摘要
以2,4-二枯基酚、季戊四醇、三氯化磷为基本原料合成了抗氧剂852,即二(2,4-二枯基苯基)季戊四醇双亚磷酸酯。重点讨论了反应溶剂、催化剂、物料配比、反应温度、反应时间和结晶溶剂对产品收率的影响,筛选出了最佳的合成工艺条件为:物料摩尔配比η(2,4-二枯基酚)∶η(三氯化磷)∶η(季戊四醇)为2.00∶2.18∶1.00,第一步反应温度60℃,反应4h,第二步反应110℃,反应6h,反应收率为78%。
The antioxidant 852 [Bis（2,4-dicumyl phenyl） phentaerythritol diphosphite ] was synthesized with 2,4-dicumyl phenol , pentaerythriol and phosphorus trichloride. The effect of catalysts, reaction solvents, the molar ratio of raw materials , reaction temperature , reaction time and solvents for crystallization on the yield of product were discussed. From the experimental results, the optimized conditions were obtained. When the first reaction is carried out at 60 ℃ for 4 h, while the second reaction at 110℃for 6 h. The molar ratio of dicumyl phenol,phosphorus trichloride and penrerythritol is 2.00：2.18：1.00, the average yield for the antioxidant 852 was 78%.
出处
《塑料助剂》
2013年第2期29-33,共5页
Plastics Additives
