Patent ID: 8633284

Claim:
A prepolymer blend comprising: a first cross-linkable prepolymer component comprising at least a first polyimide oligomer having the formula: E 1 -[R 1 ] n -E 1 ; and a second cross-linkable prepolymer component comprising M 1 , wherein M 1 is capable of forming a second polyimide oligomer different than the first polyimide oligomer having the formula E 2 -[R 2 ] n -E 2 ; wherein R 1 and R 2 independently comprise the following structure: wherein n comprises from about 1 to about 5, wherein V is a tetravalent aromatic monocyclic or polycyclic linking structure, R is a divalent organic radical, E 1 and E 2 independently comprise crosslinkable functional groups, and wherein M 1 comprises a mixture of unreacted monomeric compounds including a diamine component, a dianhydride component, and an end group component, the diamine component comprising at least two diamine compounds, the dianhydride component comprising at least two dianhydride compounds, and the end group component comprising at least one end group compound; wherein the prepolymer blend, prior to cure, provides at least one predetermined prepolymer blend property; and wherein the prepolymer blend, when cured under suitable cure conditions, provides a crosslinked polyimide matrix having at least one predetermined crosslinked matrix property.