Method for continuously preparing polycarbonate oligomer

摘要: POLYCARBONATE OLIGOMER HAVING A MOLECULAR WEIGHT OF 450 TO 500 IS PREPARED WITH GOOD REPRODUCIBILITY AND THEORETICAL CONSUMPTION PHOSGENE BY INTRODUCING AN AQUEOUS CAUSTIC ALKALI SOLUTION DIHYDROXY COMPOUND ORGANIC SOLVENT FOR INTO TUBULAR REACTOR, FORMING MIXED PHASE STREAM THEREOF FEEDING THERETO EFFECT REACTION THE IN PARALLEL-CURRENT FLOW, WHILE TEMPORARILY REMOVING HEAT GENERATED AT FORM LATENT VAPORIZATION SAID SOLVENT.