The present invention provides PMR-type polyimides that exhibit lower melt viscosities than PMR-type polyimides of the prior art. These PMR-type polyimides are created by incorporating flexible linkages, such as kinked structures and twisted or non-coplanar moietes into the backbone structure of the PMR. Specifically, the present invention provides for the production of PMR-type polyimides having 2,2′-disubstituted biaryls in the polymer backbone.
本发明提供的 PMR 型聚
酰亚胺的熔体粘度低于现有技术中的 PMR 型聚
酰亚胺。这些 PMR 型聚
酰亚胺是通过在 PMR 的骨架结构中加入柔性链节(如扭结结构和扭曲或非共面分子)而制成的。具体而言,本发明可生产聚合物主链中含有 2,2′-二取代双芳基的 PMR 型聚
酰亚胺。