PREPARATION AND PROPERTIES OF NEW POLYCYCLIC ALIPHATIC POLYAMIDES BASE ON DIAMANTANE

A series of novel polycyclic aliphatic polyamides was synthesized by d irect polycondensation of the 1,6-diamantane dicarboxylic acid with va rious alicyclic diamines in N-methyl-2-pyrrolidone (NMP) containing li thium chloride, using triphenyl phosphite and pyridine as a condensing agent. The polyamides had inherent viscosities of 0.33-0.49 dL/g. The glass transition temperatures of the these polyamides were in the ran ge of 200-220 degrees C, and the 5% weight loss temperatures were in t he range were 290-319 degrees C in nitrogen. (C) 1995 John Wiley & Son s, Inc.