Patent ID: 8309662

Claim:
A process for producing a solution blend of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK) which comprises the steps of: providing a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK); providing a strong acid selected from the group consisting of: sulfuric acid, methane sulfonic acid, trifluoromethane sulfonic acid, trifluoroacetic acid, dichloroacetic acid, formic acid and combinations thereof; mixing said PBI and PEKK with said strong acid at a temperature between 40° C. and 80° C. for 30 minutes to 2 hours to produce a mixture; cooling said mixture to room temperature; dropping said mixture into a bath selected from the group consisting of water or a water-methanol blend; stirring swiftly said mixture and said bath to form an aqueous mixture; filtering said aqueous mixture to remove the water and strong acid to produce a blend; washing said blend with water; and drying said blend to yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.