Aromatic polycarbonate composition

A blend (B) comprising:

• at least one aromatic polycarbonate (P1), and
• at least one polyarylene (P2), more than 50 wt. % of the recurring units thereof are optionally substituted arylene groups (recurring units (R2)), each of said recurring units (R2)) being linked by each of its two ends to two other optionally substituted arylene groups via a direct C—C linkage, and said recurring units (R2) being a mix (M) consisting of:
• about 50 mole %, based on the total number of moles of recurring units (R2), of rigid rod-forming arylene units (R2a), optionally substituted by at least one monovalent substituting group, with
• about 50 mole %, based on the total number of moles of recurring units (R2), of kink-forming arylene units (R2b), optionally substituted by at least one monovalent substituting group;
• wherein the weight of the polyarylene (P2), based on the combined weight of the aromatic polycarbonate (P1) and the polyarylene (P2), ranges from 5% to 25%.