摘要
研究了酯化法合成抗氧剂168[亚磷酸三(2,4二叔丁基苯基)亚磷酸酯]的工艺条件。以68.8g(1/3mol)2,4-二叔丁基苯酚和15.4g(1/9mol)三氯化磷为原料,催化剂三乙胺,反应温度140～150℃、反应时间2.5h的条件下进行酯化反应,经异丙醇结晶后得三(2,4-二叔丁基苯基)亚磷酸酯,平均收率95%。
The process conditions for the synthesis in esterification of antioxidant 168, tris （2,4- diterbutylphenyl） phosphite were studied. The 68.8 g （1/3 mol） of 2,4-ditertbutyl phenol and the 15.4 g （1/9 mol） of phosphorus trichloride were as raw materials with the triethylamine catalyst. The conditions for esterification reaction were that the reaction temperature 140-150℃, reaction time 2.5 h firstly, then crystallization of the reaction product with isopropyl alcohol, getting tris （2,4-ditertbutylphenyl）phosphite. The average yield for the antioxidant 168 is above 95%.
出处
《塑料助剂》
2009年第4期37-40,共4页
Plastics Additives
关键词
抗氧剂
亚磷酸酯2
4-二叔丁基苯酚
三氯化磷
酯化
antioxidant
phosphite
2,4 - ditertbutyl phenol
phosphorus trichloride
esterification
