Bing Li, Y. Ou, Fei Xin
Sep 1, 2007
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Journal
Journal of Beijing Institute of Technology
Abstract
Bisphenol A bis (diphenyl phosphate) oligomer (BDP) is prepared successfully from the reactants consisting of phosphorus oxychioride (POCl3), bisphenol A and phenol with a Friedel-Crafts catalyst. The resultant products were examined with thermo-gravimetric analysis (TGA) and high performance liquid chromatography (HPLC). Thermogravimetry data shows that BDP decomposes at 375℃ when 5% weight lost. Experiments results show that catalyst is preferably AlCl3 and the amount of it is preferably 1% relative to bisphenol A by mole. POCl3/bisphenol A mole ratio is preferably about 5:1 to 6:1. Experiments unclosed that a seal apparatus is very important to the properties of product.