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PROCESS FOR PRODUCING BISPHENOL A WITH REDUCED SULFUR CONTENT POLYCARBONATE MADE FROM THE BISPHENOL A AND CONTAINERS FORMED FROM THE POLYCARBONATE
PROCESS FOR PRODUCING BISPHENOL A WITH REDUCED SULFUR CONTENT POLYCARBONATE MADE FROM THE BISPHENOL A AND CONTAINERS FORMED FROM THE POLYCARBONATE
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机译:用双酚A还原的硫含量的聚碳酸酯和碳酸盐制成的容器生产双酚A的方法
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摘要
In one embodiment a process for producing a bisphenol A product comprises: reacting phenol with acetone in the presence of a sulfur containing promoter to obtain a reaction mixture comprising bisphenol A phenol and the promoter; after reacting the phenol with the acetone cooling to form a crystal stream comprising crystals of bisphenol A and phenol; separating the crystals from the crystal steam; melting the crystals to form a molten stream of bisphenol A phenol and sulfur; contacting the molten stream with a base to reduce a sulfur concentration in the molten stream and form a reduced sulfur stream; and removing phenol from the reduced sulfur stream to form a bisphenol A product. Also disclosed herein is a container comprising: a polycarbonate formed from a bisphenol A having a sulfur concentration of 0.5 to 15 ppm based upon the weight of the bisphenol A.
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