ALTERNATING ALIPHATIC-AROMATIC POLY(ESTERAMIDE) Poly(esteramide) having thermotropic polymorphic properties is characterized by the repeating structure <IMG> where: x = integers from 1 to 14 y = integers from 3 to 9 when x + y is an odd integer, properties usually associated with liquid crystal polymers are seen, while when x + y is an even integer birefringence above a major endotherm is observed but the spontaneous flow property usually seen with liquid crystal polymers is absent.
ALTERNATING ALIPHATIC-AROMATIC POLY(ESTERAMIDE)