季戊四醇
三氯化磷
摩尔比
催化作用
产量(工程)
化学
核化学
反应条件
高分子化学
有机化学
材料科学
阻燃剂
冶金
出处
期刊:Chemical Industry and Engineering
日期:2008-01-01
摘要
Bis(2,4-di-tert-butyl-phenyl) pentaerythritol diphosphite(antioxidant 626) was synthesized with pentaerythritol,di-tert-butylphenol and phosphorus trichloride.The effects of reaction temperature,reaction time,catalyst and the molar ratio of raw materials on the yield of the product were discussed by orthogonal experiment.From the experimental results,the optimized conditions were obtained.The first reaction was carried out at 55 ℃ for 3 h,while the second reaction at 125 ℃ for 2 h.The molar ratio of pentaerythritol,phosphorus trichloride and di-tert-butylphenol is 1∶2.05∶2.0,and the weight ratio of catalyst B to pentaerythritol is 0.022.The element analysis and IR spectrogram of the product agreed well with the target product.
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