Processable Heat-Resistant Polymers. IX. Synthesis and Properties of Polyamideimide from N-(p-Carboxy Phenyl) Trimellitimide and p,p?-Di-(amino Phenyl) Sulfone

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Abstract
A novel polyamideimide was synthesized by reacting p,p′-di-(amino phenyl) sulfone and N-(p-carboxy phenyl) trimellitimide or its diacid chloride derivative. The polymer was found to be soluble in highly polar solvents. The polymer was characterized by elemental analyses and IR spectrum. It is found to be amorphous and of low molecular weight. The polymer is fairly thermostable, having a T of 210–220°C. Thermogravimetric determination revealed that the polymer underwent 17% weight loss at 375°C in air. The dielectric constant of the polymer at 1 kHz was 3.74 at 30°C. The electrical conductivity of the polymer was also measured.

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