Manufacture of bisphenol-A

Details Manufacture of bisphenol-A Manufacture of bisphenol-A

1996-09-13

1998-07-28

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568727, C07C 3784

Patent

active

057865221

ABSTRACT:
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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