Aromatic diamines containing three ether-linked-benzonitrile moieties, polymers thereof, and methods of making the same
申请人:The United States of America, as represented by the Secretary of the Air Force
公开号:US09139696B1
公开(公告)日:2015-09-22
The present invention includes compositions and methods of preparation for symmetrical and unsymmetrical diamines containing three ether-linked benzonitrile moieties that may be used as monomers for the manufacture of a variety of functional polymers. For example, the presently disclosed multi(ether-benzonitrile) diamines may polymerize with: (i) a dianhydride to form a polyimide; (ii) a diacid chloride directly or with a dicarboxylic acid (diacid) in conjunction with a suitable promoter/catalyst combination such as triethylphosphite/pyridine to form a polyamide; and (iii) 1,2,4-benzenetricarboxylic anhydride (trimellitic anhydride), trimellitic anhydride chloride, or a diacid/diacid chloride derived from trimellitic anhydride and an aromatic diamine to form a poly(amide-imide).
本发明涵盖了一种包含三个醚键联结的苯腈基团的对称和非对称二胺的组成物及其制备方法,这些二胺可以用作制造各种功能性聚合物的单体。例如,目前公开的多(醚苯腈)二胺可以与:(i) 二酐反应形成聚酰亚胺;(ii) 直接与二酸氯或与二羧酸(二酸)在三乙基膦/吡啶等适当促进剂/催化剂组合的作用下反应形成聚酰胺;以及(iii) 1,2,4-苯三羧酸酐(三甲基酸酐)、三甲基酸酐氯化物,或由三甲基酸酐和芳香族二胺衍生的二酸/二酸氯化物反应形成聚(酰胺-酰亚胺)。