Synthesis and characterization of silicon-containing polyamides from aromatic sulfone ether diamines and aromatic organosilicon diacid chlorides

New polymides and copolyamides containing silicon and sulfone ether linkages, soluble in common aprotic solvents and having inherent viscosities of 0.3–0.6 dL/g have been synthesized by solution condensation of bis‐(4‐chlorocarbonyl phenyl) dimethylsilance (DMSC) and/or bis‐(4‐chlorocarbonyl phenyl) diphenylsilance (DPSC) with 4,4′‐[sulfonylbis‐(4,1‐phenylenoxy)] bisbenzenamine, 3,3′‐[sulfonylbis (4,1‐phenyleneoxy)] bisbenzenamine, and bis (4‐aminophenyl) ether. These polymers were characterized by infrared spectra, solution viscosity, thermooxidative degradation, differential scanning calorimetry, and x‐ray diffraction. These polymers show good thermal stability.