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.

La actual invención proporciona el PMR-tipo polyimides que exhibe viscosidades más bajas del derretimiento que el PMR-tipo polyimides del arte anterior. Este el PMR-tipo polyimides es creado incorporando acoplamientos flexibles, tales como estructuras enroscadas y moietes torcidos o no-coplanarios en la estructura de la espina dorsal del PMR. Específicamente, la actual invención preve la producción del PMR-tipo polyimides que tienen biaryls 2,2'-disubstituted en la espina dorsal del polímero.

 
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