申请人:Cherkaoui Mohammed Zoubair
公开号:US20080069968A1
公开(公告)日:2008-03-20
A diamine compound is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound. The compound is represented by one of the general formulae (Ia) and (Ib). It could be shown that such structures, in particular for a specific choice of the residue B, provide, if e.g. used as orientation layers, a photostable, vertically aligning material with an improved VHR.
提出了一种二胺化合物以及基于该化合物的聚合物、共聚物、聚酰胺酸、聚酰胺酸酯或聚酰亚胺。该化合物由公式(Ia)和(Ib)中的一种表示。如果选择残基B,可以证明这些结构,特别是作为定向层使用,提供了一种光稳定、垂直排列的材料,具有改进的VHR。