Aromatic amide groups-containing diamines and polymers prepared

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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528310, 528350, 528353, C07C23377

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active

049805045

ABSTRACT:
Diamines having a 1,1,3-trimethylphenylindane dicarboxylic moiety linked on both sides to phenylene diamine by an amide bond (PIDA diamines) are disclosed. By reacting these diamines with aromatic difunctional acid derivatives, amorphous polymers having high glass transition temperatures (Tg) can be prepared. If aliphatic diacid derivatives are used the resulting polymers have a lower Tg, but have the advantage of melt-processability. The PIDA-diamines can also be used in the preparation of polyimides, being reacted either with tri- or tetracarboxylic anhydrides or with imide group-containing acid derivatives.

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Yamakazi et al., Studies on Reactions of the N-Phosphonium Salts of Pyridines, XIV, Wholly Aromatic Polyamides by the Direct Polycondensation Reaction by Using Phosphites in the Presence of Metal Salts, J. Pol. Sci, 13, pp. 1373-1380 (1975).
G. Neamtu et al., High-Temperature Polymers Polybenzothiazole-Amide-Imides, pp. 29-38 (1981).
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