CHEMISTRY AND TECHNOLOGY OF CHEMICAL FIBRES EFFECT OF PROCESSING PARAMETERS ON THE SYNTHESIS OF BISPHENOLS, MONOMERS FOR PRODUCING POLYESTER POLYMERS AND FIBRES

摘要

The effect of processing parameters on the synthesis of a series of bisphenols in the presence of an HCl:H2S catalyst was studied. It was shown that the reaction was highly selective at a 1:10 ketone:phenol mole ratio. The reaction rate was strongly affected by the amount of catalyst up to a 1:0.25 ketone:HCl mole ratio whereas the required amount of promoter (H2S) was < 0.15 mol/mol of ketone. The optimum synthesis temperature fell in the range 30-50A degrees C and depended on the structure of the synthesized bisphenol. A series of bisphenols based on various phenols and ketones were synthesized under the selected optimum conditions.