|
Synthesis of 1,3,5-tris(pentabromobenzyl)isocyanurate Wu Junhao, Wang Quanzeng, Wang Jianrong, Ou Yuxiang Abstract A trisubstituted symmetrical triazine flame retardant——1,3,5-tris (pentabromobenzyl) isocyanurate (TPBBIC) was synthesized by using cyanuric acid and pentabromobenzyl bromide as starting materials. The yield of purified product reached 74%. TPBBIC contains 75% of bromine, and it is superior to many of the existing brominated flame retardants in thermal stability. Its melting point is higher than 340 °C, and the mass loss is only 2% at 346°C. The processing temperature is expected to reach 300°C when polymers are flame-retarded with TPBBIC. So, it could be used for most of the present engineering plastics.Key words Flame retardant, Triazine compound, 1,3,5-Tris(pentabromobenzyl)isocyanurate, Synthesis
1,3,5-三(五溴苄基)异氰尿酸酯的合成 吴俊浩 王泉增 王建荣 欧育湘 *(北京理工大学国家阻燃材料实验室 北京 100081) 摘要 以氰尿酸及五溴苄基溴为原料，合成了一种三取代对称三嗪¾ ¾ 1,3,5-三(五溴苄基)异氰尿酸酯(TPBBIC)，精品得率74%。TPBBIC含溴75%，热稳定性优于绝大多数现有的溴系阻燃剂。其熔点高于340 °C，346°C时的质量损失仅2%。以TPBBIC阻燃高聚物时，预期加工温度可达300°C，故估计可以作为阻燃剂用于大多数现有工程塑料。关键词 阻燃剂 三嗪化合物 1,3,5-三(五溴苄基)异氰尿酸酯 合成 吴俊浩 男，30岁，博士生，现从事尼龙6的阻燃机理研究。*联系人 2001-08-26收稿，2002-03-31修回 |