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Synthesis of Styrenated Phenol

Zhang Jinlong Chen Moyu (Nanjing Petrochemical Co.,Ltd.,Nanjing 210047)  
Styrenated phenol as antioxidant for rubber was prepared by reaction of styrene with phenol.The effects of reaction conditions such as dosage of catalyst,molar ratio of raw materials and reaction temperature on the alkylation were investigated.The result showed that the yield of styrenated phenol was over 95%in the presence of p-toluenesulfonic acid as catalyst at 120-130℃when dosage of catalyst was 1%-1.5% based on mass of phenol,molar ratio of styrene to pheol was(2.0-2.3):1,reaction time was 2 hours.
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