N-硬脂酰基-N′,N′-二甲基丙二胺的合成

以硬脂酸和 N,N-二甲基丙二胺为原料、二甲苯为溶剂、有机锡为催化剂合成了抗静电剂Cyastat SN的中间体 - N-硬脂酰基 - N′,N′-二甲基丙二胺。通过正交实验确定了最佳工艺条件 ,分别为 :物料配比 n硬脂酸 ∶ n胺 =1∶ 1 ,反应温度为 1 45°C,反应时间为 2 h,催化剂用量为 (硬脂酸与胺总量 ) 3% (质量分数 )。最优条件下的试验收率近 90 % ,并对中间体进行了 IR光谱分析及纯度测定

Synthesis of N-Stearyl-N′,N′-dimethyl Propanediamine

N Stearyl N′,N′ dimethyl propanediamine was synthesized with stearic acid and N′,N′ dimethyl propanediamine as raw material, xylene as solvent and organic tin as catalyst. The optimum reaction conditions were determined through orthogonalized tests. They were as follows: molar ratio of n (stearic acid)∶ n(N′,N′ dimethylpropanediamine)=1∶1; reaction temperature, 145°C; reaction time, 2 h; catalyst, 3%. Under the above conditions a yield of 90% was obtained. The product was characterized by IR and elemental analysis.