A kind of synthesis technique of polycarbonate
A technology of polycarbonate and synthesis process, applied in the field of chemistry, can solve the problems of increased process difficulty, many side reactions, long synthesis reaction time, etc., and achieves the effects of improving conversion rate and yield and improving efficiency
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[0017] A polycarbonate synthesis process, comprising the following steps: the first step, stirring and mixing the melted isosorbide and the melted diester carbonate in a raw material mixing tank; the second step, mixing the raw material mixing tank The mixed raw materials are added to the transesterification reactor, and the released hydroxyaryl reaction product is continuously removed; in the third step, the reaction product of the transesterification reaction in the transesterification reactor is added to the tank-type precondensation reactor, and The prepolymerization product is generated in it, and the released hydroxyaryl reaction product is continuously removed; the fourth step is to add the prepolycondensation reactant after the prepolymerization reactor to the horizontal disc polycondensation reactor with hydraulic drive, Microwave treatment is performed on the precondensation reactants to polycondensate into polycarbonate melts.
[0018] Microwaves can accelerate the ...
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