized two 1,3,5-triazin deriva- tives of 2-(4,6-dichloro-1,3,5-triazin)-oxygen ammonium trifluoro acetate and 2,4-dichloro-6-hydroxyeth- ylamino-1,3,5-triazine defined as novel ABB′active-monomer a and active-monomer b,which contained triazine from cyanuric chloride and ethanolamine.The effect of reaction conditions on the conversion was investigated.The products were characterized by FTIR,DSC,TG,LC-MS,NMR and so on.