
14: POLY(AMIDE-IMIDE)S 323
Figure 14.3 Amino and imino acids used for
poly(amide-imide)s.
HOOC
N
O
O
COOH
2-(4-Carboxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid
N
O
O
COOH
O
HOOC
O
O
N
Oxy-bis(N-(4-phenylene)-trimellitic imide)
4 -(α-Methylnadimido)-benzoic acid
N
H
3
C
O
O
COOH
COOH
H
2
N
3-Aminobenzoic acid
groups [27]. Oligoether spacers have been synthesized
by the condensation of trimellitic acid anhydride with
1,8-diamino-3,6-dioxaoctane.
Fluorinated heat-resistant PAIs based on a non-
coplanar diimide-diacid monomer have been synthe-
sized [28]. The monomer is synthesized as shown in
Figure 14.4.
The PAIs are obtained in high yields, are amorphous
in nature, and show