Process for the preparation of poly(ester-carbonate)s

摘要

The invention relates to a process for the preparation of poly (ester- carbonate)s from the corresponding oligomers, using solid state polymerization process, which comprises mixing the desired oligomers in a suitable solvent or non-solvent, adding a suitable catalyst to this mixture, refluxing the mixture for a period of 1 to 8 hours, removing the solvent by known methods, polymerization the oligomer mixture in the solid state either in presence of vacuum or under a flow of inn gas at a temperature ranging between 180-240° C. for a period of 5 to 20 hours to obtain the product.