申请人:Akzo N.V.
公开号:US04851562A1
公开(公告)日:1989-07-25
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.
提供了一种新的二元胺类,其化学式为##STR1##其中X=NH或O,R代表一个双价的,取代或未取代的有机基团,最多有20个碳原子。当X表示O原子时,这些二元胺可以与二酸、二酸二氯化物、芳香族羧酸酐或二异氰酸酯反应,形成聚酰胺酰胺、聚酰胺亚酰胺或聚酰胺脲;当X表示--NH--基团时,它们可以与二元酸、二元酸二氯化物、芳香族羧酸酐或二异氰酸酯反应,形成聚酰胺酰胺、聚酰胺亚酰胺或聚酰胺脲。这些完全或大部分为芳香族的聚酰胺、聚脲或聚亚酰胺具有迭代结构。当使用具有甲基取代酰胺基团的二元胺或非芳香族结构的--XRX--基团的二元胺,或非芳香族结构的二元酸、二元酸二氯化物、芳香族羧酸酐或二异氰酸酯与二元胺反应时,它们可以熔融加工成形状物体,具有很好的耐高温性能。通过改变二元胺的化学结构和可与二元胺反应的双官能化合物的结构,可以影响熔融性能和最终产品的结晶度水平。