| abstract |
Branched, high molecular weight, thermoplastic, nitrile group-containing polyarylene ethers, built up from recurring units of the formula I. in which E denotes a radical which is derived from dihalobenzene compounds and which E 2 is a radical which is derived from bisphenols and branching agents, characterized by a content of 0.01 to 5 mol%, based on the radical E 1 at least one residue that differs from polyhalogen compounds of the formulas in which X represents a fluorine or chlorine atom, and their preparation. |