The halogenated aromatic polyamide

which contains halogenospacer in main chain

was obtained by the reaction of 3

3-dichloro-4

4'-diamino-diphenyl-methane and terephtha-loyl chloride. For comparison analogous nonhalogenated polymer and copolymer were prepared. The effect of chlorine substitution on the benzene ring on flammability

solubility

melting point

thermal stability

was studied by limited oxygen index (LOT)

DSC

TGA and solubility measurements.