Yang Jin-fei
2009
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Journal
Journal of Jiangnan University
Abstract
Bisphenol-A bis(dimethylphenyl phosphate) was synthesized from phosphorus oxychloride bisphenol-A phenol and methylphenol.The effects of process parameters,such as molar ratio,reaction temperature and catalyst on the yield were respectively studied.The suitable synthesis conditions were defined as follows: the molar ratio of phosphorus oxychloride,bisphenol-A,phenol and methylphenol: 3∶1∶2∶4.05.In the first step,the reaction temperature was 50 ℃,and the reaction time was 8 hours.In the second step,the reaction temperature was 140 ℃,and the reaction time was 5 hours.AlCl3 was the best catalyst,and its dosage was 1.5% of the amount of all bisphenol-A.The yield reached 87.4%.The structure of the product was defined by FT-IR.The quality of the product can reach the indexes of the oversea product.The flame retardance was tested in different plastic product.It is shown showed that bisphenol-A bis(dimethylphenyl phosphate) was a good flame retardant.