发明授权
US5786522A Manufacture of bisphenol-A 失效
双酚A的制造

Manufacture of bisphenol-A
摘要:
An integrated process for the preparation and recovery of BPA in pure form utilizes a series of steps to crystallize pure BPA of improved color stability and recycle separated impurities to improve overall yields. The principal impurity recycled to the process is o,p-BPA which functions as a color stabilizer in the product and in polycarbonate resins prepared from the BPA.
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