常压法合成三-(3,5-二叔丁基-4-羟基苄基)异氰尿酸酯(抗氧剂3114)

以2,6-二叔丁基苯酚、三聚氰酸及多聚甲醛为原料,N,N-二甲基甲酰胺(DMF)为溶剂,六次甲基四胺(HMTA)为催化剂在常压下经一步反应合成了抗氧剂3114。研究了影响反应的因素,优化了反应条件。反应的最优条件是:原料配比为n(三聚氰酸)∶n(2,6-二叔丁基苯酚)∶n(多聚甲醛)=1.000∶3.750∶4.125,催化剂用量0.10 g;溶剂DMF 30 mL;于120℃反应4 h,收率为95.47%。并对产品进行了红外表征、熔点测定、元素分析及透光率测定。

Synthesis oF Tris- (3,5-di-tert-butyl-4-hydroxy-benzyl) Isocyanurate ( Antioxidant 3114)

The antioxidant 3114 was synthesized with 2, 6-di-tert-butyl phenol, and cyanuric acid paraformaldehyde as raw materials, N, N-dimethylformamide ( DMF ) as solvent and hexamethylenetetramine(HMTA) as catalyst under atmospheric pressure by one step. The effect of various reaction conditions was studied. The optimal reaction conditions were as follows the ratio of (eyanuric acid) : n(2,6-di-tert-butyiphenol) : n(polyformaldehyde)=1.000 : 3. 750 : 4. 125, the amount of catalyst 0. 10 g, DMF solvent 30 mL and reaction for 4 h at 120 ℃. The yield was 95. 47%. The product was identified by IR, melting point and transmittance measurement and elemental analysis.