Patent ID: 8722187

Claim:
A fiber comprising a reaction blend of a polyimide resin and an organic compound to produce an aryl amine functionalized polyimide, having aryl amine functionality in excess of any anhydride functionality, wherein the polyimide resin has a weight average molecular weight (Mw) from 5,000 to 100,000 daltons, wherein the organic compound comprises at least one primary aliphatic amine, wherein the primary aliphatic amine does not have a direct linkage of a nitrogen to an aryl group, and wherein the primary aliphatic amine does not have a functionality selected from the group consisting of a halogen functionality, a hydroxyl functionality, a sulfonic acid functionality, a sulfonic acid salt functionality, and combinations thereof; and wherein the aryl amine functionalized polyimide has an aryl amine content of from 0.3 to 3.0 mole percent of the aryl amine functionalized polyimide.