4,4'-Isopropylidenediphenol
The yield of 4,4'-Isopropylidenediphenol Bisphenol A BPA is related to the molar ratio of phenol to acetone. Generally, when the ratio is (8~10): 1, the reaction rate of 4,4'-Isopropylidenediphenol Bisphenol A BPA formation can be increased. If the molar ratio is further increased, the increase in 4,4'-Isopropylidenediphenol Bisphenol A BPA yield will be very small. Conversely, if the dosage of acetone is increased, a large amount of by-products such as acetone condensates (isopropylidene acetone, diisopropylidene acetone, etc.) will be generated.
In addition, if a certain amount of organic compounds containing sulfhydryl groups is added to the ion exchange resin as a co-catalyst, the comprehensive performance of the catalyst can also be improved.