Patent ID: 9156983
Filing Date: 2015-10-13
Classification: B29C,C08G,C08J,C08L

Abstract:
1. A process for producing a melt blend consisting of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK) which comprises the steps of: pre-dry-mixing a PBI with a PEKK to obtain a dry mix; feeding said dry mix to an extruder with a plurality of heating zones; setting said heating zones in a temperature range of 240° C. to 410° C.; melting said dry mix blend as it passes through said extruder; and obtaining said melt blend of PBI/PEKK in all proportion within a range from 1/99 PBI/PEKK to 80/20 PBI/PEKK.