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 10:
11. The process of claim 5 comprising one or more copolyimides comprising sulfide-containing endcaps and sulfides in said one or more copolyimides backbone:, , wherein
a) each K has the following structure;, and
for K
(i) the index m is 1 or 2; and
(ii) L is a covalent bond, or a linking group having one of the following structures:, b) Q and T are as defined in claim 5;
c) the subscripts a, b and c are molar fractions of Q, T and K, with the proviso that a, b and c are positive numbers, each with the range of 0.05 to 0.95 and the sum of which is 1;
d) the index p is independently an integer from 5 to 300; and
e) each R is independently Me, Et or Ph.