Abstract: 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: between 0 and 75 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 between 25 and 100 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. Article or part of an article comprising the blend (B).

Abstract: Use of at least one kinked rigid-rod polyarylene of a specific type for its fire resistance properties. Films and coatings consisting of a material comprising the same kinked rigid-rod polyarylene.

Abstract: Blend (B) comprising: at least one aromatic polyimide (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: between 0 and 75 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 between 25 and 100 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. Article or part of an article comprising the blend (B).

Abstract: Multipurpose sealing adhesive materials for sealing different components of an electrochemical cell are provided. The sealing materials are acid, acid anhydride, acid ester or metallocene modified polyolefins that are capable of providing multiple sealing functionalities in a heat activated sealing process. These sealing polymers are capable of adhering to plain and textured metal, graphite and graphite-filled polymer composite separator plates.