Aromatic amide groups-containing diamines and polymers in which

Details Aromatic amide groups-containing diamines and polymers in which Aromatic amide groups-containing diamines and polymers in which

1987-11-16

1989-07-25

Foelak, Morton

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 49, 560 50, 564134, 564153, 528347, 528348, 528229, 528 68, C07C10100, C07C10206

Patent

active

048515620

ABSTRACT:
There is provided a new class of diamines of the formula ##STR1## wherein X=NH or O, and R represents a divalent, substituted or unsubstituted organic group having at the most 20 carbon atoms.
The diamines, wherein X has the meaning of an O-atom, may be converted with diacids, diacid dichlorides, aromatic carboxylic acid anhydrides or diisocyanates into poly(esteraramid) amides, poly(esteraramid) imides, or poly(esteraramid) urea or, when X stands for an --NH--group, into poly(amidaramid) amides, poly(amidaramid) imides, or poly(amidaramid) urea.
The wholly or largely aromatic polyamides, polyurea or polyimides are of an iterative structure. They can be melt-processed into shaped objects displaying a very good resistance to high temperatures, particularly when use is made of diamines having meta-substituted amide groups or diamines of a non-aromatic structure for the --XRX-- group, or of a non-aromatic structure of the diacids, diacid dichlorides, aromatic carboxylic acid anhydrides or diisocyanate to be linked to the diamines. By alterning the chemical structure of the diamines on the one hand and the diamine-linkable bifunctional compounds on the other, both are melting performance and the level of crystallinity of the end product may be influenced.

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Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Ed. vol. 3 (1978), pp. 229-237.
Yamazaki et al., Journal of Pol. Sci., vol. 13 (1975), pp. 1373-1380.

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