Synthesis and Application of Phosphorus-Bromine-Nitrogen Containing Flame Retardant
LIU Zhi_guo, DING Tao, JIA Xiu_wei, WANG Su_min, WANG Yan_lin ( Chemistry and Chemical Engineering College of Henan University, Henan Kaifeng 475001, China )
phosphorus_bromine_nitrogen containing flame retardant O_(2,4,6_tribromophenyl) phosphoric melamine salt(Ⅲ) and O,O_di(2,4,6_Tribromophenyl)phosphoric salt (Ⅳ) were synthesized, with their structures confirmed by elemental analyses, FT_IR etc. It showed that phosphorus_bromine_nitrogen in same molecular had synergism. Simultaneously, it was confirmed that phosphorus_bromine_nitrogen containing compounds (Ⅲ) and (Ⅳ) were superior to phosphorus_bromine containing flame retardant (Ⅴ). The application test showed that the flame retardants (Ⅲ),(Ⅳ) and (Ⅴ) could not influence the physics mechanical property of unsaturated polyester resin.