Flame-retardant toluene diisocynate derivative and synthetic method thereof

The invention relates to a Flame-retardant toluene diisocynate derivative and a synthesis method thereof, and belongs to the technical field of polyurethane materials. The general chemical structuralformula of the flame-retardant toluene diisocynate derivative is Brn-Ar-(NCO) 2, wherein Ar is a benzene ring, and n is 1-4. According to the synthesis method of the derivative of the flame-retardanttoluene diisocynate, bromophenylenediamine micromolecules with Br elements are adopted for phosgene reaction, and then the derivative of the flame-retardant toluene diisocynate is obtained through refining. The flame-retardant effect is good, the influence on the physical property of a foam product is small, and flame retardance is lasting. 本发明涉及一种阻燃甲苯二异氰酸酯的衍生物及其合成方法,属于聚氨酯材料技术领域。本发明的阻燃甲苯二异氰酸酯的衍生物，其化学结构通式为：Br-Ar-(NCO)，其中，Ar是苯环，n为1-4。本发明的阻燃甲苯二异氰酸酯的衍生物合成方法，采用具有Br元素的溴苯二胺小分子进行光气反应，后经过精制获得阻燃甲苯二异氰酸酯的衍生物。本发明阻燃效果好、对泡沫制品的物理性能影响小、阻燃持久。