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PROCESS FOR PREPARING SOLUBLE POLYIMIDE BY THE POLYCONDENSATION OF MELLOPHANIC DIANHYDRIDE PYROMELLITIC DIANHYDRID EAND AN AROMATIC DIAMI NEFOLLOWED BY IMIDATION OF THE POLYCONDENSATION PRODUCT
PROCESS FOR PREPARING SOLUBLE POLYIMIDE BY THE POLYCONDENSATION OF MELLOPHANIC DIANHYDRIDE PYROMELLITIC DIANHYDRID EAND AN AROMATIC DIAMI NEFOLLOWED BY IMIDATION OF THE POLYCONDENSATION PRODUCT