Patent ID: 7999060

Claim:
A tailorable polyimide prepolymer blend comprising: an end group component selected from the group consisting of a reactive end-capping agent, a non-reactive end-capping agent, and combinations thereof; a dianhydride component including 3,4,3′,4′-benzophenonetetracarboxylic dianhydride (BTDA), derivatives thereof, and combinations thereof, and 3,4,3′,4′-biphenyltetracarboxylic dianhydride (BPDA), derivatives thereof, and combinations thereof; and a diamine component including 1,3-phenylenediamine (mPDA), derivatives thereof, and combinations thereof, 1,4-phenylenediamine (pPDA), derivatives thereof, and combinations thereof, bis amino phenoxy benzene (APB), derivatives thereof, and combinations thereof, and optionally, 4,4′-(1,3-phenylene-bis(1-methylethylidene)bisaniline (Bis-M), derivatives thereof, and combinations thereof; wherein the molar ratio of (mPDA and pPDA) to the (APB or APB and Bis-M) is in the range of about 1.2-1.7 (mPDA and pPDA):1.0 -1.5 (APB or APB and Bis-M).