Patent ID: 11926726
Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. The process of claim 3 wherein said copolyimides have Structure II below and wherein for each said of copolyimides, the indices and variables provided in Structures II and III are independently selected:, , the subscripts a and b are indices for the molar fractions of Q and T, each with the range of 0.05 to 0.95, respectively, and the sum of a and b is unity; and m is an integer from 5 to 300; wherein Q and T are homopolyimides having Structure III below:, wherein
a) for each homopolyimide Q and T, the index n is an integer from 5 to 300;
b) for each homopolyimide Q and T, W is independently a covalent bond, or a linking group having one of the following structures:, b) for each homopolyimide Q and T, J has one of the following structures with the proviso that J for Q and T is different:, wherein:
i) X is a linking group having one of the following structures:, ii) Y is a covalent bond, or a linking group having one of the following structures:, and
iii) Z is one of the following structures:,